RTNA3 - RTAA3 Industrial temperature switch, direct mounting Main Features Excellent repeatability Dead band adjustment for regulation Fix dead band for control and alarm Applications Power generation safety equipment Technical Data Temperature range Temperature -46 ... 0°C to 40 ... 120°C Mounting Direct mounting or with wall mounting braket Process : Ambient : Storage : Ground connection Via internal terminal block Electrical connection Terminal block with plastic cable gland for Ø 7 to 10.5 mm -46 ... +120°C -30 ... +55°C -40 ... +55°C Repeatability ± 1% F.S. @ constant temperature cycle CE conformity Low Voltage Directive LVD 2006/95/EC Electrical function See ordering code details on page 5 Protection rating IP 66 (EN 60529) Adjustment Process connection 2 external adjustment screws on top of the case for set point and dead band Scale RTA : Copper alloy RTN : Stainless steel 1.4404 (316L) RTA : Copper alloy RTN : Stainless steel 1.4404 (316L) Internal. Accuracy on reading ± 5% FS Weight 2 kg Cover Zamak blue painted Captive stainless steel screws Black Zamak Bulb Case Customer specific set point adjustment Code SETP Stainless steel tag plate and wire Code 9941 Lead seal of the adjustment screws Code 8990 Nuclear cleanliness (RTN only) Code 0838 Design and specifications subject to change without notice Options Electrical connection : stainless steel connector (Souriau) Code 2298 Code 2249 2015-04-21 Mobile plug for stainless steel connector (Souriau) www.baumer.com Data sheet B31.10 Page 1 / 5 RTNA3 - RTAA3 Industrial temperature switch, direct mounting Principle A vapour filled flexible sensing element actuates a microswitch by means of a lever. The set point is adjusted by means of a compressible spring installed in opposition. NC NC NC C 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 NC C NC NC C C NO 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 NO NO Electrical connections 2 SPDT NC Blue COM Red NO White NC Blue COM Red NO Yellow / green NC COM NO White Blue Red White Design and specifications subject to change without notice 1 SPDT 2015-04-21 Yellow / green www.baumer.com Data sheet B31.10 Page 2 / 5 RTNA3 - RTAA3 Industrial temperature switch, direct mounting Micro switches characteristics Switch code N (T) A (B) M (K) C (W) E (F) H D (V) J Type Tropicalized Standard Gold contact Hermetic Ultra sensitive Manual reset Ultra sensitive Hermetic Manual reset 6 Vdc 0.1 ... 8 A 0.4 ... 10 A 10 ... 50 mA 5 mA ... 4 A 0.4 ... 1 A N/A 0.4 ... 4 A N/A 12 Vdc 0.1 ... 8 A 0.4 ... 10 A 10 ... 50 mA 5 mA ... 4 A 0.4 ... 1 A N/A 0.4 ... 4 A N/A 24 Vdc 0.1 ... 8 A 0.4 ... 6 A 10 ... 50 mA 5 mA ... 4 A 0.4 ... 1 A 0.1 ... 8 A 0.4 ... 4 A 0.1 ... 8 A 30 Vdc 0.1 ... 8 A 0.4 ... 6 A 10 ... 50 mA 5 mA ... 3 A 0.4 ... 1 A 0.1 ... 8 A 0.4 ... 2 A 0.1 ... 8 A 48 Vdc 0.1 ... 8 A 0.4 ... 6 A 10 ... 50 mA 5 mA ... 3 A N/A 0.1 ... 8 A N/A 0.1 ... 8 A 110 Vdc N/A 0.1 ... 0.5 A 10 ... 50 mA 5 mA ... 1 A N/A N/A N/A N/A 220 Vdc N/A 0.1 ... 0.25 A 10 ... 50 mA 5 mA ... 0.5 A N/A N/A N/A N/A 115 Vac 0.1 ... 10 A 0.4 ... 10 A 10 ... 50 mA 50 mA ... 3 A 0.4 ... 10 A 0.1 ... 10 A N/A 0.1 ... 10 A 250 Vac 0.1 ... 5 A 0.2 ... 10 A 10 ... 10 mA 50 mA ... 2.5 A 0.2 ... 10 A 0.1 ... 5 A N/A 0.1 ... 5 A 2000 V 2000 V 2000 V 1500 V 2000 V 2000 V 1000 V 2000 V Dielectric rigidity between contacts and ground Adjustable ranges Micro-switch dead band 1) TMax Scale accidential Adjustable dead band Code N (T*) 10% °C A (B*) M (K*) 90% Fixed dead band C (W*) 10% E (F*) 90% 10% H 90% D (V*) J 10% 90% 2.5 °C 0 40 300 4-9 2-9 8 - 12 4 - 12 1.5 0.8 5 -20 ... 20 60 301 3-8 1.5 - 8 6 - 12 4 - 12 1 0.5 4 2 0 ... 45 60 302 4-9 2-9 7 - 12 4 - 12 1.5 0.7 5 2.5 40 ... 120 145 303 5 - 16 3 - 16 10 - 20 6 - 20 2 1.2 6 4 20 ... 80 100 315 5 - 12 3 - 12 9 - 15 5 - 15 2 1 6 3 -46 ... (*) For version with 2 microswitches lower values of the dead band must be multiplied x 1.5 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 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 Design and specifications subject to change without notice 1) www.baumer.com Data sheet B31.10 Page 3 / 5 RTNA3 - RTAA3 Industrial temperature switch, direct mounting Dimensions (mm) 76.5 = 125 = 58 130 100 28.5 64 144 139 5 45° 130 Thermowell 144 Thermowell for RTxx3 Stainless steel Ordering code : 10271317 20 Hex 29 22 G 3/8 70 103 P= 135 3/4 BSP.TR Ø 18X16 2015-04-21 Design and specifications subject to change without notice Ø 14 www.baumer.com Data sheet B31.10 Page 4 / 5 RTNA3 - RTAA3 Industrial temperature switch, direct mounting Ordering details RTNA3 - RTAA3 RT Model Industrial temperature switch RT Type of the bulb Copper alloy bulb Stainless steel bulb Approval Standard version without ATEX approval Type of micro switches 1 SPDT standard changeover switch 2 SPDT standard changeover switch 1 SPDT hermetically changeover switch 2 SPDT hermetically changeover switch 1 SPDT ultra sensitive changeover switch 2 SPDT ultra sensitive changeover switch 1 SPDT hermetically, ultra sensitive changeover switch 2 SPDT hermetically, ultra sensitive changeover switch 1 SPDT gold contact changeover switch 2 SPDT gold contact changeover switch 1 SPDT tropicalized changeover switch 2 SPDT tropicalized changeover switch 1 SPDT changeover switch, manual reset, opening on raising pressure 1 SPDT changeover switch, manual reset, opening on falling pressure – A A A . 3xx . E 0 0 E J / – A N A Deadband Adjustable Adjustable Adjustable Adjustable Fix Fix Fix Fix Adjustable Adjustable Adjustable Adjustable Fix Fix A B C W E F D V M K N T H J Temperature range (°C) -46... 0 -20 ... 20 0 ... 45 40 ... 120 20 ... 80 . 300 301 302 303 315 . Type of design Direct mounting (TRD) Capillary length Without capillary Stem length P P=135 mm Bulb diameter Ø 14 mm Process connection G3/8 Options to be added behind the / (see example below) E 0 0 E J / Ordering example with options RT – A A A . 300 . E 0 0 E J / SETP _ 9941 Design and specifications subject to change without notice Industrial temperature switch Copper alloy bulb Without ATEX approval 1 SPDT standard changeover switch Temperature range -46 ... 0 °C TRD direct mounting Without capillary Immersion length P=135 mm Bulb diameter Ø 14 mm Process connection G3/8 Option : Customer specific set point adjustment 2015-04-21 Option : Stainless steel tag plate and wire www.baumer.com Data sheet B31.10 Page 5 / 5