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Service Manual - Page 1
Printed in USA All product names are trademarks of their respective companies. All rights reserved. ®
51, 52, 53, 54 Series II Thermometer
Service Manual
PN 1276123 October 1999
© 1999 Fluke Corporation.
Service Manual - Page 2
...price. Fluke warrants that software will be returned to the nearest Fluke authorized service center. Warranty support is available if product is warranted to any other provision. To obtain warranty service, contact your nearest Fluke authorized service center or send the product, with its functional specifications...of repair/replacement parts when product purchased in Fluke's opinion, has...
Service Manual - Page 9
...8226; Specifications • Performance tests • Calibration and adjustment • Basic maintenance • Replaceable parts For complete operating instructions, refer to do not perform the performance tests or calibration procedures described in this manual before using the Fluke 51, 52, 53, 54 Series II Thermometers. Introduction
This manual provides the following service information...
Service Manual - Page 10
... Safety Information
Use the thermometer only in the ways specified in the world: +1-425-446-5500
Or, visit Fluke's Web site at www.fluke.com. a Caution statement identifies conditions and actions that pose a hazard to the user; In this manual. 51, 52, 53, 54 Series II Service Manual
Service Centers
To contact Fluke, order parts, or locate a Fluke service center, call one...
Service Manual - Page 12
... difference between T1 and T2)
Temperature Scale
ITS-90
Applicable
Standards
NIST-175
Accuracy is equipment for connection to circuits in which measures are... T] R- The above specifications do not include thermocouple error.
4 and 0.45 % of Impulse Withstand Voltage protection provided. 51, 52, 53, 54 Series II Service Manual
Specifications
General Specifications
Weight
280 g (10...
Service Manual - Page 13
..., calibration and/or repair is released. If the thermometer fails any part of test equipment used in Figure 1.
5 Display Test
Turn the thermometer on while pressing the h button. Table 2. Check the batteries and replace them if necessary. pint, or larger capacity 0.02 °C Resolution 0.05 °F Resolution
Recommended Model
Fluke 5700A or equivalent Fluke 80CK-M Fluke P/N 779942 Fluke...
Service Manual - Page 14
..., 54 Series II Service Manual
51
53
52
54
Figure 1. Wide Range Performance Test Procedure This test verifies the instrument specifications. Prepare a Dewar Flask by ... add enough water to accept the Mercury thermometer and thermocouple wires, or use a standard laboratory cork.
2. If the instrument fails this test, perform the calibration procedure. Fill the Dewar Flask with shaved...
Service Manual - Page 16
....
2. Under File, select Save As. 51, 52, 53, 54 Series II Service Manual
Table 3. Open up a New Connection with a name like "Fluke 54 IR Test".
5. Type in front of the thermometer now shows the thermometer name (Fluke 53-II or Fluke 54-II), and the units operating software version (e.g. Select Port Settings: 9600 baud rate, 8 data bits, no parity...
Service Manual - Page 18
... output to a minimum while the thermometer takes A/D readings.
6. With CAL A-d selected, press E. Wait while it takes A/D readings. Calibration Button Access
zb02f.eps
3. Note
For steps 6 and 8, keep hand and body motion to stabilize.
8. Using K or N, select "CAL donE", then press E to "CAL A-d". 51, 52, 53, 54 Series II Service Manual
Calibration button access
Figure 4. The menu...
Service Manual - Page 19
... a specific thermocouple. Referring to Figure 2, connect the equipment to adjust the thermometer's readings for errors of the thermometer (the reference junction) have stabilized. Note Once adjusted, do not change the offset until the thermometer is in the 51/52 Series II Users Manual, and the 53/54 Series II Users Manual.)
11 Use the following procedure: 1.
In SETUP, change...
Service Manual - Page 20
... Series II Service Manual
Basic Maintenance
Basic maintenance required by placing them in this section.
Cleaning the Thermometer Caution
• To avoid damaging the thermometer, do not use the following procedure: 1. Clean the thermometer case with isopropyl alcohol or deionized water and a soft brush. The pca may be washed with a mild detergent and water. Replace the...
Service Manual - Page 22
... For reassembly, the thermometer top case should be... side of the backlight with (but not over) a similar guide on the Main PCA. 51, 52, 53, 54 Series II Service Manual
6.
If the Isothermal PCA is kept slightly loose, it should... 4. The LCD decal is basically the reverse of the top case facing the user. Install the LCD decal. 2. Attach the Isothermal PCA to the Main PCA by taking the ...
Service Manual - Page 23
...of this manual. Reinsert and tighten the two pca screws. Replaceable Parts
Refer to be reinstalled into the top case. To order replaceable parts, see the "Service Centers" section of the top case. Unless specified in the top case.
3.
Align the backlight pins with the backlight posts.
5.
Table 4. Thermometer
Replaceable Parts
5. Replaceable Parts
Item
Fluke Part
Number...
Service Manual - Page 24
...) FLUKE 51-54 SERIES II PRODUCT OVERVIEW THERMOCOUPLE ASSY, T/C ASSY, K-TYPE, BEADED, MOLDEDPLUG
Model Number 51, 53 52, 54
51, 53 52, 54 51, 53 52, 54 All 51 52 53 54 All All All 51 52 53 54 All All All
All 51, 53 52, 54
16 Replaceable Parts (cont.)
Item
Fluke Part
Number Qty. 51, 52, 53, 54 Series II Service Manual
Table...
Service Manual - Page 28
warnings, 1, 12
2
51, 52, 53, 54 Series II
Service Manual
-S- Users Manual 51, 52 Series II, 1 53, 54 Series II, 1
-W- safety, 2 cautions and warnings, 3
service centers phone numbers, world wide web address, 2
specifications electrical, 4 environmental, 4 general, 4
-T-
test equipment
performance testing and calibration, 5
-U-
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