Remote measurement of under-explosive concentrations of combustible gases and vapors of petroleum products.
Specifications
| Detectable components | propane, methane, butane, hexane | ||
|---|---|---|---|
| Verification gases | propane, methane | ||
| Measurement range, % of LEL | from 0 to 100 | ||
| Sampling method | diffusive | ||
| Principle of measurement | infrared absorption | ||
| Interval between verifications, months | 24 | ||
| Indications setting time (T90), s, not more than | 60 | ||
| Heating time, s, not more than | 120 | ||
| Acceptable power supply voltage (DC), V | from 5 to 36 | ||
| Power consumption, W, not more than | 1.2 | ||
| Interfaces (protocols) | power and signal line SENS (SENS protocol), RS-485 (protocols SENS, Modbus RTU) | ||
| Number of configurable thresholds of alarm signaling | 5 | ||
| Diameter of connectible cable without armor, mm | from 5 to 18 | ||
| Main absolute inaccuracy within range from 0 to 60% level measurement of LEL, % LEL, not more than | ±3 | ||
| Main relative inaccuracy of measurement withing range from 60 to 100% LFL, %, not more than | ±5 | ||
| Ambient temperature range, ℃ | from -40 to +60 | ||
| Protection degree as per GOST 14254 | IP66 | ||
| Explosion-proof marking | 1 Ex d IIB T4 Gb X | ||
| Overall dimensions W x H x D, mm, not more than | 60 × 161 × 70 | ||
| Mass, kg, not more | 1.5 (with cable length of 3 m) | ||
| Service life, years | 15 | ||
| Mean time between failures, hours, not less than | 25000 | ||