A pressure switch is a device that detects the presence of fluid pressure. Pressure switches use various sensing elements such as diaphragms, bellows, bourdon tubes, or pistons. The movement of these sensors, caused by pressure fluctuation, is transferred to a set of electrical contacts to open or close a circuit.
When selecting pressure switches, you must consider several critical criteria:
- The electrical requirements (volts, amps, AC, or DC)
- The area classification (hazardous, non-hazardous, general-purpose, water-tight)
- The pressure sensing range
- The body materials exposed to ambient contaminants
- The wetted materials - parts exposed to the process media
Typical applications for mechanical pressure switches include hydraulics & pneumatics, pumps & compressors, tank monitoring, leak detection, and water management.
NOSHOK's new mechanical pressure switch program addresses a broader range of applications. It offers a significantly expanded selection of process and electrical connection options, including spade terminals, Hirschmann, Packard, Deutsch, M12 x 3-pin, flying leads, terminal screws, and both Weatherpack Tower and Weatherpack Shroud. Each of the four new NOSHOK switch series offers vacuum, low pressure, and high-pressure versions and is CE compliant for RFI, EMI, ESD suppression, and RoHS compliance.
The NOSHOK 100 Series Mechanical Compact SPST Pressure Switch has been updated with a creep action, low current switch. These switches have silver-plated contacts with switch adjustment ranges ranging from vacuum to 6,000 psi. The 100 Series switch series includes housing materials such as brass and zinc-nickel and wetted parts made of Buna-N or Kapton, depending on the model.
NOSHOK’s new 200 Series Mechanical Compact SPDT Pressure Switch is an SPST or SPDT snap-action switch with solid Silver contacts. This switch ranges from vacuum through 6,000 PSIG and Brass or Zinc-nickel housing material with Buna-N diaphragm wetted parts.
The new 300 Series Mechanical Compact SPDT with Adjustable Hysteresis Pressure Switch is an SPST or SPDT snap-action switch with solid Silver contacts. The 300 Series offers switch adjustment ranges from vacuum through 4,600 PSIG depending on model and a standard Zinc-nickel housing with Buna-N diaphragm wetted parts. The NOSHOK 300 Series switch provides an improved contact rating over the previous version of 6A 125V/250VAC and 6A 12/24VDC.
Lastly, NOSHOK’s new 400 Series Mechanical Heavy-Duty Pressure Switch is a snap-action, high current device that offers field adjustability. The 400 Series offers switch adjustment ranges from vacuum through 4,600 PSIG with a Standard Zinc-nickel with Buna-N diaphragm wetted parts. This switch also provides an improved contact rating over the previous version of 6A 125V/250VAC and 6A 12/24VDC.
For more information, contact Advance Instruments. Call them now at (888) 388-6446 or visit their website at https://advanceinstruments.com.
