Crowcon Gasmaster 1 Single Channel Unit with Accessory Enclosure Connector (required if an Accessory Enclosure is to be used) - C01931

C01931 Gasmaster 1 Single Channel Unit with Accessory Enclosure Connector (required if an Accessory Enclosure is to be used) by Crowcon

Crowcon Gasmaster is a compact but powerful control system that combines simple operation with an extensive array of input and output functions.

Crowcon Gasmaster provides all the information you need about your gas and fire detectors at a glance. The large multi-lingual display shows gas levels from all detectors simultaneously, and enables system adjustment and testing using buttons on the front panel.

Crowcon Gasmaster can operate 'stand-alone' or interface with any alarm devices and control systems using a selection of outputs.

Large display

All gas levels are displayed simultaneously
Alarm messages can be customised to indicate the name or location of any detector in alarm
The LCD can be set to display in many languages
Enables full systems status check at a glance

User friendly

Menu system is intuitive and easy to use
All functions, from day-to-day operation to re-calibration, can be carried out from the front panel
Event log feature
Enables configuration changes to be made easily
Routine testing can be performed rapidly
Enables system fault and alarm history to be viewed

Versatile input and output features

Provides analogue, relay and Modbus outputs
Flexibility
Two levels of independent alarm per channel
Remote inhibit and reset facilities
Compatible with 4-20mA or mV pellistor type gas detectors
Facilitating communication around the site
Gasmaster can monitor up to four detectors in virtually any combination of gas detectors, fire zones or Environmental Sampling Unit
Software enables re-configuration and event log upload in an instant
Can be configured to suit site requirements
Enables control from any point on your site
mV pellistor detectors reduce system purchase and maintenance costs

Modular design

You only need to purchase the required number of input modules
1, 2 and 3 channel systems can be extended later by adding additional modules

		Gasmaster 1	Gasmaster 4
Size		288 x 278 x 110mm (11.3 x 10.9 x 4.3 ins)
Weight		4.5kg (10lbs)
Enclosure material		Back-box: cast aluminium Front cover: ABS (flame retardant)
Ingress protection		IP65
Power		100-240Vac 50-60Hz or 20-30Vdc, 60W max
Battery back-up		1.2Ah batteries fitted internally
Operating temperature		-10°C to + 50°C (14°F to 122°F)
Humidity		0 to 95% RH non-condensing
Inputs	Gas	One 2 or 3 wire 4-20mA gas detector (sink or source) or mV pellistor flammable gas detector	One to four 2 or 3 wire 4-20mA gas detectors (sink or source) or mV pellistor flammable gas detectors
	Fire	One loop of up to 20 conventional smoke/heat detectors or manual call points, or one flame detector (4-20mA or digital contact signal)	One to four loops of up to 20 conventional smoke/heat detectors or manual call points, or one to four flame etectors
	Environmental Sampling Unit	For use with one Crowcon ESU fan	For use with one to four Crowcon ESU fans
	Remote inhibit	Via normally open contact
	Remote reset	Via normally open contact
Outputs	Relays DPCO contacts rated 250Vac 8A. Relays can be set as energised or de-energised, latching or non-latchng, latching acceptable	Low alarm. High alarm. Fault. Alarm relays can be set for rising or falling alarms. Hysteresis can be adjusted on low alarms	Low alarm and high alarm per channel plus common low, high and fault. Alarm relays can be set for rising or falling alarms. Hysteresis can be adjusted on low alarms
	A/V alarm drive	12Vdc or 24Vdc 650mA max. drive. Suitable for +ve or -ve switched alarms
	Analogue	4-20mA (current source, max. loop resistance 700Ω) or 1-5Vdc (min. load 50kΩ )	4-20mA for each channel (current source, max. loop resistance 700Ω) or 1-5Vdc (min. load 50kΩ)
	Serial link	RS-485 Modbus RTU for monitoring and control via DCS/SCADA/PLC systems
Communications port		Optional port for PC configuration and event log upload
Event logging		Time-stamped log of up to 300 alarms, fault or system intervention activities
Panel indication		LCD back-lit display shows gas level (in ppb, ppm, % volume or % LEL units), and scrolling alpha-numeric status indication. LED’s for Alarm, Fault, Power and Warning. Integral 85dB sounder (at 10cm)
Approvals		EMC: EN50270, EN60945, FCC Part 15, ICES002 ATEX: EN60079-25:2010
Functional safety		Validated to IEC61508 SIL2