CLX-Ex and Ex2 supply and repair: verify the hazardous-area assembly
Updated
CLX-Ex and Ex2 procurement requires more than matching a chlorine range. Verify the certified assembly, area classification, protection system and repair scope before approving a supply or replacement.
Key takeaways
- Attach the Ex marking and certificate reference.
- Identify purge/protection equipment.
- Define repair and return-to-service evidence.
Read the family guide as a comparison, not a certificate
The HF scientific guide describes Ex and Ex2 for Class I, Zone 1 and Zone 2 environments and lists IECEx and ATEX among their certifications. It distinguishes the Ex stainless enclosure from the Ex2 enclosure with a viewing window. These descriptions do not replace the individual certificate or its conditions. Obtain the exact marking, certificate schedule and installed configuration for the proposed unit.
Include the protection system in the scope
A hazardous-area analyser may depend on enclosure pressurisation, purge controls and associated supplies. The quotation must identify the complete approved assembly and any external equipment needed for operation. Do not bypass protection devices, alter glands or substitute components on the assumption that the analytical chassis is identical to a non-hazardous model. Work must follow the applicable manufacturer instructions and vessel safety procedures.
Separate repairability from release to service
Sea Clean accepts supply and repair enquiries for all CLX variants. For Ex equipment, the assessment must determine whether specialist or approved repair involvement is needed and which records support return to service. Ask for the diagnosed fault, parts replaced, checks performed and any certificate implications. An instrument that reads correctly on a bench has not automatically demonstrated hazardous-area integrity.
Order reagents and options explicitly
The family guide lists A28031 for Ex and 28034 for Ex2, with reagents purchased separately. It identifies 09991 liquid annual supply based on estimated BWMS cycles and optional range/cycle configurations. Use these as reference points, then confirm the actual revision and accepted configuration. Do not treat “annual supply” as permission to leave one activated bottle connected for a year.
Illustrative procurement scenario
A tanker needs a replacement analyser urgently. The enquiry includes the Ex plate and purge-system details, allowing the proposed replacement to be reviewed as a complete assembly rather than substituting an available non-Ex monitor.
Request a matched CLX quotation
Sea Clean is a Watts distributor. We source, supply and repair all CLX variants and supply normal, zig-zag and J.A.W. TRO reagent kits competitively. Stocked products are ready for delivery; confirm the exact item and quantity. Estimated DHL Express transit is 1–4 days on suitable routes, subject to dispatch, customs and final vessel handover.
For this enquiry, include: Ex/Ex2 model and serial; hazardous-area marking and certificate; protection-system details; fault history; requested supply or repair; port and deadline.
Equipment enquiries: CLX monitor supply
Consumables: TRO reagent kits
Service support: BWTS service and calibration
Frequently asked questions
Can an XT monitor replace an Ex monitor because the chemistry is similar?
Not on that basis. Hazardous-area suitability and the approved system configuration must be established independently.
Manufacturer PDFs & direct enquiries
Original manufacturer documents hosted directly by Sea Clean. Match the model and revision before use.
Email CLX enquiry to post@seaclean.no
Opens an email draft. Attach nameplate and bottle photographs, add your requirements, then send. No website form.
Explore all 15 CLX buying and service guides
- HF scientific CLX family: select the model and generation before buying
- CLX-XT 28030 datasheet: what an engineering purchase specification needs
- OEM-labelled CLX and MU units: identifying the monitor behind the BWMS label
- CLX-Ex and Ex2 supply and repair: verify the hazardous-area assembly
- CLX-XT versus XT2: enclosure and retrofit checks before replacement
- Techcross zig-zag TRO reagent kits: match the installed bottle arrangement
- J.A.W. powder reagent kits: distilled-water preparation and purchase checks
- Compare normal, zig-zag and J.A.W. TRO kits on delivered usable cost
- HF scientific CLX spare parts: avoid a near-match service kit
- CLX stock and DHL Express delivery: plan the final handover to the vessel
- CLX-XT repair or replacement: make the decision from the fault evidence
- CLX-XT cooling chamber: investigate shortened reagent life safely
- Legacy CLX to current CLX: USB-C, Modbus and analogue-output upgrade checks
- CLX DPD accuracy: turn a datasheet tolerance into an acceptance requirement
- Watts distributor CLX support: one enquiry for supply, repair and service
Sources
- HF scientific ballast-water monitor product guide — CLX-XT, XT2, Ex and Ex2 comparisons; confirm individual certificates and revisions. Manufacturer PDF hosted by Sea Clean; reviewed 9 November 2026.
Related articles
- CLX-XT versus XT2: enclosure and retrofit checks before replacement
- Techcross zig-zag TRO reagent kits: match the installed bottle arrangement
- J.A.W. powder reagent kits: distilled-water preparation and purchase checks
- Compare normal, zig-zag and J.A.W. TRO kits on delivered usable cost
- HF scientific CLX spare parts: avoid a near-match service kit
- CLX stock and DHL Express delivery: plan the final handover to the vessel