THERMOSTAT ATEX, Type AMTXs-Ex and AMTXs-Ex/BV Single or double thermostat, rigid rod or capillary exit

Transcription

1 THERMOSTAT ATEX, Type AMTXs-Ex and AMTXs-Ex/BV Single or double thermostat, rigid rod or capillary exit Protection by intrinsic safety and by enclosures «i» and «t» For zone 0 (explosive atmospheres due to the presence of gas) For zone 20 (explosive atmospheres due to the presence of dust) Type B Operating manual /

2 Please read these Operating Instructions before commissioning the instrument. Keep the manual in a place that is accessible to all users at all times. Please assist us to improve these operating instructions, where necessary. Your comments will be appreciated. Phone : Fax : info.fr@jumo.net Service hotline : (0,337 /min) All necessary settings and possible adjustments inside the instrument are described in these operating instructions. If any problems should still arise during start-up, you are asked not to carry out any unauthorized manipulations on the unit. You could endanger your rights under the instrument warranty! Please contact the nearest subsidiary or the head office in such a case. 2

3 Contents Page 1 Introduction Use Special conditions for safe use Operating Conditions Description Designation Safety 6 2 Instrument identification Marking ATEX/IECEx Marking Marine 7 3 Mounting Dimensions Construction Capillary/Thermostatic element/thermowell General Thermowell Load limits of the protective sheaths depending on the diameters Opening of thermostat Fixing the thermostat Material of capillary and of bulb (probe) 11 4 Installation Regulation and notes Electrical connection Connection diagrams 13 5 Settings Adjusting the limit Conduct in case of failure 14 6 Specifications Switching function Electrical specifications Electrical connection to intrinsically safe, protection mode Ex «i» Use in explosive atmospheres due to the presence of dust 16 7 Maintenance 17 8 Appendix 18 EC type examination certificate EC declaration of conformity 20 Type approval certificate : BV IECEx Certificate

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5 1 Introduction 1.1 Use Following execution, the thermostat with protection intrinsically safe «i» and protection by enclosure «t» type AMTXs-Ex can be used as : - TW Temperature controller - TB Temperature limiter It regulates and supervises thermal processes. Gas zone, they can only be connected to certified intrinsically safe equipment and which can be used in Zone 0, Zone 1 and Zone 2. Dust zone, protection mode "t" allows the use of material zones 20, 21 and 22. If this thermostat is used on a hazardous area, must be respected a provisions mounting and the functioning of devices in this type of area. The severing or buckling of capillary of thermostat with shaped mounting AMTXs-Exf (only capillary) cause permanent device failure! 1.2 Special conditions for safe use For storage and until mounting, the devices must remain in their original packaging in order to be protected from dust and other external attacks. They must be stored in a dry and clean environment. It s essential to put carefully the device in its original packaging. Storage temperature range : -50 et +50 C. Above or below these limits, the device could be damaged. The surface temperature must not exceed the value indicated on the product. Avoid falls and the locations where the material can undergo mechanical shock. Avoid vibrations, or by fixing the housing on a stable walled, or using a damper assembly (silents blocs ). The minimum radius of curvature of the capillary is of 5 mm. Avoid installation near sources of heat or excessive sunlight, to limit the effects of condensation night. 1.3 Operating conditions Position : indifferent Type : permanent Temperature range of housing : -40 C Temperature of utilisation of the thermostatic element with or without reinforcement : - Copper capillary and et copper bulb : -50 to +200 C - Copper capillary and stainless steel bulb : -50 to +300 C - Stainless steel capillary and stainless steel bulb : -50 to +300 C 5

6 1.5 Description These thermostats function on the principle of fluid expansion. The variation of temperature causes a variation of volume in the measuring system (consisting of a probe, and a capillary membrane) which acts on the switch by a transmission lever mechanical. 1.6 Designation EN (2009) / IEC (2011) EN (2007) / IEC (2011) EN (2009) / IEC (2008) 1.7 Safety In case of breaking of the measuring system, the filling liquid can escape. Currently, there is no restrictive statement from the health services in case of temporary emanation or low concentration, for example due to a breakage of the measuring system. Physical, and toxicological properties of the substances that may escape in case of failure of the measuring system Final scale value Hazardous reactions Risk of fire and explosion Ignition Explosive temperature limit C Vol. % Risk for water Irritant Toxicology Hazardous for health < +200 C C 0,6 8 V X X X C +350 C C - X X X - > 350 C C = no X = yes Toxic 6

7 2 Instrument identification 2.1 ATEX/IECEx marquing JUMO REGULATION METZ (1) Type: AMTXs-Ex (2) N of manufacturing.: (3) Years of manuf..: 2011 CE 0359 II 1GD (4) (5) Ex ia IIC T6 Ga (6) Ex t IIIC T80 C Da IP6X (7) -40 C < Tamb < C LCIE 11 ATEX 3039 X (8) IECEx LCIE X (9) Ui <= 30 Vdc; Ii <= 50mA; Pi <= 0,75 W, Ci = 0, Li = 0. (1) Address of the manufacturer (2) Sensor type (3) Serial number: Order number + position (4) Notified Body: 0359 = Intertek (5) Ex marking group and category (6) Ex marking for Gas zone (7) Ex marking for dust zone (IIIC conductive dust) (8) Number Ex Certification (9) Number IECEx Certificate of Conformity 2.2 Marine marking in option (BV) Type /25-01 Type Approval Certificate N : 32252/A0 BV AMTXs-Ex C 7

8 3 Mounting 3.1 Dimensions Thermowell version 8

9 Capillary exit version 9

10 3.2 Construction Epoxy coated aluminum case IP65 mini, or case stainless steel IP65 mini or case certificated ATEX «i», «t», complies with the standards EN (2009), EN (2007) and/or EN (2009). 3.3 Capillary/Thermostatic element/thermowell General Severing or buckling of capillary of thermostat for saillie mounting cause permanent device failure! The minimum allowable radius of curvature is 5 mm. The installation of the thermostatic element in JUMO thermowell is imperative otherwise the homologation of the thermostat mounting is no longer valid. The bulb must be completely immersed in the environment sample to avoid excessive variations of the contact point Thermowell For sheath, mounting, JUMO recommande a bolting torque : 80 Nm G 3/8 connection 140 Nm G ½ connection 180 Nm G ¾ connection Protective reinforcement steel, stainless steel, brass or nickel alloy. D 7 to 30 mm L 5 to 200 mm. Mounting Connection, Clamp, other next process If the thermowell is used as a passage of zone 1, the wall thickness must be greater than 1 mm. 10

11 3.3.3 Load limits of the protective sheaths depending on the diameters 3.4 Opening of thermostat - Unscrew the 4 cover screws - Remove cover with seal (not visible) Note: care must be taken to place correctly the seal during reassembly! 3.5 Fixing the thermostat - Using the template, drill the mounting holes - Attach the lower housing part with 4 screws 3.6 Material of capillary and of bulb (probe) End value of scale Up to 200 C Capillary Temperature probe Notes Copper (Cu) Ø 1,5 mm Num. Material Cu-DHP Copper (Cu) Num. Material Cu-DHP brazed Probe and capillary also achievable in AISI 316TI 11

12 4 Installation 4.1 Regulation and notes Please to respect, when making electrical connections in an explosive atmosphere, the requirements are : - The electrical connection must only be carried out by qualified personnel. - The choice of cable, for installation or electrical connection of the device, must respected regulation in force. - Connect the device to the ground terminal on the ground, with the protective conductor. The driver must have the same section as the supply line. Put the lines of grounded star, to a point of common connected to the supply voltage by the protective conductor. Do not loop the ground, that is to say not to them from one instrument to another. - Incorrect settings on the thermostat can affect the proper operation of the process or cause damage. That is why the adjustment should only be performed by qualified personnel. So please observe the relevant safety rules. - Accessories mounted on the walls of the shells such as cable glands, plugs fitted by you must be of a type certified or compatible with material certification. - A installation must verify that the hardware is suitable for operating conditions: degree of sealing envelopes. - In the case of particularly corrosive atmosphere, provide additional protection. Any operation is not performed in accordance with manufacturers instructions, it emerges from any responsibility. 4.2 Electrical connection - Prepare the cables using the appropriate tools. - Pass the connecting cable through the cable gland. - Make the connection according to the diagram engraved in the cover. - The cable must be installed in a fixed manner (cable gland tight on cable). 12

13 4.3 Connection diagrams 13

14 5 Settings 5.1 Adjusting the limit - Open the case. - Set the limit value with the setpoint button (5). 5.2 Comportement in case of failure Temperature controller: in case of failure of the measuring system (leakage), the electrical circuit is open. 6 Specifications 6.1 Switching function Temperature controller TW If the temperature at the probe exceeds the setpoint, the transmission mechanism actuates the microswitch which causes the opening or closing of the electrical circuit. When the temperature is again lower than the set point (less switching differential), the microswitch returns to its resting position. Temperature limiter TB When the temperature exceeds the setpoint, the electrical circuit is open and the microswitch is mechanically locked. When the temperature is lower than the set temperature less approximately 10% of calibrated span, it is possible to unlock manually after removal of the cover. 14

15 Setting ranges and characteristic of the probe Setting ranges/ thresholds C -20 à à à à à à à +200 Setting ranges/ thresholds C Switching differential % 1 2, , , , , , ,5 Switching differential % Max. probe temperature C Max. temperature of the probe C Max temperature of the case C Max temperature of the case C Probe length «L» in mm, Ø of the probe «d» in mm Material Cu Minimum length of the plunger (connection out) Ø 6 1) Ø 8 Probe Ø 6 Probe Ø Probe length «L» in mm, Ø of the probe «d» in mm Stainless material Minimum length of the plunger (connection out) -40 à +100 C Operating data Switching point accuracy in % of control range/limit value range Mid ambient temperature influence Admissible storage temperature Admissible ambient temperature for use Nominale position (NL) Switching differential 1 %, 2,5 % 5 % 7 % In the upper third of th escale or limit value ± 1,5 % ± 3 % ± 4 % Deviation of the ambient.temperature at the switching head and/or capillary from the 22 C calibration ambient temperature produces a switching point offset. Higher ambient temperatures = lower switching point Lower ambient temperature = higher switching point Switching difference in % 1/2,5 5 7 Ambient temperature influence on the switching head in %/K 0,15 0,26 0,34 Ambient temperature influence on the capillary in %/m 0,05<K<m 0,09<K<m -50 to +50 C -40 to C Any 6.2 Electrical specifications Ui < 30 V, li < 50 ma, Pi < 0,75 W, Ci = 0, Li = 0 Contacts or 15

16 6.3 Electrical connection to intrinsically safe, protection mode Ex «i» The equipment used in hazardous areas contains only intrinsically safe circuits. In a normal situation and in case of failure due to a short circuit, no flammable spark occurs or when devices do not heat at the surface beyond the class defined temperature (see also EN ). For an electric circuit can be defined as intrinsically safe must all devices that are in the circuit are designed with intrinsically safe and certified. Then check that the interconnection of intrinsically safe devices also meets the requirements of an electrical circuit intrinsically safe. Interconnection itself does not guarantee a intrinsically safe circuit. It must make a calculation of the intrinsic safety loop. To prove of intrinsic safety, electrical limits must conform to certificates for equipment. Conditions are verified by comparing the permissible limits of electrical equipment : Electrical equipment «i» Tension (U) Ui Cuurrent (I) li Power (W) Pi Inductance (mh) Li (+Lc câble) Capacity (µf) Ci (+Lc câble) Associated equipement Uo Io So Lo Co 6.4 Use in explosive atmospheres due to the presence of dust Consider the following values for use in explosive atmosphere due to the presence of dust: For all area : The surface temperature of the electronic equipment must not increase shall not increase so that the dust as cloud or layer, can be ignited. This is possible when the following conditions are respected : Dust as cloud For the prevention of inflammation of dust atmospheres, must limit the maximum temperature of the surface. It must be less than the lower of the two values whether 2/3 on the temperature auto-inflammation of dust cloud considered. Dust layer Surface on which it is not possible to avoid dangerous incandescent dust deposition, the surface temperature must not exceed the incandescent temperature under 75K. In case of upper layer to 5 mm, a reduction greater of the temperature is necessary. If the dust is present in both the cloud and the layer, as is often the case, the most unfavourable case. Remark : for the term we use area, the casing containing electrical equipment. 16

17 7 Maintenance Our thermostats require no operation of maintenance or repair In case of dysfunction, the device must be dismantled and send to our factory in order to be repaired or replaced. The degree of protection of the envelope must be permanently filled for this purpose, the packing seals must be maintained in good condition. Before working on equipment, must scrupulously follow the instructions on safety. Equipment for explosive atmospheres ATEX must be implemented only by qualified personnel in the field. 17

18 8 Appendix 18

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28 JUMO GmbH & Co. KG Adresse : Moritz-Juchheim-Straße Fulda, Allemagne Adresse de livraison : Mackenrodtstraße Fulda, Allemagne Adresse postale : Fulda, Allemagne Téléphone : Télécopieur : mail@jumo.net Internet : JUMO Régulation SAS Actipôle Borny 7 rue des Drapiers B.P Metz Cedex 3, France Téléphone : Télécopieur : info.fr@jumo.net Internet : 28