OULD CP-100 Pressure Sensor Module (0-200 Bar) - 4-20mA Output, Ceramic Diaphragm

The CP-100 uses a standard two-wire 4-20mA loop. Connect the positive (V+) supply wire (9-36V DC) to the module's positive terminal, and the negative (V-) terminal to your PLC or receiver's analog input. The same wire pair carries both power and the signal current. Ensure your data acquisition device includes a precision shunt resistor (e.g., 250Ω) to convert the current loop signal back to a voltage for measurement.

The 96% alumina ceramic diaphragm offers good resistance to many non-aggressive liquids and gases, including water, oils, and mild chemicals. However, for highly corrosive acids, strong solvents, or media containing particulates, it is recommended to consult the manufacturer's chemical compatibility chart or consider an additional isolation seal. The direct-contact design means the sensing element is exposed to the medium.

The CP-100 is specified as a gauge pressure sensor. This means it measures pressure relative to the ambient atmospheric pressure at its location (effectively zeroing out atmospheric pressure). It is ideal for applications like tank pressure, hydraulic line pressure, or compressor output. For applications requiring measurement relative to a perfect vacuum (e.g., barometric pressure, vacuum systems), an absolute pressure sensor variant would be required.

The module features a compact body designed for integration into a custom housing or port. It typically includes a sealing ring groove for an O-ring. For installation, create a port with a flat sealing surface, place an appropriate O-ring (not always included), and secure the sensor using a threaded clamp or adapter that applies even pressure around the sealing perimeter without over-torquing, which could damage the ceramic diaphragm.

The module is factory calibrated for its specified range (0-200 Bar). Field calibration is generally not required but can be verified. To calibrate, you need a precision pressure source (deadweight tester or calibrated reference gauge) and a stable DC power supply. Apply known pressures (e.g., 0%, 50%, 100% of range) and measure the corresponding output current (4mA, 12mA, 20mA). If adjustment is needed, some variants may have internal potentiometers; otherwise, scaling can be done in your PLC or controller software.