BW SR-X2V O2 Sensor (4OXV) — OEM-compatible replacement for GasAlert MicroClip XL/XT, restores accurate oxygen readings

The BW SR-X2V (4OXV) is a replacement oxygen (O2) sensor designed for BW/CiTiceL-equipped portable gas detectors to reliably monitor ambient oxygen levels.

This original-equipment compatible sensor fits a range of BW portable monitors and is intended for technicians, safety managers, and maintenance teams who need a quick, accurate swap-out for aged or depleted oxygen sensing elements. It’s manufactured to the specifications used in BW and CiTiceL sensors and is offered as a brand-new module. Note: the sensor cap or body color may vary by gas sensor type or production changes; the product image is illustrative.

Which devices does the SR-X2V replace or fit?

The SR-X2V oxygen sensor is engineered to work with specific BW and CiTiceL portable detectors, offering a straightforward replacement path for compatible models. Confirm compatibility against your instrument's manual or part number before ordering.

• Common installs: GasAlert MicroClip XL and GasAlert MicroClip XT
• Also used in some GasAlertMax and GasAlertMax XT II configurations
• Cross-references: check your detector’s sensor part listing for SR-series oxygen sensors

How does this sensor affect detector performance?

Replacing a worn or expired oxygen sensor with an SR-X2V restores the detector’s ability to sense oxygen within its designed range, keeping alarm thresholds responsive and readings stable. It does not change the instrument’s calibration requirements.

• Restores accurate O2 measurement and alarm activation
• Maintains expected response time for oxygen events
• Requires usual calibration and bump-testing after installation

What should I know about installation and maintenance?

Installation is typically a simple in-field swap, but always follow the detector manufacturer’s service instructions. After fitting the new sensor, run a bump test and, if necessary, perform calibration to confirm correct operation.

• Power down device before sensor replacement
• Observe polarity and connector alignment when seating sensor
• Perform functional checks: bump test and calibration as recommended

Are there any special ordering or product notes?

International versions of detectors and sensors can differ in labeling, fit, or documentation; check regional compatibility. The pictured graphic is for reference only—actual sensor cap or body colors may change with manufacturing updates or different gas types.

• Sold new; verify part number SR-X2V / 4OXV before purchase
• May have different packaging or instructions for international sales
• Keep supply records for maintenance logs and replacement schedules

Who is this for: procurement and safety professionals, field technicians, and maintenance staff responsible for the ongoing operation of BW and CiTiceL portable gas detection fleets. If you manage detectors in industrial, confined-space, or general safety programs and need a factory-spec oxygen sensing element replacement, the SR-X2V provides a direct option to maintain operational readiness.