SAMON GS230-HFC: detection unit with built-in sensor, for synthetic refrigerants A1 and A2L (HFC including R32 and HFO) - unit with relay output and semiconductor sensor (SC)
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GK-Tools FlashGuard EX - Replacement Oxygen Sensor
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Do you need to buy large quantities?
Replacement Oxygen Sensor (O₂) for GK-Tools FlashGuard EX Detector
Original replacement electrochemical sensor for monitoring Oxygen (O₂) concentration, designed for integration and replacement inside the GK-TOOLS FlashGuard EX portable detector.
During maintenance and commissioning on HVACR systems — particularly on circuits charged with CO₂ (R744) where an accidental leak can displace ambient air and create asphyxiating atmospheres — the efficiency and accuracy of the O₂ sensor are critical requirements for operator safety. Electrochemical oxygen sensors are consumable components subject to natural depletion over time; periodic replacement restores the instrument's original responsiveness and reliability.
Compatibility: GK-TOOLS FlashGuard EX portable multi-gas detector
Technology: High-sensitivity electrochemical
Measuring range: 0 – 30% VOL
Main Features
- High Sensitivity and Fast Response: Continuously measures oxygen content from 0 to 30% VOL with a resolution of 0.1% VOL and an accuracy of ≤ ±3% F.S.
- Certified Compatibility: Calibrated component engineered for the 32-bit microprocessor architecture of the FlashGuard EX detector, maintaining the instrument's operational compliance.
- Threshold and Alarm Management: Fully compatible with the two-level audible, visual, and vibration alarm signals (Alarm 1 and Alarm 2) configurable via the device menu.
- Ready for Span and Zero Calibration: Supports quick calibration in clean air (20.9% VOL) or using a calibration gas line via the dedicated calibration cap.
Technical Specifications
| Parameter | Value |
|---|---|
| Target gas | Oxygen (O₂) |
| Measuring principle | Electrochemical cell |
| Standard measuring range | 0 – 30% VOL |
| Resolution | 0.1% VOL |
| Instrument accuracy | ≤ ±3% Full Scale (F.S.) |
| Operating temperature | -20 °C to +50 °C |
| Operating humidity | 10 – 95% RH (non-condensing) |
| Operating pressure | 86 – 106 kPa |
Installation and Maintenance Notes
Technical warning: Sensor replacement must be carried out in compliance with instrument safety procedures. After installing the new sensor, always perform a zero/span calibration procedure in clean air free of contaminants before returning the device to operational service.
| EAN | n.d. |
| Cylinder/Container size | Non Applicabile |
| Package weight | 0.3 Kg. |
| Item number | F-AF-SC-EX-SEN-O2 |
| Packaging | Cardboard box |
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