Current Proportional Output/Aux Out 2 And 3 Calibration; Table 8-1 Set Up Wiring Procedure Current Proportional Output/Aux Out 2 And 3; Figure 8-1 Test Equipment Connections For Calibrating Current Proportional Output - Honeywell DR4500A Product Manual

8.2 Current Proportional Output/Aux Out 2 and 3 Calibration

Introduction
Calibrate the recorder so that the output provides the proper amount of current over the desired range.

The recorder can provide an output current range of from 3.1to 21 mA and can be calibrated at 4 mA for
0 % of output and 20 mA for 100 % of output or any other values between 3.1 and 21 mA.
Equipment needed
You will need a standard shop type milliammeter, with whatever accuracy is required, capable of
measuring 0 to 20 milliamps.
Calibrator connections
Refer to Figure 8-1 and wire the recorder according to the procedure given in Table 8-1.

Table 8-1 Set up wiring procedure current proportional output/Aux Out 2 and 3

Step
1 With the power off, door open, and the chart plate swung out; tag and disconnect field wiring
from the plug in connector J1 on the appropriate control output PCB (see Figure 8-1).
Observing polarity, connect a milliammeter's leads to the plug for connector J1.
2
3 Close the chart plate: apply power and allow the recorder to warm up 15 minutes before you
calibrate.
Plug J1
(current output)

Figure 8-1 Test equipment connections for calibrating current proportional output

Release M DR4500A Classic Series Circular Chart Recorder With or Without Control Product Manual
April 2017
Output Calibration - Current Proportional Output/Aux Out 2 and 3 Calibration
Milliammeter
+
-
Action
Control output
#1 PCB
Control output
#2 PCB
#2 #1
22095
195