The 4 Channel Gas Monitor is a wall-mounted, microprocessor-controlled gas detection system that monitors up to 4 channels for toxic, combustible, and oxygen gases. It has individual alarm relays, 4-20mA outputs, RS485 communications, and is user-programmable for alarm settings and sensor configuration. It provides an effective yet cost-efficient gas monitoring solution.

1. Monicon 4 Channel
4 Channel Gas Detector
The 4 Channel Gas Monitor is an innovative, cost
effective, wall mounted unit.
• Individual voltage free relay contacts
• Advanced digital readout
• User programmable
• Low power consumption
• Built-in battery backup circuit
• Alarm inhibit during calibration
• Individual 4-20mA analogue outputs
• Sealed to IP65 rating
• RS485 communications interface
• Remote reset and accept terminals
Digital Signal Processing
The 4 Channel Gas is also compatible with a wide range of third party
4-20mA transmitters including temperature probes. Monicon have
pioneered a novel approach to significantly reduce false alarms by
processing the sensor signal through an advanced analysis program in the
microprocessor.
User Customisation for Alarm Settings
Simple to use and microprocessor controlled, the 4 Channel Gas Monitor
is menu assisted and fully user programmable for alarm setpoints, relay
options, range, sensor type, gas type and many other parameters in a user
friendly manner offering unique flexibility and control over the system
Project Driven, Bespoke Solutions
Using our expert engineering knowledge, the a1-cbiss project team
produce the design, specify equipment and integrate the system before
it’s delivered to site by our service and maintenance team
“
It offers a robust, easy to use, cost
effective approach to providing
an effective gas detection system
where safety matters
“
KEYBENEFITS
It is designed to operate in conjunction with the T100 toxic gas detector
and the highly successful CGS500 combustible gas sensor to monitor a
range of toxic gases, combustible gases and oxygen in a wide range of
applications

2. TECHNICALSPECIFICATION
200mm (vert) 288mm (horz)
POWER
• Supply voltage: 230Vac (115Vac optional)
• Power consumption: 6W
• Battery fuse: 1.5A PCB mounted, auto reset, PTC fuse
• Relay contacts: SPDT, 250V, 3A each for A1, A2, Common
GENERAL
• 4 channel gas detector
• Works with T100 & CGS500 to detect toxic, combustible
and oxygen gases
A3 & FAULT (10 relays)
• Automatic self-test capabilities
• Analogue outputs: 4-20mA into maximum 250 Ω for each
channel
PERFORMANCE
• Ec-cell operating life in air at S.T.P: Typically 2 years
• Preconditioning Requirements: 1 Hour (24 hours for HCl,
• RS485 operating mode: Slave mode, half duplex, polled
SENSOR TYPE
• Combustible gas sensor type: Monicon CGS500 or
C2H4O, & NO)
• Storage life at 0 to 20°C: 6 months
• Drift, S.T.P. continuous duty in air: <2% Full Scale per
compatible third-party sensor
• Toxic gas sensor type: Monicon T100, or compatible
month
4-20mA transmitter
• Max. units on RS485 loop: 25 controllers (100 channels)
• RS485 communications parameters: 1200-N-8-1
• Unit interrogation time: 40mS
ALARMS
• Alarm setting: Digital setting (fully adjustable between
10% and 90% of full scale)
• Alarm types: Energised/de-energised. Enrichment /
OPERATING RANGES
• Operating temperature range: -18˚C to +66˚C
• Storage temperature: -40˚C to +66˚C
• Humidity range: 10%RH to 90%RH (Non-condensing)
deficiency. User selectable
• Resolution: 1%
• Accuracy: 5%
• Full scale range: 1.00 to 5000 (user selectable)
PHYSICAL
• Dimensions: 230 (H) x 300 (W) x 110 (D) mm
• Weight: 3.5kg
• Housing: Two-piece, hinged, ABS or polycarbonate with
neoprene gasket
• Mounting holes: 4 holes, Ø4.2mm, spaced at
CERTIFICATIONS
• Electromagnetic Conformance (EMC): Complies with
EN50081 and EN50082
• IP65 Rating
11 Ark Royal Way, Lairdside Technology Park, Tranmere, Wirral, CH41 9HT
T: +44(0)151 666 8300 F: +44(0)151 666 8329 E: sales@a1-cbiss.com
W: www.a1-cbiss.com Buy Online: shop.a1-cbiss.com
Cert No. 996
ISO 9001