|Minimum Order Quantity||25 Unit|
|Output||4-20mA, 0-10V |
Selecting a Parker Pressure Sensor for an application is more than just selecting the correct operating range of the sensor. Electromechanical pressure sensors convert the applied pressure to an electrical signal. When pressure is applied, the diaphragm is deflected causing the diffused resistors to change resistance (piezoelectric effect), which yields an electrical signal proportional to the pressure change. Applications for pressure switches are numerous and important in today's high-tech manufacturing environment. Parker Pressure Sensors are solid state sensors and not mechanical switches. The outputs are either analog (1 –5vc, 4-20ma or 0-20ma) or PNP/NPN
Open Collector Transistor Type Outputs. The application will determine if the Open Collector Output is used in a Hysteresis or Window Comparator Function. The output mode of the sensor, as well as whether the sensor is normally open (nonpassing) or normally closed (passing), can be programmed by you to fit your application. In addition to electrical outputs, most of these sensors have additional programming options that can be integrated into the system logic for additional benefits. These programming options are listed at the bottom of the page and are detailed on the next pages. Choose the best Pressure Sensor for the application based on Pressure Range, Output Type and additional programming options.
Outputs change N.O. / N.C. The status of the Output at 0 PSIG is either Normally Open (Non-Passing) or Normally Closed (Passing) and can be set through programming. Units of measure The units of measure on the display can be changed to suit the application. Some choices are PSI, inHg, Bar, Kpa, Mpa or mmHg and are dependent on the pressure range of the sensor. Hysteresis mode This output mode provides one switch point and a reversing point When the switch point pressure is achieved, the output (NPN / PNP) changes state and will not change back until the reversing point pressure is achieved. Window comparator mode This output mode provides two switch points These two points create a window that the sensor output holds it state (NO or NC ). This mode is also referred to as High/Low Setting. Anytime the pressure is higher or lower than the "window" the output changes state. Auto setting mode Programming feature that automatically sets switch point and reversing points for the outputs of the sensor based upon the minimum and maximum pressure readings of the sensor over time. Output response time Output response time is the time it takes for the output signal to change state after the pressure switch point is achieved. Sensor response time is typically less than 2.0 milliseconds and can be made slower by programming the response time in multiples of the standard sensor response time.