Explosion protected add-on thermostat

Transcription

1 Dt Sheet Pge 1/7 Explosion protected dd-on thermostt ATH-EXx type series Prticulrities 10 A contct rting cn be directly fitted in zone 1, 2, 21 nd 22 optionl -50 C used Control rnges from -20 to +500 C re possible Brief description Explosion protected dd-on thermostts of the ATH-EXx type series control nd monitor therml processes nd cn be directly used in explosive res - Zone 1 nd Zone 21. The devices re vilble s temperture monitor TW, temperture controller TB, brek-proof temperture monitor STW nd brek-proof sfety temperture limiter STB. The thermostts operte ccording to the fluid or gs expnsion principle. The electricl switching element is pressure resistnt encpsulted microswitch. ATH-EXx-.. Version s per DIN EN 14597: TW Temperture monitor TB Temperture limiter STW Brek-proof temperture monitor STB Brek-proof sfety temperture limiter Ex identifiction II 2G Ex ed IIC T5 or T6 II 2D Ex td A21 IP65 T95 C or T80 C for explosive gs tmosphere for explosive dust tmosphere Explosion protection II 2G II 2D Device group II, ctegory 2, equipment for explosive gs tmosphere Device group II, ctegory 2, equipment for explosive dust tmosphere Approvl/pprovl mrks (see Technicl Dt)

2 Dt Sheet Pge 2/7 Technicl Dt Switching function Temperture monitor TW nd brek-proof temperture monitor STW If the temperture exceeds the set point vlue set on the temperture probe, the microswitch will be tripped by the trnsmission mechnics nd the current circuit opened or closed. The microswitch is reset to its originl sttus once the set point vlue set is gone below (by the hysteresis). Restrt lock for temper-ture limiter TB nd brek-proof sfety temperture limiter STB If the temperture exceeds the limit vlue set on the temperture probe, the current circuit is opened nd the microswitch mechniclly locked. The microswitch cn be mnully unlocked, once the dngerous temperture drops by pprox. 10 % of the scle rnge (pprox. 15% with limit vlue setting > 350 C). Self-monitoring for brek-proof temperture monitor STW nd brek-proof sfety temperture limiter STB If the mesuring system is destroyed, i.e. if the expnsion fluid escpes, the pressure in the diphrgm of the STB nd STW drops nd permnently opens the current circuit. Unlocking is no longer possible. If the probe hs cooled down to temperture specified in the control rnge tble, e.g. below -20 C, the current circuit is lso opened. If the temperture exceeds -20 C, the STB must be unlocked mnully first. The STW utomticlly restrts. Control rnges nd probe tble Control rnge Switching point ccurcy in the upper third of the scle rnge mximum cpillry length mximum probe temper-ture s per DIN EN STW + STB open t probe temperture Probe length "L for "d = 6 mm in C TW, TB STW, STB in mm in C under C TW, TB STW, STB K -2 K -4 K -3 K -6 K -7 K -10 K -15 K -19 K -3.5 K -2.5 K -5 K -4 K -8 K -8.5 K K -19 K -24 K Offset of the switching point ccurcy to different scle rnge is possible upon customer request. Cpillry nd temperture probe Type Scle limit vlue Cpillry 1.5 mm Temperture probe ATH-EXx-.. up to 200 C Copper (Cu) mteril No tin-plted Cpillry length minimum bending rdius of the cpillry up to 300 C up to 500 C Stinless steel (CrNi) mteril No stndrd 1000 mm, mximum 5000 mm 5 mm Copper (Cu) mteril No hrd soldered, tin-plted Stinless steel (CrNi) mteril No

3 Dt Sheet Pge 3/7 Electricl dt Switching element TW, STW TB, STB mximum contct rting pressure resistnt encpsulted microswitch with chnge-over contct Terminl 1-4: (N/C contct) AC-1: 230 V +10%, 10 A AC-15: 230 V +10%, 2 A Terminl 1-2: (N/O contct) AC-1: 230 V +10%, 5 A AC-15: 230 V +10%, 0.8 A pressure resistnt encpsulted microswitch with N/C contct, restrt lock nd dditionl signl contct Terminl 1-4: (N/C contct) AC-1: 230 V +10%, 16 A AC-15: 230 V +10%, 2 A Terminl 1-2: (N/O contct) AC-1: 230 V +10%, 10 A AC-15: 230 V +10%, 1.5 A Electricl connection 5-pole terminl strip suitble for cble cross section up to 2.5 mm 2 Operting dt Hysteresis in % of the control / limit vlue rnge Ambient temperture influence bsed on the control / limit vlue rnge Rnges with scle limit vlue 350 C Rnges with scle limit vlue > 350 C Switching function Rted vlue Possible ctul vlue Switching function Rted vlue Possible ctul vlue TW TW STW STW When the mbient temperture on the cse devites from the clibrtion mbient temperture 22 C, switch point offset occurs. Higher mbient temperture = lower switching point Lower mbient temperture = higher switching point Add-on thermostts with scle limit vlue < 200 C 200 C 350 C > 350 C 500 C TW / TB STB / STW TW / TB STB / STW TW / TB STB / STW Influence on the switch hed 0.08%/K 0.17%/K 0.06%/K 0.13%/K 0.14%/K 0.12%/K Influence on the cpillry per metre 0.047%/K 0.054%/K 0.09%/K 0.11%/K 0.04%/K 0.03%/K Permissible storge temperture C ( C for TZ 679) dmissible mbient Cpillry Switch hed Mx operting temperture temperture during use C T6 T5 of the cble screw-connection for the TZ 679: +70 C mx. +40 C +40 C mx. +55 C +55 C min. -20 C ( -50 for TZ 679) Rted position s per DIN , NL 0 to NL 90 (different rted positions (NL) on request) Cse Mteril ATH-EXx-7 0 ATH-EXx-70 Polyester cse, glss fibre reinforced, blck (option: luminum) Limit vlue cn be set on the set point vlue setter fter removing the cse lid. Limit vlue cn be set on the set point vlue setter fter removing the cse lid. The set point vlue setter must be subsequently seled by the fitter to secure the set limit vlue. Protection type EN IP 65 Cble inlet Ex cble screw connection M 20 x 1.5, seling rnge 6-12 mm Switch hed is fstened with 4 screws once the cse lid is removed Weight pprox. 1.2 kg

4 Dt Sheet Pge 4/7 Process connection Type series ATH-EXx-.. with cpillry Mteril of sheths 20 Fitting length S Immersion tube plin cylindricl probe 10 (stndrd) Sheth 20 (on request) Screw-in sleeve with screw-in spigot G 1/2 form A s per DIN 3852/2 nd clmping piece with locking screw to lock the probe up to +150 C CuZn, nickel-plted, stndrd; over +150 C s stndrd CrNi Stndrd lengths: 100, 120, 150, 200 or 300 mm (different lengths on request) D = 8 mm For different process connections nd sheths see dt sheet (only 20, 21, 60 nd 65). Approvls/pprovl mrks Types Switching function Certifictes/test certificte Inspections TW 0 STW ATH-EXx-7 TB ATH-EXx-7-F TB PTB 03 ATEX 1187 ATEX ATH-EXx-70 STB ATH-EXx-70-F STB Limit vlue permnently fctory-set nd seled. Ignition protection clss Exed Ex Generl regultions EN e incresed sfety Europen Stndrd EN d pressure resistnt encpsultion EN IIC Gs group T6 Temperture clss IP 65 T 80 C Use in flmmble dust Europen Stndrd IP 65 Protection clss s per EN IP65 T 80 C mx. dmissible surfce temperture (use in flmmble dust) EN EN Note Physicl nd toxic fetures of the expnsion mens, which could emerge in the event of mesuring system brek. Control rnge with scle limit vlue Wiring digrms Hzrdous rections Fire nd explosion hzrd Ignition temperture Explosion limit hzrdous to wters irritnt Informtion bout toxicology dngerous to helth +200 C +355 C 0.6-8V% yes yes +200 C no +490 C C no 0.6-8V% no no no There is currently no sttement by the helth uthority concerning hzrds to helth in the event of short-term exposure nd low concentrtion, e.g. mesuring system brek. ATH-EXx-.. toxic no / 0 ATH-EXx-7 / ATH-EXx-70

5 Dt Sheet Pge 5/7 Dimensions ATH-EXx-.. (1) = Ex cble screw connection M20x1.5x6-12 (2) = Ex cble screw connection For different process connections nd sheths see dt sheet (only 20, 21, 22, 60 nd 65) with spirl probe 15 (only for control rnge C, C nd C) (1) = Ex cble screw connection M20x1.5x6-12 (2) = Ex cble screw connection Stock versions Prt No. Type Control rnge (CR) C Probe 60/ Spirl probe 15

6 Dt Sheet Pge 6/7 Order detils Explosion-protected dd-on thermostt, type series ATH-EXx-.. Order code ( 1 ) Bsic type dd-on thermostt for explosive res, type series ATH-EXx ( 2 ) Bsic type extensions 02 Temperture monitor TW 20 0 Brek-proof temperture monitor STW 07 ATH-EXx-7 Temperture limiter TB 70 ATH-EXx-70 Brek-proof sfety temperture limiter STB ( 3 ) Control / limit vlue rnges C ( 4 ) Cpillry length mm mm mm mm mm.... (Specil length, specifictions in plin text in mm) ( 5 ) Cpillry mteril 20 CrNi Stinless steel (1.4571) 40 Cu Copper, tin-plted (only possible up to 200 C) ( 6 ) Process connection (PC) 10 plin cylindricl probe (stndrd) 15 Spirl probe (only t C, C nd C) 20 Screw-in sleeve ( 7 ) Thred of process connection 00 without thred (process connection 10) 13 Externl thred G 1/2 ( 8 ) Mteril of process connection 00 only with process connection CuZn (Brss up to 150 C) 20 CrNi (Stinless steel )

7 Dt Sheet Pge 7/7 ( 9 ) Fitting length "S" (immersion tube length) 000 ATH-EXx-.. without sheth mm mm mm mm mm mm ( 10 ) Dimeter "D" (immersion tube dimeter) 00 ATH-EXx-.. without sheth 8 8 mm ( 11 ) Dimeter "d" (probe dimeter) 6 6 mm ( 12 ) Extr codes 000 without extr codes 520 Limit vlue permnently fctory-set nd seled (only TB + STB) 679 Operting tempertures up to -50 C Stte extr codes one fter nother, seprted by comms. Order code ( 1 ) ( 2 ) ( 3 ) ( 4 ) ( 5 ) ( 6 ) ( 7 ) ( 8 ) ( 9 ) ( 10 ) ( 11 ) ( 12 ) / /,... Order exmple / / 000,... Stte extr codes one fter nother, seprted by comms.