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United Electric Controls
A Message From The CEO
United Electric Controls has more than 80 years of proven experience providing rugged pressure and temperature electromechanical and electronic switches to Chemical & Petrochemical, Power, Water & Wastewater and Oil & Gas industries, as well as many other challenging OEM applications.
UE pressure switches, pressure transducers and pressure transmitters, temperature switches and temperature sensors are designed for rugged, industrial environments.
United Electric Controls has more than 150 distributors worldwide. Please visit our distributor locator page to find a distributor near you.
Three Manufacturing Divisions
Lean manufacturing for maximum productivity
Operational excellence (OpX) reduces waste
One-piece-flow for optimum manufacturing efficiency
Technical Sales: 617.923.6977
United Electric Controls Company
180 Dexter Ave
Watertown, MA 02472-4200
We actively use feedback to improve our delivery and provide you with the best possible service.
12 Series Overview
Vibration-resistant, 316 stainless steel Pressure, Differential Pressure and Temperature Switches
12 Series hazardous location switches are ideal for operation in tough applications where space is at a premium. A snap-action Belleville spring assembly is used to provide vibration resistance and prolonged switch life. The 316 stainless steel enclosure and hermetically sealed switch provide rugged protection from the environment. Approved for use in hazardous locations worldwide, the 12 Series is installed within applications ranging from offshore oil rigs to rotating equipment, and more.
Class 1, Divisions 1 & 2, Zone 1
UL listed, cUL certified, ATEX flame-proof & CE (LVD, PED) compliant,
dual seal compliance to ANSI/ISA 12.27.01
Compact, 316 stainless steel enclosure
Belleville spring design provides set-point stability and vibration resistance
SPDT or DPDT hermetically sealed switches
Variety of pressure sensor materials, including welded stainless steel
Convenient field adjustment through concealed adjustment compartment;
optional cover locking ring prevents incidental tampering
72” lead-wire with strain relief providedt
Adjustable set-point ranges:
• Pressure: 1 to 12,500 psi
0,1 to 861,9 bar
• Differential Pressure: 0.7 “wcd to 150 psid
1,7 mbar to 10,3 bar
• Temperature: -130 to 650 ºF
-90 to 343.3 ºC
316 Stainless Steel Construction
Hermetically Sealed Micro-switch
UL, cUL approved and ATEX compliant
Dual Seal Certified
Adjustable Pressure Ranges:
Pressure: 30" Hg Vac to 12,500 psi
(-1 to 861,9 bar)
WC Ranges: -20" wc Vac to 200" wc pressure
(-49,8 to 497,8 mbar)
0.7” wcd to 150 psid
(1,7 mbar to 10,3 bar)
Temperature: -130°F to 650°F
(-90°C to 340°C)
Storage Temperature -58° to 203°F (-50 to 95°C)
Operating Ambient -58 to 203°F (-50 to 95°C). Set point shifts less than 1% of range for a 50°F
Temperature (28°C) ambient temperature change. Slight ambient effects for 25-50’ extra
capillary length on temperature switch models, consult factory.
Media Temperature Pressure models: Sensor types 2, 7, 9: -50 to 400°F (-45 to 204°C)
Sensor types 3, 4, 8: -20 to 200°F (-28 to 93°C)
Sensor types 5, 6: 0 to 320°F (-18 to 160°C)
Sensor type P, W: 0 to 200°F (-18 to 93°C); 20 to 250°F (-7 to 121°C) for
optional Viton sensor
Differential pressure models: Sensor type K: 0 to 180°F (-18 to 82°C);
20 to 250°F (-7 to 121°C) for optional Viton sensor
Temperature models: See model chart (Pg. 9).
Set point Temperature models: ±1% of adjustable range
Repeatability Pressure models: Sensor types 2, P: ±1.5% of adjustable range
Sensor types 3-9, W: ±1% of adjustable range
Differential pressure models: K1 to K3: ±1%, K4 to K6: ±1.5% of adjustable range
Shock Differential pressure and temperature models: set point repeats after
15 G’s, 10 millisecond duration
Pressure models: Set point repeats after 75 G’s, 10 milliseconds
Vibration Differential pressure and temperature models: Set point repeats after
2.5 G’s, 10-2000 Hz.
Pressure models: Set point repeats after 15 G’s, 10-2000 Hz
Enclosure 316 stainless steel
Enclosure Classification Certified to Enclosure Type 4X
Class I, Division 1 product meets enclosure Type 7; Class II, Division I
product meets enclosure type 9.
Certified to IP66 requirements
Switch output Code S: One SPDT, hermetically sealed.
Code D: Two SPDT for DPDT action, hermetically sealed
Electrical rating Code H: 5 A at 125/250 VAC, 5 A resistive and 3 A inductive at 28 VDC.
Code L: 1 A at 125 VAC, 1 A resistive and 0.5 A inductive at 28 VDC
Bifurcated gold contacts
Electrical Connection Code N: 1/2" NPT (male) with 72" leadwires
Code M: M20 metric threads, 72" leads
Option M515, 4 terminal DIN connector (DIN 43650 Form A) available SPDT only
(does not meet Div. 1 or 2, or ATEX requirements.)
12 Series Customer Drawings
13405 - 12 Series (Press.) Sensor Type 2
13425 - 12 Series (Press.) Sensor Type 7
13406 - 12 Series (Press.) Sensor Type 3/4
13407 - 12 Series (Press.) Sensor Type 5/6
13435 - 12 Series (Temp.) Sensor Type R
13712 - 12 Series (Press.) Sensor Type 8
13713 - 12 Series (Press.) Sensor Type 9
13710 - 12 Series (Differential Press.) Sensor Type K1-K3
13711 - 12 Series (Differential Press.) Sensor Type K4-K6
13779 - 12 Series (Press.) Sensor Type P0-P4
13891 - 12 Series (Press.) Sensor Type P6 - P9
13982 - 12 Series (Temp.) Sensor Type L
13983 - 12 Series (Press.) Sensor Type W
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180 Dexter Avenue, Watertown, MA 02472-4200
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