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R
3. Operation
When power is applied, a green LED will flash (GREEN/RED)
approximately 5 minutes the green LED will be illuminated permanently and the detector is fully
operational. When a refrigerant leak alarm is detected the LED will flash RED/AMBER, the buzzer will
sound and the relay(s) will change status. The alarm cannot be acknowledged or muted and the
LED/buzzer will indicate an alarm until the refrigerant concentration subsides. In the event of a faulty
sensor the LED will flash RED with an AMBER pulse, the relay(s) will change state and the buzzer will
pulse once a minute. This action will continue until the fault is rectified.
3.1 Operational matrix
Operating State
Dual Relay version
Connection
terminal states
Power removed
3 & 4
OPEN
Warmup (5 minutes)
3 & 4
CLOSED
Normal operation
3 & 4
CLOSED
Sensor fault
3 & 4
OPEN
As the gas concentration increases
Pre-alarm Level 1;
3 & 4
Reading> ~500ppm
CLOSED
For > 2 seconds
Pre-alarm Level 2;
3 & 4
Reading> ~1000ppm
CLOSED
For > 2 seconds
Low Level Alarm;
3 & 4
Reading> ~1000ppm
OPEN
For > 30 minutes
High Level Alarm;
3 & 4
Reading> ~4000ppm
OPEN
For > 30 seconds
After auto reset (gas leak cleared)
After 60 seconds
3 & 4
delay
CLOSED
*In normal operation in clean air the Gv voltage should be within the range given, however the detector will remain in
the normal state until the Gv reaches 2V. If the Gv voltage is greater than 1V, the sensor maybe contaminated or detecting
residual refrigerant or contaminant gas / vapor.
PPM Levels quoted are approximate levels expected for R410a refrigerant.
KSGD-01WS-B
Single Relay version
Connection
terminal states
5 & 6
3 & 4
4 & 5
CLOSED
OPEN
CLOSED
5 & 6
3 & 4
4 & 5
OPEN
CLOSED
OPEN
5 & 6
3 & 4
4 & 5
OPEN
CLOSED
OPEN
5 & 6
3 & 4
4 & 5
CLOSED
OPEN
CLOSED
5 & 6
3 & 4
4 & 5
OPEN
CLOSED
OPEN
5 & 6
3 & 4
4 & 5
OPEN
CLOSED
OPEN
5 & 6
3 & 4
4 & 5
CLOSED
OPEN
CLOSED
5 & 6
3 & 4
4 & 5
CLOSED
OPEN
CLOSED
5 & 6
3 & 4
4 & 5
OPEN
CLOSED
OPEN
LED
Buzzer
OFF
OFF
Flashing
OFF
GREEN>RED
(1Hz)
Constant
GREEN
OFF
RED>OFF (1Hz)
Pulses
1 x
AMBER
FLASH
once per
PER MINUTE
minute
Flashing
OFF
GREEN>OFF (2Hz)
Flashing
OFF
RED>OFF (2Hz)
Flashing
Pulses
RED>AMBER
(2Hz)
2Hz
Flashing
Pulses
RED>AMBER
(4Hz)
4Hz
Constant
GREEN
OFF
Installation and operation manual
Gv
Voltage
N/A
N/A
0.4>1VDC*
<0.1VDC
>2.5VDC
>3.5VDC
>3.5VDC
>4.2VDC
<2.0VDC
KSGD02 Revision: 1.4
Page 11 of 16
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