Millwatch/Silowatch
Single Stream
User Guide
Page 18
12.2 Summary of Connections
Silowatch (CO & O
2
single stream)
Item
From
To
High Alarm
Conn 13
NO
Common
NC
Pin 1
Pin 2
Pin 3
Customer's recording device
Mid Alarm
Conn 15
NO
Common
NC
Pin 1
Pin 2
Pin 3
Customer's recording device
System OK
Conn 11
NO
Common
NC
Pin 1
Pin 2
Pin 3
Customer's recording device
High Oxygen
Conn 14
NO
Common
NC
Pin 1
Pin 2
Pin 3
Customer's recording device
Maintenance Relay
Conn 12
NO
Common
NC
Pin 1
Pin 2
Pin 3
Customer's recording device
Blow-back signal to
probe
Conn 21
0V dc
24V dc
Pin 1
Pin 2
Stream A Blow-back unit Pin 1
Stream B Blow-back unit Pin 2
Standby trigger to
monitor
Conn 9
Pin 1
Pin 2
Short Pin 1 to Pin 2 for
Standby
External trigger
calibration (all streams)
J2
Pin 1
Pin 2
Short Pin 1 to Pin 2 for
Calibration
CO Current loop 4 -
20mA output (powered
internally by 24V)
Conn 23
+ve
-ve
GND
Pin 1
Pin 2
Pin 3
Customer's recording device
O
2
Current loop 4 -
20mA output (powered
internally by 24V)
Conn 10
+ve
-ve
GND
Pin 1
Pin 2
Pin 3
Customer's recording device
