水務署機電標準規格版本追蹤

水務署的機電標準規格分四冊發布，同一份規格往往有多個版本同時掛在官網，檔名未必看得出哪個是現行版。管住合約的是併入合約的版本，不是官網最新版；本頁把與在線水質監測儀器相關的 12 份核心規格逐版列出，每個版本都以 PDF 第一頁的頁眉日期核實，並附逐版改動摘要與現行版要點；另 16 份相關規格列出現行版與最近一次改動；其餘 84 份只列編號與名稱。所有檔案於 2026 年 9 月 3 日從水務署網站下載核對。

A version tracker for the WSD Mechanical & Electrical Standard Specifications that govern online water-quality instrumentation. Every edition was downloaded from wsd.gov.hk on 3 September 2026 and its page-1 header read verbatim; changes between consecutive editions are summarised with clause references. The edition incorporated into a contract governs, not the newest on the website.

一、本次核實的重點發現

• EM-02-05 餘氯分析儀 2026 年 5 月版新增「按市場供應情況提供 Modbus 或 Profibus 等數碼通訊」一句；量程 0 至 10 mg/L 及 IP65 自 2020 年 9 月版起未變。
• E-78-02 pH 及 E-78-03 濁度儀 2024 年 10 月版把數碼通訊（Modbus、Profibus 或 HART）由「指定時才提供」改為「按市場供應情況及應用環境提供」，並容許經數碼通訊傳送警報。
• EM-00-03 供應總則 2025 年 10 月版以 AS/NZS 4020:2018 金屬析出測試加 Table A 上限及非金屬部件 BS 6920 系列，取代舊版的 WRAS 或 NSF 認證句子（新增第 2.10 節）。
• EM-00-01 檢驗測試 2023 年 12 月版把獨立檢驗機構報告期限延長至兩個月，並要求出貨前先取得接納通知。
• EM-00-02 現場安裝及測試 2024 年 2 月版引入標準檢驗申請表及提交期限表（星期一至五的檢驗須於 24 小時前提交，星期六日於前一個星期四中午前，公眾假期於 48 小時前），並減少文件份數。
• E-83-03 電磁流量計 2022 年 6 月版新增濕接觸非金屬部件的 BS 6920 認證要求。
• 四冊之中沒有電導率或溶解氧的水質分析儀標準規格；E-84-01 是電導式液位電極規格，不是水質分析儀。

二、四冊索引頁與修訂日期

三、核心規格（12 份）逐版追蹤

• EM-00-01 Inspection, Testing and Reporting（現行：December. 2023）
• EM-00-02 Site Installation and Testing of Mechanical, Electrical and Instrumentation Plant and Equipment - General（現行：February 2024）
• EM-00-03 General Requirements for Supply of Mechanical, Electrical and Instrumentation Plant and Equipment（現行：October 2025）
• EM-02-05 Chlorine Residual Analyzer（現行：May 2026）
• E-80-01 Instrumentation Equipment - General（現行：Oct. 2021）
• E-78-02 pH Measuring Instruments（現行：Oct 2024）
• E-78-03 Turbidity Measuring Instruments（現行：Oct 2024）
• E-78-05 Fluoride Measuring Instruments（現行：Mar 2024）
• E-85-06 Ammonia Monitoring Equipment（現行：Dec. 2024）
• E-83-03 Electro-magnetic Flowmeter（現行：June 2022）
• E-83-04 Open Channel Ultrasonic Flowmeter（現行：November. 2021）
• E-78-04 Programmable Logic Controller（現行：October 2021）

EM-00-01 Inspection, Testing and Reporting

Volume IV · 水務署索引頁 · 共 5 個版本可下載

※ 掃描檔，沒有文字層，日期以第一頁影像核對。

逐版改動 Changes between consecutive editions

• 2.2005 → 6.2010（2010 ed. cl.1.5-1.6 (acceptance tests/SAT), cl.2.3, cl.4）：Site Acceptance Test provisions added (type test / FAT / SAT table; written Request for Inspection Forms to Purchaser at least 5 working days before SAT); notice to IIB stays 15 working days; new rule that the person inspecting shall not be the person endorsing the report; L.V. qualification row adds wind turbine, VSD, PV panel and instrumentation row adds UPS, communication equipment, control system (2005 row: flowmeter, SCADA, telemetry).
• 6.2010 → 1.2013（cl.1.2, cl.2.1, cl.2.3, cl.2.6, cl.3.6）：IIB must be registered under HKIAS or an HKIAS-MRA-endorsed scheme (non-MRA bodies only if shown equivalent); IIB nomination at least two months before inspection; notice 15 working days -> three weeks; calibration 'by a recognised testing authority' -> 'traceable to International Standards by an accredited testing laboratory' (still within 12 months); SAT/Request-for-Inspection wording no longer present (site testing thereafter in EM-00-02, first issued 2.2013); no despatch until IIB and Purchaser consent in writing; different IIBs required for works FAT and site services.
• 1.2013 → 10.2017（cl.1.2, cl.2.10, cl.3.4, cl.4）：IIB eligibility widened to any one of: (1) HKIAS/MRA accreditation, (2) other national accreditation deemed equivalent, (3) at least 10 years' relevant inspection experience; Contractor's complete test report due to IIB within 3 working days; IIB inspection report due within two weeks by email and mail; instrumentation endorser must be corporate member of control/automation & instrumentation, electrical, electronics or IT discipline.
• 10.2017 → 12.2023（cl.1.2, cl.2.6, cl.2.7, cl.2.8, cl.2.10, cl.3.4, cl.3.6, cl.4.1）：Eligibility options (2)/(3) now also need Purchaser approval/acceptance; 12-month calibration 'unless otherwise approved/accepted'; documents to IIB two weeks before inspection now include FAT procedures and report formats; re-inspection gives no EOT 'or compensation event'; test-report item 'type test results and certificates' deleted; IIB must obtain Engineer/Project Manager consent and issue an acceptance note before shipment, IIB report deadline two weeks -> two (2) months, endorser initials every page; packing photos as supporting documents; H.V. row adds VSD and ozone generator, L.V. row adds inverter and electrolyser/rectifier/transformer for on-site chlorine generation, 'or equivalent qualifications to the acceptance of the Purchaser'; NEC wording (Plant and Materials, Engineer / Project Manager, approved / accepted).

現行版要點 Key requirements (current edition)

• cl.1.2 IIB: HKIAS or HKIAS-MRA accredited, or other accreditation / at least 10 years' experience with Purchaser acceptance; cl.1.4 declaration of no conflict of interest by IIB, inspector and endorser
• cl.2.1 nominate IIB at least two (2) months before inspection (contact details, accreditation certificate, representatives' CVs)
• cl.2.3 at least three (3) weeks' written notice of readiness; cl.2.7 approved drawings, technical schedules, component lists, test data sheets, FAT procedures/report formats to IIB at least two (2) weeks before inspection
• cl.2.6 test instruments calibrated, traceable to International Standards by an accredited laboratory within twelve (12) months; certificates available at inspection
• cl.2.10 Contractor's test report to IIB within three (3) working days; cl.3.4 IIB acceptance note after Engineer/PM consent, IIB report within two (2) months
• cl.3.6 no despatch until IIB and Purchaser give written consent; IIB certifies packing (photos)
• cl.4.1 instrumentation FAT (flowmeter, SCADA, telemetry, UPS, communication equipment, control system): inspector at least higher certificate in electrical/electronic/communications/computer/information engineering + 5 years; endorser corporate member of relevant discipline + 5 years; inspector and endorser different persons; different IIBs for works and site

EM-00-02 Site Installation and Testing of Mechanical, Electrical and Instrumentation Plant and Equipment - General

Volume IV · 水務署索引頁 · 共 3 個版本可下載

逐版改動 Changes between consecutive editions

• 2.2013 → 6.2020（cl.2.10, cl.3.2, 3.6, 3.7, 3.11, 3.12, cl.4.10.9, cl.5.3）：Trainer qualifications/experience to be submitted with training programme; material standards refreshed (BS EN 12329 -> BS EN ISO 2081; BS 1449 316 S31 -> BS EN 10088 1.4401; BS 6437 -> BS EN 12201; BS 1387 -> BS EN 10255; BS EN 10137 -> BS EN 10025; BS EN 499 -> BS EN ISO 2560); DFT measurement also to BS EN ISO 12944; site test/commissioning clauses re-paginated but unchanged (test instruments calibrated within 12 months).
• 6.2020 → 2.2024（cl.2.1, 2.5, 2.7, 2.8.2, 2.9, 2.10, 2.11(new), 3.8, 3.11, 3.12(new), 4.1(new), 4.10.3, 5.2 + Appendix RFI form）：Employer working hours 09:00-17:00 -> 08:30-17:30 and programme/staff list 3 days -> two working days before; monthly photos 30 x 4R prints -> 8 JPEG (>=1 MP) by email; progress report 3 copies -> 1 and meeting notice 48 h -> two working days; Engineer's drawing comment period 21 days -> three weeks; draft O&M manual 2 sets -> 1 set (still one month before delivery); training programme 30 days -> one month with minimum syllabus; new programme clause (within three weeks of commencement); fixings/working platforms by RSE with ICE check where specified; welding/cutting to BS EN 1011, BS EN 13480-4/-5; method statement one month before site work; chemical-resistant coating and 150 mm epoxy skirt; Request for Inspection changed from 7-day request to standard RFI form (Appendix) with a deadline table (24 h before a Mon–Fri inspection; noon of the preceding Thursday for Sat/Sun; 48 h for a General Holiday); NEC terminology (Plant and Materials, Engineer / Project Manager).

現行版要點 Key requirements (current edition)

• cl.2.8.2 Contractor's drawings per EM-00-03/EM-90-01; Engineer comments within three (3) weeks; resubmission within three weeks
• cl.2.9 O&M manual per EM-00-03/EM-90-02, Part 1 draft one (1) month before delivery of plant to Site
• cl.2.10 training programme and trainer CVs one month before training
• cl.5.1 each item inspected and witness-tested in presence of Engineer's Representative before setting to work
• cl.5.2 test schedule with procedures/record formats at least one (1) month before T&C; Request for Inspection on the standard RFI form: 24 hours before a Mon–Fri inspection, noon of the preceding Thursday for Sat/Sun, 48 hours for a General Holiday (deadline advanced by 24 h where it falls on a Saturday or General Holiday)
• cl.5.3 test instruments calibrated by accredited laboratory not more than 12 months before tests; provision for fitting test instruments
• cl.6 Tests on Completion of whole plant/system after individual items commissioned

EM-00-03 General Requirements for Supply of Mechanical, Electrical and Instrumentation Plant and Equipment

Volume IV · 水務署索引頁 · 共 5 個版本可下載

逐版改動 Changes between consecutive editions

• 3.2011 → 2.2012（title; cl.1.2 (Work Execution deleted), cl.1.2 Equipment Approval, cl.1.3 Drawing Approval (new), ch.4 (deleted)）：Retitled 'General Requirements for Supply...'; Work Execution clause (programme within 1 month, monthly progress reports) deleted; equipment approval now: comment/approval within 21 days of submission, 3 certified copies within 14 days, and ordering/manufacture shall not commence before approval; new drawing-approval clause (2 copies within 1 month of award); Drawings and Instruction Manuals chapter removed (moved to new EM-90-01 and EM-90-02, both Feb 2012)
• 2.2012 → 12.2017（cl.1.2, 1.3, 1.4, 1.6, 2.1, 2.2, 2.5, 2.8, 3.2）：Approved copies 3 -> 4 and resubmission within 14 days if not approved; cl.1.4 IIB clause reworded ('at the manufacturer's works as required and in accordance with the Specification'); manuals also as PDF on CD-ROM/DVD-ROM; plant to comply with EM-00-05 green procurement; NEW cl.2.2 sentence: all materials in contact with potable water certified under WRAS (UK) or NSF (US), otherwise submit standards and deviations for approval; manufacturer at least three (3) years' experience; accessible edges deburred; cable ends heat-shrink capped.
• 12.2017 → 12.2023（cl.1.1, 1.2, 1.3, 1.5, 1.6, 2.6.4(new), 2.9, 3.7(new), ch.4(new)）：Submissions in hardcopy plus softcopy; equipment and drawing submissions one (1) hardcopy within 1 month of commencement (was 2 copies after award), comment period 21 days -> three (3) weeks, resubmission 14 days -> three weeks, approved copies 4 -> 1; spares information within 1 month of equipment-submission acceptance with priced list and packing rules, tools clause; draft manuals two months -> one (1) month before delivery, comments 21 days -> 3 weeks, portable hard drive allowed; recycled grey water/rainwater quality table added; chlorine gas pipe Yellow 08E51 and OSCG pipe colour labels; Certificates of Compliance and Origin; Intellectual Property and Proprietary Rights chapter; 'Plant and Materials' / 'Engineer / Project Manager' wording.
• 12.2023 → 10.2025（cl.2.2, cl.2.9, cl.2.10 (new), ch.4）：WRAS/NSF potable-water certification sentence deleted from cl.2.2 and replaced by 'alternative offers to other national/international standards may be accepted if demonstrated equivalent or superior'; NEW cl.2.10 Pipe and Fitting in contact with Fresh Water: manufacturer's AS/NZS 4020:2018 leachability type-test reports for Engineer/PM approval, Table A metal limits (Sb 0.02, As 0.01, Ba 1.3, B 2.4, Cd 0.003, Cr 0.05, Cu 2, Pb 0.01, Hg 0.006, Ni 0.07, Se 0.04, U 0.03 mg/L), lead <=3.5% by mass in metallic materials, solder Pb <=0.07% / Sb <=0.1%, brazing Cd <=0.01%, non-metallics to BS 6920-1:2014, -2.1, -2.4, -2.5, -2.6 with Table A replacing BS 6920 Table 1; treated-water pumps/valves/pipes colour Ultra Light Grey/Ultra Light Blue 18C31 -> Blue 18E53; IPR chapter renumbered into 4.1(1)-(5) and 4.2(1)-(9).

現行版要點 Key requirements (current edition)

• cl.1.2 equipment submission (make, model, rating, literature, standard drawings) one hardcopy + softcopy within one (1) month of commencement; comment within three (3) weeks; ordering/manufacture shall not commence before approval; cl.1.3 drawings on the same timetable
• cl.1.4 inspection, examination and tests witnessed by IIB at manufacturer's works per EM-00-01
• cl.1.5 priced spares list within one month of equipment-submission acceptance; cl.1.6 draft instruction manuals per EM-90-02 at least one (1) month before delivery, final manuals also as PDF
• cl.2.3 comply with latest international standards; cl.2.4 design for 100% RH, 35 deg C average / 40 deg C for 4 hours; cl.2.5 manufacturer at least 3 years' experience with reference list
• cl.2.6.2 treated-water analysis to be handled (pH 6.4-9.2, turbidity <0.1-2.5 FTU, residual chlorine 0.2-3.0 mg/l, conductivity 33-266 uS/cm); cl.2.6.1 raw water and cl.2.6.3 salt water tables
• cl.2.10 fresh-water contact materials: AS/NZS 4020:2018 leachability type-test reports, Table A metal limits, lead <=3.5% by mass, solder/brazing limits, non-metallics to BS 6920 series
• cl.3 packing and shipping (tropical treatment, desiccated packages >2 m3); cl.3.7 Certificates of Compliance and Origin authenticated by manufacturer
• ch.4 IPR: software licence evidence before delivery, Employer may copy licensed programs, non-exclusive design licence

EM-02-05 Chlorine Residual Analyzer

Volume IV · 水務署索引頁 · 共 4 個版本可下載

逐版改動 Changes between consecutive editions

• 3.2008 → 6.2014（cl.1 General; cl.2 Design (text and requirements table)）：Wetted materials: 'all materials in contact with the water sample ... resistant to corrosion by chlorinated water and added chemicals' -> 'all parts of the analyzer in contact with the sampled water ... chlorinated water and the chemical reagents required for measurement'; outputs: 'one 4-20 mA output and alarms for system abnormal status' -> 'one 4-20 mA measurement output, one signal-limit alarm adjustable 0-100% of range and one equipment-failure alarm'; table: 'Minimum detection limit: at least 0.05 mg/litre' -> 'Lower limit of detection: 0.05 mg/litre'; 'Output signal 4-20 mA' -> '4-20 mA capable of driving a 500 ohm load'; 'Output contacts 2A 220V 50Hz SPDT for each alarm' -> 'Volt-free contact rated at 2A 220V a.c.'; unchanged: DPD colorimetric free/total, 0-5 mg/l, better than +/-5% of span, cycle <3 min, 5-40 deg C, IP62 corrosion-resistant, 30 days unattended, 1-year chemicals/installation kit/maintenance kit.
• 6.2014 → 9.2020（cl.2 requirements table (Measuring range, Accuracy, Enclosure rating)）：Measuring range 0-5 -> 0-10 mg/litre; accuracy 'better than +/-5% of span' -> 'better than +/-5% of span from 0-5 mg/litre and +/-10% of span from 5-10 mg/litre'; enclosure IP62 -> IP65 with corrosion-resistant material; measuring principle, LOD, cycle time, outputs, alarms, supply and accessories unchanged.
• 9.2020 → 5.2026（cl.2 Design (paragraph 3); cl.1, cl.3 editorial）：Adds 'Digital communication format such as Modbus or Profibus protocol etc. shall be provided subject to the market availability and application environment'; editorial rewording only elsewhere ('corrosion caused by', 'designed for low maintenance', 'these instruments, together with the analyzer'); table values unchanged (0-10 mg/l, +/-5%/+/-10% of span, LOD 0.05 mg/l, <3 min, 5-40 deg C, IP65, 4-20 mA 500 ohm, 2A 220V a.c. volt-free, 220V 50Hz a.c.).

現行版要點 Key requirements (current edition)

• cl.2 measuring principle: colorimetric DPD (N,N-diethyl-p-phenylenediamine), free or total residual chlorine by reagent set; built-in controller for chlorination control; self-test diagnostics and front LCD/LED
• cl.2 outputs: one 4-20 mA (500 ohm) measurement output, one signal-limit alarm adjustable 0-100% of range, one equipment-failure alarm, volt-free contacts 2A 220V a.c.; Modbus/Profibus digital comms subject to market availability and application environment
• cl.2 table: range 0-10 mg/l; accuracy better than +/-5% of span (0-5 mg/l) and +/-10% of span (5-10 mg/l); lower limit of detection 0.05 mg/l; cycle time <3 minutes; operating temperature 5-40 deg C; enclosure IP65 with corrosion-resistant material; supply 220V 50Hz a.c.
• cl.2 low-maintenance design, continuous unattended operation for at least 30 days; cl.1 all wetted parts resistant to chlorinated water and reagents
• cl.3 where sample strainer, flow regulator, gauge, reagent feeder/reservoir are specified they and the analyser are housed in a free-standing floor-mounted stainless steel panel; consumables for one year continuous operation: chemicals, installation kit, maintenance kit

E-80-01 Instrumentation Equipment - General

Volume II · 水務署索引頁 · 共 4 個版本可下載

逐版改動 Changes between consecutive editions

• 5.2006 → 10.2010（cl.1.3, cl.2.1, cl.2.2, cl.4.4, cl.5）：'British Standards' replaced by international standards throughout; BS 2782, BS 4584, BS 4778-3, BS 5750, BS 5760 removed and BS EN 60529 -> IEC 60529; flame retardancy 'in compliance with related international standards'; reliability clause no longer cites BS 4778-3/5750/5760 and PCB-to-BS 4584 dropped; earth wiring green -> green/yellow; IP ratings unchanged (IP22 in panel, IP54 indoor, IP67 outdoor, IP68 pit).
• 10.2010 → 10.2015（cl.2.2, cl.2.3, cl.3.2, cl.3.3, cl.4.4, cl.6.2, cl.6.4）：Exterior fasteners 'stainless steel 316' -> 'stainless steel or chromium plated' and instrument screws brass/bronze/stainless; relay case IP64 -> IP54 and epoxy-encapsulated transformer windings deleted; outdoor instruments IP67 -> IP65; IP68 condition '3 metres for 48 hours' -> '5 metres for 8 hours'; enclosure requirements re-lettered (a)(i)-(v), (b)(i)-(vi); 'continuous operation over designed life of 25 years' -> 'corrosion-resistant materials maintaining properties for minimum 25 years' and MTBF >=10^6 h for solid-state components deleted; locks: chromium-plated brass cylinder locks with two sets of keys (was three); anti-condensation heater with humidity sensor and 16A double-pole isolating switch (was thermostatically controlled heaters).
• 10.2015 → 10.2021（cl.1.2, cl.1.3, cl.3.3(b)(iv)/(vi), cl.4.2, cl.5, cl.6.3）：Indoor equipment must also withstand 0-100% RH with condensation in caverns, pipework tunnel portals and raw water chambers; standards list titles refreshed; paint one undercoat (was two); outdoor/chemical-area cubicles 2 mm stainless steel 316 grade (1.5 mm 316 for small wall-mounted); NEW: signal transmission of electromagnetic flowmeters by HART protocol via hardwire to PLC/DCS unless otherwise specified; 10% spare terminals 'or otherwise specified'; label inscriptions bilingual (Chinese above/left of English, same character size).

現行版要點 Key requirements (current edition)

• cl.1.1 supply 220V 50Hz, +/-6% voltage, +/-2% frequency; d.c. per related spec
• cl.1.2 indoor 0-40 deg C, 0-98% RH with condensation (0-100% in adverse areas such as caverns, tunnel portals, raw water chambers); outdoor 0-40 deg C under tropical sun, 0-100% RH
• cl.2.3 external control/alarm via volt-free contacts; relay contacts >=2A 220V 50Hz, 0.5A 110V d.c., 3A 24V d.c.; fuses to BS 88
• cl.3.2 degree of protection to IEC 60529: IP22 inside panel, IP54 separately mounted indoors / panel faces, IP65 outdoors, IP68 (5 m, 8 h) in pits
• cl.3.3 outdoor or chemical-area cubicles 2 mm stainless steel 316 (1.5 mm for wall-mounted <=1000 x 800 mm); indoor 2 mm mild steel; SS316 hinges; gland plates >=250 mm above base
• cl.4.2 analogue transmission 4-20 mA d.c. to IEC 60381-1, transmitters drive 1600 ohm; electromagnetic flowmeter signals by HART via hardwire to PLC/DCS
• cl.4.4 corrosion-resistant parts keep properties >=25 years; commercially available components; gold-plated PCB edge connectors with keying; functional/reliability tests on all PCBs
• cl.5 IEC 60947-7-1 DIN-rail terminals, power segregated from signal, >=10% spare terminals, wiring black a.c./grey d.c./green-yellow earth
• cl.6.2 door locks with two keys; cl.6.3 bilingual engraved labels; cl.6.4 anti-condensation heater with humidity sensor and 16A DP switch; cl.6.5 extension PCB

E-78-02 pH Measuring Instruments

Volume II · 水務署索引頁 · 共 4 個版本可下載

※ 掃描檔，沒有文字層，日期以第一頁影像核對。

逐版改動 Changes between consecutive editions

• 3.2007 → 4.2014（cl.1 Design; cl.2(a) Transmitter; cl.2(b) pH Sensor）：'pH analyser' renamed 'transmitter'; enclosure reference BS EN 60529 -> IEC 60529 and materials GRP or aluminium-epoxy -> aluminium with epoxy/polyester coating, GRP, polycarbonate or other high-strength engineering plastics; integral preamplifier (mandatory) -> 'optional integrated pre-amplifier'; 15 m control cable only if sensor not integrated in transmitter; unchanged: glass + reference electrode principle with temperature compensation, accuracy 0.75% of range, sensitivity 0.01 pH, 10 s to 90%, 0-14 pH / 0-100 deg C, sample 0-50 deg C, 25-300 uS/cm, up to 600 kPa, 4-20 mA 500 ohm, 2 limit + 1 failure alarms with 2A 220V relays, flow-through IP65 / dip IP68, automatic dilute-acid spray cleaning.
• 4.2014 → 12.2019（cl.1; cl.2(a); cl.2(b)）：Local on-hold function required to suppress spikes during maintenance; requirements become minima ('at least'); accuracy written +/-0.75% over the measuring range; NEW: when fieldbus connection is specified, digital communication shall support Modbus/Profibus or HART; alarm relays >=2A 220V a.c. required 'if fieldbus communication is not required'; sensor body 'Ryton/glass or other approved and equivalent'; at least 15 m sheathed cable; at least IP65 (flow-through) / IP68 (dip); cleaning acid 'about 3% or manufacturer's recommended'.
• 12.2019 → 10.2024（cl.2(a) Transmitter）：Transmitter shall have analogue AND digital outputs; Modbus, Profibus or HART etc. 'shall be provided subject to the market availability and application environment' (no longer only when fieldbus is specified); alarms by relay contacts or by transmitting alarm signals via the digital communication format; accuracy printed as '0.75% over the measuring range' (+/- sign dropped); sensor, IP ratings, cleaning system unchanged.

現行版要點 Key requirements (current edition)

• cl.1 electrochemical cell with withdrawable sealed glass and reference electrodes, reference-electrode contamination protection, integrated temperature sensor for compensation, buffer calibration, local on-hold function
• cl.1(a) transmitter: accuracy 0.75% over measuring range, sensitivity 0.01 pH, response 10 s for 90% step, ranges 0-14 pH and 0-100 deg C; (b) sensor: sample 0-50 deg C, conductivity 25-300 uS/cm at 20 deg C, pressure up to 600 kPa
• cl.2(a) transmitter IP65 to IEC 60529, aluminium epoxy/polyester, GRP, polycarbonate or approved engineering plastic, wall-mounted, 220V 50Hz a.c.; 4-20 mA (500 ohm) outputs for pH and temperature plus Modbus/Profibus/HART; at least 4-digit backlit LCD; at least two limit alarms (0-100%) and one failure alarm, volt-free relays >=2A 220V a.c. or via digital comms
• cl.2(b) sensor powered from transmitter, optional integrated pre-amplifier, body Ryton/glass or approved equivalent, electronics sealed from wetted parts, removable electrode head, at least 15 m sheathed cable; flow-through >=IP65 wall-mounted on SS brackets, dip >=IP68 with removable guard
• cl.2(b) automatic acid spray cleaning (about 3% dilute acid or manufacturer's recommendation) initiated by timer or self-diagnostic, complete with self-cleaning set, hose pump, injector, spray head

E-78-03 Turbidity Measuring Instruments

Volume II · 水務署索引頁 · 共 4 個版本可下載

※ 掃描檔，沒有文字層，日期以第一頁影像核對。

逐版改動 Changes between consecutive editions

• 1.2007 → 4.2014（cl.1 Design; cl.2(a) Sensor; cl.2(b) Transmitter）：Ranges '0-1, 0-10 and 0-100 NTU to be specified' -> 'normally 0-100 NTU unless otherwise specified'; accuracy table (+/-5% of reading up to 0-2 NTU; +/-0.1 NTU filtered water / +/-0.2 NTU other for >0-2 to 0-10 NTU; +/-5% of reading >0-10 NTU) -> single '5% of reading'; resolution 0.01 NTU (<=10 NTU) / 0.1 NTU (>10 NTU) retained; source 'infrared LED' -> 'single wavelength infrared light beam from a light source'; % dry solids unit for sludge; 15 m cable only if sensor not integrated; sensor cleaning mechanical wiper -> 'mechanical wiper or ultrasonic cleaner'; BS EN 60529 -> IEC 60529; transmitter materials widened to aluminium epoxy/polyester, GRP, polycarbonate, engineering plastics; a pair of volt-free contacts per alarm.
• 4.2014 → 12.2019（cl.1; cl.2(a); cl.2(b)）：Light beam no longer required to be infrared ('single wavelength light beam'); accuracy +/-5% of reading; local on-hold function; at least 15 m sheathed cable; sensor enclosure 'stainless steel/titanium or other approved and equivalent'; non-contact free-fall sensors exempt from automatic cleaning; bubble trap integrated or separate; at least IP65 (flow-through) / IP68 (dip); transmitter enclosure IP65 -> at least IP54; fieldbus Modbus/Profibus or HART when specified; relay contacts >=2A 220V a.c. if fieldbus not required.
• 12.2019 → 10.2024（cl.2(b) Transmitter）：Digital communication (Modbus/Profibus or HART etc.) 'shall also be provided subject to the market availability and application environment' (no longer only when specified); alarms by relay pairs >=2A 220V a.c. or via digital communication; accuracy printed '5% of reading'; no other technical change.

現行版要點 Key requirements (current edition)

• cl.1 light-scattering principle to ISO 7027, microprocessor nephelometer, single-wavelength beam, 90-degree scatter; unit NTU (plus % dry solids for sludge)
• cl.1 range normally 0-100 NTU; resolution 0.01 NTU (<=10 NTU) and 0.1 NTU (>10 NTU); accuracy 5% of reading; response <90 s for 90% step; immune to stray light, bubbles, coarse particles, EMI; local on-hold; calibration by standard solutions or secondary standard in light path; at least 15 m sheathed cable if sensor separate
• cl.2(a) sensor powered from transmitter; enclosure stainless steel/titanium or approved equivalent; electronics sealed from wetted parts; built-in wiper or ultrasonic cleaning programmable at transmitter (not needed for non-contact free-fall types); flow-through at least IP65 with bubble trap and bottom drain cock; dip at least IP68
• cl.2(b) transmitter at least IP54 to IEC 60529, aluminium epoxy/polyester, GRP, polycarbonate or approved plastic, wall-mounted, 220V 50Hz a.c.; 4-20 mA (500 ohm) plus Modbus/Profibus/HART; at least 4-digit backlit LCD; at least two limit alarms (0-100%) and one failure alarm each with a pair of volt-free contacts >=2A 220V a.c. or via digital comms; dedicated keys for configuration/calibration

E-78-05 Fluoride Measuring Instruments

Volume II · 水務署索引頁 · 共 1 個版本可下載

逐版改動 Changes between consecutive editions

只有一個版本，沒有逐版改動可比較。

現行版要點 Key requirements (current edition)

• cl.1 ion-selective electrode (ISE) method, fluoride electrode + reference electrode, output proportional to fluoride concentration, automatic continuous temperature compensation; operate at pH 6-9; 2-point calibration with standard solutions (zero drift and slope)
• cl.1 range normally 0.1-3 ppm; resolution 0.01 ppm; accuracy 5% of reading; immune to air bubbles; electrode removable for maintenance; at least 15 m sheathed cable if sensor separate
• cl.2(a) sensor powered from transmitter, at least IP65 to IEC 60529, chemical-resistant enclosure, electronics sealed from wetted parts
• cl.2(b) transmitter at least IP54, 220V 50Hz a.c.; both analogue 4-20 mA (450 ohm) and digital interface supporting MODBUS, Profibus or HART; at least 3-digit display; at least two limit alarms (0-100%) and one failure alarm with volt-free relay pairs >=2A 220V a.c. if fieldbus not required; dedicated configuration keys

E-85-06 Ammonia Monitoring Equipment

Volume II · 水務署索引頁 · 共 4 個版本可下載

逐版改動 Changes between consecutive editions

• 7.2007 → 12.2012（cl.4 (expanded); cl.5 (new)）：Principle: colorimetric photometer only -> colorimetric, ion-selective electrode (ISE) or other approved equivalent with linear output; raw-water sampling pump (<5 min transfer) deleted; in-line filter must be automatic self-cleansing; IEC 60529 cited; range 0.02-2.00 -> 0.05-5.00 mg/l general and 0.02-2.00 for critical monitoring/control points if specified; accuracy +/-2% of value +/-0.02 mg/l -> +/-5% of value or +/-0.02 mg/l whichever greater; measuring interval <10 min -> adjustable/continuous; interface adds Profibus DP; alarms two high/low with 220V 2A contacts -> two high alarms with contacts >=24V d.c. 1A, 'out of service' and 'electronic failure' replaced by 'monitor failure'; supply adds 50Hz +/-2%; enclosure IP65 -> IP55 or above; cl.4 EQUIPMENT PARTICULARS retitled Information for Assessment and expanded (sensor life, calibration method, one-year reagent quantity, filter head/flow, brochures, price list) and cl.5 Accessories (one-year reagents, spare sensing probes, spare in-line filter, consumables).
• 12.2012 → 2.2018（cl.2(d), (g), (h); cl.3）：Ambient stated 5 deg C to 40 deg C; 'Computer interface: optional second current output or RS485 or Profibus DP' -> 'Communication interface: optional second current output, Modbus or Profibus'; alarm list collapsed to 'two volt-free contacts of at least 24V d.c. 1A for high concentration alarms'; enclosure IP55 or above -> IP54 or above.
• 2.2018 → 12.2024（cl.1; cl.2(e), (g); cl.4(e)）：Scope 'raw water' -> 'water'; '(g) Digital communication: Modbus or Profibus as specified' (optional second current output removed); local display wording 'graphic display with real time concentration, curve diagram, temperature and status'; 'O&M manual' -> 'instruction manual'; ranges, accuracy, alarms, IP54, supply unchanged.

現行版要點 Key requirements (current edition)

• cl.1 proven online technology: colorimetric, ISE or approved equivalent with linear output; automatic self-cleansing in-line filter; automatic and manual calibration; IEC 60529
• cl.2 range 0.05-5.00 mg/l general (0.02-2.00 mg/l for critical points as specified); accuracy 5% of measured value or 0.02 mg/l whichever greater; interval adjustable or continuous; ambient 5-40 deg C; graphic display with trend; 4-20 mA output; digital communication Modbus or Profibus as specified
• cl.2 alarms: two volt-free contacts >=24V d.c. 1A for high concentration; calibration automatic two-point plus manual local/remote, period selectable ~24 h; self-cleansing period selectable ~24 h; power 220V +6%, 50Hz +2%
• cl.3 electronics in enclosure IP54 or above to IEC 60529; corrosion-proof for tropical use
• cl.4 information for assessment: measurement method and sensor service life, calibration method/equipment, one-year reagent/standard quantities, in-line filter details and minimum sample head/flow, brochure/datasheet/manual, price list for reagents/spares
• cl.5 accessories: one-year reagents and standards, one set spare sensing probes, one spare in-line filter, one set consumables (tubing, seals)

E-83-03 Electro-magnetic Flowmeter

Volume II · 水務署索引頁 · 共 5 個版本可下載

※ 掃描檔，沒有文字層，日期以第一頁影像核對。

逐版改動 Changes between consecutive editions

• 1.2006 → 4.2011（cl.1; cl.2(a)-(d)）：Standards BS EN ISO 6817 / BS EN 60529 -> ISO 6817 / IEC 60529; daily self-calibration item dropped from performance table; metering tube 'stainless steel of Grade 304'; new cl.2(d) particular converter requirements: wire or wireless HART / other interface able to communicate with DCS or PLC, continuous self-checking with automatic calibration adjustment, status and alarm outputs; accuracy +/-0.5% (20-100% flow), linearity +/-0.2%, repeatability +/-0.1%, detector IP68 5 m/8 h, converter IP65, 4-20 mA 500 ohm and pulse outputs unchanged.
• 4.2011 → 12.2011（cl.1; cl.2(a), (b) new, (d); cl.3.2; cl.5; cl.6 and cl.7 new）：ISO 17025 added to standards; accuracy adds 'better than +/-1.2% for 10-20% of total flow (velocity >=0.3 m/s)'; new standard flow-range table by size (40 mm 0.3 MLD ... 2000 mm 800 MLD); zero/span auto or manual with password; diagnostics include non-full-bore detection with alarm; digital communication 'wire or optical fibre fieldbus interface using open protocol, when specified'; converter firmware/connectors for in-situ verification and partially-filled-tube alarm; works flow calibration over 10-100% (ISO 6817 for <=1000 mm; from 10% to at least 200 MLD for >1000 mm) and all test certificates before delivery; new cl.6 in-situ verification equipment (battery portable, >=20 stored results, software) and cl.7 information for assessment (IP68 type test, calibration rig/capacity/method).
• 12.2011 → 11.2017（cl.2(a), (c), (d); cl.3.1; cl.3.2; cl.4; cl.6）：Accuracy, lining and electrode clauses extended to chemical-solution service (materials as specified in PS; electrodes 'or other approved material'); converter enclosure IP65 -> IP66 or better; digital communication -> 'HART protocol via hardwire; other protocol when specified in the Particular Specification'; detector IP68 5 m/8 h 'or better'; earthing on both sides of detector head; alarms/range/span settable via local buttons; 50 m cable 'or otherwise specified'; verification equipment 'portable', software for latest Windows.
• 11.2017 → 6.2022（cl.1 standards; cl.2(c) 'Compliance to BS 6920 series'; cl.7(c)）：BS 6920 added; NEW requirement that all non-metallic materials in direct contact with the measured medium comply with BS 6920 series and be suitable for potable water at up to 35 deg C or higher; relevant BS 6920 test certificates to be submitted for assessment; no change to accuracy, IP ratings, outputs or calibration.

現行版要點 Key requirements (current edition)

• cl.2(a) accuracy better than +/-0.5% for 20-100% of total flow (potable, sea, raw water, chemical solution as specified), +/-1.2% for 10-20% (v >= 0.3 m/s), +/-1.0% for slurry/sludge; linearity better than +/-0.2% of span; repeatability <+/-0.1% of span; power <30 VA (<1000 mm) / <80 VA
• cl.2(b) calibrated to standard flow range by size (e.g. DN300 20 MLD, DN600 75 MLD, DN1200 300 MLD)
• cl.2(c) detector head IP68 to IEC 60529 for 8 h at 5 m; pulsed d.c. excitation; SS304 metering tube; lining elastomer (potable) or hard rubber/PTFE (salt water, chemical, sludge); electrodes SS316 (potable/raw) or Hastelloy C / titanium (sea water, chemical); pressure effect <0.15%; temperature effect <+/-0.05%/10 deg C; wetted non-metallics to BS 6920, suitable for potable water at >=35 deg C
• cl.2(d) converter IP66 or better; outputs 4-20 mA d.c. (500 ohm) and 24V/200 mA pulse up to 10 pulses/s; low-flow cut-off <1% with resumption at 2%; averaging 0-5 s; supply/frequency effects <+/-0.1%; 220V 50Hz or 24V d.c.; password-protected zero/span; self-diagnostics incl. non-full-bore detection; laptop configuration socket; HART via hardwire (other protocols per PS)
• cl.3.1 flanged detector, non-magnetic body, epoxy-encapsulated coils, sealed termination box, earthing both sides, insulating flanges where cathodic protection, liquid-sensing electrode for partial fill; cl.3.2 withdrawable electronics, local indication and alarms (high/low flow, partial fill), bi-directional outputs where required
• cl.4 earthing attachments and 50 m screened cable; cl.5 pressure test 150% for 30 min and works flow calibration over 10-100% to ISO 6817 (to >=200 MLD above DN1000), certificates submitted to WSD before delivery; cl.6 portable in-situ verification equipment where specified; cl.7 IP68 type-test reports, calibration rig details, BS 6920 certificates on request

E-83-04 Open Channel Ultrasonic Flowmeter

Volume II · 水務署索引頁 · 共 4 個版本可下載

※ 掃描檔，沒有文字層，日期以第一頁影像核對。

逐版改動 Changes between consecutive editions

• 5.2006 → 4.2011（cl.2(a) Transmitter）：Power supply '220 V 50 Hz' -> '220V 50 Hz or 24V d.c. as detailed in the Particular Specification'; digital communication RS485 / RS232 added; all else unchanged (transmitter IP65, transducer IP68, range 0.5-5 m, -5 to 60 deg C, 4-20 mA, 2 nos. 2A 220V SPDT contacts, accuracy +/-0.25% of measured distance).
• 4.2011 → 3.2016（cl.1; cl.2(a), (b), (c)）：IEC 60529 added; supplier to rectify equipment failing site calibration at his own cost; factory test report must include at least five calibration points; temperature -5 to 60 -> 0 to 60 deg C; indication 'alpha numeric liquid crystal display or better'; contacts 2 nos. 2A -> 2 nos. 4A 220V SPDT; digital communication RS485/RS232/Fieldbus/HART as detailed in PS; accuracy '+/-0.25% of the measured distance' -> '+/-0.25% of the measuring range' with built-in temperature compensation.
• 3.2016 → 11.2021（cl.2(a)）：Editorial only ('220V a.c. 50 Hz', 'Maximum range' label); no technical change.

現行版要點 Key requirements (current edition)

• cl.1 transit-time echo level measurement over flume/weir to IEC 61685 and IEC 60529; pre-fabricated flume/weir preferred, installation details submitted for approval before delivery; site calibration procedure for existing flumes; factory test report with at least five calibration points
• cl.2(a) transmitter IP65 to IEC 60529, 220V a.c. 50Hz or 24V d.c. per PS, 0-60 deg C, range 0.5-5 m, alphanumeric LCD or better, 4-20 mA output, 2 nos. 4A 220V a.c. SPDT contacts, digital comms RS485/RS232/Fieldbus/HART as detailed in PS
• cl.2(b) transducer non-contact, IP68, 0.5-5 m, 0-60 deg C; cl.2(c) overall accuracy +/-0.25% of measuring range with built-in temperature compensation

E-78-04 Programmable Logic Controller

Volume II · 水務署索引頁 · 共 3 個版本可下載

逐版改動 Changes between consecutive editions

• 4.2008 → 3.2015（cl.1; cl.2.1; cl.2.3; cl.2.4(b); cl.3.1; cl.3.2; cl.3.3; cl.4）：Read with E-60-03, EM-00-03, EM-90-01; miniature all-in-one PLCs allowed; third-party server access Modbus/OPC -> Modbus/TCP to IEC 60870, DNP3, serial link with modem, or OPC; passive cooling; Ethernet port supports static IP and DHCP, fibre optic where copper limit exceeded; programming languages per IEC 61131-3 (ladder, FBD, SFC, ST); d.c. systems powered by diode-OR of AC/DC converter and E-60-03 battery, power calculation on request; I/O modules keyed, at least 10% spare channels per module, wiring >=0.5 mm2, multiplexed ADC acceptable; hot-standby 'seamless' transfer; program backup on CD ROM or USB.
• 3.2015 → 10.2021（cl.1; cl.2.1; cl.3.1; cl.3.2(a)(i), (d), (e), (f) new; cl.3.3; cl.3.4; cl.4）：Read also with EM-90-02; supported protocols DNP3, Modbus/TCP, Ethernet/IP, IEC 60870-5-104 and OPC UA; Contractor submits power consumption calculation to Engineer; max I/O per card 16 -> 32; remote I/O chassis allowed subject to Engineer approval; fieldbus to IEC 61158 and IEC 61784; NEW HART I/O module with isolated analogue and HART boards; backup on CD-ROM, flash memory card or USB; programming software on Microsoft Windows notebook.

現行版要點 Key requirements (current edition)

• cl.2.1 modular PLC (chassis, CPU, I/O, comms) for 50 deg C ambient, passive cooling, expansion by hardware/firmware; third-party data access via DNP3, Modbus/TCP, Ethernet/IP, IEC 60870-5-104 or OPC UA
• cl.2.3 communicate with >=30 peers; one serial (RS232C/EIA485) and one 100 Mbps Ethernet port (static IP and DHCP); fibre where copper limits exceeded
• cl.2.4 IEC 61131-3 programming; report-by-exception to SCADA/DCS via OPC, Modbus or specified protocol; documented nomenclature
• cl.3.1 220V 50Hz via UPS (E-61-03) or 24V d.c. via diode-OR converter/battery (E-60-03); overcurrent/overvoltage protection
• cl.3.2 <=32 I/O per card, >=10% spare channels, keyed modules, hot-swappable I/O; digital outputs via relays to E-80-01; analogue 4-20 mA, 0.5% accuracy, isolated to 1500 V; fieldbus IEC 61158/61784; HART I/O module
• cl.3.3 CPU self-diagnosis, hot standby where specified, 30% I/O expansion, response <1 s analogue; program in non-volatile memory with backup media; key-switch modes
• cl.4 testing and commissioning: I/O simulation, software functional test, reload from backup, 5-point analogue calibration, failover test

四、相關規格（16 份）：現行版與最近一次改動

五、其他規格（84 份，只列編號與名稱）

展開 Volume I 至 IV 其餘規格

• E-00-03 Supply of Electrical and Instrumentation Equipment (changed to EM-00-03, Volume IV; legacy 6.2007 PDF only)
• E-00-05 Site Installation and Testing of Building Services Equipment
• E-11-01 LV Switchboard and Control Board
• E-11-04 Pumpset Control Panel
• E-12-01 Wall Mounted Motor Starter for Motors Up to 16 kW
• E-15-01 High Voltage Switchboard
• E-15-02 Gas-Insulated Vacuum Circuit-Breaker High-Voltage Switchboard
• E-30-01 Electrical Cables
• E-30-02 Earthing and Lightning Protection Materials
• E-30-04 Heat Shrinkable Power Cable Termination Kit
• E-30-11 Cable Trays and Accessories
• E-30-12 Cable Cleats, Lugs and Glands
• E-51-01 Low Voltage Squirrel Cage Induction Motors of 140 kW and Above
• E-51-02 Electric Actuator for Valve and Penstock
• E-51-03 Squirrel Cage Induction Motors of 40 - 140 kW Rating
• E-51-04 Squirrel Cage Induction Motors below 40kW
• E-51-05 Motors of 40-140kW for Submersible Pump
• E-51-06 Motors below 40kW for Submersible Pump
• E-55-01 High Voltage Motors of 3.3 kV and above
• E-60-01 Low Voltage Power Factor Correction Capacitor
• E-60-03 Gas Recombination Type Rechargeable Battery Equipment
• E-60-04 Power Transformers with Epoxy-Encapsulated Windings
• E-60-05 Bulk Oil Power Transformer
• E-60-06 Auto-Transformers for High-Voltage Motor Starters
• E-60-07 High-Voltage Power Factor Correction Capacitor
• E-61-02 Ventilation Fans for Plant Rooms
• E-61-03 Uninterruptible Power Supply Equipment
• E-64-01 Impressed Current Cathodic Protection Transformer-rectifier
• E-71-01 Chlorination System - General and Design (changed to EM-02-01, Volume IV; legacy 7.2006 PDF)
• E-71-07 Weighing Scale for Chlorine Containers (changed to EM-02-07; legacy 11.2000 PDF)
• E-71-08 Chlorination Monitoring and Control Panel (changed to EM-02-08; legacy 11.2000 PDF)
• E-81-02 Strip Chart and Paperless Recorders (Cancelled in 10.2010; 11.2006 PDF)
• E-81-03 Integrator
• E-81-04 Edgewise Indicator
• E-81-05 Indicating Controller
• E-81-06 Alarm Annunciators (Cancelled in 5.2013; 5.2007 PDF)
• E-81-07 Moving-Coil Circular Dial Indicator
• E-82-11 Lightning Protection Unit for Electronic Equipment
• E-82-21 Trip/Alarm Amplifier Unit (Cancelled in 2.2012; 1.2007 PDF)
• E-82-22 Signal Addition/Subtraction Unit (Cancelled in 2.2012; 2.2007 PDF)
• E-84-01 Conductivity Level Electrode Equipment
• E-86-02 L.V. Variable Speed Drives
• E-86-11 Electro-mechanical Pressure Switches
• E-86-31 Paddle Type No-Flow Switch
• E-86-32 Calorimetric Type No-Flow Switch
• E-86-42 Float Switch
• E-90-01 Drawing for Electrical and Instrumentation Equipment (changed to EM-90-01; legacy 8.2009 and 8.2004 PDFs)
• E-90-02 Manual for Electrical and Instrumentation Equipment (changed to EM-00-03 per index; legacy 8.2009 and 8.2004 PDFs)
• E-90-11 Drawing for Switchboard and Control Board (changed to EM-90-01; legacy 4.2010, 10.2005)
• E-90-12 Drawing for Motors of 100 kW & above and Generators of 150 kVA & above (changed to EM-90-01; legacy 4.2010, 12.2005)
• E-90-13 Drawing for Power Transformers (changed to EM-90-01; legacy 4.2010, 12.2005)
• E-90-21 Manual for Switchboard and Control Board (changed to EM-00-03 per index; legacy 4.2010, 11.2005)
• E-90-22 Manual for Motors of 100 kW & above and Generators of 150 kVA & above (changed to EM-00-03 per index; legacy 4.2010, 12.2005)
• E-98-01 Plant Room Ventilation
• M-00-03 General Specification for Supply of Mechanical Plant (changed to EM-00-03; legacy 2.2005 PDF)
• M-01-01 Centrifugal Pumps
• M-01-04 Submersible Borehole Pumps
• M-01-05 Multistage Centrifugal Pumps and Associated Equipment
• M-01-06 Chlorinator Water Supply Booster Pumps (Combined to M-01-05; legacy 2.2016, 2.2009)
• M-02-01 Valves
• M-02-02 Mild Steel Pipework (for Pressure Rating of PN 16 and PN 25)
• M-02-03 Stainless Steel Pipework (for Pressure Rating of PN 16 and PN 25)
• M-05-01 Submersible Dewatering Pumps
• M-06-03 Chlorine Absorber System (changed to EM-02-12; legacy 10.2005)
• M-06-04 Piping, Valves and Accessories for Chlorination Plant (changed to EM-02-11; legacy 3.2004)
• M-06-05 Supply of Liquid Chlorine Containers (Cancelled in 2.2024; 2.2016, 7.2010, 10.2008 PDFs)
• M-07-01 Motor-driven Air Compressor Up to 40 kW for Indoor Installation
• M-09-01 Glassfiber Reinforced Polyester Intake Screens
• M-09-02 Coated Stainless Steel Intake Screens
• EM-00-04 Site Safety, Health and Environmental Management of Mechanical and Electrical Works
• EM-00-05 Green Procurerment [sic] (current 1.2026, Revision Date 7.1.2026; referenced by EM-00-03 cl.2.1)
• EM-01-01 Lifting Appliances
• EM-01-02 Centralised Dust Extraction and Filtration System for Lime Stores
• EM-01-03 Pressure Gauges
• EM-01-04 Chemical Bag Splitting Machine and Accessories
• EM-02-01 Chlorination Plant - General & Design (Cancelled in 1.2024; 1.2013, 11.2009 PDFs)
• EM-02-02 Chlorinator
• EM-02-03 Chlorine Automatic Changeover Panel (Cancelled in 6.2023; 6.2014, 2.2008 PDFs)
• EM-02-06 Chlorine Evaporator (Cancelled in 6.2023; 7.2010, 7.2008 PDFs)
• EM-02-07 Weighing Scale for Chlorine Containers (Cancelled in 6.2023; 6.2015, 6.2009 PDFs)
• EM-02-09 Chlorine Pressure Gauges
• EM-02-10 Chlorine Room Ventilation
• EM-02-11 Piping, Valves & Accessories For Chlorination Plant
• EM-02-12 Chlorine Scrubber System

六、核實方法與注意事項

• 「現行」以水務署索引頁每行第一個（最新）下載連結為準，並與索引頁附載的 Volume IV 修訂表第 63 次（2026 年 5 月 22 日生效）及 Volume II 修訂表第 69 次（2025 年 3 月 18 日生效）交叉核對。Volume II 索引頁的修訂日期（2025 年 8 月 1 日）晚於其修訂表，但該冊沒有任何規格的日期晚於 2025 年 3 月。
• 每個版本的頁眉日期由 PDF 第一頁直接讀取；沒有文字層的掃描版（例如 EM-00-01 2010 及 2013 年版、E-78-02 及 E-78-03 2007 年版、E-83-03 及 E-83-04 2011 年版）以光學字元辨識後對照頁面影像核對，日期均以影像為準。
• 改動摘要由連續版本的文字逐段逐字比對後，再閱讀改動條款整理而成；只列實質改動，分頁、頁眉及排版改動不列；條款編號以較新版本為準，被刪除的條款除外。
• 索引頁列為現行的檔案，有部分檔名帶有 DRAFT、Draft_consolidated、Draft2 或 Final 字樣（例如 EM-00-02 2024 年 2 月版、E-80-01 2021 年 10 月版、E-00-01 2021 年 10 月版、E-86-03 及 E-88-05 2021 年 11 月版、E-78-04 2021 年 10 月版、E-83-04 2021 年 11 月版），但第一頁均無草稿標記；以索引頁的標示為準。
• 索引頁標籤與文件頁眉偶有出入：EM-01-05 檔名帶 102021 而封面為 2022 年 4 月（索引標籤 4.2022）；E-82-01 檔名帶 06_2024 而封面為 2024 年 10 月、第二頁頁腳為 2024 年 6 月（索引標籤 10.2024）；E-83-03 2006 年 1 月版封面拼作 ELECTROMAGNETIC，其後版本作 ELECTRO-MAGNETIC；E-78-02 2024 年 10 月版封面用單數 INSTRUMENT；EM-00-03 2025 年 10 月版封面寫 PLANT AND EQUIPMENT，內頁標題寫 PLANT AND MATERIALS。本頁一律以頁眉日期為準。
• EM-02-08（2023 年 5 月取消）、EM-02-01（2024 年 1 月）、EM-02-03、EM-02-06 及 EM-02-07（2023 年 6 月）、E-81-02、E-81-06、E-82-21、E-82-22 及 M-06-05 在索引頁標示為已取消；最後版本仍可下載，但沒有任何版本屬現行。
• 分類屬本頁判斷：E-78-04（可編程邏輯控制器）列為核心，因四冊之內沒有獨立的遙測、RTU 或 SCADA 標準規格（E-88-05 只涵蓋遙測電源，E-89-01 只涵蓋自動讀錶系統戶外站）；E-82-01、E-86-41、E-82-12、E-86-03、E-88-05、E-89-01、E-00-01、E-00-02、EM-90-01 及 EM-90-02 作為一般儀表或呈交規格列為相關。
• Volume IV 索引頁內 EM-00-03、EM-02-01、EM-02-07、EM-02-08、EM-02-11、EM-02-12、EM-90-01 及 EM-90-02 各行附有「changed from」指向 Volume I 至 III 舊編號的連結，那些是導覽連結，不是版本。

資料來源

1. 水務署機電標準規格 Volume I 至 IV 索引頁及各版本 PDF（見各規格的連結）。wsd.gov.hk
2. Volume IV 修訂表第 63 次及 Volume II 修訂表第 69 次（水務署索引頁附載）。

本頁為一般性技術資訊，以核實日期的水務署公開文件為準；個別合約適用的規格版本以該合約的招標文件為準。港德環保科技並非註冊承建商，不提供獨立投標顧問服務。發現錯漏歡迎告訴我們，更正會在本頁註明日期。