Crowcon Gasmaster - Appendix A: Specifications

Appendix A: Specifications Crowcon Gasmaster
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Appendix A: Specifications
Size
Weight
Enclosure material
Ingress protection
Power
Battery back-up
Operating temperature
Humidity
Input: Gas
Fire
Environmental
Sampling Unit control
Remote inhibit
Remote reset
Outputs: Relays
Audible/visual
alarm drive
Analogue
Digital
communications
Communications port
Event logging
1
Panel indication
Approvals
Gasmaster 1
288h x 278w x 110d (mm)
4.5 kg
Back-box: cast aluminium
Front cover: fire-retardant ABS plastic.
IP65
100-240 V ac 50-60 Hz 1.3 A or
20-30 V dc, 60 W max.
1.2 Ah batteries fitted internally
-10ºC to + 50ºC (14 to 122ºF).
0 to 95% RH non-condensing
One 2 or 3 wire 4-20 mA gas detector
(sink or source) or mV bridge pellistor
flammable gas detector. Maximum
detector current: 500 mA
One loop of up to 20 conventional
smoke/heat detectors or manual call
points, or one flame detector (4-20
mA or digital contact signal).
For use with one Crowcon ESU fan
(ie ‘sampling device’ changes to ‘fan’).
Via normally open contact.
Via normally open contact.
Low alarm, High alarm, Fault.
DPCO contacts rated at
250 V ac, 30 V dc 8 A (non-inductive
load), 5 A (inductive load).
12 V or 24 V dc 650 mA maximum
drive
4-20 mA (current source, max. loop
resistance 700 Ω) or
1-5 V dc (min. load 50 KΩ).
RS-485 Modbus RTU
9600 Baud
8 Data bits
No parity
2 Stop bits
Optional 3-way connector for PC con-
figuration and event log upload
Time-stamped log of up to 300 alarm,
fault or system intervention activities.
LCD back-lit display shows gas level (in
ppb, ppm, % volume or % LEL units),
and scrolling alphanumeric status
indication.
LEDs for Alarm, Fault, Power and
Warning status indication.
Integral 85 dB sounder.
EN 50270 (EMC), EN 61010-1 (Low
voltage directive)
ATEX EN60079-25:2010 Explosive
atmospheres - Intrinsically safe electri-
cal systems.
Gasmaster 4
288h x 278w x 110d (mm)
4.5 kg
Back-box: cast aluminium
Front cover: fire-retardant ABS plastic.
IP65
100-240 V ac 50-60 Hz 1.3 A or
20-30 V dc, 60 W max.
1.2 Ah batteries fitted internally
-10ºC to + 50ºC (14 to 122ºF).
0 to 95% RH non-condensing
One to four 2 or 3 wire 4-20 mA gas
detectors (sink or source) or mV bridge
pellistor flammable gas detectors.
Maximum detector current: 500 mA
One to four loops of up to 20 conven-
tional smoke/heat detectors or manual
call points, or one to four flame detec-
tors (4-20 mA or digital contact signal).
For use with one to four Crowcon
ESU fans.
Via normally open contact.
Via normally open contact.
Low alarm and High alarm per chan-
nel plus Common Low, High and
Fault.
DPCO contacts rated at 250 V ac, 30 V
dc 8 A (non-inductive load), 5 A (induc-
tive load).
12 V or 24 V dc 650 mA maximum
drive
4-20 mA for each channel (current
source, max. loop resistance 700 Ω)
or 1-5 V dc (min. load 50 KΩ).
RS-485 Modbus TRU
9600 Baud
8 Data bits
No parity
2 Stop bits
Optional 3-way connector for PC con-
figuration and event log upload
Time-stamped log of up to 300 alarm,
fault or system intervention activities.
LCD back-lit display shows gas level
(in ppb, ppm, % volume or % LEL
units) for all channels, and scrolling
alphanumeric status indication. LEDs
for Alarm, Fault, Power and Warning
status indication
Integral 85 dB sounder.
EN 50270 (EMC), EN 61010-1 (Low
voltage directive)
ATEX EN60079-25:2010 Explosive
atmospheres - Intrinsically safe electri-
cal systems.
1
Event log access requires Gasmaster PC software and communication port. Event log data is held in non-volatile memory, data
will be lost in the event of a complete sys
tem power failure.