Pressure Sensor

P r e s s u r e S e n s o r

The pressure sensor developed for the PMC-R is an MSHA-approved Intrinsically Safe device with low power consumption and the strength to absorb extremely high pressure spikes without sustaining damage. This sensor can measure hydraulic pressures up to 600 bar with 5% accuracy and can withstand pressures up to 1000 bar. The hydraulic connection is a DN10 staple-lock fitting that is usually connected directly to the leg check assembly on the shield. The sensor is electrically connected to the PMC-R using an SKK24 hose cable. The cable provides both the power and signal connection between the PMC-R and sensor. The cutaway view above shows the SKK24 electrical connection on the left and the DN10 hydraulic connection on the right. An amplifier integrated into the pressure sensor housing ensures that in the measuring range of 0 - 600 bar the respective output voltage of 0.5 – 4.5V is generated, as shown below:

Pin Assignments

1: 12v dc 2: Signal (0.5–4.5v dc) 3: No connection 4: Ground