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Input
Calibration -
Calibration
Set Up and Wiring for PV Inputs
190
DR4500A Classic Series Circular Chart Recorder With or Without Control Product Manual
Release M
April 2017
4
–20 mA inputs
Refer to Figure 7-9 and wire the recorder according to the procedure given in Table 7-12.
Table 7-12 Set up wiring procedure for 4
–20 mA inputs
Step
Action
1
Connect the copper wire to the calibration source (see Figure 7-9).
2
Connect the other end of the copper wire to the clamp type terminals in the plug for the
applicable input connector (J2).
3
Reinstall the plug into the input connector (J2) on the applicable circuit board for input 1 or
input 2.
#2 #1
22305
+
_
_
+
Copper wires
Calibration source
Plug J2
MA
W1
Be sure W1/MA jumper is in
position MA; this connects
250
resistor (internal on
PCB) across inputs terminals
4-20 mA
T/C
RTD
Be sure W3 jumper
is in position T/C
on the input board.
Figure 7-9 Calibration set up diagram for 4
–20 mA inputs