Electrical contacts CES-CESA-CEI / Amplifier relay AREB-AYRA General Electrical contacts can be fitted to our instruments with nominal diameters 100, 150, 160 mm. They are adjustable from 10% to 90% of F.S. The overall dimensions, mounting and switching arrangements, operating limits (pressure and temperature) are all given in the corresponding documentation for each series of equipment. Various contact models : - dry contact - dry contact with magnet - inductive contact : CES (40xx) : CES A (50xx) : CEI (80xx) Various amplifier models - multifunction relay - Intrinsically safe relay : AREB : AYRA Specifications Contact material : During their use, electrical contacts are subjected to a varying degree of wear, depending on their operating conditions, under the effect of mechanical stresses, the effect of electrical arc and heating. The choice of material for contacts must allow for the specific operating conditions. Standard material is a Ag 80-Ni 20 alloy. It has a high resistance to the electric arc effect (sparking). Oil filled version (not available for differential pressure gauges) : When a gauge is to be oil filled, CES A or CEI contacts must be used. The gauge must be filled with silicon oil (BH3). The power switching capacity is significantly reduced. It is then necessary to use a relay. CAUTION : For use with OXYGEN, use filling fluid BH5 (not available for differential pressure gauges). 1 contact (4001) (5001) (8001) 2 Min (4002) (5002) (8002) 2 contacts Two wire supply 1 Max CES Contact open above the set point Inter Index Closed Contact closed inside area determined by the 2 set points open outside Inter Index Opendes Contact open inside area determined by the 2 set points closed outside CESA 21 Min-Max Contact closed above the set point (4021) (5021) 22 Min-Min 2 contacts CEI Three wire supply CES-CESA CESA Four wire supply CEI CES Contact block control function CES - CESA - CEI (4022) (5022) 11 Max-Max (4011) (5011) 12 Max-Min (4012) (5012) Contact block control function CES - CESA - CEI First contact open second contact closed above the set point First and second contacts open above the set point First and second contacts closed above the set point First contact closed second contact open above the set point very thick black sector : closed contact very fine sector : open contact www.baumer.com/process Design and specifications subject to change without notice Data Sheet A21.33 Page 1 Dry electrical contacts CES Applications These contacts are used when normal service conditions require a low switching power. This type of contacts requires vibration-free installation and cannot be used with liquid filled gauges. In aggressive environments use CEI inductive contacts + AREB amplifier relay. Dry electrical contacts with magnets CES A Applications These contacts are used in practically all service conditions. They are, to a very great extent, insensitive to vibrations. They can be used with liquid filled instruments. Technical characteristics CES-CES A Recommended power ratings for resistive and inductive loads under mormal use. Magnetic contact CES A Contact CES inductive inductive Resistive load Resistive load load load Voltage dc V ac V dc mA ac mA 220 110 48 24 230 110 48 24 40 80 120 200 45 90 170 350 ac cos >0.7 mA 25 45 70 100 ac cos>0.7 mA dc mA ac mA 100 200 300 400 120 240 450 600 65 130 200 250 Load limits for resistive and inductive loads under mormal use. Magnetic contact CES A Contact CES 61 – 300 V 61 – 300 V Nominal insulation voltage U l Nominal service voltage Ueff max 250 V 250 V Nominal service current : Circuit closing current Circuit opening current Permanent current load 0.7A 0.7A 0.6A 1.0A 1.0A 0.6A 10W 18VA 30W 50VA Switching power Minimum power values for contacts - resistive and inductive loads under mormal use. Contact CES 24V Nominal service voltage Ueff max Magnetic contact CES A 24V (*12V) 0.4W 0.4VA 0.4W 0.4VA Switching power * Gold contact version NOTE: As a general rule we recommend that the use of a relay type AREB, and for gauges filled with liquid and magnetic contacts, it is essential to use a relay. Cable identification 1 MAXI 2 1 5 11 MAXI MAXI 2 3 3 SPDT 2 MINI 1 5 2 2 1 5 12 MAXI MINI 2 3 1 5 1 INVERSEUR 3 3 5 21 MINI MAXI 2 www.baumer.com/process Design and specifications subject to change without notice 3 1 5 INTER INDEX 1 5 2 3 22 MINI MINI 2 3 5 45 6 3 2 1 1 5 Data Sheet A21.33 Page 2 Inductive electrical contacts CEI Applications in none hazardous area CEI contacts are used in a highly vibrating environment. They are spark, overheating or wear proof. They must be used with a AREB amplifier relay (intrinsic safety). Applications in hazardous area (ATEX) CEI contacts are used in explosive atmosphere and hazardous area. They are spark, overheating or wear proof. They must be used with a AYRA amplifier relay. Glass window LCIE 03 ATEX 6402X CE 0081 II 2 G Ex ia IIC T6 or T5 or T4 Pressure gauge / Thermometers Relay - Amplifier - Barrier No hazardous area Hazardous area 1 and 2 Polycarbonate window power supply LCIE 03 ATEX 6402X CE 0081 out put II 2 G Ex ia IIA T6 or T5 or T4 For an intrinsically safe installation it is important that only certified accessories are used Technical characteristics For each inductive independant contact : U nominal 8 Vdc - Current consumption ≥ 3 mA - Ci = 30 nF, Li = 100 uH This equipment must only be associated to IS certified apparatus, and this combination must be compatible as regards intrinsic safety. In order to ensure temperature classification and keep safety, the power supply linear characteristics should not exceed none of the following values for each inductive contact : Power supply A Power supply B Power supply C Power supply D Ui ≤ 16 V Ui ≤ 16 V Ui ≤ 16 V Ui ≤ 16 V Ii ≤ 25 mA Ii ≤ 25 mA Ii ≤ 52 mA Ii ≤ 76 mA Pi ≤ 34 mW Pi ≤ 64 mW Pi ≤ 169 mW Pi ≤ 242 mW Temperature classification T6 T6 T5 T6 T5 T4 T6 T5 T4 Temperature classification SJ2N -20°C ≤ ≤ +70°C -20°C ≤ ≤ +67°C -20°C ≤ ≤ +70°C -20°C ≤ ≤ +45°C -20°C ≤ ≤ +60°C -20°C ≤ ≤ +70°C -20°C ≤ ≤ +30°C -20°C ≤ ≤ +45°C -20°C ≤ ≤ +57°C SJ2SN -40°C ≤ ≤ +70°C -40°C ≤ ≤ +66°C -40°C ≤ ≤ +70°C -40°C ≤ ≤ +45°C -40°C ≤ ≤ +60°C -40°C ≤ ≤ +70°C -40°C ≤ ≤ +30°C -40°C ≤ ≤ +45°C -40°C ≤ ≤ +57°C 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. Cable identification 2 Mini 1 Maxi 2 1 21 1 2 12 21 Mini/Maxi 22 Mini/Mini 111 Maxi/Maxi/Maxi 112 Maxi/Maxi/Mini 14 32 211 Mini/Maxi/Maxi 13 42 212 Mini/Maxi/Mini 246 531 221 Mini/Mini/Maxi 245 631 222 Mini/Mini/Mini 146 532 145 632 www.baumer.com/process Design and specifications subject to change without notice 136 542 135 642 11 Maxi/Maxi 12 Maxi/Mini 24 31 121 Maxi/Mini/Maxi 23 41 122 Maxi/Mini/Mini 235 641 236 541 45 6 3 2 1 1:2:+ contact 1 3:4:+ contact 2 5:6:+ contact 3 Data Sheet A21.33 Page 3 Electrical connector Item Junction box Connector Connector thread1) Connection illustration Position of connector left side right side back left side back left side back Number of pins in electrical connector 6 6 6 7 7 7 7 Cable gland M20 x 1.5 M20 x 1.5 M20 x 1.5 M20 x 1.5 M20 x 1.5 Pg 11 Pg 11 Wire cross-section max. 2.5 max. 2.5 max. 2.5 max. 2.5 max. 2.5 max. 2.5 max. 2.5 Degree of protection (EN 60 529) IP 65 IP 65 IP 65 IP 65 IP 65 IP 65 IP 65 Code 4710 4711 4715 4712 4716 4726 4721 Standard Option Option Option Option Option Option www.baumer.com/process Design and specifications subject to change without notice Data Sheet A21.33 Page 4 Multifunction Amplifier Relay - Not for ATEX use Specifications Case Output Polyamide 6.6 Overall dimensions - mounting : see below. Power supply Standard : 230 Vac 50-60 Hz + 6% Options : 115 Vac - 10% 40-60 Hz 24 Vcc + 6% - 10% Consumption 2.5 VA Reversing contact relay; rupturing capacity Max. 8A - 250 V - 2000 VA Mini. 0,1A - 24 Vcc Operating temperature 0 ... 70° C Protection IP 20 Relay dimensions AREB (24 Vcc - 110 Vac - 220 Vac) Attachment : on rail DIN 50022 or by 2 screws AREB 1 treshold 250g AREB 2 tresholds 280g Ordering details - relay Family Accessories Relay MSR 1´ digit AREBxDx A 2´...4´ digit REB Power supply Standard 220 Vac Option 110 Vac Option 24 Vcc 5´ digit Attachment on rail DIN Montage sur rail DIN 6´ digit D Control functions 1 treshold 2 tresholds 7´ digit 1 2 A D F www.baumer.com/process Design and specifications subject to change without notice Data Sheet A21.33 Page 5 Intrinsically Safe Amplifier Relay - For ATEX use Specifications Control circuit CE 0102 Case II (1) GD Ex ia IIC Noryl auto-extinguishable Overall dimensions - mounting : see below. Power supply Standard : Options : Consumption 220 Vac ± 15%, 45-60 Hz 110 Vac ± 15%, 40-60 Hz 24 Vcc Output Reversing contact relay; rupturing capacity 4A - 250 V - 500 VA Operating temperature -20 ... 60° C Protection IP 30. Max. RSI pressure gauge distance : 3000 m. (Max. R in line 100 Ω). 1.5 VA Relay dimensions AYRA (220 Vac-110 Vac) Attachment : on rail DIN 50022 or by 2 screws 390 g 410 g CE certificate N° PTB 02 ATEX 2065 Relay dimensions AYRA (24 Vcc) 1 contact 2 contacts DIN-rail mounting DIN-rail mounting 150 g DIN-rail mounting DIN-rail mounting Attachment : on rail DIN 50022 300 g CE certificate N° PTB 00 ATEX 2080 Relay codification Family Accessories Relay RSI (intrinsically safe) 1´ digit AYRAxDx A 2´...4´ digit YRA Power supply Standard 220 Vac Option 110 Vac Option 24 Vcc 5´ digit Attachment on rail DIN Attachment on rail Din 6´ digit D Control functions 1 treshold 2 tresholds 7´ digit 1 2 A D F www.baumer.com/process Design and specifications subject to change without notice Data Sheet A21.33 Page 6 UK/11-2008 This data sheet may only be reproduced in full 2 contacts 1 contact