RT2E Compact temperature switch Explosion proof Main Features Excellent repeatability Dead band adjustment for regulation Fix dead band for control and alarm Light weight Explosion proof Hazardous areas 1, 2, 21, 22 Applications Power generation safety equipment Water treatment Valve and compressor control Technical Data Temperature range -46 ... 0 °C to 160 ... 250 °C Temperature Process : Ambient : Storage : -46 ... +250 °C -20 ... +70 °C (T5) -20 ... +60 °C (T6) -40 ... +70 °C Repeatability ± 1% F.S. / constant temperature cycle CE conformity Low Voltage Directive LVD 2006/95/EC ATEX Directive 94/9/EC Protection rating IP 66 (EN 60529) Process connection Stainless steel 1.4404 (316L) Bulb Stainless steel 1.4404 (316L) bulb Ø 9.5 mm Scale Internal graduated scale Weight 2.00 kg + transmission Housing Grey painted aluminum housing Explosion proof Mounting Wall mounting 2 x M6 x 16 screws Ground connection Via internal or external terminal block Electrical connection Via internal terminal block with cable gland 3/4 NPT certified ATEX for Ø7 to 12 mm cable Electrical function See ordering code details page 5 Adjustment Internal adjustment possible for set point and dead band Type examination certificate LCIE 02 ATEX 6219X EN 60079-0: 2012 (internal conformity analysis) EN 60079-1: 2007 EN 60079-31: 2009 Marking 0081 II 2 G D Ex d IIC T6 or T5 Gb Ex t IIIC T80 °C or T95 °C Db IP6X ATEX Code SETP Mounting on 2" pipe Code 0407 Stainless steel tag plate and wire Code 9941 2015-10-19 Customer specific set point adjustment Design and specifications subject to change without notice Options www.baumer.com Data sheet B31.02 Page 1 / 5 RT2E Compact temperature switch Explosion proof 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 P T°C 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 speciffic 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 (as needed) when using an adjustable dead band switch NC C NC NC C C NO NO NO Adjustable ranges Micro-switch dead band 1) Adjustable dead band T max °C °C -46 ... 0 40 -20 ... 20 60 Fixed dead band R Code L M-P U (2 x SPDT) 10% 90% 10% 90% 10% 90% 10% 90% °C °C °C °C °C °C °C °C 40 4 - 7.5 2.5 - 6.5 1 1 5 4 5 5 41 2.5 - 5.5 2 - 6.5 1 1 5 4 5 5 42 3-6 2.5 - 7 1 0.5 3.5 3 5 2.5 5 0 ... 45 80 40 ... 120 145 43 5.5 - 10.5 3 - 8.5 1.5 1 6 6 7.5 100 ... 180 190 44 6 - 12 4 - 7.5 1.5 1 7 5.5 7.5 5 6.5 - 12.5 4-8 2 1.5 11 11 10 7.5 20 ... 90 120 45 160 ... 250 290 46 6 - 11 4 - 11 1.5 1 6.5 5 7.5 5 70 ... 150 175 48 9.5 - 18.5 5.5 - 10.5 1.5 1.5 11 8 7.5 7.5 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 correspond to the dead band spring totally released and the higher correspond 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%. 2015-10-19 1) Design and specifications subject to change without notice Scale www.baumer.com Data sheet B31.02 Page 2 / 5 RT2E Compact temperature switch Explosion proof Micro switches characteristics Switch code R L M P U Fixed dead band Type Adjustable dead band Standard Gold contact Ultra sensitive Double 6 Vdc 0.4 ... 10 A N/A 10 ... 50 mA 0.4 ... 4 A 0.4 ... 10 A 12 Vdc 0.4 ... 10 A N/A 10 ... 50 mA 0.4 ... 4 A 0.4 ... 10 A 24 Vdc 0.4 ... 5 A N/A 10 ... 50 mA 0.4 ... 4 A 0.4 ... 6 A 30 Vdc 0.4 ... 5 A N/A 10 ... 50 mA 0.4 ... 2 A 0.4 ... 6 A 48 Vdc 0.4 ... 5 A N/A 10 ... 50 mA N/A 0.4 ... 6 A 110 Vdc 0.1 ... 0.5 A N/A 10 ... 50 mA N/A 0.4 ... 0.5 A 220 Vdc 0.1 ... 0.25 A N/A 10 ... 50 mA N/A 0.1 ... 0.25 A 115 Vac 0.4 ... 10 A 0.4 ... 10 A 10 ... 50 mA N/A 0.4 ... 10 A 250 Vac 0.2 ... 10 A 0.2 ... 10 A N/A N/A 0.2 ... 10 A 2000 V 2000 V 2000 V 1000 V 2000 V Dielectric rigidity between contacts and ground Electrical connections 2 SPDT 1 SPDT NC Blue COM Red NO White NC Blue COM Red NO Yellow / green NC COM NO White Blue Hazardous areas : zone 1, 2, 21, 22 -20 °C ≤ Ta ≤ +70 °C Dust IP65 Gases T° surface Class Ta = 60 °C 80 °C T6 Ta = 70 °C 95 °C T5 Red White Yellow / green Important : Maximum power dissipation in the case must not exceed 5 W 2015-10-19 Design and specifications subject to change without notice All necessary measures must be taken by the user, to avoid the calorific transfer from the fluid to the apparatus head increasing the head's temperature to such that it reaches the self-ignition temperature of the gas in which it is used. www.baumer.com Data sheet B31.02 Page 3 / 5 RT2E Compact temperature switch Explosion proof Dimensions (mm) Temperature switches with capillary Direct mount temperature switches S = Bulb length (temperature sensitive part) A = Additional stem length (min. 25 mm) P = Immersion length (P = S + A) 2 fixing holes for M6 screw K = Capillary length (only TD1, TD2, TD3) E = Extension between process connection and housing only TRDE1 and TRDE2 For version TD1 there is no additional stem length (A = 0). The sliding connection is mounted on the capillary. ATEX certified Cable gland (not mounted) K ±2% E Ø 44 K ±2% A A Ø 2,6 Ø8 Ø8 Ø8 P ±3 P ±3 Ø 9,5 S S TRDE Ø 9,5 TD1 Stainless steel sliding male connection (TD2/3, TRDE1/2) Clamping ring TD2 TD3 Stainless steel sliding male connection (TD1) Thread and sizes A Clamping nut Process connection S 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. 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 Design and specifications subject to change without notice Bulb length (S) according to the capillary length (K) and the temperature range (code) 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 2015-10-19 Versions with S = 150 mm or S = 200 mm are not feasible with P = 150 mm www.baumer.com Data sheet B31.02 Page 4 / 5 RT2E Compact temperature switch Explosion proof Ordering details RT2E RT2 Model Compact temperature switch RT2 Approvals ATEX Explosion proof Pressure switches 1 SPDT standard change over switch 1 SPDT gold contact change over switch 1 SPDT hermetically ultra sensitive change over switch 1 SPDT change over switch with adjustable dead band 2 SPDT double change over switch . / . – E L M P R U . 40 41 42 43 44 45 46 48 (not for TRDE1) (not for TRDE1) (not for TRDE1) 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 below) . 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 / Ordering example with options RT2 – E L . 40 . 2 1 3 C 3 / 9941 www.baumer.com 2015-10-19 Compact temperature switch ATEX Explosion proof 1 SPDT standard change over switch Temperature range -46 ... 0 °C Transmission TD2 Capillary 1 meter Immersion length 150 mm Bulb Ø 9.5 mm Process connection G 1/2 Option : Stainless steel tag plate and wire 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 – Data sheet B31.02 Page 5 / 5