Table 7-4 Equipment Needed - Honeywell DR4500A Product Manual

Equipment needed
Table 7-4 lists the equipment required to calibrate the specific types of inputs listed in the table. You will
need a medium size bladed screwdriver for general use and a small size bladed screwdriver for use with the
screws on the connector plugs.
Type of Input
Thermocouple Inputs
(Ice Bath)
Thermocouple Inputs
(Ambient Temperature)
Thermocouple Inputs
(Compensated Calibrator)
RTD (Resistance Thermometer
Device)
Radiamatic, Milliampere, Millivolt, and
Volts Inputs
Release M DR4500A Classic Series Circular Chart Recorder With or Without Control Product Manual
April 2017

Table 7-4 Equipment needed


A calibrating device with ±0.02% accuracy for use as a
signal source such as a millivolt source.

Thermocouple extension wire that corresponds with the
type of thermocouple that will be used with the recorder
input.

Two insulated copper leads for connecting the
thermocouple extension wire from the ice baths to the
precision calibrator.

Two containers of crushed ice.

A calibrating device with ±0.02% accuracy for use as a
signal source such as a millivolt source.

Two insulated copper leads for connecting the calibrator to
the recorder.

A calibrating device with temperature compensation and
±0.02% accuracy for use as a signal source.

Thermocouple extension wire that corresponds with the
type of thermocouple that will be used with the recorder
input.

A resistance decade box, with ±0.02% accuracy, capable
of providing stepped resistance values over a minimum
range of 0 to 1400 ohms with a resolution of 0.01 ohm.

Three insulated copper leads for connecting the decade
box to the controller.

A calibrating device with ±0.02% accuracy for use as a
signal source.

Two insulated copper leads for connecting the calibrator to
the controller.
Input Calibration - Preliminary Information
Equipment Needed
181