Fluke 718 1G Operating and safety instructions

®
718 Series
Pressure Calibrator
PN 1549632
March 2000 Rev. 3, 3/06
© 2000-2006 Fluke Corporation. All rights reserved. Printed in USA
All product names are trademarks of their respective companies.
Product Overview (E)

LIMITED WARRANTY & LIMITATION OF LIABILITY
This Fluke product will be free from defects in material and workmanship
for three years (one year for pump assembly) from the date of purchase.
This warranty does not cover fuses, disposable batteries or damage from
accident, neglect, misuse 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, send your defective
Calibrator to the nearest Fluke Authorized Service Center with a descrip-
tion of the problem.
THIS WARRANTY IS YOUR ONLY REMEDY. NO OTHER WARRAN-
TIES, SUCH AS FITNESS FOR A PARTICULAR PURPOSE, ARE EX-
PRESSED 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.
Accessing the Users Manual
The 718 Series Pressure Calibrator Users Manual is
available on the 718 CD included with your calibrator.
Contacting Fluke
To order accessories, receive operating assistance, or
get the location of the nearest Fluke distributor or Ser-
vice Center, call:
USA: 1-888-99-FLUKE (1-888-993-5853)
Canada: 1-800-363-5853
Europe: [phone]
Japan: [phone]
Singapore: [phone]
Anywhere in the world: [phone]
Or, visit Fluke's Web site at www.fluke.com.

1
Pressure Calibrator
Introduction
The Fluke 718 Series Pressure Calibrators (hereafter
called “Calibrator”) can 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
•Calculates percentage in Percent Mode
•Calculates mA error in Percent Error Mode
The 718 Pressure Calibrators (hereafter, “the Calibrator”)
include:
•718 1G
•718 30G
•718 100G
•718 300G
The Calibrator takes 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 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.

718 Series
Product Overview
2
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
Standard Equipment
The items listed below are included with your Calibrator. If
the Calibrator is damaged or something is missing, contact
the place of purchase immediately. To order replacement
parts or spares, see the user-replaceable parts list near
the end of this manual.
•TL75 test leads (one set)
•AC72 Alligator clips (one set)
•Holster
•718 Series Product Overview Manual
•718 Series CD-ROM (contains Users Manual)
Safety Information
Use the Calibrator only as specified in the 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.

Pressure Calibrator
Safety Information
3
XW Warning
To avoid possible electric shock or personal injury:
•Never apply more than 30 V between the mA terminals, or between either of the mA terminals and earth
ground.
•Do not use the Calibrator to make measurements in a CAT II, CAT III, or a CAT IV environment.
CAT I equipment is designed to protect against transient from high-voltage, low-energy sources,
such as electronic circuits or a copy machine
•Remove the test leads from the Calibrator before you open the battery door.
•Make sure the battery door is closed and latched before you operate the Calibrator.
•Do not operate the Calibrator if it is damaged.
•Do not operate the Calibrator around explosive gas, vapor, or dust.
•When using probes, keep fingers behind the finger guards on the probes.
•Use only two 9 V batteries, properly installed in the Calibrator case, to power the Calibrator.
•Follow all equipment safety procedures.
•Turn off circuit power before connecting the Calibrator mA and COM terminals in the circuit. Place
Calibrator in series with the circuit.
•When servicing the Calibrator, use only specified replacement parts.
•Do not allow water inside the case.

718 Series
Product Overview
4
XW Warning
•To avoid false readings, which could lead to possible electric shock or personal injury, replace the battery
as soon as the battery indicator Bappears.
•To avoid a violent release of pressure in a pressurized system, shut off the valve and slowly bleed off the
pressure before you attach or detach the internal pressure sensor or Pressure Module fitting to the
pressure line.
•To avoid over pressure damages, do not apply pressure that exceeds the limits listed in the Pressure
Specifications table in the “Specifications” section.
•To avoid mechanically damaging the Calibrator, do not apply torque between the pressure fitting and the
Calibrator case. See Figure 1 for the proper use of tools.
•To avoid misleading readings, disconnect the Pressure Module connector at the Calibrator.
•To avoid damage to the Pressure Module, refer to the related Instruction Sheet.
•To avoid damage to the pump, use with dry air and non-corrosive gases only.
•Check test leads for continuity before using. Inspect Calibrator for cracks or damage, do not use the probes
if they are damaged or show high resistance.

Pressure Calibrator
Safety Information
5
Hold in
fixed
position
wh001f.eps
Figure 1. Connection Technique
Table 2. International Electrical Symbols
Symbol Meaning
J Earth ground
I Fuse
M Battery
W Refer to the manual for information
about this feature.
X Hazardous voltage. Risk of electric
shock.
T Double insulated
$ Conforms to relevant Canadian
Standards Association directives.
P Conforms to relevant European Union
directives
f Pressure

718 Series
Product Overview
6
Getting Aquainted with the Calibrator
Press Oto turn the Calibrator on and off. The Calibrator
displays pressure and current measurements
simultaneously. See Figure 2.
The upper part of the display shows the applied pressure
or vacuum. (Vacuum is shown as a negative value.) Press
Uto select a different unit. When you cycle the power
off and on, the Calibrator retains the unit you last used.
The lower part of the display shows the current (up to 24
mA) applied to the current (mA) inputs.
To source loop voltage, press Uwhile pressing Oon.
Power Saver
The Calibrator automatically turns off after 30 minutes of
inactivity. To reduce this time or disable this feature:
1. With the Calibrator OFF, press O.
2. P.S. xx is displayed, where xx is the turn-off time in
minutes. OFF means the power saver is disabled.
3. Press hto decrease or ato increase the turn-off
time.
4. To disable, press huntil the display shows OFF.
The Calibrator resumes normal operation after 2
seconds.
RANGE-1 O 1 PSI
MAX 5 PSI 34.5 P
-7 O 7 kP
Current mA
measurement
Pressure
measurement
Pressure
module input
Pressure
sensor input
(Install filter here)
Current
input
On/Off Button
718
PRESSURE
CALIBRATOR
HOLD
COM
mA
30V
MAX
0-30psi 0-206kPa
RANGE
UNITS
ZERO
DAMP
mA
MODE
HOLD
LOOP
POWER
BAROMETRIC ADJ.
MIN
MAX
SWITCH
TEST
ENTER
wh005f.eps
Figure 2. Front Panel Features

Pressure Calibrator
Pushbuttons
7
Pushbuttons
Pushbutton operation is described in Table 3.
Table 3. Pushbutton Functions
Pushbutton Description
UPress to select a different pressure unit. All units are available when the pressure sensor input is used. For
higher pressure module inputs, inappropriate (out-of-range) units are not available. Press Oon while
pressing Uto source loop voltage.
D
ENTER Turns pressure reading damping on and off. With damping on, the Calibrator averages several
measurements before displaying a reading. Press to confirm selection of 0 % and 100 % output parameters.
ZPress to zero the pressure display. Vent pressure to atmosphere before you press this pushbutton. With an
Absolute Pressure Module, see special instructions below.
NPress to read the minimum pressure and current readings since power was turned on or the registers were
cleared. Press again to read the maximum pressure and current readings since power was turned on. Press
and hold for 3 seconds to clear the MIN/MAX registers.
SPress to perform switch test.
Z
aPress to toggle the mA display mode between mA, mA Percent, and mA Percent Error.
h
WPress hto freeze the display. The gsymbol appears on the display. Press hagain to resume
normal operation.

718 Series
Product Overview
8
Switch Test
To perform a switch test follow these steps:
Note
This example used a normally closed switch.
The procedure is the same for an open switch
but the display reads OPEN instead of CLOSE.
1. Connect the Calibrator mA and COM terminals
to the switch using the pressure switch terminals
and connect the pump from the Calibrator to the
pressure switch. The polarity of the terminals
does not matter.
Note
If using an external pump, connect the pump to
the Calibrator and to the input of the switch
using a tee fitting.
2. Make sure the vent on the pump is open and
zero the Calibrator if necessary. Close the vent
after Zeroing the Calibrator.
3. Press Sto enter pressure switch test mode.
The Calibrator will display CLOSE instead of a
mA measurement.
4. Apply pressure with the pump slowly until the
switch opens.
Note
In the switch test mode, the display update rate
is increased to help capture changing pressure
inputs. Even with this enhanced sample rate,
pressuring the device under test should be done
slowly to ensure accurate readings.
5. OPEN is displayed once the switch is open.
Bleed the pump slowly until the pressure switch
closes. RCL appears on the display.
6. Press Sto read the pressure values for when
the switch opened, for when it closed, and for
the deadband.
Hold Sfor three seconds to exit the switch test or
press ato reset the switch test.