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 > Product > Gas Detector > DA-800 Series (explosion proof)
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| DA-800 Series (explosion proof) |
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| SMART Gas Detector/Transmitter(4~20mA)with built-in LCD & explosion proof, Suction Type
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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.
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| [ Features ] |
 LCD display with Back Light
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| Built-in HD(high dissolution) A/D converter for accurate output signal.
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| Multi Signal Output
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| DC 4-20mA, 2 step-relay contact, & RS-485(option) provides best networking with all kinds of devices & equipments.
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| 4-20mA Transmitter |
| 4-20mA output enables stable and long distance (maximum 2.5km) signal transmission. |
| RS-485 |
| RS-485 enables stables stable and long distance (maximum 1.2km) signal communication. |
| Alarm output |
| SPST 2 step relay contacts (AL1/AL2). |
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| [ Specification
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| 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 |
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