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