WIKA CPH7650 Operating Manual

Operating instructions Betriebsanleitung

Portable pressure calibrator, model CPH7650

Tragbarer Druckkalibrator, Typ CPH7650

Portable pressure calibrator, model CPH7650

Operating instructions model CPH7650 Page 3 - 58

Betriebsanleitung Typ CPH7650 Seite 59 - 113

Further languages can be found at www.wika.com.

WIKA

is a registered trademark in various countries.

WIKA

ist eine geschützte Marke in verschiedenen Ländern.

Prior to starting any work, read the operating instructions! Keep for later use!

Vor Beginn aller Arbeiten Betriebsanleitung lesen! Zum späteren Gebrauch aufbewahren!

WIKA operating instructions, model CPH7650

14261987.01 03/2018 EN/DE

Contents

1. General information 5

2. Safety 6

2.1 Intended use . . . . . . . . . . . . . . . . . . . . . . 7

2.2 Personnel qualification . . . . . . . . . . . . . . . . . . . 8

2.3 Special hazards . . . . . . . . . . . . . . . . . . . . . 8

2.4 Use of Lithium-Ion rechargeable batteries . . . . . . . . . . . .10

2.5 Labelling, safety marks . . . . . . . . . . . . . . . . . . .12

3. Specifications 13

4. Design and function 15

4.1 Description . . . . . . . . . . . . . . . . . . . . . . . 15

4.2 Front . . . . . . . . . . . . . . . . . . . . . . . . .16

4.3 Scope of delivery . . . . . . . . . . . . . . . . . . . . .17

4.4 Voltage supply . . . . . . . . . . . . . . . . . . . . . .17

4.5 User interface . . . . . . . . . . . . . . . . . . . . . . 18

4.5.1 Requirements for test assemblies with the CPH7650 . . . . . . . 19

4.5.2 Important instrument settings for calibration using calibration mode . . 19

4.5.3 Zero point setting and offset correction . . . . . . . . . . . .20

4.5.4 Reference pressure sensor CPT6000 . . . . . . . . . . . . 20

5. Transport, packaging and storage 22

5.1 Transport. . . . . . . . . . . . . . . . . . . . . . . . 22

5.2 Packaging . . . . . . . . . . . . . . . . . . . . . . . 22

5.3 Storage . . . . . . . . . . . . . . . . . . . . . . . . 22

6. Commissioning, operation 23

6.1 Menu structure (operating modes) . . . . . . . . . . . . . . . 24

6.2 Explanation of the display . . . . . . . . . . . . . . . . . . 25

6.2.1 Instrument status messages shortly after switching on the CPH7650 . .25

6.2.2 Switching the pressure calibrator off . . . . . . . . . . . . .26

6.2.3 Display contents of the operating modes . . . . . . . . . . . 26

6.2.4 Content of the SETUP menu . . . . . . . . . . . . . . .29

6.3 Operating modes . . . . . . . . . . . . . . . . . . . . .32

6.3.1 MEASURING mode . . . . . . . . . . . . . . . . . . 32

6.3.2 MEASURING mode (with test item) . . . . . . . . . . . . . 34

6.3.3 Mode CALIBRATION . . . . . . . . . . . . . . . . . . 36

6.3.4 CALIBRATION mode (preparing the test points of a calibration). . . . 38

6.3.5 CALIBRATION mode (calibration of a pressure transmitter) . . . . . 41

6.3.6 CALIBRATION mode (calibration of a pressure gauge) . . . . . . 42

6.3.7 SWITCH TEST mode . . . . . . . . . . . . . . . . . . 43

6.4 SETUP additional menu items . . . . . . . . . . . . . . . . 45

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3WIKA operating instructions, model CPH7650

Contents

6.4.1 SETUP additional menu items: Functions . . . . . . . . . . . 45

6.4.2 SETUP additional menu items: CPH info . . . . . . . . . . . 46

6.4.3 SETUP additional menu items: Reference sensor . . . . . . . . 47

6.4.4 SETUP additional menu items: Reference sensor list . . . . . . . 48

6.4.5 SETUP additional menu items: CPH configuration . . . . . . . .49

6.4.6 SETUP additional menu items: Interface . . . . . . . . . . . 50

6.4.7 SETUP additional menu items: CLEAR CalProg . . . . . . . . .50

6.5 Connection of the model CPT6000 reference pressure sensor . . . . . 51

6.6 Voltage supply . . . . . . . . . . . . . . . . . . . . . .51

6.7 Charging/discharging the Lithium-Ion rechargeable batteries . . . . . .52

6.8 Pressure measurement . . . . . . . . . . . . . . . . . . .53

6.9 Measuring and sourcing current (4 ... 20 mA) . . . . . . . . . . . 53

7. Maintenance, cleaning and recalibration 54

7.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . 54

7.2 Cleaning . . . . . . . . . . . . . . . . . . . . . . . .54

7.3 Recalibration . . . . . . . . . . . . . . . . . . . . . .54

8. Faults 55

9. Dismounting, return and disposal 56

9.1 Dismounting . . . . . . . . . . . . . . . . . . . . . . 56

9.2 Return. . . . . . . . . . . . . . . . . . . . . . . . . 56

9.3 Disposal . . . . . . . . . . . . . . . . . . . . . . . .56

10. Accessories 57

Declarations of conformity can be found online at www.wika.com.

4 WIKA operating instructions, model CPH7650

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1. General information

■

The portable pressure calibrator described in the operating instructions has been manufactured using state-of-the-art technology. All components are subject to stringent quality and environmental criteria during production. Our management systems are certified to ISO 9001 and ISO 14001.

■

These operating instructions contain important information on handling the instrument. Working safely requires that all safety instructions and work instructions are observed.

■

Observe the relevant local accident prevention regulations and general safety regulations for the instrument's range of use.

■

The operating instructions are part of the product and must be kept in the immediate vicinity of the instrument and readily accessible to skilled personnel at any time.

■

Skilled personnel must have carefully read and understood the operating instructions prior to beginning any work.

■

The manufacturer's liability is void in the case of any damage caused by using the product contrary to its intended use, non-compliance with these operating instructions, assignment of insufficiently qualified skilled personnel or unauthorised modifications to the instrument.

■

The general terms and conditions contained in the sales documentation shall apply.

■

Subject to technical modifications.

■

Factory calibrations / DKD/DAkkS calibrations are carried out in accordance with international standards.

■

Further information:

- Internet address: www.wika.de / www.wika.com

- Relevant data sheet: CT 17.02

- Application consultant:

Tel.: +49 9372 132-9986 Fax: +49 9372 132-8767 info@wika.com

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5WIKA operating instructions, model CPH7650

1. General information / 2. Safety

Explanation of symbols

WARNING!

... indicates a potentially dangerous situation that can result in serious injury or death, if not avoided.

CAUTION!

... indicates a potentially dangerous situation that can result in light injuries or damage to property or the environment, if not avoided.

Information

... points out useful tips, recommendations and information for efficient and trouble-free operation.

DANGER!

... identifies hazards caused by electrical power. Should the safety instructions not be observed, there is a risk of serious or fatal injury.

2. Safety

WARNING!

Before installation, commissioning and operation, ensure that the appropriate reference pressure sensor has been selected in terms of measuring range, design and specific measuring conditions. Non-observance can result in serious injury and/or damage to the equipment.

Further important safety instructions can be found in the individual chapters of these operating instructions.

6 WIKA operating instructions, model CPH7650

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2. Safety

2.1 Intended use

This portable pressure calibrator serves as a calibration instrument for the widest variety of pressure measuring instruments and has been designed for mobile use as well as for stationary workshop and laboratory testing. Through the combination of the integrated electrical pump and the electrical modules, in addition to the traditional measurement of current and voltage signals it also enables you to supply transmitters or sensors with a max. of 30 mA (voltage (idling) = DC 24 V). The pressure calibrator can be used to carry out and document a complete calibration process.

WARNING!

■

Only use model CPT6000 reference pressure sensors!

■

Using other sensors could damage both the pressure calibrator and the reference pressure sensor.

■

To change the sensor, switch off the pressure calibrator and make sure the system is vented. Before switching the instrument on, connect the sensor, otherwise it may not be correctly identified by the instrument.

■

When the CPH7650 is switched on, the CPT6000 reference pressure sensor must not be under pressure, but rather should be at atmospheric pressure. For overpressure or gauge pressure sensors, there is a pressure compensation vent in the top of the sensor under the plastic fitting. This vent (with integrated diaphragm) must always remain clear!

The instrument has been designed and built solely for the intended use described here, and may only be used accordingly.

The technical specifications contained in these operating instructions must be observed. Improper handling or operation of the instrument outside of its technical specifications requires the instrument to be taken out of service immediately and inspected by an authorised WIKA service engineer.

Handle electronic precision measuring instruments with the required care (protect from humidity, impacts, strong magnetic fields, static electricity and extreme temperatures, do not insert any objects into the instrument or its openings). Plugs and sockets must be protected from contamination.

If the instrument is transported from a cold into a warm environment, the formation of condensation may result in instrument malfunction. Before putting it back into operation, wait for the instrument temperature and the room temperature to equalise.

The manufacturer shall not be liable for claims of any type based on operation contrary to the intended use.

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7WIKA operating instructions, model CPH7650

2. Safety

2.2 Personnel qualification

WARNING!

Skilled personnel

Skilled personnel are understood to be personnel who, based on their technical training, knowledge of measurement and control technology and on their experience and knowledge of country-specific regulations, current standards and directives, are capable of carrying out the work described and independently recognising potential hazards.

Special operating conditions require further appropriate knowledge, e.g. of aggressive media.

2.3 Special hazards

Risk of injury should qualification be insufficient!

Improper handling can result in considerable injury and damage to equipment. The activities described in these operating instructions may only be carried out by skilled personnel who have the qualifications described below.

WARNING!

■

Do not apply a voltage greater than the specified voltage to the instrument (see chapter 3 „Specifications“).

■

Do not apply any external pressure to the CPH7650.

■

Make sure that the test probes never contact a voltage source while the test cables are connected to the current terminals.

■

Do not use the calibrator if it is damaged. Before using the instrument, check that there are no cracks on the case or any missing plastic parts. Pay particular attention to the insulation of the connectors.

■

Select the proper function and correct measuring range for the measurement.

■

Observe the operating parameters in accordance with chapter 3 “Specifications”.

■

Always operate the pressure calibrator within the defined pressure range.

■

To ensure problem-free operation, only operate the instrument on battery power. Only use the power supply unit for charging the instrument's batteries.

■

Inspect the test cables for damaged insulation or exposed metal. Check the continuity of the leads. Damaged test leads should be replaced before using the instrument.

■

When using test probes, keep fingers away from the test probe contacts. Keep your fingers behind the test probes' finger guards.

■

First connect the common lead, and then the live lead. When disconnecting, remove the live test lead first.

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8 WIKA operating instructions, model CPH7650

2. Safety

■

Do not use the instrument if it is not working properly. The instrument protection might be compromised. If in doubt, have the instrument checked.

■

Do not operate the instrument in areas with explosive gases, vapours or dust.

■

When measuring pressure, make sure that the pressure calibrator has been switched to a depressurised state before the reference sensor or the test item is connected or disconnected.

■

Disconnect test leads before changing to another measurement or source function.

■

The switching valve (+/- pressure) should only ever be actuated when in a depressurised state.

WARNING!

■

To avoid false indications, which could lead to possible electric shock or injuries, charge the rechargeable battery as soon as the battery indicator appears.

■

In order to avoid any possible damage to the instrument or the test equipment, use the correct leads, the correct function and the correct range for the measuring application.

DANGER! Danger to life caused by electric current

Upon contact with live parts, there is a direct danger to life.

■

Charging using a defective power supply unit (e.g. short circuit from the mains voltage to the output voltage) can result in life-threatening voltages at the instrument!

■

Only use the power supply unit permitted by WIKA for the model CPH7650 portable pressure calibrator.

■

Only use a charger that is fully functional or undamaged.

The safety of the operator may be endangered if, for example

■

there is visible damage to the instrument.

■

the instrument is no longer working as specified.

■

the instrument has been stored under unsuitable conditions for an extended period of

time. If there is any doubt, please return the instrument to the manufacturer for repair or maintenance.

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9WIKA operating instructions, model CPH7650

2. Safety

2.4 Use of Lithium-Ion rechargeable batteries

WARNING!

Misusing Lithium-Ion batteries can lead to heating, explosion or ignition and result in serious injury. Follow the safety instructions listed below:

■

Do not solder directly to the Lithium-Ion batteries.

■

Do not incinerate or heat the Lithium-Ion batteries.

■

The Lithium-Ion batteries must only ever be connected with the correct polarity.

■

Never connect the positive terminal and the negative terminal of the Lithium-Ion batteries to each other with any metallic object (such as wire).

■

Never carry or store the Lithium-Ion batteries together with necklaces, hairpins, or other metal objects.

WARNING!

■

Lithium-Ion batteries should never be punctured with nails nor hit with a hammer. In addition, Lithium-Ion batteries must never be trodden on or exposed to other strong shocks or vibrations.

■

Lithium-Ion batteries must never come into contact with water or salt water. Moreover, they must never get wet.

WARNING!

Never take the Lithium-Ion battery apart nor alter it in any way. It contains safety and protection devices which, if damaged, may cause it to generate heat, explode or ignite.

WARNING!

Never place the Lithium-Ion batteries close to fires, ovens or other high-temperature locations. Never leave the Lithium-Ion batteries in direct sunshine or use or store them inside cars in hot weather. Doing so may cause the Lithium-Ion batteries to generate heat, explode or ignite. Using the Lithium-Ion batteries in this manner may also result in a loss of performance and a shortened service life.

Never fit the Lithium-Ion batteries into equipment designed to be hermetically sealed. In some cases hydrogen or oxygen may be discharged from the Lithium-Ion batteries, which may result in rupture, fire or explosion.

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2. Safety

WARNING!

The Lithium-Ion batteries must, without fail, no longer be used if, during operation, charging or storing they give off an unusual smell, feel hot, change colour, change shape, or appear abnormal in any other way. Contact your sales partner if any of these problems are observed.

Never put the Lithium-Ion batteries in microwave ovens, high-pressure containers nor on induction cookers.

Should the Lithium-Ion batteries ever leak and the fluid come into contact with the eyes, do not under any circumstances rub the eyes. Rinse the eyes thoroughly with water and seek immediate medical attention. If the eyes are left untreated, damage to the eyes could occur.

CAUTION!

When the Lithium-Ion batteries wear out, insulate the terminals with adhesive tape or similar materials before disposal.

WARNING!

Follow the instructions listed below for charging the Lithium-Ion batteries. Failure to do so may cause the Lithium-Ion batteries to become hot, explode or ignite and result in serious injury.

■

To charge the Lithium-Ion batteries, only ever use the specified WIKA battery charger.

■

Never connect the Lithium-Ion batteries directly to a mains plug or to a car's cigarette lighter.

■

Never leave the Lithium-Ion batteries in or near fire, nor in direct sunlight. If the Lithium-Ion batteries become hot, the built-in safety device is activated and overcharging prevented. Heating the Lithium-Ion batteries can damage the safety device and can thus lead them to heat up further, to cease to work or to ignite.

WARNING!

Never continue to charge the Lithium-Ion batteries if they do not fully recharge within the specified time. Doing so may cause the Lithium-Ion batteries to become hot, explode or ignite.

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11WIKA operating instructions, model CPH7650

2. Safety

2.5 Labelling, safety marks

Product label

6 5 4 3 2

Product name

Date of manufacture (month/year)

Serial number

Output signal, power supply

Input signal

Pressure range

Symbols

Before mounting and commissioning the instrument, ensure you read the operating instructions!

This marking on the instruments indicates that they must not be disposed of in domestic waste. The disposal is carried out by return to the manufacturer or by the corresponding municipal authorities.

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3. Specifications

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 coefficient 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).

3 times

Base instrument

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

Pressure connection for test item

Permissible media For dry, clean and non-aggressive gases

Output

Voltage supply DC 24 V

Power supply

Battery type Lithium-Ion 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)

Communication

Interface USB via special interface cable

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G ½" female thread

13WIKA operating instructions, model CPH7650

3. Specifications

Base instrument

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.)

Certificates

Certificate

Calibration Standard: 3.1 calibration certificate per DIN EN 10204

Option: DKD/DAkkS calibration certificate

Recommended recalibration

1 year (dependent on conditions of use)

interval

Approvals and certificates, 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

O (20 °C) 70.4336 21,130

cmH

O (4 °C) 27.68067 8,304.2

inH

O (20 °C) 27.72977 8,318.9

inH

O (60 °F) 27.70759 8,312.3

inH

mmHg (0 °C) 51.71508 15,515 inHg (0 °C) 2.03602 610.81

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

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14 WIKA operating instructions, model CPH7650

3. Specifications / 4. Design and function

104 (4,11)

158 (6,22)

Dimensions in mm (in)

172 (6,76)

390 (15,36)

308 (12,13)

4. Design and function

4.1 Description

The 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.

The pressure calibrator can be used to carry out and document a complete calibration process. In addition to the features of displaying or measuring and calibration, there is also a switch test. The use of the WIKA-Cal software also allows a complete documentation.

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15WIKA operating instructions, model CPH7650

4. Design and function

4.2 Front

Test item

Overview of the electrical connection

3 4

10111213

Electrical connection to the model CPT6000 reference sensor

Reference sensor CPT6000

Connecion of the power supply unit

WIKA-Cal connection

Fine adjustment / drain valve

Switch for pressure / vacuum

Pump speed controller

Operation

Electrical module

Display

Numeric keypad

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4. Design and function

4.3 Scope of delivery

■

Portable pressure calibrator model CPH7650

■

Operating instructions

■

Test cables

■

Battery charger

■

3.1 calibration certificate per DIN EN 10204

Cross-check scope of delivery with delivery note.

4.4 Voltage supply

Charging the battery

In order to avoid false measurements, charge the battery as soon as the battery indicator is displayed. If the battery has run down too far, the instrument will switch itself off automatically.

Only ever use the power supply unit permitted by WIKA for the model CPH7650 portable pressure calibrator.

To avoid measurement uncertainties, only use the CPH7650 without the mains supply connected. The full pump performance can only be guaranteed with the battery fully charged and without the power supply unit connected.

The instrument should be fully charged before being put into operation. The battery capacity status (charge state in %) is displayed shortly after the instrument is switched on. When the power supply unit is connected, the rechargeable battery will be charged, even if the CPH7650 is switched off.

The typical charging time of the rechargeable battery is < 5 hours.

WARNING!

■

When the power supply unit is no longer being used, the mains plug should be disconnected from the mains socket. Do not leave the rechargeable battery connected to the power supply unit for longer than one day, since overcharging can shorten its service life.

■

Should the rechargeable battery still not be fully charged after 24 hours, contact the manufacturer. When not being used, a fully charged battery will lose its charge over time.

■

Extreme temperatures have an adverse effect on battery charging. As a result, the battery may first need to be either cooled or warmed, as appropriate.

■

When the battery is almost completely discharged, the message “low BAT” appears in the display. To avoid a data loss, the instrument must be charged immediately

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17WIKA operating instructions, model CPH7650

4. Design and function

4.5 User interface

SETUP menu

Selection and entry confirmation

Return to previous level

Clear entry

Input confirmation

Numeric keypad

Switch on via pressing any button Switch off via menu item in main menu

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4. Design and function

4.5.1 Requirements for test assemblies with the CPH7650

■

Before starting any task, the instrument should be switched on briefly to determine that there is sufficient charge in the battery (rechargeable battery capacity in %). The battery capacity is indicated briefly in an instrument status message after switching on (see chapter 6.2.1 “Instrument status messages shortly after switching on the

CPH7650”).

■

Initially, the test assembly must be physically assembled and, if necessary, connected electrically (see chapter 4.5.4.1 “Connection of the model CPT6000 reference pressure sensor”).

■

Before switching the CPH7650 on, ensure that the test assembly is not pressurised (system is vented to atmosphere) and that the equipment is correctly assembled and in the correct mounting position.

■

Only connect test and calibration installations once the system has been depressurised!

Compensation for height differences

If a significant elevation difference exists between the CPT6000 reference pressure sensor and the test item, then the pressure difference, based on a medium column, can be compensated automatically via the menu (see chapter 6.4.5 “SETUP additional menu items: CPH configuration”).

4.5.2 Important instrument settings for calibration using calibration mode

Calibration date

The instrument has an integral real-time clock with date. The current date of a calibration is stated later in the calibration certificate. Before starting a calibration, you must ensure that the internal date of the CPH7650 is correct (see chapter 6.4.5 “SETUP additional menu items: CPH configuration”).

Unit and resolution After selecting one of the main menu items (e.g.: MEASURING, CALIBRATION or SWITCH TEST) from the SETUP menu (press SETUP key), using the menu item “Unit”,

and its associated submenu respectively (move the cursor to “Unit” and press the right or left arrow), you can set the unit and adjust its resolution (see chapter 6.3 “Operating modes”).

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19WIKA operating instructions, model CPH7650

4. Design and function

Available units, including their conversion factors in relation to the unit bar

bar 1.00000E+00 mbar 1.00000E-03 hPa 1.00000E-03

psi 6.89475E-02 inHg (0 °C) 3.37690E-02 cmHG (0 °C) 1.33322E-02 MPa 1.00000E+01 kPa 1.00000E-02 Pa 1.00000E-05

O (4 °C) 9.80670E-02

O (4 °C) 9.80670E-04

cmH

O (4 °C) 9.80670E-05

mmH

kg/cm

O (60 °C) 2.48800E-03

inH

O (0 °C) 1.33322E-03

mmH

4.5.3 Zero point setting and offset correction

Zero point setting for overpressure sensors

If the measured value shown on the CPH7650, with an overpressure sensor connected and the test assembly vented to atmosphere, is not equal to zero, then by pressing the CLEAR button twice (within five seconds), the zero point can be corrected (maximum allowable correction value is twice the magnitude of the class accuracy).

9.80665E-01

Offset correction for absolute pressure sensors

For absolute pressure sensors, an offset correction can be made via the menu (see chapter 6.4.3 “SETUP additional menu items: Reference sensor”).

4.5.4 Reference pressure sensor CPT6000

For the model CPH7650 pressure calibrator, there are many reference pressure sensors to choose from, with accuracies of 0.025 % which can be interchanged quickly and without tools. When the pressure calibrator is switched on, the reference pressure sensor attached is recognised automatically, so that no further configuration of the sensor is needed.

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4. Design and function

4.5.4.1 Connection of the model CPT6000 reference pressure sensor

WARNING!

■

Only use model CPT6000 reference pressure sensors!

■

Using other sensors could damage both the pressure calibrator and the reference pressure sensor.

■

CAUTION!

Only ever use the original WIKA sensor connection cable in the operation of CPT6000 reference pressure sensors.

WARNING!

The pump performance is independent of the pressure range of the selected reference sensor. The operator must ensure that the CPT6000 reference sensor is not over-pressured.

4.5.4.2 Electrical connection of the CPT6000 reference pressure sensor to the CPH7650

The calibrator and the reference pressure sensor are connected to each other electrically using a separate connection cable. To electrically connect a model CPT6000 reference pressure sensor, the corresponding cable connector must be plugged in at the sensor in accordance with the orientation guide. To disconnect the sensor, do not pull on the cable, but rather only on the connector sleeve. To connect it to the CPH7650, the other end of the cable must also be plugged in in accordance with the orientation guide.

4.5.4.3 Mechanical connection of the CPT6000 reference pressure sensor to the CPH7650

To make the mechanical connection of the CPT6000 reference pressure sensor, it must be placed, connection thread first, in the sensor bracket of the instrument. Then, the sensor must be tightened again. (Tighten = turn clockwise; release = turn anti-clockwise) No further tools are required for this.

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21WIKA operating instructions, model CPH7650

5. Transport, packaging, storage

5. Transport, packaging and storage

5.1 Transport

Check the portable pressure calibrator for any damage that may have been caused by

transport. Obvious damage must be reported immediately.

5.2 Packaging

Do not remove packaging until just before mounting. Keep the packaging as it will provide optimum protection during transport (e.g. change in installation site, sending for repair).

5.3 Storage

Permissible conditions at the place of storage:

■

Storage temperature: -20 ... +60 °C

■

Relative humidity: 0 ... 85 % r. h. (non-condensing)

Avoid exposure to the following factors:

■

Direct sunlight or proximity to hot objects

■

Mechanical vibration, mechanical shock (putting it down hard)

■

Soot, vapour, dust and corrosive gases

■

Hazardous environments, flammable atmospheres

Store the portable pressure calibrator in its original packaging in a location that fulfils the conditions listed above. If the original packaging is not available, pack and store the instrument as described below:

1. Wrap the instrument in an antistatic plastic film.

2. Place the instrument, along with shock-absorbent material, in the packaging.

3. If stored for a prolonged period of time (more than 30 days), place a bag containing a desiccant inside the packaging.

WARNING!

Before storing the instrument (following operation), remove any residual media. This is of particular importance if the medium is hazardous to health, e.g. caustic, toxic, carcinogenic, radioactive, etc.

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6. Commissioning, operation

By pressing any key, the model CPH7650 portable pressure calibrator will be switched on. The calibrator requires a warm-up for a few minutes (max. 5 minutes) to reach its specified accuracy. Large changes in ambient temperature may make a longer warm-up period necessary. The pressure display of the calibrator should be zeroed before starting the pressure calibration.

Instrument features The instrument features 3 operating modes: MEASURING / CALIBRATION / SWITCH TEST, which offer the user maximum convenience according to its application. For

supplying the test items and to read their measuring signals, there are electrical inputs and outputs available. In the MEASURING (with test item) and CALIBRATION operating modes, the measured values of both the reference pressure sensor and the test item, as well as their deviation, are displayed in both current pressure units and in %. In this way the operator is immediately informed online whether the test item meets the class accuracy or not. The difference between these two modes is that the calibration data in CALIBRATION mode are stored internally and can later be transferred onto printable certificates through software (WIKA-Cal). With respect to the transfer of data to a PC, the model CPH7650 pressure calibrator has a USB interface, selectable via menu.

SETUP menu

Using the SETUP key, one can access the SETUP menu, where the required operating mode (MEASURING / CALIBRATION / SWITCH TEST) can be selected and configured, a stored function can be recalled or a general instrument setting (such as the menu language) can be changed.

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6. Commissioning, operation

6.1 Menu structure (operating modes)

Through the SETUP menu, the required operating mode can be easily selected (see drawing below).

Functions CPH-Info ReferenceSensor Ref. Sensor-list CPH-Configuration Interface CLEAR CalData

CPH switch off

SELECTSELECT SELECT

SELECT SELECTSELECT

optional

Operating modes Configuration SETUP menu

It is possible to change the test item display (pressure ↔ electrical signal) via

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6. Commissioning, operation

6.2 Explanation of the display

6.2.1 Instrument status messages shortly after switching on the CPH7650

Directly after the instrument is switched on, the following status messages are displayed briefly:

CPH7650

a b c d e

a) The voltage supply of 24 V (available at the upper end of instrument) can, during the

configuration of each operating mode, be switched on or off. If it is not needed for a measurement, then it should be switched off, in order to conserve energy.

b) Current battery capacity (see chapter 6.4.5 “SETUP additional menu items: CPH

configuration”)

c) Height difference in mm

In the “SETUP\CPH configuration” menu, set the height difference between the test item and the CPT6000 reference pressure sensor. This value influences an automatic correction calculation in order to eliminate any pressure difference based on a medium column. This value must be correct for the following measuring procedure and/or be adjusted accordingly in the “SETUP/CPH configuration” menu (see chapter

6.4.5 “SETUP additional menu items: CPH configuration”).

d) Temperature in [°C]

In the “SETUP\CPH configuration” menu, the temperature (ambient temperature) is entered. This value can be adjusted accordingly in the “SETUP\CPH configuration” menu (see chapter 6.4.5 “SETUP additional menu items: CPH configuration”).

e) Current date of the integrated real-time clock

In the “SETUP\CPH configuration” menu, the date of the real-time clock is set, which is later marked on the calibration certificate. This value must be correct for the following measuring procedure in calibration mode and/or be adjusted accordingly in the “SETUP/CPH configuration” menu (see chapter 6.4.5 “SETUP additional menu items: CPH configuration”).

f) Calibration date for the electrical measuring inputs of the CPH7650 (Year/Month/Day)

Following the status messages, the display returns to the screen for the last-selected operating mode (see following chapter 6.2.3 “Display contents of the operating modes”).

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6. Commissioning, operation

6.2.2 Switching the pressure calibrator off

The instrument is switched off using the “Switch off CPH” menu item in the first submenu. For this, press the SETUP key, select the “Switch off CPH” menu item and confirm using the SELECT button. Switch off the CPH7650.

Functions CPH-Info ReferenceSensor Ref. Sensor-list CPH-Configuration Interface CLEAR CalData

CPH switch off

Switching off

6.2.3 Display contents of the operating modes

Operating mode: MEASURING

When a CPH7650 with a CPT6000 reference pressure sensor connected to it is first switched on, the instrument (after displaying a brief status message) switches to MEASURING mode (see following figure)

Display: MEASURING with reference pressure sensor only (without test item)

a b

a) Measuring range of the CPT6000 reference pressure sensor (which is currently

connected)

b) Current measured value of the reference pressure sensor c) Pressure unit (adjustable via menu)

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6. Commissioning, operation

In MEASURING mode, at the same time as the reference-pressure value, a test item can also be displayed on the screen (see following figure). With respect to the configuration, see chapters 6.3.1 “MEASURING mode” and 6.3.2 “MEASURING mode (with test item)”.

Display: MEASURING with test item

a b

P I/U

switchable

Pressure signal (test item) Electrical signal (test item)

a) Measuring range of the test item b) Current measured value of the test item c) Deviation/difference between reference and test item in the current pressure units and

in % of the measuring span (% FS) or % of reading (% rd) d) Pressure unit (of the test item) e) Original output signal of the test item f) Current value of the output signal of the test item

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6. Commissioning, operation

Operating mode: CALIBRATION

In the CALIBRATION mode the data shown above the dashed dividing line is the same as in the “MEASURING with test item” mode.

d e

P I/U

switchable

Pressure signal (test item) Electrical signal (test item)

a) Current measured value of the CPT6000 reference pressure sensor b) Current measured value of the test item c) Deviation between the test item and reference d) Set point of the calibration e) Actual value of the calibration f) P - 01: Test item No. 1

<01>: Test step No. 1

g) IDENT number of the test item h) Current value of the output signal of the test item

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6. Commissioning, operation

Operating mode: SWITCH TEST

In the SWITCH TEST mode, along with the reference pressure sensor data (see MEASURING mode), the status and switch points of the pressure switch are also displayed.

c d

a) Current measured value of the CPT6000 reference pressure sensor b) Current switching status/status of the pressure switch c) Opening switch point d) Closing switch point e) Hysteresis/separation between opening and closing of the switch f) Pressure unit (adjustable via menu)

6.2.4 Content of the SETUP menu

a b c

d e

g h

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Functions CPH-Info ReferenceSensor Ref. Sensor-list CPH-Configuration Interface CLEAR CalData

CPH switch off

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6. Commissioning, operation

a) Operating mode MEASURING

■

To measure working or process pressures

■

For comparative measurements and/or calibrations (without data recording) of

mechanical* and electrical pressure measuring instruments (supply and display of the test item through the CPH7650)

→ For further information, see chapter 6.3.1 “MEASURING mode” and

6.3.2 “MEASURING mode (with test item)”

b) Operating mode CALIBRATION

■

For on-site calibration of mechanical 1) and electrical pressure measuring instruments (without PC). In this case the data sets (for up to 16 test items, each with up to 32 test steps including date and time) are recorded within the CPH7650.

1) For mechanical dial instruments, the test item's measured value must be entered via the numeric keypad.

→ For more information please refer to chapter 6.3.3 “Mode CALIBRATION”

c) Operating mode SWITCH TEST

■

For the easy checking of pressure switches, including automatic calculation of the switch hysteresis.

→ For more information please refer to chapter 6.3.7 “SWITCH TEST mode”

d) Operating functions

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Tare: Offset correction of the reference pressure value

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Min/Max: Minimum/Maximum memory

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Alarm: Min/Max alarm (visual and audible)

■

Filter: Damping/smoothing of the reference sensor signal

→ For further information see chapter 6.4.1 „SETUP additional menu items: Functions“

e) General CPH7650 instrument data

■

Calibration data for the electrical measuring inputs

■

Firmware number

■

Serial number of the instrument

→ For more information please refer to chapter 6.4.2 “SETUP additional menu items:

CPH info”

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