RT2N Compact temperature switch Main Features Excellent repeatability Dead band adjustment for regulation Fix dead band for control and alarm Resistant to accidental overtemperature Light weight Applications Power generation safety equipment Technical Data Temperature range -46 ... 0°C to 160 ... 250°C Temperature Process : Ambient : Storage : -46 ... +250°C -30 ... +70°C -40 ... +70°C Repeatability ± 1% F.S. @ constant temperature cycle CE conformity Low Voltage Directive LVD 2006/95/EC Protection rating IP 66 (EN 60529) Process connection Stainless steel 1.4404 (316L) Bulb Stainless steel 1.4404 (316L) Ø 9.5 mm Scale Internal graduated scale Weight 0.960 kg + transmission Body Zamak black painting Housing Plastic PA6, blue Mounting Wall mounting 2 x M5 screws Ground connection Via internal terminal block Electrical connection Via internal terminal block with cable gland for Ø 5.5 to 8.5 mm Electrical function See ordering code details in page 4 Adjustment Internal adjustment possible for set point and dead band Code SETP Mounting on 2" pipe Code 0407 Stainless steel tag plate and wire Code 9941 Lead seal of the housing Code 8990 2015-04-21 Customer specific set point adjustment Design and specifications subject to change without notice Options www.baumer.com Data sheet B31.01 Page 1 / 5 RT2N Compact temperature switch Principle A vapour filled flexible sensing element actuates a microswitch by means of a piston. The set point is adjusted by means of a compressible spring installed in opposition. NC NC NC C C T°C P C NO NO NO Set point and reset point must be between 10% and 90% of the selected scale. Standard factory adjustment Setpoint at 50% of the scale on falling temperature Customer specific factory adjustment (option SETP) The following specifications have to be given with the order: • Setpoint value • Adjustment on falling or raising temperature • Dead band value when using an adjustable dead band switch NC C NC NC C C NO NO NO Adjustable ranges Micro-switch dead band 1) T max Adjustable dead band Code Fixed dead band R L M-N-P 10% 90% 10% 90% 10% 90% °C °C °C °C °C °C 2.5... 6.5 1 1 5 4 2.5... 5.5 2 ...6.5 1 1 5 4 3 ...6 2.5... 7 °C °C -46... 0 40 40 -20... 20 60 41 0 ... 45 80 42 40 ...120 145 43 5.5...10.5 100 ...180 190 44 6 4 ...7.5 ...12 1 0.5 3.5 3 3 ...8.5 1.5 1 6 6 4 ...7.5 1.5 1 7 5.5 20... 90 120 45 6.5 ...12.5 4 ...8 2 1.5 11 11 160 ...250 290 46 6 ...11 4 ...11 1.5 1 6.5 5 70 ...150 175 48 9.5...18.5 5.5...10.5 1.5 1.5 11 8 The value of the dead band is depending on the value of the set point. This table contains the dead band values for set point adjustment at 10% and 90% of the selected scale. For adjustable dead band the lower value corresponds to the dead band spring totally released and the higher corresponds to the dead band spring fully tensed . For other set points the dead band value can be calculated by linear interpolation between the values at 10% and 90%. 2015-04-21 1) Design and specifications subject to change without notice Scale www.baumer.com Data sheet B31.01 Page 2 / 5 RT2N Compact temperature switch Micro switches characteristics Switch code R L Adjustable dead band Type M N P Fixed dead band Standard Gold contact Tropicalized Ultra sensitive 6 Vdc 0.4 ... 10 A N/A 10 ... 50 mA 0.1 ... 8 A 0.4 ... 4 A 12 Vdc 0.4 ... 10 A N/A 10 ... 50 mA 0.1 ... 8 A 0.4 ... 4 A 24 Vdc 0.4 ... 5A N/A 10 ... 50 mA 0.1 ... 8 A 0.4 ... 4 A 30 Vdc 0.4 ... 5A N/A 10 ... 50 mA 0.1 ... 8 A 0.4 ... 2 A 48 Vdc 0.4 ... 5A N/A 10 ... 50 mA 0.1 ... 8 A N/A 110 Vdc 0.2 ... 0.25 A N/A 10 ... 50 mA N/A N/A 220 Vdc 0.1 ... 0.25 A N/A 10 ... 50 mA N/A N/A N/A 115 Vac 0.4 ... 10 A 0.4 ... 10 A 10 ... 50 mA 0.1 ... 10 A 250 Vac 0.2 ... 10 A 0.2 ... 10 A N/A 0.1 ... 10 A N/A 2000 V 2000 V 1000 V Dielectric rigidity between contacts and ground 2000 V 2000 V Electrical connections Micro switch Terminal block NC Blue COM Red NO White 2015-04-21 Design and specifications subject to change without notice Yellow / green www.baumer.com Data sheet B31.01 Page 3 / 5 RT2N Compact temperature switch Dimensions (mm) Direct mount temperature switches Temperature switches with capillary 97 73,5 S = Bulb length (temperature sensitive part) A = Additional stem length (min. 25 mm) 98 P = Immersion length (P = S + A) K = Capillary length (only TD1, TD2, TD3) flats 27/ 2 plats 2 grooves 5,5 33 68 E = Extension between process connection and housing only TRDE1 and TRDE2 33 E For version TD1 there is no additional stem length (A = 0). The sliding connection is mounted on the capillary. K ±2% K ±2% A Ø8 P± 3 Ø8 Ø 2,6 A Ø8 Ø 9,5 P±3 S 100 S S Ø 9,5 TRDE 1/2 TD1 TD2 Stainless steel sliding male connection (TD2/3, TRDE1/2) Clamping ring Stainless steel sliding male connection (TD1) Thread and sizes A Clamping nut Process connection TD3 B L H F Thread and sizes A F G 1/2 1/2 NPT H 18 21 L 36 40 A 17/flat 17/flat B 23/flat 23/flat Clamping nut B Tightness fittings L Process connection H F After tightening of the clamping nut, the stem is fixed in the process connection. Tight up to 40 bar. F G 1/2 1/2 NPT H 18 21 L 43 46 A 27/flat 27/flat B 27/flat 27/flat Waterproof after tightening mounted on the capillary. Bulb length (S) according to the capillary length (K) and the temperature range (code) Capillary Code 40 41 42 43 44 45 46 48 TRDE1 n/a S / mm 100 100 100 100 n/a 100 n/a n/a TRDE2 n/a S / mm 100 100 100 100 100 100 100 100 K = 1...4 m S / mm 100 100 100 100 100 100 100 100 TD1, TD2, TD3 TD1, TD2, TD3 K = 5...7 m S / mm 100 150 150 100 100 150 100 100 TD1, TD2, TD3 K = 8...10 m S / mm 100 200 200 100 100 200 100 100 Ordering example with options RT2 – N L . 40 . 1 1 3 C 0 / 9941 2015-04-21 Compact temperature switch Without ATEX approval 1 SPDT standard change over switch Temperature range -46 ... 0°C Transmission TD1 Capillary 1 meter Immersion length 150 mm Bulb Ø 9.5 mm Without process connection Option : Stainless steel tag plate and wire Design and specifications subject to change without notice Versions with S = 150 mm or S = 200 mm are not feasible with P = 150 mm www.baumer.com Data sheet B31.01 Page 4 / 5 RT2N Compact temperature switch Ordering details RT2N RT2 Model Compact temperature switch RT 2 Approvals Standard version without ATEX approval Type of microswitch 1 SPDT standard change over switch 1 SPDT gold contact change over switch 1 SPDT tropicalized change over switch 1 SPDT hermetically ultra sensitive change over switch 1 SPDT change over switch with adjustable dead band . / . – N L M N P R (not for TRDE1) (not for TRDE1) (not for TRDE1) 40 41 42 43 44 45 46 48 . 1 2 3 C D 0 1 2 3 4 5 6 7 8 9 A 0 3 4 5 6 D C 0 3 6 / 2015-04-21 Type of transmission TD1 Stainless steel capillary without protection TD2 Stainless steel capillary with stainless steel protection TD3 Stainless steel capillary with stainless steel protection and PVC coating TRDE1 Rigid transmission with E=65 mm for temperature measurement below 120°C TRDE2 Rigid transmission with E=120 mm for all temperature measurement Capillary length (K) Direct mounting (for TRDE1 and TRDE2) 1 meter 2 meters 3 meters 4 meters 5 meters 6 meters 7 meters 8 meters 9 meters 10 meters Immersion length (P) Immersion length (P) = Bulb length (S) + additional stem length (A) P = S + 25 mm (minimum additional stem length A = 25 mm, for S see table on page 4) P = 150 mm (not for TD1) P = 250 mm (not for TD1) P = 400 mm (not for TD1) P = 600 mm (not for TD1) P = 1000 mm (not for TD1) Bulb diameter Ø 9.5 mm Process connection Without G1/2 male (standard) 1/2 NPT male Options to be added behind the / (see example on page 4) . Design and specifications subject to change without notice Temperature range (°C) - 46 ... 0 20 ... 20 0 ... 45 40 ... 120 100 ... 180 20 ... 90 160 ... 250 70 ... 150 – www.baumer.com Data sheet B31.01 Page 5 / 5