Thermocouple Thermometer omnigrad S- TC 88

Transcription

1 Technicl informtion TI 279T/02/en Thermocouple Thermometer omnigrd S- TC 88 Thermocouple ssembly with extension neck Replceble insert PCP ( ma), HART or PROFIBUS-PA electronics The TC 88 Omnigrd S rnge temperture sensors re thermocouples designed for use in the hevy chemicl industry, in pplictions with high pressures, tempertures nd high flows. They re equipped with thermowell tht must be purchsed seprtely. The TC 88 temperture sensors re mde up of mesurement probe, n extension neck with thermowell connection nd housing, which my contin the trnsmitter for the conversion of the vrible mesured. Thnks to its modulr configurtion, the TC 88 is suitble for ll industril processes with severe therml nd mechnicl stresses. Fetures nd benefits Customized immersion lengths Seprte extension neck Stinless steel, luminium or plstic housings, with protection grde from IP65 to IP67 Replceble minerl insulted insert, with dimeter of 3 or 6 mm PCP ( ma), HART nd PROFI- BUS-PA trnsmitters Thermocouple sensing element type K or J, DIN EN or ANSI MC96.1 Clss 1/specil ccurcy Single or double, grounded or ungrounded mesurement junction

2 omnigrd S TC 88 Ares of ppliction Chemicl industry Energy industry Function nd system design Mesuring principle The thermocouple thermometer s sensing element consists of two metl wires tht re homogeneous but different one from the other nd insulted long their entire length. The two wires re welded together t one end, known s the mesurement or hot junction. The other end, where the wires re free, is known s the cold or reference junction nd is connected to electromotive force mesurement circuit where the force is generted by the different thermoelectric power of ech of the thermocouple s wires if there is temperture difference between the hot joint (T1) nd the cold joint (Seebeck effect). The cold junction hs to be compensted with reference to the temperture of 0 C (T0). The function tht links the electromotive force to the tempertures T1 nd T0 is curve whose chrcteristics depend on the mterils used in the construction of the thermocouple. Some thermocouples curves, nd prticulrly those most relible for the purposes of industril redings, re those complint with stndrds DIN EN nd ANSI MC96.1. Equipment rchitecture The Omnigrd S TC 88 temperture sensor is mde up of mesurement probe, n extension neck with thermowell connection nd housing (hed), which my contin trnsmitter or the terminls on the cermic block for electricl connection. Construction of the sensor is bsed on the following stndrds: DIN (housing), (neck) nd (probe), nd cn therefore gurntee, together with suitble thermowell, good level of resistnce to the most typicl nd common industril processes. The mesurement probe (replceble insert) is tensioned by mens of springs nd therefore mintined in contct with the lower bse of protection thermowell to enhnce the het trnsfer. The sensing element (type K or J) is positioned close to the tip of the probe. The TC 88 cn be fitted on the plnt (tube or tnk) through the use of the connection to the thermowell, which cn be purchsed seprtely. The electricl structure of the thermometer lwys complies with DIN EN 60584/61515 or ANSI MC96.1/ASTM E585 stndrd rules. The sensing element is vilble in two versions: insulted hot junction or grounded hot junction. The housing cn be of different types nd mterils (plstic, pinted luminium lloy, stinless steel). The wy in which it fits to extension neck nd the cble glnd ensure minimum grde of IP65 (Ingress Protection). TR88_G_gd_07_xx_01 Fig. 1: The TC 88 with vrious types of heds. 2 EndressHuser

3 omnigrd S TC 88 Mteril Extension neck in SS 316Ti/ Insert sheth in SS 316L/ or Inconel 600 / Weight From 1 to 2.0 kg for stndrd options. Electronics The required type of output signl cn be obtined by choosing the correct hed-mounted trnsmitter. EndressHuser supplies "stte-of-the-rt" trnsmitters (the itemp series) built in 2-wire technology nd with 4 20 ma output signl, HART or PROFIBUS-PA. All of the trnsmitters cn be esily progrmmed using personl computer through the Red- Win 2000 nd FieldCre public domin softwre (for trnsmitters 4 20 ma nd HART ) or the CommuWin II softwres (for PROFIBUS-PA trnsmitters). The HART trnsmitters cn lso be progrmmed with the hnd-held operting module DXR 275 (Universl HART Communictor). In the cse of PROFIBUS-PA trnsmitters, EH recommends the use of PROFIBUS dedicted connectors. The Weidmüller type (Pg M12) is provided s stndrd option. For detiled informtion bout trnsmitters, plese refer to the relevnt documenttion (refer to the TI codes t the end of the document). If hed-mounted trnsmitter is not employed, the sensor probe cn be connected through the terminl block to remote converter (i.e. DIN ril trnsmitter). Performnce Operting conditions Ambient temperture (housing without hed-mounted trnsmitter) metl housings plstic housings Ambient temperture (housing with hed-mounted trnsmitter) Ambient temperture (housing with disply) Process temperture Depending on the type of thermowell used. Mximum process pressure nd mximum flow velocity Depending on the type of thermowell used. Shock nd vibrtion resistnce According to DIN EN C C C C 3 g pek / Hz Accurcy The tolernces set by the stndrds DIN EN nd ANSI MC96.1 re the following: Type of thermocouple DIN EN Clss Mx devition Clss Mx devition Cble colours J (Fe-CuNi) 2 /-2.5 C ( C) / t ( C) 1 /-1.5 C ( C) / t ( C) blck - white K (NiCr-Ni) 2 /-2.5 C ( C) / t ( C) 1 /-1.5 C ( C) / t ( C) green - white EndressHuser 3

4 omnigrd S TC 88 Type of thermocouple ANSI MC96.1 Clss Mx devition Clss Mx devition Cble colours J (Fe-CuNi) Stndrd /-2.2 C ( C) /-0.75% ( C) Specil /-1.1 C ( C) /-0.4% ( C) blck - red K (NiCr-Ni) Stndrd /-2.2 C ( C) /-0.75% ( C) Specil /-1.1 C ( C) /-0.4% ( C) yellow - red Note! ItI = bsolute temperture vlue in C Tble 1: Tolernces Trnsmitter mximum error See the corresponding documenttion (codes t the end of the document). Disply mximum error 0.1% of the set spn 1 digit Mesurement rnge The mesurement rnges defined in stndrds re shown in the following tble 2: Type of thermocouple DIN EN ANSI MC96.1 J C C K C C Tble 2: Mesurement rnges Response time Tests in wter t 0.4 m/s (ccording to DIN EN 60751; temperture vrition from 23 to 33 C): Dimeter 3 mm Dimeter 6 mm Type of hot junction t 50 t 90 t 50 t 90 grounded 0.8 s 2 s 2 s 5 s insulted 1 s 2.5 s 2.5 s 7 s Tble 3: Response times Insultion Insultion resistnce between terminls nd probe sheth > 1GΩ t 25 C (ccording to DIN EN 60584, test voltge 500 V) > 5 MΩ t 500 C 4 EndressHuser

5 omnigrd S TC 88 Instlltion Omnigrd S TC 88 thermometers cn be mounted on thermowells instlled on pipes, tnks or other plnt prts tht my require them. In the cse of ATEX-certified components (trnsmitter), plese refer to the relevnt documenttion (refer to the code t the end of this document). Immersion length my hve n effect on the ccurcy of the mesurement. If the immersion is too low, n error my be generted in the temperture recorded due to the lower temperture of the process fluid ner to the wlls nd het trnsfer, which tkes plce through the sensor stem. The incidence of such n error cn be not negligible if there is big difference between the process temperture nd the mbient temperture. In order to void this source of inccurcy, the thermowell should hve smll dimeter nd the immersion length (L) should be, if possible, t lest 100 mm. In pipes of smll section the xis line of the duct must be reched nd if possible slightly exceeded by the tip of the probe (refer to fig. 2A-2B). Insultion of the outer prt of the sensor reduces the effect produced by low immersion. Another solution my be tilted instlltion (see fig. 2C-2D). L L TR88_g_id_07_XX_01 Fig. 2: Instlltion exmples With regrd to corrosion, it is very importnt to choose the correct bse mteril for the thermowell; EndressHuser offers wide rnge of thermowells suitble for ll kinds of pplictions. For further informtion on specific pplictions, plese contct the EH Customer Service Deprtment. In the cse tht the sensor components re disssembled, in the following ressembly procedure the definite torques must be employed. This will ssure the housings with the IP grde protection defined. In enviroments with the presence of strong electromgnetic noise, the grounded hot junction is not recommended, becuse of the possible interferences which might be generted on the thermocouple wires. Upon request, the Customer Service of EH cn verify through clcultion the resistnce of thermowells t specific operting conditions (pressure, temperture, fluid velocity) tking into ccount lso the forces nd vibrtions generted by the flow. EndressHuser 5

6 omnigrd S TC 88 System components Housing The housing, which contins the electric terminls or the trnsmitter, is vilble in different types nd mterils, e.g. plstic, pinted luminium lloy nd stinless steel. The coupling method with the rest of the probe nd the glnd for the cble entry ensures minimum IP65 grde (refer lso to fig. 3). All vilble heds hve internl geometry ccording to DIN stndrd (form B), nd thermometer connection M24x1.5. Hed type TA20A is the bsic EH luminium housing for temperture sensors. It is supplied in the EH corporte colours, without ny extr chrge. Hed TA20B is blck polymide housing, sometimes referred to s the BBK in the Temperture mrket. A screw cp is employed in TA21E nd is joined to the hed body by chin.the TA20D hed (luminium), lso referred to s BUZH, is ble to contin terminl block nd trnsmitter or two trnsmitters t the sme time. The order of the double trnsmitter must be crried out by choosing the option "flying wires" in the sles structure, nd two trnsmitters in seprte position (THT1, see the tble t the end of the document). The TA20J hed is stinless steel housing used in other instruments mde by EH nd cn be provided with LCD disply (4 digits), which opertes with 4 20 ma trnsmitters. The TA20R is in stinless steel s well. The TA20W (BUS type) is round blue/grey coloured hed mde of luminium, with clip for the cp closure. The cble glnd M20x1.5 provided with the housings, is comptible with cbles of dimeter between 5 nd 9 mm. Housing type IP Housing type IP Housing type IP Housing type IP TA20A TA20A_g_dd_00_xx_ TA20B 65 TA20R TA20B_g_dd_00_xx_01 79 Ø55 TA20R_g_dd_00_xx_01 TA20W TA20W_g_dd_00_xx_01 TA20J TA20J_g_dd_00_xx_01 TA20J (disply) TA20J_g_dd_00_xx_02 TA20D 66 TA21E TA20D_g_dd_00_xx_01 95 Ø 80 TA21E_g_dd_00_xx_01 Fig. 3: Housings nd reltive IP grde Hed trnsmitter The hed-mounted trnsmitters vilble re (lso refer to the section Electronics ): TMT 181 PCP 4 20 ma TMT 182 Smrt HART TMT 184 PROFIBUS-PA. The TMT 181 is PCP progrmmble trnsmitter (see fig. 4). The TMT 182 output consists of 4 20 ma nd HART superimposed signls. For the TMT 184 (see fig. 5), with PROFIBUS-PA output signl, the communiction ddress my be set vi softwre or vi mechnicl dip-switch. The customer my specify the configurtion desired during the order phse. 6 EndressHuser

7 omnigrd S TC 88 Ø33 Ø44 1 Ø33 Ø Ø 6.5 Ø TMT181_g_gd_06_xx_01 Fig. 4: TMT Ø33 1 Ø44 Ø33 Ø Ø 6.5 Ø TMT184_g_gd_06_xx_01 Fig. 5: TMT 184 Extension neck The extension neck is the prt between the thermowell nd the hed. It is constituted by n 11 mm tube in SS 316L/ (fig. 6), whose stndrd length (E) cn be chosen mong the following vlues: 80 mm 100 mm 155 mm (normlly used for length L = 110 mm of thermowells DIN Form 4) 165 mm (normlly used for other lengths of thermowells DIN Form 4/4F) 200 mm. Other sizes re vilble on request. The connection situted in the upper prt of the neck llows for orienttion of the sensor hed. As illustrted by the chrt in figure 7, the length of the extension neck my influence the temperture in the hed. It is necessry tht this temperture is kept within the limit vlues defined in the prgrph "Operting conditions". SW24 M24x1.5 5 Ø22 E Ø11 Ø11 Ø11 Ø G½ SW ½ NPT SW M14x1.5 SW M18x1.5 SW 24 TC88nk_G_dd_15_xx_01 Fig. 6: Extension neck in different versions EndressHuser 7

8 omnigrd S TC 88 C Hed heting bove mbient Extension neck length Process temperture mm 800 C 620 C 430 C 250 C Grfic_g_gd_05_en_19 Fig. 7: Heting of the hed consequent to the process temperture Thermowell connection Probe Avilble in stndrd versions: M14 x 1.5 (normlly used for thermowells DIN Form 4/4F with dimeter of 18 mm) M18 x 1.5 (normlly used for thermowells DIN Form 4/4F with dimeter of 24 mm) G 1/2 B ISO /2 NPT ANSI B2.1. Other versions my be supplied upon request. Figure 6 shows the bsic dimensions of the threded connections vilble from the sles structure (see prgrph "Ordering informtion" t the end of this document). In the TC 88 the mesuring probe is mde up of minerl (MgO) insulted insert positioned inside the thermowell. The insert length is vilble in the stndrd dimensions DIN nd in the most commonly used ones, or it cn be personlized by the customer within rnge of vlues (refer to "Sles Structure" t the end of the document). The immersion length (ML) must be chosen in complince with the totl length of thermowell (A) nd of the type of thermowell used; see the following tble (vlid for thermowell bse with stndrd thickness): Type of thermowell ML Type of thermowell ML Type of thermowell ML TA 535 ML = A TW 15 ML = A (L) TA 570 ML = A - 3 TA 540 ML = A - 2 TA 560 ML = A - 3 TA 571 ML = A - 3 TA 550 ML = A - 3 TA 562 ML = A - 3 TA 572 ML = A - 3 TA 555 ML = A - 2 TA 565 ML = A - 3 TA 575 ML = A - 3 TA 557 ML = A - 2 TA 566 ML = A - 3 TA 576 ML = A - 2 For thermowells with non stndrd end thickness (D), use the following formul: ML = A - D 3. For replcement, the length of the insert (IL) must be chosen using the formul: IL = ML E EndressHuser

9 - omnigrd S TC 88 A ML E 10 NPT GAS GAS mv IL M4x1 - Ø42 Ø Ø44 Ø33 M4x1 Ø ma Ø33 Ø42 mv - Ø6 Ø6 Ø3 TC88_g_dd_07_xx_01 Fig. 8: Functionl components The use of stndrd dimensions (extension neck nd length of immersion) llows for the use of the inserts on sensors of different kinds nd gurntees rpid delivery times; this llows our customers to reduce the mount of spre prts to be kept on stock. 1 x TC 2 x TC - TC 1 TC 1 - TC 2 Wiring_G_gd_06_xx_01 Fig. 9: Stndrd wiring digrms (cermic terminl block) EndressHuser 9

10 omnigrd S TC 88 Certifictes & Approvls PED pprovl Mteril certifiction Test report The Pressure Equipment Directive (97/23/CE) is respected. As prgrph 2.1 of rticle 1 is not pplicble to these types of instruments, the 4 mrk is not requested for the TC 88 destined for generl use. Mteril certifictions cn be requested seprtely. With regrds to the tests nd clibrtion, the "Inspection Report" consists of complince declrtion for the essentil points of the stndrd DIN EN 60584/ANSI MC96.1 Further detils Mintennce The Omnigrd S thermometers do not require ny specific mintennce. In the cse of ATEX certified components (trnsmitter) plese refer to the corresponding specific relevnt documenttion (refer to the code t the end of the document). Delivery time For smll quntities (10 15 units) nd stndrd options, between 10 nd 15 dys depending on the configurtion required. 10 EndressHuser

11 omnigrd S TC 88 Ordering informtion Sles structure TC 88- Sfety (Ex) certifiction A Ex certifiction not required Hed mteril, conduit, IP grde A TA20A Aluminium, conduit M20x1.5, IP66/IP67 4 TA20A Aluminium, PROFIBUS connector, IP66 2 TA20A Aluminium, conduit 1/2 NPT, IP66/IP67 7 TA20B Polymide, blck, conduit M20x1.5, IP65 E TA21E Aluminium, screw cp, M20x1.5, IP65 6 TA20D Aluminium, high lid, conduit M20x1.5, IP66 5 TA20D Aluminium, high lid, PROFIBUS connector, IP66 8 TA20D Aluminium, high lid, conduit 1/2 NPT, IP66 J TA20J SS 316L, conduit M20x1.5, IP66/IP67 K TA20J SS 316L, with disply, conduit M20x1.5, IP66/IP67 M TA20J SS 316L, PROFIBUS connector, IP66 R TA20R SS 316L, screw cp, conduit M20x1.5, IP66/IP67 S TA20R SS 316L, screw cp, PROFIBUS connector, IP66 W TA20W Aluminium, round lid, clip, conduit M20x1.5, IP66 Y Specil version Extension length E ( mm) 1 80 mm, extension E mm, extension E mm, extension E (DIN43772) mm, extension E (DIN43772) mm, extension E 8... mm, extension E to specify 9... mm, specil extension E Thermowell connection, mteril A M14x1.5 DIN B M18x1.5 DIN C G1/2 B ISO E 1/2 NPT ANSI B2.1 Y Specil version Neck E dimeter nd mteril 1 D =11 mm, SS 316L/ Specil version ML insertion length ( mm) (For ML clcultion see Appendix A) A 110 mm... ML insertion length B 140 mm... ML insertion length C 170 mm... ML insertion length D 200 mm... ML insertion length E 260 mm... ML insertion length F 410 mm... ML insertion length X... mm Length ML to specify Y... mm Specil ML length Insert dimeter 1 O.D. 3 mm 2 O.D. 6 mm Terminl type or built-in trsmitter F Flying leds C Cermic terminl block P TMT181-A insulted, 2-wire PCP trnsmitter configured from...to... C Q TMT181-B isolted, 2-wire PCP ATEX trnsmitter, configured from...to... C R TMT182-A, progrmmble from... to... C, HART, 2-wire, isolted T TMT182-B, progrmmble from... to... C, HART ATEX, 2-wire, isolted S PROFIBUS-PA trnsmitter 2-wire TMT184-A, configured from...to... C V PROFIBUS-PA ATEX trnsmitter 2-wire TMT184-B, configured from...to... C TC type, tolernce, sheth mteril A 1xTC type K cl. 1/spc. Inconel 600 / B 2xTC type K cl. 1/spc. Inconel 600 / E 1xTC type J cl. 1/spc. SS 316L/ F 2xTC type J cl. 1/spc. SS 316L/ Y Specil version EndressHuser 11

12 omnigrd S TC 88 TC reference stndrd. hot junction type 1 EN std., hot junction ungrounded 2 EN std., hot junction grounded 3 ANSI MC 96.1 std., hot junction ungrounded 4 ANSI MC 96.1 std., hot junction grounded 9 Specil version Test report on the inset 0 Test report not required A Std test report on inset B Std test report on loop inset trnsmitter Y Specil version Additionl options 0 Additionl options not required 9 Specil version TC88- Complete order code 12 EndressHuser

13 omnigrd S TC 88 Sles structure THT1 Model nd version of the hed trnsmitter F11 TMT181-A PCP 2-wire, isolted progrmmble from...to... C F21 TMT181-B PCP ATEX 2-wire, isolted progrmmble from...to... C F22 TMT181-C PCP FM IS 2-wire, isolted progrmmble from...to... C F23 TMT181-D PCP CSA 2-wire, isolted progrmmble from...to... C F24 TMT181-E PCP ATEX II3G EEx-nA 2-wire, isolted progrmmble from...to... C F25 TMT181-F PCP ATEX II3D 2-wire, isolted progrmmble from...to... C L11 TMT182-A HART 2-wire, isolted progrmmble from...to... C L21 TMT182-B HART ATEX 2-wire, isolted progrmmble from...to... C L22 TMT182-C HART FM IS 2-wire, isolted progrmmble from...to... C L23 TMT182-D HART CSA 2-wire, isolted progrmmble from...to... C L24 TMT182-E HART ATEX II3G EEx-nA 2-wire, isolted progrmmble from...to... C L25 TMT182-F HART ATEX II3D 2-wire, isolted progrmmble from...to... C K11 TMT184-A PROFIBUS-PA 2-wire, isolted progrmmble from...to... C K21 TMT184-B PROFIBUS-PA ATEX 2-wire, isolted progrmmble from...to... C K22 TMT184-C PROFIBUS-PA FM IS 2-wire, isolted progrmmble from...to... C K23 TMT184-D PROFIBUS-PA CSA 2-wire, isolted progrmmble from...to... C K24 TMT184-E PROFIBUS-PA ATEX II3G EEx-nA 2-wire, isolted progrmmble from...to... C K25 TMT184-F PROFIBUS-PA ATEX II3D 2-wire, isolted progrmmble from...to... C YYY Specil trnsmitter Appliction nd services 1 Assembled into position 9 Specil version THT1- Complete order code EndressHuser 13

14 omnigrd S TC 88 Sles structure Supplementry documenttion Thermocouple thermometers Omnigrd TSC - Generl informtion Industril protecting tubes - Omnigrd TA series Terminl housings - Omnigrd TA 20 Temperture hed trnsmitter itemp PCP TMT 181 Temperture hed trnsmitter itemp HART TMT 182 Temperture hed trnsmitter itemp PA TMT 184 Thermocouple insert - Omniset TPC 100 Thermowell for temperture sensor - Omnigrd M TW 15 EH Thermolb - clibrtion certifictes for industril thermoelements nd working stndrds. RTD s nd thermocouples TI 090T/02/en TI138T/02/en TI 072T/02/en TI 070R/09/en TI 078R/09/en TI 079R/09/en TI 278T/02/en TI 265T/02/en TI 236T/02/en 14 EndressHuser

15 omnigrd S TC 88 EndressHuser 15

16 Subject to modifiction EndressHuser GmbhCo. KG Instruments Interntionl P.O. Box 2222 Colmrer Str. 6 D Weil m Rhein Germny Tel Fx info@ii.endress.com TI 279T/02/en/ FMSGML 6.0