Images are representations only.
Big Hermet Pressure Switch
Brand: SOR Inc
The Big Hermet Pressure Switch is a robust field-mounted instrument.
The pressure sensing assembly is identical to a conventional Static O-Ring type. The main difference is that the switching element assembly is hermetically sealed in a steel capsule.
Switching elements are SPDT or DPDT.
This pressure switch is suitable for a variety of process applications in hazardous locations and hostile environments.
Basic models with standard wetted parts are normally suitable for air, oil, water and non-corrosive process fluids.
Corrosive service and particle user requirements may require optional components.
Features- Robust Construction - High cycle rate tolerance, long life, not critical to vibration, protected internal hermetically sealed switching element capsule.
- Instrument Quality - High resolution of Set Points, high repeatability, narrow dead band, negligible temperature effect, high overrange and proof pressures.
- Explosion-proof and Hermetically Sealed Switching Element Capsule - Isolates switching elements from corrosive, hostile and hazardous environments and virtually eliminates problems from corrosion.
- Field Adjustable Set Points - Full range adjustability without disconnecting electrical power while maintaining explosion proof integrity, self-locking adjustment, no special tools required, no-charge factory calibration.
- Cost Effective - Simple and fast installation without special tools, long service life.
- Agency Listings/Certification - Select models with GOST R, RTN, SIL, UL/CSA, TestSafe (SAA). Meets most code and customer requirements.
- Safety Certified to IEC 61508 (SIL) - SOR products are certified to IEC 61508 for non-redundant use in SIL1 and SIL2 Safety Instrumented Systems for most models.
- For more details or values applicable to a specific product, see the Safety Integrity Level Quick Guide (Form 1528).
- Built-In Quality - Rigid quality standards maintained from raw material to finished product.
Specifications
Brand
Adjustment Type
- Field Adjustable
Ambient Temperature Range
- -40° to 75° C (-40° to 167° F)
Approvals & Certifications
- CRN
- CSA
- Dual Seal
- FM
- GOST
- RTN
- SAA
- SIL
- UL
Deadband, Approximate
- bar: 0.01 to 10.34
- kPa: 1.034 to 1,034
- psig: 0.2 to 150
Diaphragm Material
- 316L Stainless Steel
- Buna-N
- Carpenter 20 Stainless Steel
- Ethylene Propylene (EPR)
- Hastelloy B
- Hastelloy C
- Kalrez
- Monel
- Neoprene
- None
- Polyimide Coated with Teflon
- Stainless Steel
- Tantalum
- Titanium
- Viton
Electrical Connectors
- 18 AWG x 18” Leadwires
- 3/4” NPT Female Explosion-proof & Weathertight Electrical Junction Box
Electrical Contacts
- Gold
- Standard
Electrical Rating
- 1 A at 125 AC, 1 A at 30 DC
- 15 A at 250 AC, 0.4/5 A at 125/30 DC
- 5 A at 250 AC, 0.5 / 5 A at 125 / 30 DC
Enclosure, Body Material
- Aluminum
- Carbon Steel
- Stainless Steel
Environmental Protection
- IP65
- IP66
- NEMA 4, 4X / IP65, 66
- NEMA 4X
NACE & NIST
- NACE MR-0175, ISO 15156
NPT Connection
- 1” NPT Female
- 1” NPT Male
- 1/2” NPT Female
- 1/4” NPT Female
- 2” NPT Female
- 3/4” NPT Male
- Flushing Port
O-Ring Material
- AFLAS
- Buna-N
- Ethylene Propylene (EPR)
- Kalrez
- Neoprene
- Viton, Viton GLT
Process Connection Material
- 316 Stainless Steel
- 316L Stainless Steel
- 347 Stainless Steel
- Aluminum Series 2000
- Brass
- Carbon Steel Ledloy AX
- Carpenter 20 Stainless Steel / Alloy 20 or Incoloy
- CF-7M Casting
- CF-8C Casting
- CF-8M Casting
- Hastelloy B
- Hastelloy C
- Monel
Proof Pressure
- bar: 27 to 420
- kPa: 2,757 to 41,368
- psig: 400 to 6,000
Set Point - Decreasing
- bar: 0.02 to 275.8
- Inches Hg: -15 to 160
- Inches WC: -45 to 40
- kPa: 2.757 to 27,579
- psi: 0.4 to 4,000
Set Point - Increasing
- bar: 0.02 to 275.8
- Inches Hg: -15 to 160
- Inches WC: -45 to 40
- kPa: 2.757 to 27,579
- psi: 0.4 to 4,000
Switch Type
- DPDT
- SPDT
System Pressure
- bar: 0.4 to 275
- Inches Hg: -20 to 40
- Inches WC: -15 to 160
- kPa: 2.75 to 27,579
- psi: 0.4 to 4,000