Have a live application? Use our United Electric Product Overview and Quick Selection Guide to configure the model and options for your requirement:
ABLE are United Electric’s Exclusive Representative for Sales and Service in the UK and Ireland and can assist you and your customers in the following areas:
- Application expertise
- Our factory trained engineers offer after sales support, service and maintenance (contracts available)
- Offer advanced United Electric pressure / temperature switch product training, either in-person or via video call.
Further to the above, ABLE can offer custom solutions based on your individual requirements. Email us now at [email protected]
United Electric 12 Series Explosion Proof Pressure / Temperature Switch
ABLE Instruments are United Electric’s Exclusive Representative for Sales and Service in the UK and Ireland, including the UE 12 Series range of explosion proof, dual seal, 316 stainless steel, vibration resistant pressure, vacuum, differential pressure and temperature electromechanical switches. A compact, cylindrical design provides installation flexibility for process equipment or control panels.
The United Electric 12 Series offers process end-users and OEMs, safety and control reliability in a rugged, compact design for alarm and emergency shutdown applications. Quadruple approvals (UL, cUL, ATEX and IECEx) mean the 12 Series meets the demanding requirements of critical applications within hazardous locations. Additionally, the UE 12 Series complies with ANSI/ISA 12.27.01, “secondary seal requirements for process sealing between electrical systems and flammable or combustible process fluids,” and NEC 501.17, “process sealing.” It can be used in a variety of applications where space is at a premium. Metal wetted parts comply with NACE MR0175 and the 316 stainless steel, type 4X enclosure rating assure long-term performance in the harshest environments. Furthermore, SIL 2 certification simplifies use in safety instrumented systems (SIS). Typical applications that utilise the UE 12 Series include offshore production safety panels, rotating equipment, fire suppression systems, BOP accumulator systems, and CO2 injection skids.
Features:
- UL, cUL, ATEX and IECEx approved for Div. 1 or Zone 1 hazardous locations; CE compliant
- Dual seal compliant to ANSI/ISA 12.27.01 & NEC 501.17
- Many models compliant to NACE MR0175
- Snap acting Belleville spring for long life, vibration resistance and stability
- Optional Hastelloy and Monel sensor material for corrosive media
- Mounting bracket for retrofit applications
- 72” leadwires
Have a particular application / project in mind? We’d welcome a call on +44 (0) 1189 169 420, or email us now at [email protected]
At the heart of the United Electric 12 Series is a Belleville spring assembly. The spring is a small conical washer that transfers motion to a hermetically sealed 1- or 5-amp microswitch. Its ‘snap-action’ provides fast, positive contact transfer. The Belleville spring ‘snaps over’ when pressure is applied and ‘snaps back’ upon pressure release. This disc sensor assembly is resistant to vibration, reduces spurious trips and improves set point stability.
12 Series Specifications:
Storage Temperature | -58° to 203°F (-50 to 95°C) |
|---|---|
Operating Ambient Temperature | -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: 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. |
Set Point Repeatability | Temperature models: ±1% of adjustable range Pressure models: Sensor types 2, P: ±1.5% of adjustable range Sensor types 3-9: ±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 Ratings | Code H: 5 A at 125/250 VAC, 5 A resistive and 3 A inductive at 28 VDC. Silver contacts 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 requirement |
Weight | Temperature models: Approximately 1 lb 14 oz. (0,85 kg) Pressure models: Approximately 12 ounces (0,34 kg) Differential models: Approximately 3 lb (1,4 kg) |
Temperature Assembly | Non-toxic oil fill; 6 feet 304 stainless steel. Optional lengths available |
Temperature Deadband | Typically 2% of range under laboratory conditions (70°F ambient circulating bath at a rate of 1/2°F per minute change) |
Pressure Connection | 1/2″ NPT (female) or 1/4″ NPT (female). Differential pressure: 1/8″ NPT (female) Optional pressure connections available |
Mounting | Pressure: May be pipe mounted or bracket mounted using kit 62169-13 Differential Pressure: Should be mounted using 2 mounting holes on sensor bracket Temperature: Mounting kit 62169-13 should be specified for new installations |
APPROVALS | |
United States / Canada | UL Listed, cUL Certified Class I, Division 1 and 2, Groups A, B, C & D Class II, Division 1 and 2, Groups E, F & G Class III Class I, Zone 1, Group IIC Enclosure Type 4X Pressure: UL 508 & 698; CSA C22.2 No. 14, 25 & 30 – File # E40857 Dual seal certified to ISA 12.27.01 (meets CEC secondary seal requirements) standard on straight pressure models only Temperature: UL 873, 1203; CSA C22.2 No. 24, 25 & 30 – File # E43374 |
European Union | ATEX Directive 94/9/EC II 2 G Ex d IIC T6 II 2 D Ex tD A21 IP66 T+85C Tamb = -50°C to +80°C UL International DEMKO A/S (N.B.# 0539) Certificate # DEMKO 08 ATEX 0717128X EN 60079-0, 60079-1, 61241-0 & 61241-1II 1 G EEx ia IIC T6 (OPTIONAL – code M405) Tamb = -50°C to +60°C UL International DEMKO A/S (N.B.# 0539) Certificate # DEMKO 03 ATEX 0335063 EN 50014, 50020 & 50284 Pressure Equipment Directive (PED) 97/23/EC Compliant to PED Products rated lower than 7.5 psi are outside the scope of the PED Low Voltage Directive (LVD) 73/23/EC & 93/68/EEC Compliant to LVD Products rated lower than 50 VAC and 75 VDC are outside the scope of the LVD The Low Voltage Directive does not apply to products for use in hazardous locations |
Russia | Gosgortechnadzor Permit (OPTIONAL – code M406) 0ExiaIICT6 Tamb = -50°C to +60°C 1ExdIICT6X Tamb = -56°C to +85°C NANIO CCVE Certification Center Certificate # ROSS US.GB05.Bo2933 GOST R 51330.0, 51330.1, 51330.10 & 51330.14 |
