WIKA CPH7650 Specifications

Portable pressure calibrator
Model CPH7650

Applications

■

Calibration service companies and service industry

■

Measurement and control laboratories

■

Quality assurance

Special features

■

Measurement and electrical pressure generation
at the touch of a button with integrated pump, from

-0.85 ... +20 bar (-12 ... 290 psi)

■

Accuracy: 0.025 % FS (incl. calibration certicate)

■

Generation/measurement of 4 ... 20 mA, and DC 24 V
voltage supply to power transmitters

■

Robust case design, IP67

Calibration technology

WIKA data sheet CT 17.02

Description

General information

The portable pressure calibrator model CPH7650 is a
compact, portable pressure calibrator, which has been
designed for mobile use as well as for stationary workshop
and laboratory testing. An integrated electrical pump enables
you to generate pressures up to 20 bar (300 psi) and an
integrated electrical module also enables you to supply
transmitters or sensors with a current of max. 30 mA (voltage
(idling) = DC 24 V), in addition to the traditional measurement
of current and voltage signals.

Accuracy

The exchangeable model CPT6000 reference sensor

oers an accuracy of 0.025 % of span. The temperature

compensation of the built-in sensor safeguards the accuracy

for applications in the eld. Readings can be displayed in one

of 13 standard units.

Portable pressure calibrator, model CPH7650

Features

With the portable pressure calibrator, not only are accurate
pressure measurements possible, but also exact current and
voltage measurements, as well as a DC 24 V voltage supply
for test items are enabled. Pressure values and electrical
measured values are simultaneously shown in the display.
The calibrator is integrated into a robust, as well as dust
and waterproof transport case. Thus the mobile pressure
calibrator is particularly suited to use in harsh industrial
environments.
With the built-in NiMH rechargeable battery, a battery
life of approximately 50 hours or 125 pump cycles up to
20 bar (290 psi) is guaranteed. The external universal
power supply is designed for an operating voltage of
AC 100 ... 240 V.

∙ 01/2018

Data sheets showing similar products:
ProcessCalibrator; model CPH6000; see data sheet CT 15.01
Precision hand-held pressure indicator; model CPH6400; see data sheet CT 14.01
Hand-held pressure indicator; model CPH6300; see data sheet CT 12.01
Calibration software; WIKA-Cal; see data sheet CT 95.10

Page 1 of 8WIKA data sheet CT 17.02

Software

The WIKA-Cal calibration software is available for online
calibrations in connection with a PC. Using this software, the
data is automatically transferred into a printable calibration

certicate. Furthermore, WIKA-Cal also oers, over and

Certied accuracy

For the CPH7650, the accuracy is certied by a factory
calibration certicate which accompanies the instrument. On
request, we can provide a DKD/DAkkS calibration certicate

for this instrument.
above PC-supported calibration, the management of the
calibration and instrument data in an SQL database. A USB
interface is available for the data transfer.

Specications

Model CPH7650

Measuring ranges

Pressure

Gauge pressure -1 … +20 bar, -1 … +10 bar, 0 … 20 bar, 0 … 10 bar

Absolute pressure 0 … 10 bar abs., 0 … 20 bar abs.

Overpressure limit

Accuracy 0.025 % FS

Resolution 5-digit

Temperature compensation 15 … 35 °C (59 ... 95 °F)

Temperature coecient 0.002 % of span/°C outside of 15 ... 35 °C (59 ... 95 °F)

Current

Measuring range 0 … 24 mA (max. load 1,000 Ω)

Resolution 1 µA

Accuracy 0.015 % of reading ±2 µA (simulation and measurement)

Voltage

Measuring range DC 0 … 30 V

Resolution 1 mV

Accuracy 0.015 % of reading ±2 mV (measurement)

1) Via exchangeable model CPT6000 reference pressure sensors

2) The electrical pump can generate -0.85 … +20 bar (-12 … 290 psi).

1)

2)

3 times

Base instrument

Pressure supply -0.85 ... +20 bar (-12 ... 290 psi), via integrated electric pump

Pressure connection for test item G ½" female thread

Permissible media For dry, clean and non-aggressive gases

Output

Voltage supply DC 24 V

Power supply

Battery type NiMH rechargeable battery

Permissible ambient conditions

Operating temperature -10 … +50 °C (14 ... 122 °F)

Storage temperature -20 … +60 °C (-4 ... +140 °F)

Relative humidity 35 ... 85 % r. h. (non-condensing)

Page 2 of 8 WIKA data sheet CT 17.02 ∙ 01/2018

Base instrument

Communication

Interface USB via special interface cable

Case

Case NK-7TM resin

Front panel Aluminium

Ingress protection IP67 (case closed)

IP40 (case opened)

Dimensions 387.4 x 304.8 x 177.8 mm (15.25 x 12 x 7 in)

Weight approx. 7 kg (15.5 lbs.)

Certicates

Certicate

Calibration Standard: 3.1 calibration certicate per DIN EN 10204

Option: DKD/DAkkS calibration certicate

Recommended recalibration interval 1 year (dependent on conditions of use)

Approvals and certicates, see website

Available pressure range and resolution

Pressure range and factors

Gauge pressure -1 ... +20 bar (-14.5 ... 290 psi)

Overpressure limit 40 bar (580 psi)

Unit Conversion factor

psi 1 300.00

bar 0.06894757 20.684

mbar 68.94757 20,684

kPa 6.894757 2,068.4

MPa 0.00689476 2.0684

kg/cm² 0.07030697 21.092

O (4 °C) 70.3089 21,093

cmH

2

O (20 °C) 70.4336 21,130

cmH

2

O (4 °C) 27.68067 8,304.2

inH

2

O (20 °C) 27.72977 8,318.9

inH

2

O (60 °F) 27.70759 8,312.3

inH

2

mmHg (0 °C) 51.71508 15,515

inHg (0 °C) 2.03602 610.81

3) Electrical pump: -0.85 … +20 bar (-12 … 290 psi)

WIKA data sheet CT 17.02 ∙ 01/2018 Page 3 of 8

104 (4,11)

158 (6,22)

390 (15,36)

172 (6,76)

Dimensions in mm (in)

308 (12,13)

Page 4 of 8 WIKA data sheet CT 17.02 ∙ 01/2018

Features

Pressure supply

The CPH7650, through an integrated electrical pump,
enables the provision of -0.85 ... +20 bar.
With this, the operator can supply the test item to be
calibrated with pressure on-site and does not need any
separate pressure supply.

Current and voltage

In addition to pressure, the portable pressure calibrator
also measures and simulates 4 ... 20 mA current loop
signals, can measure up to DC 30 V and features an internal
DC 24 V voltage supply to power the transmitter being
calibrated. The DC 24 V voltage supply is switchable for
transmitters with mA as well as V output signal.

Display

It can display two calibration values simultaneously. This
means that the external reference sensor and electrical test
item values (mA or V) can be displayed simultaneously. The
instrument has a large graphic LC display with backlighting.

Pressure ranges

The CPH7650 can be tted with dierent reference pressure

sensors, so that the pressure calibrator is suitable for the

calibration of test items with dierent pressure ranges up to

20 bar.

Each pressure range can be accurately generated with the
integrated electric pump at the touch of a button. The ne

adjustment is made with the integrated volume adjuster.

Functions

The CPH7650 has a complete range of useful functions.
Switch tests can be carried out and recorded. The deviation
of the test item is directly calculated and indicated on the

display. A damping function is available. Up to ve frequently

used instrument settings can be stored and retrieved by
pressing a button.

Robustness

The CPH7650 consists of a calibrator, which is built into a
rugged service case. With this design, the portable pressure
calibrator is suited to extremely harsh operating conditions.

WIKA data sheet CT 17.02 ∙ 01/2018 Page 5 of 8

Dirt trap

The CPH7650 should only be used with dry and clean test
items. Soiling of the integrated pump, for example, through
contaminated test items, can lead to faults on the pump or
require the pump to be cleaned.

By using the dirt trap specically developed for the CPH7650,

contamination of the integrated pump can be prevented.

Using the dirt trap

The dirt trap is attached, hand-tight, at the pressure
connection of the calibrator. Sealing is achieved via the

O-ring tted on the G ½" male thread of the dirt trap. The

maximum operating pressure is limited to 25 bar.

The test item is mounted to the upper connection of the dirt
trap, using a suitable sealing method.

As soon as moisture or dirt accumulates in the transparent
chamber, the liquid should be drained via a drain valve and
the chamber should be cleaned by subsequent dismantling.

Once the upper dirt trap connection has been unscrewed, the
transparent acrylic chamber and the O-rings can be removed
and cleaned with a clean cloth.

Input

3

Output to calibrator

4

⅞" or 23 mm spanner

5

Dirt trap

5

4

Page 6 of 8 WIKA data sheet CT 17.02 ∙ 01/2018

3

WIKA-Cal calibration software

Easy and fast creation of a high-quality calibration certicate

The WIKA-Cal calibration software is used for generating

calibration certicates or logger protocols for pressure

measuring instruments and is available as a demo version for
a cost-free download.
A template helps the user and guides him through the
creation process of a document.
In order to switch from the demo version to a full version of
the respective template, a USB stick with the template must
be purchased.
The pre-installed demo version automatically changes to
the selected full version when the USB stick is inserted and
remains available as long as the USB stick is connected to
the computer.

■

Creation of calibration certicates for mechanical and

electronic pressure measuring instruments

■

A calibration assistant guides you through the calibration

■

Automatic generation of the calibration steps

■

Generation of 3.1 certicates per DIN EN 10204

■

Creation of logger protocols

■

User-friendly interface

■

Languages: German, English, Italian and more due with

software updates

For further information see data sheet CT 95.10

Calibration certicates can be created with the Cal-Template and logger protocols can be created with the Log-Template.

Cal Demo

Generation of calibration certicates limited to 2 measuring points, with

automatic initiation of pressures via a pressure controller.

Cal Light

Generation of calibration certicates with no limitations on measuring

points, without automatic initiation of pressures via a pressure
controller.

Calibration certificate

Kalibrierzeugnis

General

Allgemein

Calibration certificate

Kalibrierschein

Customer Demo customer

Kunde

Demo street
DE-12345 Demo city

Customer order No.

Kundenbestellnummer

Order date

Bestelldatum

Date of calibration 01/02/2017

Datum der Kalibrierung

Operator Demo User

Bearbeiter

Environmental conditions

Umgebungsbedingungen

Temperature (20,0 ± 0,1) °C

Temperatur

Atmospheric pressure (1013,0 ± 0,1) hPa

Atmosphärischer Luftdruck

Rel. humidity (40 ± 1) %

Rel. Luftfeuchte

Measurement conditions

Messbedingungen

Working standard (WS) Pressure controller

Gebrauchsnormal (GN) Druckcontroller

Model Demo CPC

Typ

Calibration mark Demo 12345

Kalibrierzeichen

Scale range (0 ... 10) bar g

Anzeigebereich

Accuracy 0.02 % FS

Genauigkeit

Demo laboratory

Tel.: [phone]

Demo street 123

Fax: [phone]

12345 Demo city

E-Mail: [e-mail]

Demo country

www.demo.com

Certificate No. 00000122

Zeugnis-Nr.

Device under test (DUT)

Kalibriergegenstand (KG)

Electrical gauge

Elektrisches Druckmessgerät

Model D-10

Typ

Serial number demo1234

Seriennummer

Scale range (0 ... 10) bar g

Anzeigebereich

Accuracy 0.05 % FS

Genauigkeit

Resolution (scale division) 0.0001 bar

Auflösung (Skalenwert)

Measuring point No. demo tag

Messstellen-Nr

Place of calibration

Ort der Kalibrierung

g = (9.80946 ± 0.01) m/s²

Demo place

Musterort

Calibration certificate

Kalibrierzeugnis

Measurement results

Messergebnisse

Reference value WS Reading DUT

Statement of compliance

Konformitätsaussage

Object keeps the specifications!

Der Kalibriergegenstand hält die Herstellerspezifikationen ein!

Demo laboratory

Page 1 / 2

Demo street 123

Seite

12345 Demo city
Demo country

Referenzwert GN Ablesung KG

bar bar

↑ ↓

0.00000 0.0000 0.0010

10.00000 10.0010 10.0020

Tel.: [phone]
Fax: [phone]
E-Mail: [e-mail]
www.demo.com

Certificate No. 00000122

Zeugnis-Nr.

Log Demo

Creation of data logger test reports, limited to 5 measured values.

Log

Creation of data logger test reports without limiting the measured
values.

Page 2 / 2

Seite

WIKA data sheet CT 17.02 ∙ 01/2018 Page 7 of 8

Scope of delivery

■

Portable pressure calibrator model CPH7650

■

Operating instructions

■

Test cables

■

Battery charger

■

3.1 calibration certicate per DIN EN 10204

Option

■

DKD/DAkkS certied accuracy

Accessories

Connection adapters

■

Various pressure adapters

Software

■

WIKA-Cal calibration software

Ordering information

CPH7650 / Reference sensor / Unit / Pressure type / Measuring range / Accuracy / Type of certicate / Electrical module /

Connection adapter / Further approvals / Additional ordering information

© 01/2018 WIKA Alexander Wiegand SE & Co. KG, all rights reserved.

The specications given in this document represent the state of engineering at the time of publishing.
We reserve the right to make modications to the specications and materials.

Page 8 of 8 WIKA data sheet CT 17.02 ∙ 01/2018

WIKA Alexander Wiegand SE & Co. KG

Alexander-Wiegand-Straße 30
63911 Klingenberg/Germany
Tel. [phone]
Fax [phone]
[e-mail]
www.wika.com

01/2018 EN