Transcript
Sensor Selection
CXT
by Application Type The CXT transmitter is useful in a variety of industries. Below is a list of common applications and gases that are detected: Common Gas Detected
Battery Recharging Area
Combustibles, H2
Boiler Room
CO, combustibles
Breweries
NH3, CO2, CO
Chiller Rooms
NH3
Deep Freezer
NH3
Ice Cleaning Machine Rm
CO2, CO, combustibles, NO2
Loading Bays
CO, combustibles, NO2
Maintenance Facilities
CO, combustibles, H2, NO2, SO2
Manufacturing Plants
CO, combustibles, NO2, SO2
Parking Garages
CO, combustibles, NO2
Pump Stations
CO, combustibles, H2S, O2, SO2
Repair Shops
CO, combustibles, H2, NO2, SO2
Warehouses
CO, combustibles, NO2, SO2
Wineries
NH3, CO2, CO
Critical Environment Technologies Canada Inc. Unit 145, 7391 Vantage Way, Delta, BC, V4G 1M3, Canada Toll Free: +1.877.940.8741 Tel: +1.604.940.8741 Fax: +1.604.940.8745
www.critical-environment.com
Note: For applications not listed above, please contact your representative.
Explosion Proof Transmitter
Application
Peace of mind. Guaranteed. Continuous monitoring of hazardous gas leaks in various applications.
© 2013 Critical Environment Technologies Canada Inc. All rights reserved. Data in this publication may change without notice.
www.critical-environment.com
CXT EXPLOSION PROOF TRANSMITTER SERIES
Datasheet
CXT explosion proof standalone transmitters are designed to operate in extreme temperature conditions found in blast chillers and deep freezers. CXT’s unique design includes programmable heaters for both the sensor and electronics that are automatically activated when temperatures drop below user selectable temperatures. Placing the sensors inside these harsh operating environments allow for quick detection and response to the smallest leaks, protecting human life as well as product and machinery. CXT has a large LCD display that shows gas concentrations and engineering units, as well as the flexibility to show historical data for the previous 30 minutes. Utilizing the graphic display, users can navigate through its menu driven magnetic keypad to change alarm set points, instrument configurations, or enter into maintenance mode for non-intrusive sensor calibration. For security, the CXT’s security menu allows entry of an authorization code to lock critical parameters. Accompanying the LCD display are standard LED alarm indicators that show when low and high alarm conditions are met. An optional relay board is available to provide three, 5-amp relays that can be used to drive audible/visual alarms, or activate exhaust fans.
KEY FEATURES » Heated sensors and electronics for low temperature operation » Graphic LCD for real time monitoring » 4 - 20 mA or Modbus® RTU Interface » 30 minute onboard data trend » Optional relay outputs » CSA & ATEX certified
technical specifications
technical drawing
GAS TYPE Ammonia (NH3) Carbon Dioxide (CO2) Carbon Monoxide (CO) Ethylene (C2H4) Hydrogen (H2) Hydrogen Sulphide (H2S) Methane (CH4) Nitrogen Dioxide (NO2) Oxygen (O2) Pentane (C5H12) Phosphine (PH3) Propene (C3H6) Sulphur Dioxide (SO2)
product codes
CXT -
MECHANICAL Enclosure Weight Size ELECTRICAL Power Requirement Communications Power Safety Mode INPUT / OUTPUT Outputs Alarm Relay
Durable aluminum suitable for Class 1, Division 1 & 2, Groups B, C, D tbd 8.0” x 5.5” x 4.6” (203 mm x 140 mm x 117 mm)
10 - 30 VDC, 250 mA @ 24 VDC RS485, Modbus® Fully automatic system reset - all programmed parameters retained
4 - 20 mA or Modbus® RTU Interface Three SPDT dry contact relays, rated 5 amps @ 30 VDC or 240 VAC resistive
Single Channel Sensor: Electrochemical NH NH3 sensor (0 - 500 ppm) CO CO sensor (0 - 1,000 ppm) H2 H2 sensor (0 - 1,000 ppm) HS H2S sensor (0 - 500 ppm) NO NO2 sensor (0 - 100 ppm) O2 O2 sensor (0 - 30% volume) PH PH3 sensor (0 - 10 ppm) SO SO2 sensor (0 - 100 ppm)
IC IM IP
Infrared CO2 sensor (0 - 5% volume) CH4 sensor (0 - 100% LEL) C3H6 sensor (0 - 100% LEL)
C4 C2 CM C5
Catalytic C2H4 sensor (0 - 100% LEL) H2 sensor (0 - 100% LEL) CH4 sensor (0 - 100% LEL) C5H12 sensor (0 - 100% LEL)
USER INTERFACE Display Front Panel
LCD graphic display for gas readings, 30 minute trend, bar graphing, engineering units, and backlight. 64 x 128 pixel. Five indicator lights: AL1, AL2, Fail, In Cal and RS485
ENVIRONMENTAL (sensor dependant) Operating Temperature -55°C to 60°C (-67°F to 140°F) Humidity 5 - 90% RH non-condensing CERTIFICATION CSA Certified ATEX Certified
Class 1, Division 1 & 2, Groups B, C, D CE Mark, EExd IIB + H2, T5
Output: A 4 - 20 mA Analog Output D Modbus® Digital Output Option: None SG Splash Guard
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