120 Series Temperature & Pressure Switches

Rugged, Explosion-proof Pressure, Vacuum, Differential Pressure and Temperature Switches

 

 

As safety requirements become more stringent, the determining factor in specifying an industrial pressure, differential pressure and/or temperature switch rests upon that switch protecting equipment, processes and personnel. Meeting hazardous location requirements through worldwide approvals and certifications, UE’s 120 Series is the choice where potentially explosive or highly corrosive atmospheres exist.

 

The 120 Series offers a variety of pressure, vacuum, differential pressure and temperature ranges, as well as process connections, wetted materials and sensor types. With a common flexible platform, models can quickly be adapted at the factory for special requirements, such as ranges, process connections and electrical ratings. Typical industries using 120 Series switches include chemical, petrochemical, refinery, oil and gas production and transmission, and pharmaceuticals.

 

 

 

 

Product Overview

Features

Specifications

Customer Drawings

Approvals

Class 1, Divisions 1 & 2, Zone 1

UL listed, cUL certified, ATEX flame-proof & CE (LVD, PED) compliant; other worldwide hazardous location approvals

    available

Dual electrical conduit openings provide mounting flexibility while terminal block provides ease of wiring

SPDT, DPDT, or dual SPDT switch output

  of pressure sensor materials, including welded stainless steel diaphragms and bellows

Internal or external set-point adjustment

Heat trace & freeze protection temperature models

Adjustable set-point ranges:

         Pressure & Vacuum: 30 ”Hg Vac to 6000 psi

             1 to 413,7 bar

         Water Column: 300 “wc Vac to 250 “wc

              -746,7 to 622,3 mbar

        Differential Pressure: 0.2 “wcd to 500 psid

              0,5 mbar to 34,5 bar

        Temperature: -180 to 650 ºF

              -117.8 to 343.3 ºC

 

 

 

 

  Standard product approvals include cULus, ATEX & IECEx

  Optional approvals for Russia, Ukraine and China

  Internal adjustment hex or external adjustment via calibrated dial(s)

   with tamper resistant cover

  Integral cover lock

SPDT, DPDT or dual SPDT output

  Wide variety of sensor materials

  Optional Hastelloy® and Monel® sensor material for corrosive media

  Wide adjustable deadband models

  Flush mount sensors

  Heat tracing temperature models

  Most models available for immediate delivery!

Specifications:

 

Storage Temperature                    -65 to 160°F (-54 to 71°C)

 

Ambient Temperature                   -58 to 160°F (-50 to 71°C); models 36-39, 520-525, 540-548, 701-705, 15834-15839:

    Limits                                          0 to 160°F (-17 to 71°C); types 820E, 822E: -40 to 160°F (-40 to 71°C) set point

                                                          typically shifts less than 1% of range for a 50°F (28°C) ambient temperature change;

                                                          less than 2% for types E121& E122

 

Set point                                       Temperature models: Type B, C and F: ±1% of full scale range

     Repeatability                              Type E: ±2% of full scale range

                                                          Pressure models 126-164, S126B-S164B, 171-174, 270-274, 358-376, 520-535,

                                                          540- 543, 560-564, 701-705, 15622, 15834,-15839: ±1% of full scale range; models

                                                          450-559: ±1/2% of full scale range; models 36-39, 183-194, 483-494, 544-548,

                                                          565-567, 612-680, 15875: ±1-1/2% of full scale range

 

Shock                                            Set point repeats after 15 G, 10 millisecond duration

 

Vibration                                       Set point repeats after 2.5 G, 5-500 Hz

 

Enclosure                                      Die cast aluminum, epoxy powder coated; gasketed; coverlock; internal set point lock

                                                          standard on types J, C, F; gasketed stainless steel tamper-resistant dial cover on types

                                                          B, H, E; aluminum nameplate

 

Enclosure Classification             Certified to enclosure type 4X. Class I, Division 1 product meets enclosure type 7;

                                                         Class  II, Division 1 product meets enclosure type 9. Certified to IP66 requirements

 

Switch output                               One or two SPDT; dual switch may be separated up to 100% of range; except type 822E

                                                         where switch #2 can be set up to 25% of range span below switch #1 setpoint; switches

                                                         may be wired “normally open” or “normally closed”. Two SPDT hermetic sealed

                                                         switches available on H122P models

 

Electrical rating                            15A 125/250/480 VAC resistive (standard) except types J120-15622, 15834-15839,

                                                         H121-15875: 20A 125/250/480 VAC resistive; H122P; 11A 125/250 VAC resistive;

                                                         B121-13272, B122-13322, E121-13273, E122-13321; 22A 480VAC resistive. Electrical

                                                         switches have limited DC capabilities. Consult factory for additional information

 

Reference Scales                         Types B, E & H: external dial. Scale divisions vary with range (see model charts)

 

Weight                                           3-8 lbs. Varies with type and model

 

Electrical  Connection                 Type H, B, E; one 3/4" NPT E/C; type J, C, F, 820E, 822E; two 3/4" NPT E/C;

                                                          terminal block standard

 

Pressure Connection                   Models S126B-S164B, 171-194, 483-494, 520-535: 1/2" NPT (female); models

                                                         560-564: 2"  flush mount connection; models 565-567: 1-1 ⁄ 2" flush mount connection;

                                                         models 540-548: 1/8" NPT (female); all others: 1/4" NPT (female)

 

Temperature Assembly                Bulb and capillary: 6 feet 304 stainless steel (standard) except for E121-13273 and

                                                         E122-13321: 10 feet; Immersion stem: nickel-plated brass (standard) except for

                                                         B121- 3272 and B122-13322: stainless steel. Fill: Model 1BS: solvent filled; models

                                                         2BS-8BS: non-toxic oil filled

 

Temperature Deadband               Type F120, 820E, 822E: typically 1%; type B-, C-, and E- 121 and 122: typically 2% of

                                                         range under laboratory conditions (70°F [21°C] ambient circulating bath at rate of

                                                         1/2°F per minute change)

 

Pressure Deadband                     Type F120, 820E, 822E: typically 1%; type B-, C-, and E- 121 and 122: typically 2% of

                                                         range under laboratory conditions (70°F [21°C] ambient circulating bath at rate of

                                                         1/2°F per minute change)

 

Differential Pressure                    Differential pressure indication available types H121K and H122K with option M210

    Indicator Option M210               (check model availability under options); accuracy approximately 1% mid 50% of range,

                                                         3% at ends; window is plexiglass and gasketed; indicator may be field adjusted for

                                                         approximately ±1% accuracy at any set point within range

 

  Temperature Indication              Temperature indication available types 820E and 822E. Indication accuracy is ±1% of

                                                         adjustable range

 

120 Series Customer Drawings

 

12128 - Type B121, Models 120 to 121

12144 - Type B122, Models 120 & 121

12116 - Type C120, Models 120 & 121

12121 - Type E121, Models 2BS to 8BS

12145 - Type E122, Models 2BS to 8BS

12117 - Type F120, Models 1BS to 8BS

12126 - Type H121, Models 126 to 164 & S126B to S164B

12123 - Type H121, Models 270 to 274

12125 - Type H121, Models 358 to 376

12155 - Type H121, Models 450 to 454

12154 - Type H121, Models 550 & 555

12122 - Type H121, Models 612 to 614

12464 - Type H121, Models 701 to 705

12459 - Type H121K, Models 147 & 157

12124 - Type H121K, Models 456 to 559

12149 - Type H122, Models 123 to 164 & S126B to 164B

12147 - Type H122, Models 270 to 274

12146 - Type H122, Models 358 to 376

12163 - Type H122, Models 450 to 454

12156 - Type H122, Models 552 to 555

12150 - Type H122, Models 612 to 614

12465 - Type H122, Models 702 to 705

12148 - Type H122K, Models 456 to 559

12461 - Type H122K. Models 147 & 157

12951 - Type H122P, Models 126 to 164

12953 - Type H122P, Models 270 & 274

12954 - Type H122P, Models 358, 361 & 376

12956 - Type H122P, Models 450 to 454

12831 - Type H122P, Models 5355 & 5835 (obsolete)

12957 - Type H122P, Models 550 to 555

12955 - Type H122P, Models 612 & 614

12107 - Type J120, Models 126 to 164 & S126B to S164B

12945 - Type J120, Models 171 to 174

12850 - Type J120, Models 183 to 186 & 483 to 486

12844 - Type J120, Models 188 & 189, 488 & 489

12453 - Type J120, Models 190 to 194 & 490 to 494

12108 - Type J120, Models 270 & 274

12109 - Type J120, Models 356, 358, 361 & 376

12294 - Type J120, Models 450 to 454

12958 - Type J120, Models 520 to 525

12962 - Type J120, Models 530 to 535

12295 - Type J120, Models 550 to 555

12987 - Type J120, Models 560 to 564

12988 - Type J120, Models 565 to 567

12111 - Type J120, Models 612 & 616

12141 - Type J120, Models 680

12122-2 - Type H121, Model 15875

12452 - Type J120, Models 701 to 705

12458 - Type J120K, Model 367

12456 - Type J120K, Models 147 & 157

12752 - Type J120K, Models 36 to 39

12110 - Type J120K, Models 455 to 457 & 559

13418 - Type J120K, Models 540 to 543

13419 - Type J120K, Models 544 to 548

12834 - Type J120X, Models 5355 & 5835 (obsolete)

12452-3 - Type J120, Models 15834 to 15839

12452-2 - Type J120, Model 15622

 

 

 

 

 

 

 

 

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