Equipment information
Fluke 52 Thermometer
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Model:
52
Date:
1995
Category:
Group:
Description:
K/J Thermometer
Information
FUNCTIONAL OVERVIEW
The Fluke 51 and 52 K/J Thermometers take nonlinear voltages
from thermocouples and convert the voltages to meaningful
temperature readings. These thermometers are actually
microvoltmeters with additional features to compensate
forthe reference junction and non-linearities of thermocouples.
The heart of these instruments is an analog-to-digital
Converter (a/d converter) that develops a numerical
representation of an analog voltage. The a/d Converter (UI)
works in the range of -10 mV to +55 mV. For the Fluke 52,
three signals must be measured: thermocouple I, thermocouple
2, and the signal that represents the temperature of the
reference junctions. To measure the three signals, the a/d
Converter is connected to each of these signals one at a
time. A microcomputer (U2) coordinates the switching and a/d
activity performed by U1. U2 also interprets the numbers
sent by the a/d converter, including reference junction
compensation, linearization, and degrees Celsius and
Fahrenheit conversion. U2 also monitors the instrument
control buttons and drives the liquid crystal display (LCD)
Manual Type:
Service Manual
Pages:
40
Size:
3.60 Mbytes (3779412 Bytes)
Language:
english
Revision:
Manual-ID:
768234
Date:
1995 06 01
Quality:
Scanned document, all readable.
Upload date:
2018 01 12
MD5:
80f9f6984a7a08a7036adf4221e70582
Downloads:
1406
Information
This manual presents service information for the Fluke 51
and 52 K/J Thermometers. Included are a theory of operation,
general maintenance procedures, performance tests,
calibration procedures, troubleshooting information, a list
of replacement parts, and schematic diagrams.