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March 2015
© 2015 Fluke Corporation. All rights reserved. Specifications are subject to change without notice.
All product names are trademarks of their respective companies.
721Ex
Pressure Calibrator
Users Manual
LIMITED WARRANTY AND LIMITATION OF LIABILITY
This Fluke product will be free from defects in material and workmanship for three years from the date of purchase. This
warranty does not cover fuses, disposable batteries, or damage from accident, neglect, misuse, alteration, contamination, or
abnormal conditions of operation or handling. Resellers are not authorized to extend any other warranty on Fluke’s behalf.
To obtain service during the warranty period, contact your nearest Fluke authorized service center to obtain return
authorization information, then send the product to that Service Center with a description of the problem.
THIS WARRANTY IS YOUR ONLY REMEDY. NO OTHER WARRANTIES, SUCH AS FITNESS FOR A PARTICULAR
PURPOSE, ARE EXPRESSED OR IMPLIED. FLUKE IS NOT LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
CONSEQUENTIAL DAMAGES OR LOSSES, ARISING FROM ANY CAUSE OR THEORY. Since some states or countries
do not allow the exclusion or limitation of an implied warranty or of incidental or consequential damages, this limitation of
liability may not apply to you.
Fluke Corporation
P.O. Box 9090
Everett, WA 98206-9090
U.S.A.
Fluke Europe B.V.
P.O. Box 1186
5602 BD Eindhoven
The Netherlands
11/99
i
Table of Contents
Title Page
Introduction .................................................................................................................... 1
Contact Fluke ................................................................................................................. 1
Safety Information .......................................................................................................... 2
Ex-Hazardous Areas ................................................................................................. 4
Measuring Pressure .................................................................................................. 4
Symbols ......................................................................................................................... 5
Standard Equipment....................................................................................................... 6
Product Features ............................................................................................................ 6
Display ....................................................................................................................... 9
Language Selection ................................................................................................... 11
Home Menu Functionality .......................................................................................... 11
Backlight Use ............................................................................................................ 11
Zero Function ............................................................................................................ 11
Menus ........................................................................................................................ 12
SWITCHTEST ........................................................................................................... 12
721Ex
Users Manual
ii
%ERROR .................................................................................................................. 15
MINMAX ................................................................................................................... 18
SET UNITS ............................................................................................................... 19
CONTRAST .............................................................................................................. 20
Lock and Unlock Configurations (CFG) .................................................................... 20
AUTO OFF ................................................................................................................ 21
RESOLUTION ........................................................................................................... 22
PROBE TYPE ........................................................................................................... 22
DAMP ....................................................................................................................... 24
Measure Pressure ......................................................................................................... 25
Media Compatibility ....................................................................................................... 25
Measurements ............................................................................................................... 26
Transmitter Calibration .................................................................................................. 27
mA Input Function ..................................................................................................... 27
Pressure-to-Current Transmitter Calibration ............................................................. 27
Ranges and Resolution ............................................................................................. 29
Maintenance .................................................................................................................. 30
Replace the Batteries ................................................................................................ 30
Clean the Product ..................................................................................................... 31
User-Replaceable Parts and Accessories ..................................................................... 32
Specifications ................................................................................................................ 34
Environmental ........................................................................................................... 34
Electrical and Temperature Measurement (1 year) ................................................... 34
Physical .................................................................................................................... 35
iii
List of Tables
Table Title Page
1. Symbols ................................................................................................................................. 5
2. Product Features ................................................................................................................... 8
3. Display Functions .................................................................................................................. 10
4. Ranges and Resolutions ....................................................................................................... 29
5. Approved Batteries ................................................................................................................ 30
6. User-Replaceable Parts and Accessories ............................................................................. 32
721Ex
Users Manual
iv
v
List of Figures
Figure Title Page
1. Product Interface ................................................................................................................... 7
2. Display................................................................................................................................... 10
3. Pressure Switch Connection ................................................................................................. 13
4. Percent Error Function Connection ....................................................................................... 16
5. Temperature Measurement with RTD Probe ......................................................................... 24
6. Measure Current ................................................................................................................... 26
7. Pressure-to-Current Transmitter Connections ....................................................................... 28
8. Battery Replacement ............................................................................................................. 31
9. User-Replaceable Parts and Accessories ............................................................................. 33
7


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