1. Product Overview:United StatesThe SOR pressure switch is a type of pressure switch that uses a high-precision, high-stability pressure sensor and transmission circuit, combined with a dedicated CPU modular signal processing technology, to detect, display, alarm, and output control signals for medium pressure signals. The SOR pressure switch from the United States is a well-known pressure switch product that is popular worldwide. It mainly adopts a piston diaphragm structure sealed with a static O-ring, featuring high pressure resistance, high temperature resistance, strong shock resistance, strong overpressure capability, a wide measurement range, small hysteresis, and long service life. Therefore, SOR switches are widely used in industries such as petroleum, chemical, electric metallurgy, pharmaceuticals, papermaking, food, and water treatment. Its high static pressure low differential switch is among the best in the world. Its core pressure products are also the first in the world to obtain IEEE certification. Common models of SOR pressure switches include:BH-011001-011

Here are the key features of the SOR pressure switch BH-011001-011:

High Accuracy & Stability: Utilizes a high-precision pressure sensor with modular signal processing and a dedicated CPU for reliable detection, display, and control output.

Robust Construction: Piston-diaphragm structure sealed with a static O-ring ensures excellent resistance to high pressure, temperature, and shock.

Wide Pressure Range: Typically rated for 12–100 PSI, suitable for a variety of industrial applications.

Versatile Applications: Commonly used in petroleum, chemical, metallurgy, pharmaceuticals, papermaking, food, and water treatment industries.

Long Service Life: Designed for durability with small hysteresis and strong overpressure capability.

Field Adjustability: Available in both internal and external adjustable types for flexible calibration.

Safety Certified: Select models meet IEC 61508 SIL1 and SIL2 requirements for use in Safety Instrumented Systems.

Environmental Protection: Enclosure ratings up to NEMA 4X and IP66 for harsh environments.

Snap-Action Switching: Offers UL and CSA certified switching elements, including hermetically sealed options for hazardous areas.

2. Frequently Asked Questions – SOR Pressure Switch BH-011001-011

1. What is the BH-011001-011 pressure switch used for? 

It’s designed for monitoring and controlling pressure in industrial systems—commonly used in petroleum, chemical, metallurgy, pharmaceutical, and water treatment applications.

2. What is the sensing mechanism? 

It uses a piston-diaphragm structure with a static O-ring seal, offering high resistance to pressure spikes, temperature extremes, and vibration.

3. Is it suitable for safety-critical applications? 

Yes. Select models meet IEC 61508 SIL1 and SIL2 requirements, making them suitable for Safety Instrumented Systems.

4. Can I adjust the setpoint in the field? 

Yes. The switch is available in both internal and external adjustable versions for flexible calibration.

5. What is the repeatability of the switch? 

Repeatability is typically better than 1% of full scale, ensuring consistent performance over time.

6. What kind of electrical output does it provide? 

It offers mechanical SPDT or DPDT snap-action switching, with UL/CSA certified and hermetically sealed options for hazardous areas.

7. What’s the enclosure rating? 

The switch is rated up to NEMA 4X / IP66, making it suitable for harsh environments.

8. Can it handle corrosive media? 

Standard models are suitable for air, oil, water, and non-corrosive media. For corrosive applications, optional wetted materials are available.

9. How is it mounted? 

Typically via a 1/4"–18 NPT process connection. It can be mounted in any orientation, though vertical (conduit down) is recommended to prevent moisture ingress.

10. What is the proof test interval for SIL applications? 

For SIL-rated installations, the recommended proof test interval is one year, and the switch should be used in Low Demand Mode.

3. Common Models of SOR Pressure Switch: