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101/121 Big Hermet – Hermetically Sealed Differential Pressure Switch
Brand: SOR Inc
The SOR hermetically sealed, Big Hermet differential pressure switch is designed for mounting in a panel or on the wall when easy access is critical or you don’t want the switch right at the source of the pressure.
This versatile differential pressure switch uses a switching element that is hermetically sealed in a steel capsule, making it perfect for a wide variety of applications.
101/121 differential pressure switches are rugged, field-mounted instruments that incorporate a flexible modular design providing cost effective sensing solutions.The two-piece piston design allows for complete differential pressure reversal without damage.
Features- Modular Design - Wide range of electrical enclosures available.
- Robust Construction
- Rugged, high cycle rate tolerance, long life, not critical to vibration, high overrange and proof pressures, withstands full Hi and Lo side pressure reversals, excellent corrosion resistance to hostile environments.
- Instrument Quality - High repeatability, narrow dead band, negligible temperature effect and static influence.
- Wetted Parts - Wide selection of materials.
- Field Adjustable
- Excellent resolution of Set Points, adjustment, no special tools required
- No-charge factory calibration
- Agency Listings/Certification
- Select models with ATEX, IECEx, CSA, INMETRO and UL
- 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)
- Delivery
- Routine shipments 7 to 10 working days
- Emergency shipments via air same day
- Service - Factory service engineers and area factory representatives provide effective and prompt worldwide service.
- Warranty - 3 years from date of manufacture.
Specifications
Brand
Electrical Rating
- 0.25 A at 250 Vdc Resistive
- 0.3 A at 125 Vdc, Resistive
- 0.4 A at 125 Vdc, Resistive
- 0.5 A at 125 Vdc, Resistive
- 1 A at 28 Vdc, Resistive
- 1 A at 30 Vdc, Resistive
- 5 A at 30 Vdc, Resistive
- 7 A at 30 Vdc, Resistive
- 10 A at 30 Vdc, Resistive
- 15 A at 250 Vac
- 5 A at 250 Vac
- 1 A at 125 Vac
- 7 A at 250 Vac
- 11 A at 250 Vac
Electrical Connection & Type
- 18" 18 AWG Color-coded Wire Leads Except When Terminal Blocks are Specified - All Other Switching Elements
- Screw Terminal - Switching Elements K, KA, G, L, C, N, Y & W
- Connection Size: 3/4” NPT(F)
- Connection Size: 1/2” NPT(M)
Environmental Protection
- Explosion-proof
- Hazardous Area
- Non-Hazardous Area
- NEMA 1
- NEMA 4
- NEMA 4X
- IP65
Switch Type
- DPDT
- SPDT
Ambient Temperature
- -54° to 104° C (-65° to 400° F)
Process Connection Material
- Pressure Port: 316 Stainless Steel; CF-8M Cast Alloy
Electrical Contacts
- Lower Power & Hermetically Sealed Gold Contacts
- Normally Closed
- Normally Open
O-Ring Material
- Buna-N with Allowable Temperature -34° to 93° C (-32° to 200° F)
- Viton with Allowable Temperature 0° to 204° C (32° to 400° F)
Diaphragm Material
- 316 Stainless Steel
- Hastelloy B
- Viton
- Teflon-Coated Polyimide (TCP)
Gasket Material
- Viton
- Cover Gasket: Neoprene
Set Point - Decreasing
- bar: 0.2 to 34.5
- kPa: 20 to 3450
- psi: 3 to 500
Set Point - Increasing
- bar: 0.2 to 34.5
- kPa: 20 to 3450
- psi: 3 to 500
Pressure Range
- 3 to 500 psid
Typical Dead Band
- 0.5 to 20 psi
Housing Material
- Aluminum
- Cast Iron
Approvals & Certifications
- ATEX Ex db IIC T6/T5 Gb, II 2 G EEx M II
- CRN - Canadian Registration Number
- CSA: for Hazardous Locations Class I, Grade A, B, C, D, Class II, Groups E, F, G, Divisions 1 & 2
- IECEx db IIC T6/T5 Gb
- INMETRO Ex db IIC T6/T5 Gb
- TestSafe: for Hazardous Locations Ex S Zone 2 IIC T4 IP65, Ex TD A22 T105° C IP65
- UL: for Hazardous Locations Class I, Grade A, B, C, D, Class II, Groups E, F, G, Divisions 1 & 2
- SAA
- SIL
Cover Material
- Aluminum - Housing Model TA
- Fluid Power Applications
- Low to High Differential Pressure
- Process Applications