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Product Specifications:
| Item | Replacement Sensor |
| Chemical Formula | LEL |
| Compatible Detector Grainger Part Number | 33N505 |
| Compatible Detector Model/series | Gasalert Micro |
| Detects | Combustible |
| For Detector Type | Portable |
| Gas Detected | Combustible Gas |
| Max. Operating Temp. | 104°F |
| Measurement | 0% vol to 100% vol, 0% vol to 5% vol |
| Min. Operating Temp. | -4°F |
| Part Type | Sensor |
| Resolution | 0.1% vol |
| Sensor | 0% vol to 100% vol, 0% vol to 5% vol |
| Sensor Life | 1 yr. |
| Sensor Type | Catalytic |
| Series | Micro, Micro 5 |
Shipping Info:
| Ship weight (kg) | 0.07 |
| Ship height (cm) | 3.18 |
| Ship length (cm) | 5.72 |
| Ship width (cm) | 3.18 |
| HS code | 9027102000 |
| Country of Origin | GB |
Product Variants
| Product | Model | Temp. | Gas Detected | Sensor Type | Min. Operating Temp. | Max. Operating Temp. | Sensor Life | Compatible Detector Grainger Part Number | Chemical Formula | Pkg. Qty. | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
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SR-V04 | -10°C to +40°C | Chlorine Dioxide | Electrochemical | 14°F | 104°F | 1 yr. | 33N516, 497A82 | VOC | 1 | €849.55 | |
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SR-W-MP75C | -40°C to +55°C | Combustible Gas | Catalytic | -40°F | 131°F | 2 yrs. | 23M777, 23M776, 23M792, 23M810, 35HY03, 35HY04, 35HY05, 35HY06, 35HY07, 35HY08, 35HY17, 35HY18, 48PH41, 48PH42, 48PH43, 48PH45, 48PH49, 48PH50, 48PH51, 48PH53 | LEL | 1 | €238.50 | |
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D4-RHM04 | - | Carbon Monoxide | Electrochemical | -4°F | 104°F | 1 yr. | 33N505 | - | 1 | €805.79 | |
![]() |
PS-RC10 | - | Chlorine | Electrochemical | -20°F | 122°F | 1 yr. | 497A81 | - | 1 | €736.35 | |
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SR-W04-75C | -4°F to +122°F | Combustible Gas | Catalytic | -4°F | 122°F | 1 yr. | - | LEL | 1 | €341.84 | |
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SR-X2V | -4°F to +122°F | Oxygen | Electrochemical | -4°F | 122°F | 2 yrs. | - | - | 1 | €312.37 | |
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SR-H04-SC | -4°F to +122°F | Hydrogen Sulfide | Electrochemical | -4°F | 122°F | 2 yrs. | 23M956, 23M980, 23M998, 23N027, 23N055, 5ZXF8, 5ZYY2, 5ZYY3, 5ZYY4, 5ZYY5 | - | 1 | €353.95 |
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Contact us
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We're available Monday through Friday, from 07:30 until 17:00.
BW TECHNOLOGIES SR-W04 Replacement Sensor Combustibles
€369.84 /unit


