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PT205 Series Combustible Gas Sensor
Features
- Microprocessor based modular design
- Industry standard 4-20mA output
- LED Status Indicator
- 12-24 VDC Power input
- Reverse polarity protection
- Class I, Div 1, Suitable for use in Hazardous Location
- Simple Calibration
Description
Model PT205 sensor is designed to detect combustible hydrocarbons vapors in air and provides an analog output signal. PT205 uses catalytic beads sensor to detect combustible vapors in % LEL.
The complete sensor consists of a stainless steel sensor head assembly, a user connection board and a transmitter board assembly. All of the sensor electronics are enclosed in an explosion proof instrument box. The unit’s modular design allows easy maintenance, troubleshooting and high reliability. The low power microprocessor based sensor transmitter provides a 4-20mA analog signal proportional to 0 – 100% of the detection range of the sensor. Also an LED indicator on the transmitter board provides sensor status and fault condition.
Specifications
- Sensor Type
- Continuous diffusion Catalytic Bead
- Measuring Range
- 0 to 100 % LEL
- Accuracy
- ± 2 % LEL
- Zero Drift
- < 5% of Full Scale per year
- Response Time
- T50 < 10 seconds
- T90 < 30 seconds with 100% LEL methane gas applied
- Classification
- Class I, division 1, Groups B,C & D
- Operating Temperature
- -40°F to +158°F (-40°C to +70°C)
- Operating Humidity
- 10% to 90% RH, non-condensing
- Mechanical Specifications
- Length: 7 inches (178 mm)
- Width: 5 inches (127 mm)
- Height: 4 inches (101 mm)
- Status Indicators
- LED indicator of sensor status and Fault condition.
- Approvals
- Certified to CSA requirement of use in Hazardous area. Performance test: ISA-S12.13-Part I-1995
- Input Power
- 14-28 VDC. 24 VDC nominal
- Power Consumption
- 110mA @ 24 VDC typical
- Analog Output
- Linear 4-20mA (300 Ohms max. load)
- < 1.0 mA - Sensor malfunction
- Cable Requirement
- 3 wire shielded cable. Max loop resistance of
- 20 Ohms @ 24 VDC nominal
- Cable Entry Hub
- ¾” NPT Female
Other Toxic Gas sensors available. Call factory or visit www.pem-tech.com