AConnection Size: 1/8" , Connection Type: NPT , Electrical Connection: NO/ NC , Enclosure Rating: NEMA 3, NEMA 7, NEMA 9 , IP Rating: IP 54 , Switch Type: SPDT
Working Mechanism
- Ensure that the gauge is mounted securely in a location free from excessive vibration & corrosion.
- Connect the pressure sources to the appropriate ports of the gauge using suitable tubing or piping.
- Confirm that the pressure sources are correctly connected to the high and low-pressure ports of the gauge. The high-pressure port typically connects to the source of greater pressure, while the low-pressure port connects to the source of lower pressure.
- Once the connections are established, apply pressure to the gauge system and observe the reading on the gauge display.
- The differential pressure is measured by observing the difference in pressure between the high and low-pressure ports.
- Take note of the unit of measurement displayed on the gauge and interpret the differential pressure reading accordingly.
Features
- These switches can operate within a temperature range of -40 to 140 degrees F.
- They have different enclosure ratings, including NEMA 3 (IP54), NEMA 7 and NEMA 9, offering superior protection in hazardous environments.
- They feature a single-pole double-throw (SPDT) switch configuration for common, normally open and normally closed contacts, ensuring a secure and reliable electrical connection.
- These switches have 1/8-inch female NPT process connections and can be easily integrated into the pressure system being monitored.
- They feature a screw-type set point adjustment mechanism located on the top of the housing, allowing for easy and precise adjustment of the pressure set point.
Frequently Asked Questions
How to install these Dwyer differential pressure switches?
- Select a location that is free from excess vibration and corrosive atmospheres.
- Mount the standard switches with the diaphragm positioned in a vertical plane.
- Make sure that the switch lettering and nameplate are upright.
- Connect the switch to the source of pressure, vacuum or differential pressure.
- Join the tubing to the two 1/8-inch female NPT pressure ports.
- Connect pipes or tubes from the source of greater pressure to the high-pressure port marked HIGH PRESS and from the source of lower pressure to the low-pressure port marked LOW PRESS.
How to change the set point of these differential pressure switches?
- Remove the plastic cap located at the top of the housing by carefully pulling it off.
- Locate the slotted adjustment screw underneath the plastic cap. This screw is used to change the set point pressure of the switch.
- To increase the set point pressure, turn the screw clockwise (to the right). To decrease the set point pressure, turn the screw counterclockwise (to the left).
- Make adjustments to the set point slowly and carefully to ensure accurate calibration.
What is the difference between a differential pressure gauge and a pressure gauge?
A differential pressure gauge measures the difference in pressure between two points, whereas a standard pressure gauge measures the pressure at a single point in a system. Differential pressure gauges are used to monitor pressure differentials, while pressure gauges are used to measure absolute or gauge pressures.
How do I select the right differential pressure gauge for my application?
When selecting a differential pressure gauge, consider factors like the pressure range, accuracy requirements, environmental conditions and compatibility with the measured media.
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