SOR Inc.
Pressure, temperature and level switches, level transmitters and sampling systems.
SOR has made rugged pressure, temperature and level instruments for process industries since 1946. The range includes hermetically sealed and explosion-proof switches, level transmitters and switches, temperature sensors and thermowells (SSi), and SENSOR grab sampling systems.
SOR is now part of DwyerOmega. In September 2026 DwyerOmega acquired SOR Controls Group. Ronsor continues to supply and support the full SOR range, and SOR customers can now also get the wider DwyerOmega range through us.
Browse by application
Combustion, Furnaces & Boilers
Gas Processing & Chemicals
Process Vessels & Skids
Pumps, Tanks & Storage
All SOR Inc. models by product type
Flow Switches
Level Switches
1510 Side Mounted Level Switch
The 1510 is a side mounted float level switch that features a Manual Check and a Low Power option. Actuation/deactuation can be...
1530 Pneumatic Level Switch
The 1530 is a side mounted float-operated pneumatic level switch. The float moves a magnet that actuates or de-actuates a...
1540 Non-Bleed Pneumatic Level Switch
vac to 1500 psi, vac to 100 bar; -40° to 400°F, -40° to 204°C Maximum process pressure 60 SCFH (1.7 CMH)
1710 Compact Level Switch
The SOR 1710 is a direct mounted, horizontal, float-operated level switch suitable for plant and OEM applications where open or...
Displacer Type Level Switch
SOR top mounted displacer switches perform well in large vessels and tanks allowing you to monitor up to 4 set points with up to 3...
Dual Point Ultrasonic Level Switch
The SOR model 722 and 712 dual point with self test ultrasonic level switches are the perfect choice when you need an instrument...
Float Type Top Mounted Level Switch
SOR top mounted float level switches are a lower cost alternative to the 700, 730 and 750 Vertical Displacer Series. They are...
Side Mount Level Switch With Chamber
SOR sealed chamber level detectors are an economical alternative to our flanged models. They are specifically designed for...
Single Point Ultrasonic Level Switch
The SOR 701 single point Ultrasonic level switch is a cost-effective level sensing solution for your applications. Preventive...
Steam Trap Level Switch
SOR steam trap level switches offer heavy construction for versatility of application and are available with flanged or sealed...
Top Mount Level Switch With Chamber
SOR flanged chamber level switches are designed for chamber serviceability. This allows for ease of cleaning, inspecting the...
Level Transmitters
1800 Series Differential Pressure / Pressure Transmitter
The 1800 Series Differential Pressure Transmitter model DMP305X-DST-S is well suited for intrinsically safe applications or...
800 Series Smart Pressure Transmitter
The 815DT smart differential pressure transmitter is a rugged, compact, light weight, loop powered instrument that is ideally...
815LT Smart Level Transmitter
The 815LT submersible smart level-pressure transmitter is a rugged, compact, loop-powered instrument that is ideally suited for...
Hydrostatic Level Transmitter
The 510 submersible level transmitter is an economical, loop-powered transmitter that accurately and reliably measures liquid...
Pressure Switches
Big Hermet
The SOR hermetically sealed, Big Hermet is designed for mounting in a panel or on the wall when easy access is critical. The...
Adjustable Dead Band
The SOR V3 adjustable dead band, explosion proof pressure switch is designed for use in hazardous locations where a wide,...
Bourdon Tube
Designed to work in extremely high-pressure applications, the explosion proof SOR bourdon tube pressure switch is well suited for...
Differential Pressure Switches
Models Big Hermet, Mini Hermet, 101/121 Ranges 3 to 500
Dual Hi Lo
The SOR V2 explosion proof sealed pressure switch features two discrete sensing assemblies and 2 separate set points with 2...
Dual Opposed Diaphragm
This versatile opposed piston type differential pressure switch from SOR is essentially two static o-ring type pressure sensors at...
High Static Operation
These differential pressure switches are suited for low-to-high differential pressure process media or fluid power applications...
Low Range 107 Differential Pressure Switch
Designed primarily for air and clean gas applications for low pressures, this instrument accurately reads very low pressures in...
Low Range Series 20 Differential Pressure Switch
Based on the tried and true Static “O” Ring type pressure sensor, the Low-range Series 20 explosion proof low pressure...
Mini Hermet
ATEX, UL/CSA, GOST, INMETRO, RTN, SIL; Snap Switch: ATEX, TestSafe (SAA), UL/CSA
Pressure and Vacuum Switches
SOR® Pressure Switches are rugged, field-mounted instruments. The pressure sensing element of the SOR pressure switch is a...
Sub Mini Hermet
8 to 200 psi, 0.5 to 14 bar (adjustable); 0.6 to 500 psi, 0.4 to 35 bar (factory set)
Pressure Transmitters
1800 Series Differential Pressure / Pressure Transmitter
The 1800 Series Differential Pressure Transmitter model DMP305X-DST-S is well suited for intrinsically safe applications or...
800 Series Smart Pressure Transmitter
The 815DT smart differential pressure transmitter is a rugged, compact, light weight, loop powered instrument that is ideally...
Sampling Systems
INLINE VALVE SAMPLING SYSTEM
The SENSOR Inline Valve Sampling System (IVSS) fits directly into the process piping system without the need to utilize, or...
Basic Bottle Sampling System
The SENSOR Basic Bottle Sampling System (BBSS), is a closed loop liquid grab sample system that is ideal for processes with...
Cylinder Sampling System
The SENSOR Liquified Gas Sampling System (LGSS) and Vapor Sampling System (VSS) are designed for safe and reliable closed-loop...
Heavy Products Sampling System
The SENSOR Heavy Products Sample System (HPSS) is designed to collect samples of hot, heavy products (such as resid, asphalt, hot...
Inline Sampling System
The SENSOR Inline Grab Sampling System (ISS) fits into a piping system without the need to utilize, or create, a pressure...
Pressure Isolating Bottle Sampling System
The SENSOR Pressure Isolating Basic Sampling System (PIBSS) is designed for safe and reliable closedloop “grab” sampling of...
RAM Sampling System
Available in wide variety of piping materials and end connections Suitable for high temperature, high viscosity service Can be...
Tank Farm Sampling System
Representative samples from several levels of a storage tank where there is no fast loop and no power: a hand pump circulates...
