Overview
Enviro Test Construct methane gas detector Fixed methane gas detector is suitable for continuous on-line detection of methane concentration in various industrial environments and special environments. The instrument adopts imported sensors and microcontroller technology, and has the advantages of stable signal, high precision, good repeatability, etc, explosion-proof wiring mode is suitable for all kinds of dangerous places. Widely used in the petrochemical industry, industrial production, smelting and forging, electric power, coal mine, tunnel engineering, environmental monitoring, sewage treatment, bio-pharmacy, home environmental protection, animal husbandry, greenhouse cultivation, warehousing and logistics, brewing and fermentation, agricultural production, firefighting, gas, building construction, civic enterprise, school laboratory, scientific research center, and other industries.
Features
- Adopt World imported high precision sensors and micro control
- The instrument has: 4 mA to 20mA or RS485 signal output, relay output
- The instrument is compatible with various control alarms, PLC, DCS, etc
- The gas concentration in the environment or pipeline can be continuously monitored
- Large screen multi-parameter LCD with backlight on-site to visually display gas etc.
- Independent air chamber, no need to replace the sensor field proving
- Full range temperature digital automatic tracking compensation
- Full software calibration ensures more reliable measurement accuracy and linearity
Technical Specifications
| Detection gas | Methane T4 |
| Detection principle | infrared detection principle |
| Installation method | Wall mounted, pipe type (thread size: M45 x 0.0591 in (1.5 mm), flow type, pump suction type optional |
| Measurement range | 0 ppm to 2000 ppm, 5000 ppm, 10000 ppm, 50000 PPM, 0% to 20%, 50%, 100% VOL, 0% LEL to 100% LEL optional |
| Resolution rate | 1 PPM, 0.01% VOL, 0.1% LEL optional |
| Precision | ≤ ± 1%, ≤ ± 2%, ≤ ± 3% FS optional (actual concentration) |
| Repetition | ≤ ± 1% |
| Zero drift | ≤ ± 1% (FS per year) |
| Response time | ≤ 20 seconds (T90) |
| Recovery time | ≤ 20 seconds |
| Output signal | According to the actual requirements, users can transmit up to 6561.68 feet (2000 meters) (single core 1 mm² shielded cable)Two wire 4 mA to 20 mA current signal output (three wire system optional)RS 485 digital signal output, with an RS 232 adapter card, can store data on the computer (optional) |
| 2 sets of relay output | one set of active DC24V output and one set of passive signal output |
| Alarm signal output | On site sound and light alarm, alarm sound< 90 dB (optional) |
| Connection method | Diffusion type, optional pump suction type, long-term continuous work |
| Shell material | Die-cast aluminium, electroplated insulating paint |
| Explosion-proof mark | ExdII CT6 |
| Protection level | IP66 |
| Working power supply | 24 V DC (12 V DC to 30 V DC) |
| Working humidity | ≤ 95 % RH, no condensation (humidity > 90% RH, can be equipped with filter) |
| Working pressure | ≤ 200 Kpa |
| Operating temperature | -4 °F to 122 °F (-20 ℃ to 50 ℃) (special requirements are customized as needed) |
| Size | 7.28 in × 5.70 in × 3.54 in (185 mm × 145 mm × 90 mm) |
| Weight | 3.30 lb (1.5 kg) |
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