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PT295 Series 有毒/氧气气体传感器
PT295 Series 有毒/氧气气体传感器
订货号: MM-40332-00
产地: 美国
品牌:
开发编号: N
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*此产品根据配置不同价格不同
*此价格为参考价格,具体价格以订单合同为准
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产品描述:

 
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 ppm, calibration prompts and sensor fault codes
Class I, Div 1, Suitable for use in Hazardous Location
Description
Model PT295 is a microprocessor-based sensor for toxic gas detection in parts per million (ppm) 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 fully programmable alarm relay and a linear 4-20mA signal proportinoal to 0 to 100% of the detection range of the sensor.
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 output is 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
Electrochemical
Measuring Ranges
 

Ammonia (NH3)
50 ppm
Carbon Monoxide (CO)
100 & 1000 ppm
Chlorine (CL2)
10 ppm
Chlorine Dioxide (CLO2)
50 ppm
Ethylene (C2H4)
100 pm
Ethylene Oxide (C2H4O)
50 ppm
Hydrogen Chloride (HCL)
20 ppm
Hydrogen Sulfide (H2S)
100 ppm
Hydrogen (H2)
100 & 1000 ppm
Hydrogen Cyanide (HCN)
30 ppm
Methyl Mercaptan (CH3SH)
100 ppm
Nitrogen Dioxide (NO2)
20 ppm
Nitric Oxide (NO)
100 ppm
Oxygen Deficiency (O2)
25%
Sulfur Dioxide (SO2)
50 ppm

Repeatability
± 2 % Full scale
Zero Drift
< 5% per year
Response Time
T90 < 30 seconds with 100% FS gas applied
Classification
Class I, division 1, Groups B, C & D
Operating Temperature
-4°F to +158°F (-20°C to +70°C)
Operating Humidity
15% to 90% RH, non-condensing
Approval
CSA / ATEX for use in Hazardous Locations
Status Indicators
Three-digit display for gas concentration, Alarm relay status, calibration mode and sensor fault status.
Mechanical Specifications
Length: 7 inches (178 mm)
Width: 5 inches (127 mm)
Height: 4.5 inches (114 mm)
Input Power
14-28 VDC. 24 VDC nominal
Power Consumption
50mA @ 24 VDC nominal
Alarm Relays
Fully programmable. 0 to Full scale range of the sensor. Latching or Non-Latching.
Relay Ratings
SPDT Form “C” type Relay contacts
5 Amps @ 250 VAC or 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 conductor shield cable.
 


品牌简介

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…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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