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Phone: +86 16626708626Description
Key Technical Specifications
| Parameter | Value / Specification |
| Manufacturer | Expo Technologies (UK / USA) |
| Model Number | ETM-IS31-001 |
| Revision | REV 2 |
| System Compatibility | Expo Electronic Timer Module (ETM) / MiniPurge ML433 & D779 Series |
| Explosion Protection (ATEX) | II 1 G Ex ia IIC T6 Ga |
| Dust Protection (ATEX) | II 1 D Ex iaD 20 T85°C |
| IECEx / ATEX Certificates | ATEX: FM 10ATEX0003X |
| Ambient Temperature Range (T_{amb}) | −20 °C to +60 °C (−4 °F to +140 °F) |
| Housing Construction | Heavy-duty extruded aluminum, anodized finish |
| Ingress Protection | IP66 (when properly seated on timer housing) |
Product Introduction & Supply Chain Strategy
This product is a Brand New Surplus unit. It is not used, not pulled from a decommissioned plant, and not refurbished. All modules undergo rigorous quality verification to ensure OEM-level reliability. The Expo Technologies ETM-IS31-001 is an intrinsically safe (IS) battery pack specifically certified for powering Expo Electronic Timer Modules (ETM) inside hazardous area purge and pressurization systems (such as the MiniPurge ML433 and D779 ranges).
Stocking a factory-fresh ETM-IS31-001 battery pack as New Surplus provides a vital safety buffer for plant instrument technicians. When an electronic purge timer battery depletes, the system cannot measure or complete the required volume purge cycle, preventing electrical power from being safely applied to protected enclosures in Zone 1/21 or Division 1 classified areas. Keeping a genuine, unaged battery module on-site eliminates lead time variability during routine maintenance and ensures complete compliance with ATEX and IECEx safety standards.
ETM-IS31-001
ETM-IS31-001
Installation & Configuration Guide
Stage 1: Pre-Installation (Prep & Safety)
- Verify that the hazardous atmosphere is clear or obtain a Hot Work Permit before opening Purge & Pressurization system enclosures.
- Put on an ESD-grounded wrist strap prior to handling the intrinsically safe timer assembly.
- Inspect the new ETM-IS31-001 unit for undamaged housing seals and verify that the certification label (Ex ia IIC T6) matches your area classification.
Stage 2: Removal
- Unfasten the retaining screws securing the existing battery pack to the Electronic Timer Module (ETM) base.
- Carefully pull the depleted battery module straight out from the housing guide rails.
- Inspect the internal connector contacts on the timer module for corrosion, dust, or moisture ingress.
Stage 3: Installation (Clone & Seat)
- Ensure the O-ring gasket on the ETM-IS31-001 battery housing is seated correctly to maintain IP66 environmental sealing.
- Align the battery module guide pins with the socket on the ETM enclosure and press firmly until fully seated.
- Hand-tighten the retaining screws evenly to secure the aluminum casing without over-torquing.
Stage 4: Power-On & Testing
- Initiate a test purge cycle on the Expo MiniPurge system.
- Observe the Electronic Timer LCD display; verify that the countdown timer energizes and counts down without low-battery warning indicators.
- Confirm that the purge cycle completes successfully and signals the system interlock relay to permit main power application.
Firmware/Software Versions & Upgrade Notes
- Hardware Component: The ETM-IS31-001 is a sealed, intrinsically safe power supply sub-assembly and contains no configurable software or firmware.
- Revision Backward Compatibility: REV 2 () is fully backward compatible with older ETM electronic timer base units requiring the Ex ia IIC T6 battery pack.
- Hazardous Area Safety Warning: Never open, disassemble, or attempt to replace individual internal cells inside the aluminum casing. Doing so immediately voids ATEX/IECEx intrinsically safe certifications and creates a severe explosion hazard in classified environments.
Frequently Asked Questions (FAQ)
Q: Is this Expo unit brand new or refurbished?
A: This product is a Brand New Surplus unit. It is not used, not pulled from a decommissioned plant, and not refurbished. All modules undergo rigorous quality verification to ensure OEM-level reliability.
Q: Can I replace the internal battery cells myself to save on procurement costs?
A: No. The is certified as an encapsulated, intrinsically safe assembly under FM 10ATEX0003X and IECEx FME10.0001X. Attempting field repairs or cell replacement violates Ex ia safety standards and compromises plant safety.
Q: What Expo purge systems use the battery module?
A: It is primarily used with the Electronic Timer Module (ETM) fitted inside Expo MiniPurge ML433 and D779 series purge and pressurization systems for Zone 1/21 hazardous locations.
Q: How do I know when the battery needs to be replaced?
A: The electronic timer LCD panel will indicate a low-battery status flag, or the purge timer will fail to complete its countdown cycle, preventing the system main power interlock from engaging.
Q: What is the shelf life and warranty for this battery module?
A: Every Expo unit ships with a full 1-year functional warranty and is stored in climate-controlled conditions to ensure full charge capacity upon installation.
