Fluke 718-100G Manual de usuario
®
718 Series
Pressure Calibrator
Users Manual
July 1998 Rev. 4, 3/06
© 1998-2006 Fluke Corporation. All rights reserved. Printed in U.S.A.
All product names are trademarks of their respective companies.
i
Table of Contents
Title Page
Introduction..................................................................................................................... 1
Safety Information .......................................................................................................... 2
Getting Acquainted with the Calibrator ........................................................................... 6
Power Saver.............................................................................................................. 6
Switch Test..................................................................................................................... 8
Zeroing with Absolute Pressure Modules ....................................................................... 9
Calibrating a P/I Transmitter........................................................................................... 10
Using the Internal Pump ............................................................................................ 10
Pump Valve Assembly Cleaning Instructions ................................................................. 15
Using an External Pump................................................................................................. 16
External Fluke Pressure Module Compatibility ............................................................... 18
Sourcing Loop Voltage ................................................................................................... 19
Percent Error Setup........................................................................................................ 19
Maintenance................................................................................................................... 20
In Case of Difficulty.................................................................................................... 20
Cleaning .................................................................................................................... 20
Calibration ................................................................................................................. 20
718 Series
Users Manual
ii
Replacing the Batteries ............................................................................................. 21
Parts and Accessories ................................................................................................... 22
Specifications................................................................................................................. 25
Pressure Sensor Input .............................................................................................. 25
Pressure Module Input .............................................................................................. 25
DC mA Input ............................................................................................................. 25
Loop Supply .............................................................................................................. 25
General Specifications .............................................................................................. 26
How to Contact Fluke..................................................................................................... 27
iii
List of Tables
Table Title Page
1. Input Units ............................................................................................................................. 2
2. Safety Information ................................................................................................................. 3
3. International Electrical Symbols............................................................................................. 5
4. Pushbutton Functions............................................................................................................ 7
5. Pump Features...................................................................................................................... 10
6. Recommended Pressure Modules ........................................................................................ 14
7. Fluke Pressure Module Compatibility .................................................................................... 18
8. Replacement Parts................................................................................................................ 22
718 Series
Users Manual
iv
v
List of Figures
Figure Title Page
1. Connection Technique........................................................................................................... 5
2. Front Panel Features............................................................................................................. 6
3. Pump Features...................................................................................................................... 9
4. Internal Pressure Sensor with Internal Pump ........................................................................ 12
5. Pressure Module with Internal Pump..................................................................................... 13
6. Pressure Module with External Pump.................................................................................... 17
7. Sourcing Loop Voltage .......................................................................................................... 19
8. Battery Replacement............................................................................................................. 21
9. Replacement Parts................................................................................................................ 24
718 Series
Users Manual
vi
1
Pressure Calibrator
Introduction
The Fluke 718 Series Pressure Calibrators do the
following:
•Calibrate P/I (pressure to current) transmitters
•Measure pressure via a 1/8-inch NPT pressure fitting
and an internal pressure sensor or via a Fluke 700
Series Pressure Module
•Source pressure
•Measure current up to 24 mA
•Simultaneously display pressure and current
measurements.
•Supply loop voltage
•Calculate mA percentage in Percent Mode
•Calculate mA error % in Percent Error Mode
The 718 Pressure Calibrators (hereafter, “the Calibrator”)
include:
•718 1G
•718 30G
•718 100G
•718 300G
The Calibrator makes 5-digit pressure readings in the
following units: psi, inH2O at 4 °C, inH2O at 20 °C, kPa,
cmH2O at 4 °C, cmH2O at 20 °C, bar, mbar, kg/cm2, inHg,
and mmHg.
Pressure sensor specifications are as listed under
“Pressure Sensor Input”.
The Calibrator measures pressure sensor inputs in the
units shown in Table 1.
For pressure modules, full scale readings for all pressure
ranges can be made in psi, kPa, and inHg units. To avoid
display overflow, full scale readings are limited to 1000 psi
in cmH2O, mbar, and mmHg units, and 3000 psi in inH2O
units. Pressures of at least 15 psi must be measured for
meaningful readings in bar and kg/cm2units.
Your Calibrator is supplied with a holster, two installed 9 V
alkaline batteries, one set of TL75 test leads, one set of
AC70A alligator clips, one 700-ILF In-Line Filter (to protect
the pump), a Product Overview Manual, and a CD-Rom.
If the Calibrator is damaged or something is missing,
contact the place of purchase immediately. Contact your
Fluke distributor for information about accessories. See
718 Series
Users Manual
2
“How to Contact Fluke.” To order replacement parts or
spares, see “Parts and Accessories.”
Table 1. Input Units
Displayed Pressure Units
psi
inH2O at 4°C
inH2O at 20°C
cmH2O at 4°C
cmH2O at 20°C
bar
mbar
kPa
inHg
mmHg
kg/cm2
Safety Information
Use the Calibrator only as specified in this Users Manual,
otherwise the protection provided by the Calibrator may be
impaired.
A Warning identifies conditions and actions that pose
hazard(s) to the user; a Caution identifies conditions and
actions that may damage the Calibrator or the equipment
under test.
Este manual sirve para los siguientes modelos
8
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