Fluke 721Ex User manual

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
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

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.
11/99
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

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
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

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
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

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
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

721Ex
Users Manual
iv
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

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
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

721Ex
Users Manual
vi
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

1
Introduction
The 721Ex Pressure Calibrator (the Product) is a simple
to use and versatile pressure calibrator. The two internal
pressure sensors are configured with different pressure
measurement ranges. One range for lower pressure (P1)
and one range for higher pressure (P2). The Product
features inputs for mA, switch contacts, and an RTD
probe.
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

721Ex
Users Manual
2
Safety Information
A Warning identifies conditions and procedures that are
dangerous to the user. A Caution identifies conditions
and procedures that can cause damage to the Product or
the equipment under test.
 Warning
To prevent possible electrical shock, fire, or
personal injury:
•Only assemble and operate high-pressure
systems if you know the correct safety
procedures. High-pressure liquids and
gases are hazardous and the energy from
them can be released without warning.
•Read all safety information before you use
the Product.
•Carefully read all instructions.
•Only operate the Product in non-hazardous
areas or classified areas where this device
is certified to operate.
•Use the correct terminals, function, and
range for measurements.
•Do not apply more than the rated voltage,
between the terminals or between each
terminal and earth ground.
•Do not touch voltages > 30 V ac rms, 42 V
ac peak, or 60 V dc.
•Remove all probes, test leads, and
accessories before the battery door is
opened.
•Do not exceed the Measurement Category
(CAT) rating of the lowest rated individual
component of a Product, probe, or
accessory.
•Do not use and disable the Product if it is
damaged.
•Remove the input signals before you clean
the Product.
•Use only specified replacement parts.
•Have an approved technician repair the
Product.
•Use the Product only as specified, or the
protection supplied by the Product can be
compromised.
•Only change batteries in an area known to
be non-hazardous.
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]