The Wintact WT8807 carbon dioxide monitor measures CO2 from 0 to 10000 μmol/mol (ppm) with 1 ppm resolution on a color LCD. It gives sound and light alarms at user-set upper and lower limits, records 7605 readings, runs on a rechargeable 1800 mAh battery and is marked Ex ib IIB T3 Gb.
The Wintact WT8807 is a carbon dioxide monitor built around a high-quality gas sensor for stable, repeatable CO2 measurement over 0–10000 μmol/mol (ppm) with 1 ppm resolution. Accuracy is ±40 μmol/mol ±3 % for readings within 400–2000 μmol/mol (specified at 25 °C and 101.3 kPa), and the 90 % response time is about 2 minutes.
The color LCD shows the real-time concentration together with the maximum, minimum and average values and the active alarm limits. When the concentration exceeds the user-set lower or upper alarm value, the monitor warns with sound and flashing light, with a faster, more urgent alarm at the high level. Up to 15 groups of 507 readings (7605 in total) can be recorded and reviewed on the instrument as a distribution chart and trend graph.
The housing combines high-strength engineering plastic with non-slip rubber, is dust- and explosion-proof and carries the Ex ib IIB T3 Gb marking, with an alligator clip on the back. Power comes from a rechargeable 3.7 V, 1800 mAh lithium battery charged over USB in about 4 hours.
| Manufacturer | Wintact |
|---|---|
| Model | WT8807 |
| Gas detected | CO2 (carbon dioxide) |
| Measuring range | 0–10000 μmol/mol (1 μmol/mol = 1 ppm) |
| Resolution | 1 μmol/mol |
| Accuracy | ±40 μmol/mol ±3 % for readings within 400–2000 μmol/mol; larger outside this range |
| Accuracy reference conditions | 25 °C, 101.3 kPa |
| Response time (90 %) | About 2 minutes |
| Sensor stabilization after power-on | About 20 seconds |
| Indication mode | LCD shows real-time data and system state; LED and sound alarm |
| Data memory | 7605 readings (15 groups × 507) |
| Menu languages | Chinese / English |
| Explosion-proof marking | Ex ib IIB T3 Gb |
| Compliance | CE |
| Operating conditions | 0–50 °C, <85 %RH non-condensing |
| Storage conditions | -10–55 °C, <85 %RH non-condensing |
| Working voltage | DC 3.7 V (lithium battery, 1800 mAh) |
| Battery model | LP103450-1800mAh |
| Charging | USB; charging time about 4 hours |
| Standby time | More than 8 h continuous (varies slightly with working state) |
| Dimensions | 71 × 153 × 49 mm |
| Weight | 215.4 g (with battery and back button) |
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