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  美国PemTech公司提供世界级品质的用于检测有毒易燃气体的传感器、监视器和分析仪等。PemTech确保每件产品的质量,客户可直接与应用工程师及销售团队开发的气体探测解决方案提出具体要求,从而完全满足全球客户的需求。

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PT395 Series 可燃气体传感器

2009/10/21 14:44:44 阅读:438次

  • 产品系列名称:PT395 Series 可燃气体传感器
  • 产品定货号:MR-00201-00
  • 产地:美国
  • 品牌:pemtech
  • 推荐:
Features
Microprocessor based modular design
Electrochemical Sensor Technology
Industry standard 4-20mA output
Field adjustable Alarm level
Single point Non-Intrusive calibration
Bright 3 digit LED display
Displays gas concentration in %LEL, calibration prompts and sensor fault codes
Class I, Div 1, Suitable for use in Hazardous Location
Description
Model PT395-LEL is a microprocessor-based sensor designed to combustible hydrocarbons in % volume level. The unit features easy one-man calibration initiated by simply activating a magnetic switch and applying the gas.
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 unit provides a 4-20mA signal proportional to 0 to 100% of the detection range of the sensor and three (3) fully programmable alarm relays.
The sensor transmitter board includes a three (3) digit LED display for continuous indication of the gas concentration. The calibration mode, alarm and fault status of the sensor are also indicated on the digital display. In the normal operating mode the digital display and 4-20mA reading is proportional to the gas concentration detected by the sensor. In the calibration mode the digital display indicates the calibration status, alarm relay outputs are inhibited and analog signal output is set to 2 mA to avoid any false alarm by the control monitor. In the sensor fault mode the transmitter drops the output signal to < 1 mA.
Specifications
Sensor Type
Continuous diffusion Catalytic Bead
Measuring Range
0 to 100 % LEL
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: 4.5 inches (114 mm)
Display
Bright 3 digit LED display
Status Indicators
Amber and Red alarm LED indicators
for Low,  High and Fault Alarms.
Approvals
ATEX / CSA  for use in Hazardous area.  
CSA  Performance test:  ISA-S12.13-
Part I-1995
Input Power
14-28 VDC. 24 VDC nominal
Power Consumption
165mA @ 24 VDC typical
Alarm Relays
3 Alarm Relays, Low, High and Fault
Fully  programmable. 0 to Full scale
range of the sensor. Latching or Non-
Latching.
Relay RatingsS
PDT  Form “C” type Relay contacts
0.5 Amp @ 125 VAC or
2 Amps @  30 VDC
Analog Output
Linear 4-20mA (300 Ohms max. load)
2.0 mA - Calibration mode
< 1.0 mA - Sensor malfunction
Calibration
Non-Intrusive activated
by internal magnetic switch
Cable Requirement
3 wire shielded cable. Max loop
resistance 20 Ohms
Cable Entry Hub
Features
Microprocessor based modular design
Electrochemical Sensor Technology
Industry standard 4-20mA output
Field adjustable Alarm level
Single point Non-Intrusive calibration
Bright 3 digit LED display
Displays gas concentration in %LEL, calibration prompts and sensor fault codes
Class I, Div 1, Suitable for use in Hazardous Location
Description
Model PT395-LEL is a microprocessor-based sensor designed to combustible hydrocarbons in % volume level. The unit features easy one-man calibration initiated by simply activating a magnetic switch and applying the gas.
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 unit provides a 4-20mA signal proportional to 0 to 100% of the detection range of the sensor and three (3) fully programmable alarm relays.
The sensor transmitter board includes a three (3) digit LED display for continuous indication of the gas concentration. The calibration mode, alarm and fault status of the sensor are also indicated on the digital display. In the normal operating mode the digital display and 4-20mA reading is proportional to the gas concentration detected by the sensor. In the calibration mode the digital display indicates the calibration status, alarm relay outputs are inhibited and analog signal output is set to 2 mA to avoid any false alarm by the control monitor. In the sensor fault mode the transmitter drops the output signal to < 1 mA.
Specifications
Sensor Type
Continuous diffusion Catalytic Bead
Measuring Range
0 to 100 % LEL
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: 4.5 inches (114 mm)
Display
Bright 3 digit LED display
Status Indicators
Amber and Red alarm LED indicators
for Low,  High and Fault Alarms.
Approvals
ATEX / CSA  for use in Hazardous area.  
CSA  Performance test:  ISA-S12.13-
Part I-1995
Input Power
14-28 VDC. 24 VDC nominal
Power Consumption
165mA @ 24 VDC typical
Alarm Relays
3 Alarm Relays, Low, High and Fault
Fully  programmable. 0 to Full scale
range of the sensor. Latching or Non-
Latching.
Relay RatingsS
PDT  Form “C” type Relay contacts
0.5 Amp @ 125 VAC or
2 Amps @  30 VDC
Analog Output
Linear 4-20mA (300 Ohms max. load)
2.0 mA - Calibration mode
< 1.0 mA - Sensor malfunction
Calibration
Non-Intrusive activated
by internal magnetic switch
Cable Requirement
3 wire shielded cable. Max loop
resistance 20 Ohms
Cable Entry Hub
 

产品编号 产品名称 产品简介 产品价格
MR-00201-00 PT395 Series Combustible Gas Sensor 0¥

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