Capillary Thermometers according to DIN Nitrogen Filled Option: Contacts

Transcription

1 Capillary Thermometers accoring to DIN Nitrogen Fille Option: Contacts measuring monitoring analysing Environmentally-frienly measuring system with non-toxic nitrogen Fast response time Measuring ranges: C Probe material: stainless steel 01 / 0205 / Ko / 10 KOBOD offices exist in the following countries: ARGENTINA, AUSTRIA, BEGIUM, BRAZI, CANADA, CHINA, FRANCE, GERMANY, GREAT BRITAIN, ITAY, MEXICO, NETHER- ANDS, PERU, POAND, SWITZERAND, USA, VENEZUEA KOBOD Messring GmbH Norring D Hofheim/Ts. +49(0) Fax +49(0) info.e@kobol.com Internet: Moel: TNF 19

2 Capillary Thermometers accoring to DIN Description The measuring system of the gas pressure thermometer comprises probe, capillary tube an Bouron tube in a casing. These parts form a unit. The complete measuring system is fille with pressurize nitrogen. A change in temperature causes a change in inner pressure in the immersion shaft. The resulting eflection of the Bouron tube is transferre to the pointer through a pointer element. Display an probe are connecte by a capillary tube separate by a istance up to 100 m. A version fille with glycerine is available as an option for service at measuring points expose to strong vibrations. The fill ampens the measuring system when expose to mechanical vibrations an thus enables steay inication; it also provies goo lubrication for moving parts. We recommen our robust aluminium casing for rough fiel service conitions. These thermometers can also be use with aggressive measuring substances when fitte with a suitable thermowell. Areas of application Chemical inustry, petrochemicals Foo inustry Mechanical engineering an heavy goos inustry Piping an vessel construction Process engineering Technical Details Casing: black steel with bayonet lock aluminium (100 or 160 mm) with steel ring cover, stainless steel or brass chromium plate profile casing: black steel Winow: instrument glass 4 mm with aluminium case: plexiglass option: safety glass Protection: IP 65 IP 54 with black steel Dial: aluminium, white with black inscription Pointer: aluminium, black Pointer element: brass, option for 100 or 160 mm casing: stainless steel Measuring range: to C Overloa protection: full scale value, option 1.3 x full scale Accuracy class: Ø 63 an Ø 80 category 1.6 Ø 100, Ø 160 an Ø 250 category 1 Nominal sizes: Ø 63, 80, 100, 160 an 250 mm Probe: stainless steel with 100 or 160 mm casing stainless steel Probe iameter: stanar: 12 mm option: 9 or 10 mm Probe length: to customer specification Screwing: stainless steel Capillary tube: stainless steel steel with PVC jacket stainless steel with flexible reinforce protective hose mae of re copper (not for 100 an 160 mm Ø) Orer Key TNF- 1D 1 24 E A1 M12 Y Moel Case material Inicating range Capillary material Probe/material/connection Type of contact/function Special version Please specify bulb an length of capillary tube (mm) in writing. 20

3 Capillary Thermometers accoring to DIN Design/ case iameter 2. Case material Design Case iameter TNF-0D TNF-0E TNF-0F TNF-0G TNF-0I..2.. = stainless steel TNF-1D TNF-2D TNF-1E TNF-2E TNF-1F TNF-2F TNF-1G TNF-2G TNF-1I TNF-2I..3.. = aluminium ring cover steel, black (for 100/160 mm casing only) TNF-5D TNF-5E TNF-5F TNF-5G* TNF-5I..A.. = aluminium ring cover stainless steel (for 100/160 mm casing only) TNF-8D TNF-8E TNF-8F TNF-8G TNF-8I TNF-6D TNF-6E TNF-6F** TNF-6G** - Profile casing 96 x 96 mm 72 x 144 mm TNF-Q91.. steel, black finish TNF-R71.. steel, black finish *with 160 mm high-grae steel case eccentric probe exit ** 100 an 160 mm casing in aluminium only 3. Scale ranges C C C..24..= = = = = = = = = = = = Special measuring ranges: upon request min. T=60 C..30..= = = = /0205Ko /10 4. Capillary tube..r..= re copper (for case iameters an 250 mm)..e..= stainless steel (stanar) ( with 63, 80, 250 mm case iameters)..p.. = steel with PVC sheathing..f.. = stainless steel with flexible stainless steel reinforce hose (1.4301) Please specify length of capillary tube (mm) when orering. 21

4 Capillary Thermometers accoring to DIN Stanar probe/ material/ connection (probe iameter: 12 mm) Description Material Threa Orer coe 20 Smooth probewithout..a Union nut..b1....b2....b Rotatable nipple for DIN sleeve SW2 Union nut an shouler nipple 1/2 NPT 3/4 NPT 1 NPT A....1B....1C.. c SW2 6 mm Sliing screwing on extension tube 1/2 NPT 3/4 NPT 1 NPT A....9B....9C.. c SW2 Sliing screwing on capillary tube 1/2 NPT 3/4 NPT 1 NPT A....8B....8C Ø 16 Helix probe for gases Smooth probe..h0.. Bulb length Please specify when orering. Minimum length 50 mm from sealing collar of threa. 6. Special version (please specify in writing when orering) Probe iameter 9 or 10 mm Test certificate (5 measuring points) Overtemperature protection (1.3 x) Safety glass Dual scale ( C/ F) Measuring mechanism mae of stainless steel (with 100 an 160 mm casing only) Max. pointer Re gliing mark pointer Casing fille with glycerine or oil Knife ege pointer with fine grauation Plug accoring to DIN with junction box (with unfille casings only) Tuchel-plug 22

5 Contacts for Capillary Thermometers accoring to DIN Contacts Contacts (for casing with 100 or 160 mm iameter only) Description Electromechanical an electronic limit monitors serve to open an close electrical switching circuits epening on the position of the instrument isplay. They are suitable for fitting in casings with 100, 160 mm Ø. The limit values are ajuste from outsie with a setting lock. The limit monitor is set with a etachable key to the value at which the switching operation is to be carrie out. The construction of the limit monitor is such that the instrument can continue operating past the setting pointer after successful contact transfer. The maximum setting range is approximately 270 angular egrees. Ambient temperatures of -20 C to +70 C have no effect on the reliability performance. We strongly recommen the use of our contact protection relays in applications with high breaking capacities or vibrations, or for service in amping liquis (oil). These relays have been specially esigne for electromechanical limit monitors an their use is manatory. The following contacts are available: Slow-action contacts Magnetic spring contacts Inuctive contacts Magnetic spring contacts Magnetic spring contacts are suitable for service uner almost all operating conitions. They are almost completely insensitive to vibrations. The contact pin carrier of the setting pointer is fitte with an ajustable magnet which pulls in the wiper shortly before the set value is reache. Arcing is thus avoie an the pin is prevente from being scorche. Because the magnetic force becomes effective uring the switching operation with this construction, the setting pointer must be avance or retare by the forming ifferential gap of approximately 3-6% of full scale value. Switching voltage: max. 250 V AC/DC Breaking capacity: max. 30 W/50 VA Switching current: max. 0.6 A with stanar contact material silver-nickel (Ag 80 Ni20) Others on request Slow-action contacts These contacting evices switch free of elay in the same way as the motion of the actual-value pointer. They shoul be use where no contact loaing is require an the instruments are not expose to vibrations. Due to sparking the contacting evices shoul not be use where there is a anger of explosion. Care shoul also be taken that the contacting evices are not expose to the effects of aggressive vapours. Switching voltage: max. 250 V AC/DC Breaking capacity: max. 10 watt/18 VA Switching current: max. 0.6 A with stanar contact material silver-nickel (Ag 80 Ni20) Inuctive contacts accoring to DIN (Namur) The inuctive contact evice comprises mainly the control hea (initiator) attache to the setpoint pointer with its completely assemble encapsulate electronics an mechanical assembly with moving control vane. The control vane is move by the instrument pointer (setpoint pointer). The control hea is supplie with DC voltage. When the control vane is immerse in the air gap of the control hea, its inner resistance increases (ampe conition, the initiator is high-resistive). The resulting change in current intensity is the input signal for the switching amplifier in the control unit. Inuctive contacts are suitable for service where explosion protection an high reliability an switching rate, that is, long service life, are require. Avantages of the inuctive contact evice: ong service life with non-contact switching Negligible reaction on the isplay Insensitive to aggressive environments (encapsulate electronics) Explosion protection, with control unit for service in zone 1 an 2 areas Nominal voltage: 8 V DC (Ri = 1 kω) Ex-protection Thermometers with inuctive contacts an external control unit can be use in hazarous areas (zone 1 an 2). The necessary control unit shoul be installe outsie the ex-area. Please refer to our brochure Z2 for etails on control units. 23

6 Contacts for Capillary Thermometers accoring to DIN Switching function of contacts Magnetic spring contacts/ slow-action contacts imit monitor with one contact Switching operation Switching function (when the limit value is exceee) Orer coe Magnetic spring contact Orer coe Slow-action contact Contact closes..m10..s Contact opens..m20..s Contact switches over, that is, contact opens contact closes imit monitor with two contacts..m30..s30 First an secon contact closes..m11..s11 1. Contact closes 2. Contact opens..m12..s12 1. Contact opens 2. Contact closes..m21..s21 First an secon contact opens..m22..s22 Inuctive contacts imit monitor with one contact Switching operation When the thermometer pointer moves clockwise an when the set limit value is exceee it causes the following action: Control action Orer coe inuctive contact moves the control vane out of the control hea Control circuit is close..i moves the control vane into the control hea imit monitor with two contacts Control circuit is opene..i20 moves the control vane of the first an secon contact out of the control hea moves the control vane of the first contact out of the control hea moves the control vane of the secon contact into the control hea moves the control vane of the first contact into the control hea moves the control vane of the secon contact out of the control hea Control circuits are close First control circuit closes Secon control circuit opens First control circuit opens Secon control circuit closes..i11..i12..i21 moves the control vane of the first an secon contact into the control hea Control circuits are opene Up to three contacts (up to four contacts in the aluminium case) can be elivere upon request. The evices are elivere with lateral connecting box as stanar. Other connectors upon request. 24