Each Fluke product is warranted to be free from defects in material and workmanship under normal use and service. The warranty period is
three years (one year for pump assembly) and begins on the date of shipment. Parts, product repairs, and services are warranted for 90
days. This warranty extends only to the original buyer or end-user customer of a Fluke authorized reseller, and does not apply to fuses, disposable batteries, or to any product which, in Fluke's opinion, has been misused, altered, neglected, contaminated, or damaged by accident
or abnormal conditions of operation or handling. Fluke warrants that software will operate substantially in accordance with its functional
specifications for 90 days and that it has been properly recorded on non-defective media. Fluke does not warrant that software will be error
free or operate without interruption.
Fluke authorized resellers shall extend this warranty on new and unused products to end-user customers only but have no authority to extend a greater or different warranty on behalf of Fluke. Warranty support is available only if product is purchased through a Fluke authorized
sales outlet or Buyer has paid the applicable international price. Fluke reserves the right to invoice Buyer for importation costs of repair/replacement parts when product purchased in one country is submitted for repair in another country.
Fluke's warranty obligation is limited, at Fluke's option, to refund of the purchase price, free of charge repair, or replacement of a defective
product which is returned to a Fluke authorized service center within the warranty period.
To obtain warranty service, 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 difficulty, postage and insurance prepaid (FOB Destination). Fluke assumes no risk
for damage in transit. Following warranty repair, the product will be returned to Buyer, transportation prepaid (FOB Destination). If Fluke
determines that failure was caused by neglect, misuse, contamination, alteration, accident, or abnormal condition of operation or handling,
including overvoltage failures caused by use outside the product’s specified rating, or normal wear and tear of mechanical components,
Fluke will provide an estimate of repair costs and obtain authorization before commencing the work. Following repair, the product will be
returned to the Buyer transportation prepaid and the Buyer will be billed for the repair and return transportation charges (FOB Shipping
Point).
THIS WARRANTY IS BUYER'S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE. FLUKE SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES OR
LOSSES, INCLUDING LOSS OF DATA, ARISING FROM ANY CAUSE OR THEORY.
Since some countries or states do not allow limitation of the term of an implied warranty, or exclusion or limitation of incidental or consequential damages, the limitations and exclusions of this warranty may not apply to every buyer. If any provision of this Warranty is held invalid or
unenforceable by a court or other decision-maker of competent jurisdiction, such holding will not affect the validity or enforceability of any
other provision.
Read Safety Information before using the
Calibrator.
The Fluke Model 718Ex 30G, 718Ex 100G, and 718Ex
300G 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 Fluke 700PEx
Series Pressure Modules.
• Measure current up to 24 mA.
• Simultaneously display pressure and current
measurements.
•Perform switch testing.
The Calibrator is for use ONLY in Ex-hazardous areas.
The Calibrator makes 5-digit pressure readings in the
following units: psi, inH
cmH2O at 4 °C, cmH2O at 20 °C, bar, mbar, kg/cm2, inHg,
and mmHg. Full-scale pressure sensor input is as follows:
The Calibrator measures pressure sensor inputs in the
units shown under Pressure Sensor Range and
Resolution.
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 inH
O units. Pressures of at least 15 psi must be
2
measured for meaningful readings in bar and kg/cm2
units.
The Calibrator is supplied with:
• a holster
• one installed 9 V alkaline battery
• one set of TL75 test leads
• one set of AC72A alligator clips
• a Control Drawing
• a CD-Rom
If the Calibrator is damaged or something is missing,
contact the place of purchase immediately. Contact a
Fluke distributor for information about accessories. See
Contacting Fluke. To order replacement parts or spares,
see Parts and Accessories.
A Wa
rning 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.
Safety and electrical symbols used in this manual and on
the Calibrator are displayed in Table 1.
• Remove test leads from the Calibrator before opening the battery door.
• This equipment is specified for use in measurement category I (CAT I) pollution degree 2 environments
and should not be used in CAT II, CAT III, or CAT IV environments. Voltage transients should not
exceed 300 volts for the CAT I applications where this product is used. Measurement transients are
defined in IEC1010-1 as 2 µs rise time with a 50 μs duration at 50 % of the maximum amplitude height.
•Measurement Category I (CAT I) is defined for measurements performed on circuits not directly
connected to the mains.
•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 open the Calibrator case.
Opening the case invalidates the Calibrator’s Ex Approval.
• Do not allow water inside the case.
• Do not use in a damp or wet environment.
• When using the Calibrator’s internal pressure sensor, do not connect a pressure module at the
Calibrator to avoid misleading readings. If both a pressure module and the internal pressure sensor are
connected, the Calibrator displays ONLY the pressure module measurement. To avoid misleading
readings, disconnect the pressure module connector at the Calibrator.
•To avoid a violent release of pressure in a pressurized system, shut off the valve and slowly bleed off
the pressure before attaching or detaching the internal pressure sensor or pressure module fitting to
the pressure line.
•To avoid overpressure damage, do not apply pressure to the internal pressure sensor input that
Applying a voltage greater than 30 V to the input of the
Calibrator invalidates its Ex Approval and may impair its
safe operation in an Ex-hazardous area.
If there is any reason to suspect that the safe operation of
the Calibrator has been affected, it must be immediately
withdrawn from use, and precautionary measures must be
taken to prevent any further use of the Calibrator in an Exhazardous area.
Hold in
fixed
position
Fully observe all instructions, warnings, and cautions
contained in this manual. In case of doubt due to
translation and/or printing errors, refer to the original
English users manual.
The safety features and integrity of the unit may be
compromised by any of the following:
• External damage to the housing
• Internal damage to the Calibrator
• Exposure to excessive loads
• Incorrect storage of the unit
• Damage sustained in transit
• Correct certification is illegible
• Using the product with the red holster removed
• Functioning errors occur
• Permitted limitations are exceeded
• Functioning errors or obvious measurement
inaccuracies occur which prevent further
measurement by the Calibrator
•Opening the case
Safety Regulations
The use of the Calibrator meets the requirements of the
regulations providing that the user observes and applies
the requirements as stated in the regulations and that
improper and incorrect use of the unit is avoided.
•Use must be restricted to the specified application
parameters.
• Do not open the Calibrator.
• Do not remove or install the battery within the
Ex-hazardous area.
•Do not carry additional batteries within the
Ex-hazardous area.
•Use only type-tested batteries. The use of any other
batteries will invalidate the Ex-certification and present
a safety risk.
•Do not use the Calibrator in an Ex-hazardous area
unless it is completely and securely fitted in its
accompanying red holster.
•Only use the Calibrator in circuits with compatible
Press 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.
Turns pressure reading damping on and off. With damping on, the Calibrator averages several
measurements before displaying a reading.
Press to zero the pressure display. Vent pressure to atmosphere before pressing this pushbutton. For an
Absolute Pressure Module, see Zeroing with Absolute Pressure Modules.
Press to read the minimum pressure and current readings since power was turned on orc was pressed.
Press again to read the maximum pressure and current readings since power was turned on or
pressed.
S Use for pressure switch test. See Switch Test.
c
h
10
Press to clear the MIN, MAX, and switch test memories
Press h to freeze the display. The
normal operation.
Pressure CalibratorZeroing with Absolute Pressure Modules
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.
P.S. xx is displayed, where xx is the turn-off time in
minutes. OFF means the power saver is disabled.
2. Press
3. To disable, press
The Calibrator resumes normal operation after 2 seconds.
h to decrease or c to increase the turn-off
time.
h until the display shows OFF.
Zeroing with Absolute Pressure Modules
For zeroing, adjust the Calibrator to read a known
pressure. This can be barometric pressure, if it is
accurately known. An accurate pressure standard can also
apply a pressure within range for any Absolute Pressure
Module. Adjust the Calibrator reading as follows:
Rotate forward (clockwise) for pressure,
backward (counter-clockwise) for
vacuum.
Rotate fully backward (counterclockwise) to release all pressure or
vacuum. (Rotate slightly for partial
release.) Rotate fully forward (clockwise)
to close valve.
Fine
Adjustment
Knob
Internal
Pump
Rotate either direction for precise
adjustment of applied pressure or
vacuum. Full rotation is about 30 turns.
Increase pressure on the inward stroke.
In vacuum mode, decrease pressure on
the outward stroke.
To calibrate a P/I (pressure to current) transmitter, apply a
pressure to the transmitter and measure the transmitter’s
current loop output. Pressure can be applied with the
Calibrator’s internal pump or with an external pump.
XW Warning
To avoid a violent release of pressure or vacuum,
always depressurize the system slowly using the
pressure/vacuum release control before detaching
any pressure line.
When measuring the pressure of potentially
hazardous gases, care must be taken to
minimize the possibility of leakage:
•Confirm that all pressure connections are
properly sealed.
•Confirm that the Pressure/Vacuum
Release Control is in the closed position
(fully clockwise) and the
Pressure/Vacuum switch is in the +
position (fully clockwise).
•If the Calibrator has been dropped or
subjected to rough handling, remove the
Calibrator to a safe area and check for
leaks to confirm the integrity of the
internal pneumatic components.
Using the Internal Pump
The internal pump can provide 30 psi (2.0685 bar) for
Model 718Ex 30G, 100 psi (6.895 bar) for Model 718Ex
100G, or 300 psi (20.68 bar) for Model 718Ex 300G.
The preferred use for the internal pump is shown in Figure
4, where the Calibrator displays pressure measured with
the internal sensor and provided by the internal pump.
The internal pump can also be used with certain Fluke
700PEx Series Pressure Modules. In this case, pressure
measured by the pressure module is displayed by the
Calibrator. Appropriate pressure modules for each
Calibrator model are identified in Table 4. Figure 5 shows
the internal pump being used with a pressure module.
XW Warning
If both a pressure module and the internal
sensor are connected, the Calibrator displays
ONLY the pressure module measurement.
To use the Calibrator’s internal pump, refer to Figure 3 and
perform the following steps:
1. Depressurize the line before connecting the
Calibrator.
2. Connect the pressure transmitter under test to the
Calibrator internal sensor as shown in Figure 4 (for
internal pressure sensor measurements) or Figure 5
(for pressure module measurements.)
Note
To avoid leaks, use Teflon tape or similar sealant
on all pressure connections.
3. Make sure the pressure/vacuum switch on the
Calibrator is in the desired position. Forward
(clockwise) is for pressure; backward (counterclockwise) is for vacuum.
4. Turn the pressure/vacuum release control backward
(counter-clockwise) to vent pressure/vacuum from the
pump.
5. Press Zto zero the pressure display.
6. Turn the fine adjustment knob to mid-range.
7. Turn the pressure/vacuum release control forward
(clockwise) to close the release valve.
8. Work the pump handle in and out to apply
incrementally larger pressure/vacuum changes.
Shorten the stroke to apply smaller increments of
pressure/vacuum change.
9. To make very small pressure/vacuum changes, use
the fine adjustment knob.
Note
This knob adjusts a small internal reservoir to
vary the total volume. With larger external
pressure/vacuum volumes, this control will adjust
pressure or vacuum within a smaller range.
10. Depressurize the system before disconnecting the
pressure line.
To avoid damage to the Calibrator and possible
release of pressure, do not connect the internal
sensor to an external pressure source that
exceeds 30 psi for Model 718Ex 30G, 100 psi for
Model 718Ex 100G, or 300 psi for Model 718Ex
300G.
To develop higher pressure or vacuum, use an external
pump. Use a Fluke 700PEx Pressure Module connected to
the pressure module input on the Calibrator. Pressure
modules are listed in Table 4. Make overall connections as
shown in Figure 6.
Refer to setup and operating instructions included with the
pressure module and pump.
If inappropriate units are selected, the output of Fluke
700PEx pressure modules can cause the Calibrator
display to overflow (OL), or display values that are too low
to be read. Refer to Table 5 for appropriate unit and range
compatibility.
1. Using a small screwdriver, remove the two valve
retention caps located in the oval-shaped opening on
the back side of the Calibrator.
2. Gently remove the spring and o-ring assembly.
3. Set aside the valve assemblies in a safe area and
clean out the valve body using a cotton swab soaked
in IPA (isopropyl alcohol).
4. Repeat this process several times using a new cotton
swab each time until there is no remaining residue.
5. Pump the unit several times and check again for
residue.
6. Clean the o-ring assembly and the o-ring on the
retention caps with IPA and inspect the o-rings closely
for any cuts, nicks, or wear. Replace if needed.
7. Inspect the springs for wear or loss of tension. They
should be approximately 8.6 mm long in the relaxed
state. If they are shorter than that, they may not allow
the o-ring to seat properly. Replace if needed.
8. Once all parts have been cleaned and inspected,
reinstall the o-ring and spring assemblies into the
valve body.
9. Reinstall the retention caps and gently tighten the
cap.
10. Seal the output of the Calibrator and pump up the unit
to at least 50 % its rated pressure.
11. Release the pressure and repeat several times to
ensure that the o-rings seat properly.
The Calibrator is now ready to use.
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.
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
Calibrator will display CLOSE instead of a mA
measurement.
4. Apply pressure with the pump slowly until the switch
opens.
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
switch opened, for when it closed, and for the
deadband.
7. Hold
press
to enter pressure switch test mode. The
S
Note
S to read the pressure values for when the
Sfor three seconds to exit the switch test or
c to reset the switch test.
Maintenance
XW Warning
To avoid possible electric shock, personal
injury, or sudden release of pressure, review
Safety Information before proceeding.
For maintenance procedures not described in this manual,
or if the Calibrator needs repair, contact a Fluke Service
Center. See Contacting Fluke.
In Case of Difficulty
•After removing the Calibrator from the Ex-hazardous
area, check the battery, test leads, pressure module,
and pressure tubing. Follow replacement and
connection instructions properly.
•Review this manual and control drawing to make sure
the Calibrator is used correctly.
If the Calibrator needs repair, and the Calibrator is under
warranty, see the warranty statement for terms. If the
warranty has lapsed, the Calibrator can be repaired and
returned for a fixed fee.
Periodically wipe the case with a damp cloth; do not use
abrasives or solvents.
Calibration
Fluke recommends that the Calibrator be calibrated once
yearly to ensure that it performs according to its
specifications. A calibration manual is available.
Call 1-800-526-4731 from the U.S.A. and Canada. In other
countries, contact a Fluke Service Center.
Replacing the Battery
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 B appears.
Specifications are based on a one year calibration cycle
and apply for ambient temperature from +18 °C to +28 °C
unless stated otherwise. Counts are the number of
increments or decrements of the least significant digit.
Pressure Sensor Input
Max Non-
Model Range Accuracy
30G
-12 to 30 psi
(-83 to 207 kPa)
100G
300G
-12 to 100 psi
(-83 to 690 kPa)
-12 to 300 psi
±0.05 %
of range
(-83 to 2068 kPa)
Temperature coefficient: 0.01 % of range per °C for temperature
ranges -10
Manufactured by Martel Electronics Inc., 1F Commons Drive, Londonderry, NH USA
Additional Safety Information: Complies with CAN/CSA C22.2 No. 1010.2:1995. Complies with ANSI/ISA S82.01-1995.
Complies with IEC 61010-1-95 CAT I, 30 V
Entity Parameters:
Vo, Uo Io Po
7.14 V 1.09 mA 1.9 mW 13.5 μF 240 μF 1000 μF 1.0 H 3.0 H 8.0 H
Kema 04ATEX1061 X
Class I Div. 1 Groups A-D T4
AEx ia IIC T4
Vi, Ui Ii Pi Ci Li
30 V 250 mA 1.88 W 0 μF 0 mH
Co Lo
IIC IIB IIA IIC IIB IIA
Power requirements: See Approved Batteries.
Size: 66 mm H x 94 mm W x 216 mm L (2.60 in H x 3.70 in W x 8.5 in L)