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Specifications
Mfr. Part #:
VQ22TB
Key Attributes
Model Number:
VQ22TB
Product Description
Product Overview
The VQ22 is an improved, poison-resistant combustible gas detector element designed for the detection of combustible gases, particularly methane in air mixtures, from 0.1% concentration upwards. It features two matched elements and offers no interference from water vapour or carbon dioxide. The VQ22 is engineered for use in atmospheres potentially containing traces of silicone and other poisoning agents, ensuring reliable performance. When used with the recommended bridge circuit and mounting arrangement, it provides a minimum sensitivity of 10 mV/% methane.Product Attributes
- Brand: SGX Sensortech(IS) Ltd
- Product Type: Combustible Gas Detector Elements
- Model: VQ22
- Element Identification: Serial number (red on detector, black on compensator)
- Detector Marking: Red circular label on base
- Origin: Registered in England
- Material: Stainless Steel Gauze (60 mesh)
Technical Specifications
| Specification | Value | Notes |
|---|---|---|
| Operation | Continuous | See note 1 |
| Bridge Supply Voltage | 2.0 + 0.1 V | |
| Bridge Power Consumption | 0.48 W max | |
| Typical Average Sensor Current | 175 mA | |
| Minimum Sensitivity | 10 mV/% methane | See note 2 |
| Linearity | Linear up to 5% methane | |
| Response Time (to register 1 1/4% in a 2 1/2% concentration) | 2 seconds | See notes 2 and 3 |
| Maximum Methane Concentration | 5 % | See note 4 |
| Mounting | See page 3 | |
| Outline Dimensions (A) | 11.05 + 0.25 mm | |
| Outline Dimensions (B) | 6.10 + 0.25 mm | |
| Outline Dimensions (C) | 3.56 + 0.13 mm | |
| Outline Dimensions (D) | 63.50 min mm | |
| Outline Dimensions (E) | 1.02 mm | |
| Outline Dimensions (F) | 7.37 + 0.51 mm | |
| Outline Dimensions (G) | 8.20 max mm | |
| Outline Dimensions (H) | 9.53 mm | |
| Outline Dimensions (J) | 1.52 mm | No bends may be made in this length. |
| Recommended Mounting Arrangement (AA) | 19.05 max mm | |
| Recommended Mounting Arrangement (AB) | 9.53 + 0.13 mm | |
| Recommended Mounting Arrangement (AC) | 8.33 + 0.13 mm | |
| Recommended Mounting Arrangement (AD) | 8.20 min mm | |
| Recommended Mounting Arrangement (AE) | 19.05 max mm | |
| Recommended Mounting Arrangement (AF) | 9.53 + 0.13 mm | |
| Recommended Mounting Arrangement (AG) | 8.20 min mm | |
| Flow Rate (for filter) | 500 cm3/min |
2411261541_Amphenol-VQ22TB_C1526425.pdf
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