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
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
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