Fluke 750P Operating Manual

750P/750R

Pressure Modules

Instruction Sheet

Introduction

The Fluke 750P/750R Series Pressure Modules (the Product)
let you measure pressure with a wide range of Fluke
calibrators. These calibrators include but are not limited to the:

● 701 and 702 Documenting Process Calibrator

● 717 Series Pressure Calibrators

● 718 Series Pressure Calibrators

● 719 Portable Pressure Calibrator

● 719Pro Pressure Calibrator

● 721 Pressure Calibrator

● 725 Multifunction Process Calibrator

● 726 Multifunction Process Calibrator

● 741B, 743B, 744 Documenting Process Calibrator

● 753, 754 Documenting Process Calibrator

● 3130 Portable Pneumatic Pressure Calibrator

● 525B Temperature/Pressure Calibrator

● 7526A Precision Process Calibrator

● 5520A and 5522A Multi-Product Calibrator

While the 750P provides basic pressure measurement
with various Fluke calibrators, the 750R provides similar
functionality with reference-grade accuracy. However on
certain calibrators with limited display resolution this may
impair the precision of pressure measurement. See Pressure
Module Ranges chart for more information.

The Product measures pressure with an internal
microprocessor compensated sensor. It receives power from
and sends digital information to the Fluke calibrator.

PN 4387748 December 2013

© 2013 Fluke Corporation. Product specications are subject to change

without notice. Printed in USA. All rights reserved.

Gage pressure modules have one pressure tting and

measure pressure with respect to atmospheric pressure.

Differential pressure modules have two pressure ttings and

measure the difference between the applied pressure on the

high tting versus the low tting. A differential pressure module
functions like a gage module when the low tting is open. The

absolute pressure modules measure pressure with respect to
an absolute vacuum. The vacuum pressure modules measure
negative pressure.

See the Users Manual for your specic Fluke calibrator for

operation instructions. Differential and Gage models are
shown in Figure 1.

Low

Differential

RANGE

700

PRESSURE MODULE

P

04

15 PSID/G

1 bar100 kPa

High

Gage

RANGE

700

PRESSURE MODULE

P

06

100 PSIG

7 bar700 kPa

hhb001.jpg

Figure 1. Differential and Gage Pressure Modules

Safety Information

A Warning identies conditions and procedures that are
dangerous to the user. A Caution identies conditions and

procedures that can cause damage to the Product or the
equipment under test.

 Warning

To avoid injury due to the release of high-pressure uid:

● Use only adapters and ttings rated to withstand the
appropriate pressure. Ensure that all adapters and

ttings are securely connected.

Never exceed the specied BURST PRESSURE for

●

the product.

● To avoid a violent release of pressure in a pressurized
system, shut off the isolation valve and slowly bleed
off the pressure before you attach or remove the

pressure module from the pressure line.

Mechanical Damage Prevention

Caution

To avoid Product damage, never apply more than 10 ft­lbs of torque between the pressure module ttings or
between the ttings and the body of the module. Always
apply appropriate torque between the pressure module
tting and connecting ttings or adapters.

Over Pressure Damage Prevention

Caution

To avoid Product damage:

● Use the Product only with specied media as shown
on the Product label to avoid Product damage from
corrosion.

● To avoid product damage do not apply pressure in
excess of 120 % of the specied upper limit.

Figure 2 shows correct and incorrect ways to use a wrench to

apply torque to the pressure module tting.

RANGE

100 kPa

hhb002.eps

Figure 2. Applying Torque

Table 1. Symbols

Symbol Meaning









f



Risk of Danger. Important. See Manual.

Conforms to European Union directives.

Conforms to relevant North American Safety
Standards.

Conforms to relevant South Korean EMC
Standards.

Pressure (found on Fluke calibrators)

Conforms to relevant Australian EMC
requirements.

This product complies with the WEEE
Directive (2002/96/EC) marking

requirements. The afxed label indicates

that you must not discard this electrical/
electronic product in domestic household



waste. Product Category: With reference to
the equipment types in the WEEE Directive

Annex I, this product is classed as category

9 “Monitoring and Control Instrumentation”
product. Do not dispose of this product as
unsorted municipal waste. Go to Fluke’s
website for recycling information.

Recommended Measurement
Technique

For best results, before you zero the Product or take
measurements, pressurize the Product to full scale and then
vent to zero pressure (atmosphere).

Note

Low-range pressure modules may be sensitive to gravity.

For best results, pressure modules 30 psi and below should
be held at the same physical orientation from the time they
are zeroed until the measurement is complete.

Box Contents

The Product package should contain the listed items below. If
it does not, contact Fluke immediately. See “Contact Fluke”.

● Pressure module

● 1/8 NPT male to 1/4 NPT male adapter

● 1/8 NPT male to 1/4 BSP male adapter

● 1/8 NPT male to M20 male adapter

● O-RING,(-111) CAST URETHANE

● Certicate of calibration

● User documentation packet

Pressure Calibration Kit

The optional Fluke 700PCK (Pressure Calibration Kit)
accessory lets you calibrate the pressure modules at
your facility with your precision pressure standards. A
pressure calibrator or dead weight tester that is at least
4X more accurate than the pressure module under test is
recommended.

Performance Test

If you need to check that the pressure module meets its

accuracy specication, use a dead weight tester or suitable

pressure calibrator. The accuracy of the dead weight tester

or pressure calibrator should be signicantly better than the
Product pressure specication. Proceed as follows to verify
that a pressure module is operating within specication:

1. Read the pressure value with no externally applied
pressure to make sure the 0 % of scale is correct. When
reading the pressure, press the ZERO key to remove
any zero offset.

2. Connect the pressure module to a dead weight tester.

3. Set the dead weight tester to 20 % of the pressure
module’s full scale value.

4. Make sure the reading agrees with the dead weight

tester value within the specications.

5. Set the dead weight tester to 40, 60, 80, and 100 % of
full scale and compare the respective readings.

Specications

Mechanical Specications

Size (H X W X L) .......45 mm X 94 mm X 110 mm

. . . . . . . . . . . . . . . . . . . . .(1.77 in X 3.70 in X 4.33 in)

Weight . ..............292 g (10.3 oz)

Physical Interface .......Serial Connector, Pressure Port

Environmental Specications

Operating Temperature...-10 °C to +50 °C (14 °F to 122 °F)

Storage Temperature ....-20 °C to +60 °C (-4 °F to 140 °C)

Operating Humidity......Non condensing (<10 °C) (<50 °F)

90 % RH (10 °C to 30 °C) (50 °F to
86 °F)
75 % RH (30 °C to 40 °C) (86 °F to
104 °F)
45 % RH (40 °C to 50 °C) (104 °F
to 122 °C)

Operating Altitude ......2000 m (6,561 ft)

Storage Altitude ........12000 m (45,700 ft)

IP Rating..............IP 52

Compliance

Agency Approvals.......

CE...................IEC 61010-1

EMI, RFI, EMC .........EN61326-1

Protection Class II
Pollution Degree 2

Electromagnetic Compatibility
Applies to use in Korea only.
Class A equipment (Industrial
Broadcasting & Communication
Equipment)
[1] This Product meets
requirements for industrial (Class A)
electromagnetic wave equipment
and the seller or user should
take notice of it. This equipment
is intended for use in business
environments and is not to be used
in homes.

[1]

How to 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: [phone]

● Japan: [phone]

● Singapore: [phone]

● Anywhere in the world: [phone]

Or, visit Fluke’s website at www.uke.com.
To register your product, visit http://register.uke.com.
To view, print, or download the latest manuals or manual
supplement,
visit http://us.uke.com/usen/support/manuals.

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 Fluke Europe B.V.

P.O. Box 9090 P.O. Box 1186

Everett, WA 98206-9090 5602 BD Eindhoven
U.S.A. The Netherlands

11/99