30119-41 Rev. 1.6/02-07
10
ANALOG OUT
INPUT
RESET INPUT
GROUND
12 VOLT OUT
DC POWER IN
ISOLATE -12V
I12V
A.C. IN
A.C. IN
NOTE: Connections for measuring the amount of current flowing in the 4-20 mA loop.
There should be 4.0 mA with no water flowing through meter and 20.0 mA at full scale.
Connect ammeter in series with circuit.
110 VAC / 60 HZ
TO INSTRUMENT
IN60
TERMINAL STRIP
NOTE: Connections for checking power supply voltage for the transmitter.
(24 VDC) connect voltmeter in parallel with circuit.
RED
TESTING TRANSMITTER OUTPUT AND POWER SUPPLY VOLTAGE
TR28-2 TRANSMITTER (4-20 mA OUTPUT)
WIRED TO A MODEL IN60
GREEN
-
+
4-20 mA
AMMETER
TESTING TRANSMITTER OUTPUT AND POWER SUPPLY VOLTAGE
TR28-2 TRANSMITTER (4-20 mA OUTPUT)
WIRED TO A MODEL IN48 12" CHART RECORDER
SOLD BEFORE 05/93
250 OHM RESISTOR
JUMPER
RED
GREEN
AMMETER
4-20 mA
+
-
NOTE: Connections for checking transmitter power supply voltage (24 VDC).
Connect voltmeter in parallel with circuit.
TRANSMITTER POWER
(24 VDC)
NOTE: Connections for measuring the amount of
current flowing in the 4-20 mA loop. There should
be 4.0 mA with no water flowing through meter
and 20.0 mA at full scale. Connect ammeter in
series with circuit. If there is no current in the
loop and the power supply voltage is there, then
the problem is possibly in the communication lines
or the transmitter circuit board.
NOTE: TRANSMITTER CABLE
SHIELD TO GROUND.
NOTE: TRANSMITTER CABLE
SHIELD TO GROUND.
3
4
5
12
13
14
15
16
17
18
+
-
VOLT
METER
(24 VDC)
4-20 mA Output
Left Pin
Right Pin
Green (-) Red (+)
+
IN48 TERMINAL STRIP
+ -
J-10
+ -
4-20 mA INPUT
J-6
+ -
VOLT
METER
+
-
4-20 mA Output
Left Pin
Right Pin
Green (-) Red (+)
W
X
W
X
