IM-P402-62 AB Issue 5
7
1
2
3
4
5
6
7
8
9
10
11
12
+
+
11
12
10
11
12
10
11
12
+
10
11
12
10
11
12
ON
1
2
ON
1
2
ON
1
2
ON
1
2
A
1
2
3
1
2
3
Select
voltage
internally
4 - 20 mA Test - connect ammeter between
terminals 5 and 6. Do not dissconnect loop.
0 - 20 mA
or
4 - 20 mA
LP20 /PA20
Capacitance
probe
Alternative
remotely
powered
current
or voltage
input
INPUT
L
N
Mains
Fuse
Max. 3A
Common
Common
Additional
unit if fitted
4 - 20 mA transmitter
powered from the
LT2010
Additional
unit
Multiple transmitters
Several transmitters can be
connected to a single probe if
required.
Connect wiring as shown in the
diagram.
Ensure resistance from probe
body to pipework /boiler shell is
less than 1
W
.
Links on preamplifier provide sensitivity
selection - see preamplifier IMI
The earth pin is internally connected to the
PA20 body and earthed by the LP20 probe.
Do not connect this earth pin to other earths.
Fig. 5
Test
Output - Maximum 1000
W
LP20 /PA20
Capacitance
probe
Screen
Screen
Ensure resistance from probe body to
pipework /boiler shell is less than 1
W
.
See CAUTION page 6
