WIKA CPG2300 Series, Operating Instructions Manual

Page: 33 / 44

Operating Instructions CPG2300 Series 33
Portable Digital Pressure Gauge
CPG2300 Series
8. Options
8.1 Current Input
The current input option is capable of measuring current from 3 to 24 milliamps (mA).
The calibrated range is from 4 to 20 mA. The CPG2300 also provides a 24V dc loop
power source which can be turned on or off and that will power most transmitters. The
CPG2300 current measurement is protected from over-current or high voltage up to
50V. It also has circuitry to prevent damage if the loop power is enabled and the input
terminals are shorted. To preserve battery life, the current measurement mode and loop
power are turned off through a power cycle. The input section is protected from over-
current or high voltage input by a comparator controlled mosfet that will limit the current
to a nominal of 24.8 mA. When the resident loop power is enabled, the current limiter
circuit will protect the instrument if the input terminals are shorted together.
8.1.1 Menu Screens
Main Menu: The current input is set up using the “mA Input” selection in the main
menu. This menu item will not be displayed unless the current input option is installed.
Select the setup screen by pressing the
♦
(enter) key.
Main Menu
Sensor A A Setup
Sensor B B Setup
Sensor A&B mA Input
mA Input Setup: The items in this menu perform the following functions when selected:
mA Input Setup
Display mA Off
Source V Off
Calibrate mA
Display mA Off (On): Enables/disables current measurement by toggling the enter key.
mA Input Setup
Display mA On
Source V Off
Calibrate mA