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420 MCD GAS DETECTION SYSTEM CONTROLLER


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The 420 MCD Multiple Channel Detection controllers are advanced "Early Warning" microprocessor based electronics to monitor a wide range of gases.

SenTech's 420 MCD Controllers are cost effective, self-contained systems offering highly reliable performance with the flexibility to satisfy a wide range of continuous monitoring applications. The 420 MCD features multi-zone detection point capability from a single field-programmable self-contained metal enclosure to power and monitor a variety of 24 Vdc, 4-20mA oxygen, and toxic or combustible gas sensor/transmitters.


SenTech's 420 MCD Controllers utilize sensors with long-term stability, excellent selectivity, and multi-zone detection point capability from a single field-programmable self-contained metal enclosure, The 420 MCD multiple channel architecture is available in two, four, and eight sixteen channels, each channel capable of monitoring specific gases via remote transmitters a unique configuration that allows the 420 MCD to be set up as a Multi-Gas monitor for a wide range of gases along with a unique built-in leak wait period feature that minimizes nuisance false alarms.

Sensor/transmitters are available for a wide range of toxic and combustible gas sensor / transmitters. A partial list follows:

O2,H2S,CO,Cl2,HCN,H2,NO2,HCl,SO2,ETO,

O3,F2,NH3,HF,ClO2,AsH3,PH3,SiH4.

Features

  • Multiple channels (2,4,8, zones)
  • Multiple channel architecture allows combined multiple gas detection configurations
  • Four line digital w/keypad for programming and operation
  • Three alarm levels (Four 5 amp contacts per relay)
  • Visual and audio indication of alarm level and system malfunction
  • Separate programmable horn alarm relay
  • 0-10 vdc analog output
  • Optional Nema 4 enclosure with keypad lock
  • Optional individual zone alarm output to indicate alarm in each zone
  • Optional four channel analog input for multiple channel detection operation
  • Optional serial data output (RS 485 or RS 232)
  • Optional remote control interface

Options/Accessories

  • Calibration gas kit

Specifications

Sensitivity
(Sensor Specific)

Weight
32 lbs, (14.4 Kgs)

Power Requirements
120/240 Volt 50/60 Hz

Range
(Sensor Specific)

Alarm Trip Points
Low Alarm 0 to 100% of Full Scale
Main Alarm 0 to 100% of Full Scale
High Alarm 0 to 100% of Full Scale

Operating Environmental Range
32o - 125o Fahrenheit
0o - 50o Celsius

Alarm Outputs
Indicator Light
Alarm Relays with 4 Form C contacts
(5 amps maximum)
RS 485 or RS 232 interface

 
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