Fluke - 51 - Thermometer
Manufacturer:
Equipment:
51
Date:
1995
Category:
Group:
Sub Group:
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)
Service manual
Manual type:
Service manual
Pages:
40
Size:
3.6 MB
Language:
english
Revision:
Manual-ID:
768234
Date:
June 1995
Quality:
Scanned document, all readable.
Upload date:
Jan. 12, 2018
MD5:
80f9f698-4a7a-08a7-036a-df4221e70582
Downloads:
951