Fluke 721 Bedienungsanleitung
October 2013
© 2013 Fluke Corporation. All rights reserved. Specifications are subject to change without notice.
All product names are trademarks of their respective companies.
721
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
Symbols ......................................................................................................................... 4
Standard Equipment....................................................................................................... 5
Product Features............................................................................................................ 5
Display....................................................................................................................... 8
Language Selection................................................................................................... 9
Home Menu Functionality.......................................................................................... 10
Backlight Use ............................................................................................................ 10
Zero Function ............................................................................................................ 10
External Sensor (Absolute)........................................................................................ 10
Menus ............................................................................................................................ 11
SWITCHTEST ........................................................................................................... 11
%ERROR .................................................................................................................. 14
721
Users Manual
ii
MINMAX ................................................................................................................... 17
SET UNITS ............................................................................................................... 18
CONTRAST .............................................................................................................. 19
Lock and Unlock Configurations (CFG) .................................................................... 19
AUTO OFF................................................................................................................ 20
RESOLUTION........................................................................................................... 21
HART ........................................................................................................................ 21
PROBE TYPE........................................................................................................... 22
DAMP ....................................................................................................................... 24
Measure Pressure ......................................................................................................... 24
Media Compatibility ....................................................................................................... 25
Measurements............................................................................................................... 25
Transmitter Calibration .................................................................................................. 28
mA Input Function..................................................................................................... 28
Pressure-to-Current Transmitter Calibration ............................................................. 28
Ranges and Resolution............................................................................................. 30
Maintenance .................................................................................................................. 31
Replace the Batteries................................................................................................ 31
Clean the Product ..................................................................................................... 32
User-Replaceable Parts and Accessories ..................................................................... 33
General Specifications................................................................................................... 35
Environmental........................................................................................................... 35
Electrical and Temperature Measurement (1 year)................................................... 35
Physical .................................................................................................................... 36
iii
List of Tables
Table Title Page
1. Symbols................................................................................................................................. 4
2. Product Features................................................................................................................... 7
3. Display Functions .................................................................................................................. 9
4. Ranges and Resolutions ....................................................................................................... 30
5. User-Replaceable Parts and Accessories ............................................................................. 33
721
Users Manual
iv
v
List of Figures
Figure Title Page
1. Product Interface ................................................................................................................... 6
2. Display................................................................................................................................... 8
3. Pressure Switch Connection ................................................................................................. 12
4. Percent Error Function Connection ....................................................................................... 15
5. Temperature Measurement with RTD Probe......................................................................... 23
6. Measure Current ................................................................................................................... 26
7. Voltage Measurement ........................................................................................................... 27
8. Pressure-to-Current Transmitter Connections....................................................................... 29
9. Battery Replacement............................................................................................................. 32
10. User-Replaceable Parts and Accessories ............................................................................. 34
721
Users Manual
vi
1
Introduction
The 721 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. An external pressure module option gives a wider
range of pressure calibration options that include absolute
and differential pressure measurement.
Contact Fluke
To contact Fluke, call one of the following telephone
numbers:
•Technical Support USA: 1-800-44-FLUKE
(1-800-443-5853)
•Calibration/Repair USA: 1-888-99-FLUKE
(1-888-993-5853)
•Canada: 1-800-36-FLUKE (1-800-363-5853)
•Europe: +31 402-675-200
•Japan: +81-3-6714-3114
•Singapore: +65-6799-5566
•Anywhere in the world: +1-425-446-5500
Or, visit Fluke's website at www.fluke.com.
To register your product, visit http://register.fluke.com.
To download manuals, or to view, print, or download the
latest manual supplement, visit
http://us.fluke.com/usen/support/manuals.
721
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.
•Do not use the Product around explosive
gas or vapor.
•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.
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