DA-800 detects various combustible & toxic gases leaked from industrial areas for gas producers, gas users, gas reservoirs, gas by-producers, and so on, in order to prevent any accidents in advance. Built-in micro pump for gas sampling enables effective gas detection especially for the environment where diffusion type gas detectors cannot be used. DA-800 converts digital signal into the 4-20mA standard current output signal which can be transmitted to various devices such as PLC, DDC, or recorder to build comprehensive gas monitoring system. Also, DA-800 provides RS-485 communication signal and alarm relay contact. DC 4-20mA standard output signal realizes max 2500m long distance output signal transmission and RS-485 communication signal realizes max 1000m long distance signal transmission.
[ Features ]
ㆍ LCD display with Back Light
ㆍ Built-in HD(high dissolution) A/D converter for accurate output signal.
ㆍ Multi Signal Output
DC 4-20mA, 2 step-relay contact, & RS-485(option) provides best networking with all kinds of devices & equipments.
ㆍ 4-20mA Transmitter
4-20mA output enables stable and long distance (maximum 2.5km) signal transmission.
ㆍ RS-485
RS-485 enables stables stable and long distance (maximum 1.2km) signal communication.
ㆍ Alarm output
SPST 2 step relay contacts (AL1/AL2).
[ Specification ]
| Gas sampling | Suction type |
| Density display and unit | Built-in LCD Display - PPM, %LEL, or % set by user |
| Input power | DC 18-30V |
| Explosion proof | Ex d IIB+H2 |
| Target gas | Please refer to the list. |
| Detection principle | Catalytic, Electro-Chemical, or NDIR |
| Suction flow rate | 0 ~ 1000ml / min |
| Suction distance | Within 100m |
| Measurement range | Please refer to the list |
| Accuracy | ≤2% /full scale |
| Response time | within 20 seconds, 90%/full scale |
| Sensor calibration | Auto calibration with magnetic switch |
| User programming | Calibration density & Measurement range |
| Wiring | CVVS & CVVSB 1.25sq*3wire |
| Output signal | 4-20mA DC/F.S // RS-485(MODBUS-RTU) |
| Alarm output | 2 step (HIGH/LOW) alarm relay contact |
| Operation temperature | -10℃ ~ 50℃ |
| Operation humidity | 5 ~ 95%RH (non-condensing) |
| Wire conduit | 1/2” or 3/4” PF, NPT |
| Housing material | Cast Aluminum Alloy |
| Mounting | Wall or pipe mounting |
