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Product Features
- The menu system is intuitive and easy to use – enables configuration changes to be made easily
- All functions, from day-to-day operation to re-calibration, can be carried out from the front panel – routine testing can be performed rapidly
- Event log feature – enables system fault and alarm history to be viewed
Delivery options
At Cadmus Products we aim to deliver orders efficiently and at highly competitive rates.
- We can ship consignments of all shapes and sizes and hazardous content across the UK and worldwide. Most of our orders are sent via DHL, however sometimes we may use other couriers.
- If you are purchasing a laboratory product online you can find out the price of shipping checkout. If you are obtaining a quote for a product, then we will email you
with our best shipping prices along with your quote. - Please see our delivery page for full information
The Crowcon Gasmaster is a compact, versatile and powerful gas detection control panel that combines simple operation with an extensive array of input and output functions.
The 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. Gasmaster can operate ‘stand-alone’ or interface with any alarm devices and control systems using a selection of outputs.
Large display
Versatile input and output features
Modular design
The 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. 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 – enables full systems status check at a glance
- 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
Versatile input and output features
- Provides analogue, relay and Modbus outputs – facilitating communication around the site
- Flexibility – 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
- Two levels of independent alarm per channel – can be configured to suit site requirements
- Remote inhibit and re-set facilities – enables control from any point on your site
- Compatible with a 4-20mA or mV pellistor-type gas detector – 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
Specifications
| Gasmaster 1 | Gasmaster 4 | |
| Size | 288 x 278 x 110mm (11.3 x 10.9 x 4.3 inches) | |
| 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) | |
| 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 detectors | |
| ESU For use with one Crowcon ESU fan | ||
| Remote inhibit/retest Via normally open contact | ||
| Outputs | Relays DPCO contacts rated 250Vac 8A 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 700?) or 1-5Vdc (min. load 50k? ) | 4-20mA for each channel (current source, max. loop resistance 700?) or 1-5Vdc (min. load 50k?) | |
| 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) |
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| Approvals | EMC: EN50270, EN60945, FCC: CFR 47 Part 15; ICES – 003 ATEX: May be used in a non-hazardous area as part of Intrinsically Safe System conforming to EN60079-25 Baseefa 05Y0090/1 |
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| Functional safety | Validated to IEC61508 SIL2 |
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*Event log access requires a Gasmaster PC communications kit and communications port (see Accessories
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