B-Guard Ir CO2
GasTech Australia Blind Guard series B-GuardTM Series GHD CO2 detector is a single source dual wavelength instrument. The sensing and reference elements are self-compensating for optical integrity and other signal inhibitors. The industry standard 4 -20 mA analog output provides remote alarm, fault and calibration signals.
KEY FEATURES
- Continuous detection of CO2 gas in explosion hazardous area with flame proof structure
- State of art Infra red detection principle
- Long service life (more than 5 years)
- Low operation cost due to maintenance free
- Operation at no oxygen environment
- Self diagnosis function with built-in Microprocessor
- Rapid response time (with 10 secs)
- 4-20mA DC output signal
- Easy configuration of monitoring system with RS-485 Modbus(isolated) Serial communication function
APPLICATIONS
- Refineries
- Gas turbines
- Drilling and production platforms
- Chemical plants
- Fuel loading facilities
- Compressor stations
- Oil well logging
- Wastewater treatment facilities
- LNG/LPG processing and
- storage facilities
- Transportation facilities
SPECIFICATIONS
| Model |
B-Guard GHD(Hydrocarbon) |
| Measuring gas | CO2 gas (Carbon Dioxide) |
| Measuring type | Diffusion type |
| Sensor type | Infrared type |
| Measuring range | 0-5% Vol 0-2% Vol |
| Sensor life time | More than 5 years |
| Response time | <10 sec / 90% scale |
| Accuracy | ±3% / Full scale |
| Parameter controls | Non intrusive control with Magnet bar (calibration, maintenance, alarm setting) |
| Operation mode display | 4-LED (Power, 2-Alarm, 1-Trouble) |
| Measuring value display | LCD display (Built-in Back light 2-Line, 16 characters) |
| Alarm signal output | 250V 1A / 3-SPST Relay contact (2-Alarm, 1-Trouble) |
| Output signal | |
| Analog output : Measuring signal | 4-20 mA DC |
| Maintenance signal |
3 mA DC |
| Calibration signal | 2 mA DC |
| Fault signal | 0 mA DC |
| Digital output | RS-485 MODBUS (Option) |
| Cable / Distance | Power + signal cable: 3 wire (above CVVS 1.5sq) / 500m max. |
| RS-485 data communication cable |
1par (UL2919 RS-485) / 1,000m max. |
| Conduit pipe | 1/2" & 3/4" PF, NPT (3/4" PF standard) |
| Mounting type |
2" Pole mount, Wall mount, Duct mount |
| Operating temperature | -20℃ ~ +50℃ |
| Operating humidity | 5 ~ 99%.RH (non-condensing) |
| Operating power | 18 ~ 31V DC (24V DC normal) / 300mA max. |
| Dimensions | 301.5 x 152 x 109 (W X H X D) |
| Weight | 2.5kg |
| Approval | Flame proof structure (Ex d IIC T6),ATEX, IECEx |
ORDERING INFORMATION
- 67-9092 -CO2 : B-Guard IR Smart Transmitter, 4-20mA, 0-5% VOL IECex
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