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WIKA operating instructions, model CPH7650
EN
14261987.02 01/2019 EN/DE
4. Design and function
1
Connection of the power supply unit
2
Connection to the USB interface
3
Electrical connection to the CPT6000 reference pressure sensor
4
Measuring input for current or switch test (max. 24 mA)
5
Measuring input, voltage (max. DC 0 ... 12 V)
6
Voltage supply DC 24 V (50 mA) (can be activated via menu)
WARNING!
Physical injuries, damage to property and the environment due to
electric shock
Improper handling can lead to dangerous situations and injuries, since
voltages may be applied on the components.
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Only connect original WIKA components to any of the electrical
connection sockets.
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Only use the power supply unit from WIKA, supplied with the instrument!
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Only use the test cables from WIKA, supplied with the instrument!
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Only use the USB interface cable from WIKA, supplied with the
instrument!
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Only make or disconnect any electrical connections while the pressure
calibrator is turned off.
▶
Make sure that the operating voltage specified on the power supply unit
corresponds to the local mains voltage.
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Do not overload the measuring inputs (see 10 “Specifications”)
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If the test item has its own power supply, switch off the internal DC 24 V
voltage supply via the menu.
If the pressure calibrator is set for reading from test items with voltage outputs (e.g.
DC 0 ... 1 V / DC 0 ... 2 V / DC 0 ... 5 V / DC 0 ... 10 V) and no test item is connected to the
measuring input (voltage), then a non-zero value will be shown for the test item on the
display.
This is not an error, it is simply due to the electrical design of the measuring input.
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The internal DC 24 V voltage supply must not be short-circuited nor should the max.
output current through the snubber circuit exceed 50 mA.
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(In addition, it should not drop below 20 mA, in order to ensure an accurate current
measurement.)