M A I N T E N A N C E A N D T R O U B L E S H O O T I N G
Calibration Overview
34
LDT-5500B Series
C H A P T E R
5
Recommended Equipment
Recommended test equipment for calibrating the LDT-5500B Series Temperature
Controller is listed in Table 3.1. Equipment other than that shown in the table may
be used if the specifications meet or exceed those listed.
Table 5.1
Environmental Conditions
Calibrate this instrument under laboratory conditions. We recommend calibration
at 23
o
C ± 1.0
o
C. When necessary, however, the LDT-5500B Series Temperature
Controller may be calibrated at its intended use temperature if this is within the
specified operating temperature range of 0 to 40
o
C.
Warm Up
The LDT-5500B Series Temperature Controller should be allowed to warm up for
at least 1 hour before calibration.
DESCRIPTION
MFG / MODEL
SPECIFICATION
DMM
HP 3457A
DC Amps (@ 1.0A): +0.02%
Resistance (@ 10
): 0.02%
0.1
A or 0.1 mW resolution
Resistors
Metal Film
15 k
(for ITE calibration)
4 k
and 40 k
(for 100
A calibration)
4 k
and 400 k
(for 10
A calibration)
4 k
and 10 k
(for LM335 calibration)
10 k
and 20 k
(for AD590 calibration)
High Power
1
, 20W, low TCR (for 5525B ITE calibration)
1.5
, 50W, low TCR (for 5545B ITE calibration)