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Millwatch / Silowatch
12.2 Summary of Connections
Silowatch (CO & O
Item
High Alarm
Mid Alarm
System OK
High Oxygen
Maintenance Relay
Blowback signal to probe
Standby trigger to monitor
External trigger calibration
(all streams)
CO Current loop 4 - 20mA
output (powered internally
by 24V)
O
Current loop 4 - 20mA
2
output (powered internally
by 24V)
Note: The 4-20 mA output is powered by the Mill / Silowatch analyzer. It must not be
connected to an external power supply and damage may occur it an external voltage is
applied to the terminals.
18
single stream)
2
From
Conn 13
NO
Common
NC
Conn 15
NO
Common
NC
Conn 11
NO
Common
NC
Conn 14
NO
Common
NC
Conn 12
NO
Common
NC
Conn 21
0V dc
24V dc
Conn 9
J2
Conn 23
+ve
-ve
GND
Conn 10
+ve
-ve
GND
To
Pin 1
Customer's recording device
Pin 2
Pin 3
Pin 1
Customer's recording device
Pin 2
Pin 3
Pin 1
Customer's recording device
Pin 2
Pin 3
Pin 1
Customer's recording device
Pin 2
Pin 3
Pin 1
Customer's recording device
Pin 2
Pin 3
Pin 1
Stream A Blowback unit Pin 1
Pin 2
Stream B Blowback unit Pin 2
Pin 1
Short Pin 1 to Pin 2 for
Pin 2
Standby
Pin 1
Short Pin 1 to Pin 2 for
Pin 2
Calibration
Pin 1
Customer's recording device
Pin 2
Pin 3
Pin 1
Customer's recording device
Pin 2
Pin 3
Single Stream
User Guide
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