18 WIKA operating instructions, model CPG1500
EN
14161966.06 03/2024 EN/DE
4. Design and function
Pos. Button Meaning
9
ZERO button
The current pressure value will be set to “0” (gauge) or reference pressure
(abs.).
By pressing the [ZERO/▲] button, the current pressure value is set to “0”.
A maximum of 5 % of the measuring span can be corrected.
If the CPG1500 is in Menu mode, the cursor can be moved upwards by
briefly pressing the [ZERO/▲] button.
For gauge pressure measuring instruments, in the range of ±5 % of the zero
point, the measured value will be set to “0”.
With absolute pressure sensors, on pressing the [ZERO/▲] button, an input
window appears. Here, the current reference pressure must be entered. The
reference pressure must also be within ±5 % of the initial absolute pressure
of the instrument, then the measured value will be set to the reference
pressure entered.
4.6 Voltage supply
Three AA batteries are used as the voltage supply for the instrument. These are
included in delivery.
Battery life is up to 2,000 hours for continuous operation (without backlighting and with
Bluetooth
®
deactivated).
In the upper right half of the display there is a symbol for the battery capacity. For the
explanation of symbols, see chapter 4.5 “Front foil”.
The current battery voltage as well as the remaining useful life of the battery are
displayed via the battery symbol.
The battery status display lights up
Replace the battery to avoid data loss when logging or in general during
downtime, see chapter 8.2.2 “Battery replacement”.
4.7 Process connections
The CPG1500 is available with all industry-standard process connections, as standard
G ½ B is specified.
When screwing the NPT thread of the CPG1500 to an adapter or a pressure
connection, it is necessary to use additional sealant between the threads, e.g. PTFE
tape. The hose, lines and fittings etc. must always be approved for at least the operating
pressure corresponding to the instrument's maximum pressure or measuring range end.
In addition, there must be no leaks during the calibration process – if necessary, seal
using PTFE tape.
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