.book Page 1 Friday, November 19, 2010 2:23 PM OPTITEMP TRA/TCA Supplementary instructions Industrial thermometers with replaceable measuring inserts.
.book Page 2 Friday, November 19, 2010 2:23 PM CONTENTS OPTITEMP TRA/TCA 1 Safety instructions 3 1.1 General notes ................................................................................................................... 3 1.2 EC conformity ................................................................................................................... 3 1.3 Safety instructions............................................................................................................
Safety instructions .book Page 3 Friday, November 19, 2010 2:23 PM SAFETY INSTRUCTIONS 1 OPTITEMP TRA/TCA 1.1 General notes These additional "Ex" instructions apply to explosion-protected models of industrial thermometers with the marking II 1/2 G, II 1 G and II 1 D. They complement the standard documentation for non-explosion-protected models. The information given in these Instructions contains only the data relevant to Category 1 explosion protection.
Device description .book Page 4 Friday, November 19, 2010 2:23 PM 2 DEVICE DESCRIPTION OPTITEMP TRA/TCA 2.1 Device description Industrial thermometers measure the temperature of flammable and non-flammable gases and liquids. They consist of a thermometer assembly comprising a connection head and usually a thermowell (only version TRA/TCA-P14 does not have a thermowell). The thermometer assembly contains a measuring insert, which can have either a thermocouple or a Pt100 measuring resistor as sensor.
.book Page 5 Friday, November 19, 2010 2:23 PM DEVICE DESCRIPTION 2 OPTITEMP TRA/TCA 2.2 Description code The safety description code of the measuring inserts is made up of the model name and the VGC key.
.book Page 6 Friday, November 19, 2010 2:23 PM 2 DEVICE DESCRIPTION OPTITEMP TRA/TCA VGC key Designation 1 Type of thermowell tip 2 Abbreviation for full description of thermometer Variants VGC 1 = straight tip VGC 4 = tapered tip For VGC1: 1 = TRA-P10 (insert version); 2 = TRA-S11 (threaded version); 3 = TRA-S12 (threaded version); 4 = TRA-F13 (flange version); A = TCA-P10 (insert version); B = TCA-S11 (threaded version); C = TCA-S12 (threaded version); D = TCA-F13 (flange version); L = TRAP14 (wit
.book Page 7 Friday, November 19, 2010 2:23 PM DEVICE DESCRIPTION 2 OPTITEMP TRA/TCA 2.3 Marking 1 2 3 4 5 6 7 8 9 Type designation Sensor designation Number of the EC Type Test Certificate Ex-marking for gas and dust Electrical sensor values (this information is different if a transmitter is used as the transmitter values then apply) Equipment group and category for gas and dust Identification number of the notified body as per Directive 94/95, Appendix IV VGC key Unique serial number 2.
.book Page 8 Friday, November 19, 2010 2:23 PM 2 DEVICE DESCRIPTION OPTITEMP TRA/TCA 2.5 Equipment category Industrial thermometers are designed for use in zone 0 in category II 1 G, for use in zone 20 in category II 1 D. In category II 1/2 G all thermometers have a separator (thermowell) which separates zone 0 and zone 1.
.book Page 9 Friday, November 19, 2010 2:23 PM DEVICE DESCRIPTION 2 OPTITEMP TRA/TCA 2.6 Protection types 2.6.1 Protection type with zone separator for gas hazard areas In protection type "intrinsic safety" the industrial thermometer meets the requirements of EN 60079-11. The explosion protection is guaranteed because the current and voltage are limited so that ignitable energy cannot occur. If zone 0 and zone 1 are separated as per EN 60079-26, this will ensure that a thermowell is fitted properly.
.book Page 10 Friday, November 19, 2010 2:23 PM 2 DEVICE DESCRIPTION OPTITEMP TRA/TCA 2.6.3 Type of protection for dust hazard areas In protection type "Protection through instrinsic safety" the industrial thermometer meets the requirements of EN 61241-11. The dust protection is guaranteed by housing which provides appropriate protection against penetration by dust. Current and voltage are also limited so that ignitable energy cannot occur.
.book Page 11 Friday, November 19, 2010 2:23 PM DEVICE DESCRIPTION 2 OPTITEMP TRA/TCA 2.7 Temperature classes The permitted ambient temperature range of the industrial thermometer without temperature transmitter on the measuring insert ("head-mounted transmitter") is: Tamb = -40...+100°C / -40...+212°F DANGER! If you are using an industrial thermometer with head-mounted transmitter, refer to the Exdocumentation of the temperature transmitter for the permitted maximum values for the ambient temperature.
.book Page 12 Friday, November 19, 2010 2:23 PM 2 DEVICE DESCRIPTION OPTITEMP TRA/TCA 2.7.
.book Page 13 Friday, November 19, 2010 2:23 PM DEVICE DESCRIPTION 2 OPTITEMP TRA/TCA 2.7.2 Temperature at process connection (without temperature transmitter) DANGER! The maximum permitted temperature at the process connection for all industrial thermometers is 400°C / 752ºF.
.book Page 14 Friday, November 19, 2010 2:23 PM 2 DEVICE DESCRIPTION OPTITEMP TRA/TCA Temperature at process connection without temperature transmitter 1 Maximum permitted temperature at the process connection ( Tp) 2 Ambient temperature at the measuring point (Ta) 3 TxA-P14, insert thermometer without thermowell; TxA-P10, insert thermometer with thermowell; TxA-S12/41, threaded thermometer; TxA-F13/42, flange thermometer; neck pipe length in each case ≥ 80 mm 4 TxA-P14, insert thermometer without therm
.book Page 15 Friday, November 19, 2010 2:23 PM DEVICE DESCRIPTION 2 OPTITEMP TRA/TCA 2.7.3 Temperature at process connection (with temperature transmitter) DANGER! The maximum permitted temperature at the process connection for all industrial thermometers is TP = 400°C / 752ºF. The maximum permitted ambient temperature is Ta = 85°C / 185°F.
.book Page 16 Friday, November 19, 2010 2:23 PM 2 DEVICE DESCRIPTION OPTITEMP TRA/TCA Temperature at process connection with temperature transmitter 1 Maximum permitted temperature at the process connection ( Tp) 2 Ambient temperature at the measuring point (Ta) 3 TxA-P14, insert thermometer without thermowell; TxA-P10, insert thermometer with thermowell; TxA-S12/41, threaded thermometer; TxA-F13/42, flange thermometer; neck pipe length in each case ≥ 80 mm 4 TxA-P14, insert thermometer without thermowe
.book Page 17 Friday, November 19, 2010 2:23 PM DEVICE DESCRIPTION 2 OPTITEMP TRA/TCA 2.7.4 Temperature at process connection (with temperature transmitter, classes T5 and T6) As special restrictions apply to temperature classes T5 and T6, you must heed the information about the maximum ambient temperature in the temperature transmitter documentation.
.book Page 18 Friday, November 19, 2010 2:23 PM 2 DEVICE DESCRIPTION OPTITEMP TRA/TCA 2.7.5 Temperature at process connection for thermometers with connecting cable DANGER! The maximum permitted temperature at the process connection for all industrial thermometers is TP = 400°C / 752ºF. The maximum permitted ambient temperature is Ta = 70°C / 158°F. Always refer to the table below! DANGER! Always refer to the tables below.
.book Page 19 Friday, November 19, 2010 2:23 PM DEVICE DESCRIPTION 2 OPTITEMP TRA/TCA Temperature at process connection for thermometers with connecting cable 1 Maximum permitted temperature at process connection ( Tp) 2 Ambient temperature at measuring point (Ta) 3 TxA-P14, insert thermometer without thermowell; TxA-P10, insert thermometer with thermowell; TxA-S12/41, threaded thermometer; TxA-F13/42, flange thermometer; neck pipe length in each case ≥ 80 mm / 3.
.book Page 20 Friday, November 19, 2010 2:23 PM 2 DEVICE DESCRIPTION OPTITEMP TRA/TCA 2.8 Electrical data DANGER! Connect the sensor circuit of an industrial thermometer only to intrinsically safe circuits as well as separate transmitters certified as intrinsically safe or zener barriers. Observe the following maximum values when connecting a measuring insert without temperature transmitter: • Ui = 30 V • Ii = 140 mA • Pi = 1.
Installation .book Page 21 Friday, November 19, 2010 2:23 PM INSTALLATION 3 OPTITEMP TRA/TCA 3.1 Selecting the right thermometer and calculating limit values DANGER! In order to prevent injury and material damage, always ensure that the process conditions do not exceed the permitted limit values of the thermometer.
.book Page 22 Friday, November 19, 2010 2:23 PM 3 INSTALLATION OPTITEMP TRA/TCA Once you have calculated the specified parameters and device properties, you must determine the maximum permitted temperatures for your specific measuring point in three steps. Use the tables in the previous subchapters to do this: • Determine the maximum permitted product temperature ( refer to Maximum permitted product temperature on page 12).
.book Page 23 Friday, November 19, 2010 2:23 PM INSTALLATION 3 OPTITEMP TRA/TCA Step 2: Calculate the maximum permitted temperature at the process connection • You must always calculate the highest permitted temperature at the process connection for temperature classes T5 and T6 ( refer to Temperature at process connection (with temperature transmitter, classes T5 and T6) on page 17); therefore go directly to the specified subchapter and omit the following steps.
.book Page 24 Friday, November 19, 2010 2:23 PM 3 INSTALLATION OPTITEMP TRA/TCA If the process conditions at your measuring point are outside of the values in the tables used in the example above, you will have to use charts. These can be found in the subchapters below following the tables. The charts also include less common temperatures.
.book Page 25 Friday, November 19, 2010 2:23 PM INSTALLATION 3 OPTITEMP TRA/TCA 3.2 Assembly DANGER! The manufacturer is not liable for any damage or injuries resulting from improper use or use other than the intended purpose. This applies in particular to hazards due to insufficient corrosion resistance and suitability of the materials in contact with products. DANGER! Installation and setup must be carried out according to the applicable installation standards (e.g.
Electrical connections .book Page 26 Friday, November 19, 2010 2:23 PM 4 ELECTRICAL CONNECTIONS OPTITEMP TRA/TCA 4.1 General notes DANGER! In order to prevent injury and material damage, always take heed of the information about temperatures at the process connection before connecting an industrial thermometer to an electricity supply ( on page 18). In addition, always observe the following points: • Ensure that all connecting cables conform to the valid installation standards (e.g.
.book Page 27 Friday, November 19, 2010 2:23 PM OPTITEMP TRA/TCA ELECTRICAL CONNECTIONS 4 4.3 Inputs / Outputs The electrical connection of an industrial thermometer depends on the type of measuring insert used. The manufacturer offers measuring inserts with two different sensor types, either with Pt100 resistor (TR 100) or with thermocouple (TC 100). 4.3.
.book Page 28 Friday, November 19, 2010 2:23 PM 4 ELECTRICAL CONNECTIONS OPTITEMP TRA/TCA 4.4 Grounding and equipotential bonding DANGER! In order to prevent injury and material damage, always observe the following points regarding grounding and equipotential bonding: • Always include the thermometer and its measuring insert as per EN 60079-14 in the equipotential bonding of the installation site (when installed correctly, the fixing screws guarantee this).
Operation .book Page 29 Friday, November 19, 2010 2:23 PM OPERATION 5 OPTITEMP TRA/TCA 5.1 Starting up for the first time DANGER! To prevent injury and material damage, only operate industrial thermometers under the following conditions: • The equipment was installed and connected in accordance with the manufacturer's instructions. • At the operator's request, a test was conducted prior to start-up to ensure the correct installation and connection.
Service .book Page 30 Friday, November 19, 2010 2:23 PM 6 SERVICE OPTITEMP TRA/TCA 6.1 Maintenance DANGER! Maintenance measures of a safety-relevant nature within the meaning of explosion protection may only be carried out by the manufacturer, his authorised representative or under the supervision of authorised inspectors. For systems in explosive areas, regular tests are required in order to maintain the proper condition.
.book Page 31 Friday, November 19, 2010 2:23 PM SERVICE 6 OPTITEMP TRA/TCA As well as replacing individual components, it is also possible to replace the entire thermometer, however you as operator have sole responsibility for this: DANGER! In order to prevent injury or material damage when replacing components of the industrial thermometer, always observe the following points: • Before dismantling the electrical connecting lines of the device, ensure that all the cables leading to the measuring insert
.book Page 32 Friday, November 19, 2010 2:23 PM © KROHNE 10/2010 - 4001087001 - Ex AD OPTITEMP TRA/TCA R02 en - Subject to change without notice.
