Honeywell SR-W-MP75C MICROpeL Combustible LEL Sensor
Overview
The Honeywell SR-W-MP75C is a genuine replacement MICROpeL combustible (LEL) gas sensor engineered for the BW Technologies by Honeywell portable gas detection platform, including the GasAlertMicroClip XT, XL and X3, GasAlertMax XT II, and GasAlertMicroClip families. Built around Honeywell’s MICROpeL catalytic bead sensing element, the SR-W-MP75C measures flammable gas and vapor concentration across a 0 to 100% Lower Explosive Limit (LEL) range with 1% LEL resolution, giving safety officers and gas testing technicians a dependable, factory-calibrated replacement part that restores full combustible-gas detection performance without replacing the entire instrument.
As the official authorized partner and exclusive regional representative for Honeywell in Oman, Seven Star LLC proudly supplies the SR-W-MP75C to refineries, LNG terminals, downstream processing plants, and HSE departments across the Sultanate of Oman and the wider GCC. Facilities in Muscat, Sohar, and Salalah rely on Seven Star LLC to keep confined-space entry teams, hot-work crews, and permit-to-work programs stocked with genuine Honeywell replacement sensors, backed by manufacturer warranty and technical support rather than grey-market substitutes of uncertain calibration history.
Measurement Principle
The Honeywell SR-W-MP75C uses a catalytic (pellistor) bead sensing technology in which a heated, catalyst-coated bead oxidizes combustible gas molecules that diffuse through the integrated heavy-duty silicone filter. The oxidation reaction raises the bead’s temperature and, consequently, its electrical resistance, in direct proportion to the concentration of flammable gas present in the surrounding atmosphere. This resistance change is measured against a reference (compensator) bead in a balanced Wheatstone-bridge circuit, producing a clean, linear millivolt output that the host instrument’s microprocessor converts into a percentage of the Lower Explosive Limit.
Because the MICROpeL sensing element is factory-poisoned-resistant and filtered against silicone and sulfur compound contamination, it maintains stable sensitivity over repeated calibration cycles in demanding oilfield, petrochemical, and marine environments. The practical result for the end user is a sensor that requires no field electronics adjustment beyond routine bump testing and calibration, drops directly into the existing sensor cradle, and restores full four-gas or single-gas monitoring capability within minutes, minimizing instrument downtime during safety-critical operations.
Engineering Design of the Honeywell SR-W-MP75C
Physically, the Honeywell SR-W-MP75C is housed in a compact cylindrical sensor cartridge with gold-plated pin contacts that mate directly with the sensor socket inside compatible BW Technologies instruments, requiring no soldering, wiring, or recalibration hardware beyond the instrument’s standard auto-calibration routine. The sensor incorporates a heavy-duty silicone filter cap that protects the catalytic bead element from dust, moisture ingress, and silicone vapor poisoning while still allowing rapid gas diffusion for fast T90 response times.
The cartridge is rated for operation across a wide ambient temperature range of -40°C to +55°C, making it suitable for both Gulf summer heat and cold-chain or offshore night-shift conditions. Its plug-and-play mechanical interface means field technicians can replace an expired or damaged sensor in under a minute using only the instrument’s sensor door, with no special tools required, and the sensor is fully compatible with automated docking-station calibration systems such as the Honeywell Micro Dock II and IntelliDoX platforms for streamlined fleet management.
Key Features
The Honeywell SR-W-MP75C replacement LEL sensor delivers dependable combustible gas detection with the following key characteristics:
- Genuine Honeywell MICROpeL catalytic bead sensing element calibrated at the factory for 0-100% LEL methane or pentane equivalence.
- Direct plug-and-play compatibility with GasAlertMicroClip XT, XL, X3, GasAlertMax XT II, and related BW Technologies instruments.
- Heavy-duty silicone filter that resists poisoning from silicone vapors, sulfur compounds, and particulate contamination.
- Wide operating temperature range of -40°C to +55°C for reliable performance in harsh industrial and offshore climates.
- Fast T90 response time supporting rapid confined-space entry and hot-work permit gas testing.
- Full compatibility with automated calibration docking stations for streamlined fleet-wide maintenance.
- Long service life with stable zero and span calibration across repeated bump tests.
- Simple field replacement without soldering, rewiring, or specialist tools, minimizing instrument downtime.
Industrial Applications
The Honeywell SR-W-MP75C is a critical spare part for any facility running a portable gas detection safety program, including oil and gas upstream production, refining and petrochemical processing, LNG loading and storage terminals, marine bunkering operations, and confined-space entry teams working in tank farms, sewer systems, and process vessels. HSE managers rely on genuine replacement sensors like the SR-W-MP75C to keep instrument fleets compliant with permit-to-work and confined-space entry regulations without the calibration drift risk associated with counterfeit or expired third-party sensors.
As the officially authorized partner for Honeywell, Seven Star LLC distributes the SR-W-MP75C throughout Oman and the GCC, supporting refineries and industrial zones in Sohar, Salalah, and Muscat as well as offshore platforms and district cooling plants that depend on continuous combustible gas monitoring. Regional stock availability means safety departments can replace expired or damaged sensors quickly, avoiding the extended lead times associated with importing gas detection spares from outside the region.
Technical Specifications
The table below summarizes the primary technical specifications of the Honeywell SR-W-MP75C replacement combustible sensor, confirming why the Honeywell SR-W-MP75C remains the trusted choice for regional gas detection fleets.
| Parameter | Specification |
|---|---|
| Model | Honeywell SR-W-MP75C |
| Sensor Type | MICROpeL catalytic bead (pellistor), filtered |
| Measurement Range | 0 – 100% LEL |
| Resolution | 1% LEL |
| Filter | Heavy-duty silicone filter, poison-resistant |
| Operating Temperature | -40°C to +55°C |
| Compatible Instruments | GasAlertMicroClip XT/XL/X3, GasAlertMax XT II |
| Interface | Plug-and-play pin connector, no soldering required |
| Calibration | Compatible with Micro Dock II / IntelliDoX automated calibration |
| Brand | Honeywell / BW Technologies |
Call To Action
Seven Star LLC invites facility engineers, HSE managers, and procurement teams across Oman and the GCC to submit a formal RFQ for the Honeywell SR-W-MP75C MICROpeL replacement combustible sensor. As the authorized partner for Honeywell in Oman and the GCC, Seven Star LLC maintains regional warehouse stock for fast dispatch, provides full technical datasheets on request, and offers direct access to our instrumentation division for calibration and fleet-support guidance. Contact Seven Star LLC today to secure genuine Honeywell gas detection spares with manufacturer-backed quality assurance.
Honeywell is a global technology corporation specializing in advanced industrial automation, process control architectures, and precision field instrumentation. At Seven Star LLC, we provide Honeywell’s robust engineering solutions, including distributed control systems (DCS), smart pressure and temperature transmitters, and modular safety systems. Engineered to optimize complex production loops and ensure rigorous cyber-physical security, these technologies are critical for refineries, power generation plants, and petrochemical facilities across Oman. By supplying authentic Honeywell hardware and control platforms, Seven Star LLC enables GCC enterprises to achieve exceptional operational stability, regulatory compliance, and maximized asset throughput in demanding industrial environments.
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