Endress+Hauser S TC63 Specifications

Technical Information

71105559

Omnigrad S -TC63

Thermocouple thermometer EEx-d certified, replaceable insert, pipe thermowell, process connection threaded, flanged or sliding. PCP (4...20 mA), HART® or PROFIBUS-PA® electronics

Range of uses

The Omnigrad S TC63 is an industrial thermometer (thermocouple TC: K or J) a neck and a thermowell from pipe. It is developed for the use in the chemical, petrochemical and energy industries, but suitable also for other generic applications. In compliance to EN 50014/18/20 (ATEX certification) it is therefore particularly suitable also for hazardous areas. When required, it’s also available with a transmitter (PCP, HART® or PROFIBUS-PA®) into the housing. The process connection of the thermowell is threaded or flanged in compliance to the standard of process requirements.

Application areas

• Chemicals industry

• Energy industry

• Gas Processing industry

• Petrochemical industry

• General industrial services

TI287T/02/en

Features and benefits

• Several types of process connection

• Several type of materials available for the thermowells

• Customized immersion length

• Aluminium housing, with protection grade from IP66 to IP68

• Thermocouple with hot junction grounded or ungrounded in mineral oxide cable (MgO cable) diameter: 3 or 6 mm

• PCP, HART® and PROFIBUS-PA®, (4...20 mA 2-wire transmitters)

• The accuracy of the thermocouple TC (K (NiCr-Ni) and J (Fe-CuNi)) are: Cl. 1 - 2 (EN 60584) or Cl. Special - Standard (ANSI MC96.1)

• The thermocouple TC (K or J) are available in single or double element

• ATEX II 2 GD EEx-d IIC certification

• ATEX II 1/2 GD EEx d IIC certification

4 0

Omnigrad S -TC63

Function and system design

Measuring principle The thermocouple (TC) thermometer’s sensing element consists of two metal wires that are homogeneous but

different one from the other and insulated along their entire length. The two wires are welded together at one end, known as the “measurement or hot junction”. The other end, where the wires are free, is known as the “cold or reference junction” and is connected to a electromotive force measurement circuit where the force is generated by the different thermoelectric power of each of the thermocouple’s wires if there is a temperature difference between the hot joint (T1) and the cold joint (Seebeck effect). The cold junction has to be “compensated” with reference to the temperature of 0°C (T0). The function that links the electromotive force to the temperatures T1 and T0 is a curve whose characteristics depend on the materials used in the construction of the thermocouple. Some thermocouples curves, and particularly those most reliable for the purposes of industrial readings, are those compliant with standards DIN EN 60584 and ANSI MC96.1.

Equipment architecture The construction of the TC63 temperature sensor is based on the following standards:

• EN 50014/18 (housing)

• Neck (with nipple and "3 union")

• EN 60584 (insert)..

• Pipe thermowells standard like: ENI, MONTEDISON, ENEL, ecc. The housing is in painted aluminium alloy; it is suitable to contain a transmitter and/or the ceramic block of the insert; the “Ingress Protection” is from IP66 to IP68. The neck composed by one or two nipple and one "3 union", standard or EEx- execution, it is the exstension between the head and the thermowell. The hot junction of the thermocouple (type K or J) are positioned close to the tip of the probe. The thermocouple is available in two versions: grounded or ungrounded hot junction. The electrical structure of the thermocouple always complies with EN 60584/61515 or ANSI MC96.1/ASTM E585 standard rules. The thermowell is from pipe, with wetted part, straight or tapered. The process connection on the thermowell is: threaded or flanged, in some case it can be to sliding also.

Fig. 1: TC63 with the various types of process connections and end parts of the probe

Material & Weight

Operating conditions

Housing Insert Neck Thermowell Weight

aluminium epoxy coated

sheath in SS 316L/1.4404 Inconel® 600/2.4816.

nipple and 3 union: SS 316/1.4401, A105

thermowells: SS 316/1.4401, SS 446/1.4749 Inconel® 600/2.4816.

From 1.5 to 5.0 kg for standard options

Performance

Operating condition or test Product type or rules Value or data of test

Ambient temperature housing (without head-mounted transmitter -40÷130°C

housing (with head-mounted transmitter) -40÷85°C

Process temperature It is restricted by the thermowell

material:

Shock and vibration resistance test

TC Inset in according to the rule IEC 60751:

< 600°C SS 316L/1.4404 < 800°C SS 316Ti/1.4571 < 1100°C Hast.® C276/2.4819 -

Inc.600®/2.4816

Acceleration 3 g of peak Frequency from 10Hz to 500Hz and back Time test 10 hours

2 Endress+ Hauser

Omnigrad S -TC63

Accuracy

Thermocouple

and range °C

J (Fe-CuNi)

0 ...750°C

K (NiCr-Ni)

0...1250°C

Thermocouple

and range °C

J (Fe-CuNi)

-40° ... 750°C K (NiCr-Ni)

-40 ... 1200°C

Others errors

Transmitter maximum error See the corresponding documentation (codes at the end of the document)

Display maximum error 0.1% FSR + 1 digit (FSR = Full Scale Range)

Class Max deviation Class Max deviation Cable colors

Stand-

ard

Stand-

ard

Class Max deviation Class Max deviation Cable colors

2 +/-2.5°C (-40...333°C)

+/-2.2°C (0...293°C)

+/-0.75%o(293...750°C)

+/-2.2°C (0...293°C)

+/-0.75%o(293...1250°C)

ItI = absolute temperature value in °C

+/-0.0075 |t| (333...750°C)

+/-0.0075 |t| (333...1200°C)

ItI = absolute temperature value in °C

ANSI MC96.1

Special +/-1.1°C (0...275°C)

+/-0.4%o(275...750°C)

Special +/-1.1°C (0...275°C)

+/-0.4%o(275...1250°C)

EN 60584

1 +/-1.5°C (-40...375°C)

+/-0.004 |t| (375...750°C)

1 +/-1.5°C (-40...375°C)

+/-0.004 |t| (375...1000°C)

Response time Tests, with the TC insert, in water at 0.4 m/s (according to IEC 60751) from 23 to 33°C:

Stem diameter of the insert Sensing element type Temperature of test Response time

Insulation

SS 316 - d. 6 mm K (NiCr-Ni), J (Fe-CuNi) t

Measurement Insulation type Result

Insulation resistance between terminals and probe sheath according to EN 60584, test voltage 500 V

> 1GΩ at 25°C > 5 MΩ at 500°C

2,5 s 7,0 s

+ black

- red

+ yellow

- red

+ black

- white

+ green

- white

Self heating Negligible when the E+H iTEMP® transmitters are employed.

Installation

The TC63 can be installed on pipes or tanks by means of threaded or flanged connections. The counterparts for process connections and gaskets, when required, are not supplied with the sensor and must be purchased separately by the user. The immersion length must take into account all the parameters of the thermometer and the process to measure. If the immersion is too low, an error may be generated in the temperature recorded due to the lower temperature of the process fluid near to the walls and heat transfer, which takes place through the sensor stem. The incidence of such an error can be not negligible if there is a big difference between the process temperature and the ambient temperature. To prevent measuring errors of this kind, it is advisable to use thermowells with a small diameter and an immersion length (L) of at least 100÷150 mm. In small section ducts the tubing’s axis must be reached and preferibly slightly exceeded by the tip of the probe (see fig. 2A2C). Insulation of the outer part of the sensor reduces the effect produced by a low immersion. Alternatively, it is also possible to adopt a tilted installation (see fig. 2B-2D). For a best installation, in the industries, it's better to follow the rule: h ( d, L > D/2 + h. As far as corrosion is concerned, the base material for parts in contact with the fluid is able to withstand the most common corrosive agents up to the highest temperatures. Even the nipples and 3 elements coupling supplied with the connection fitting of the instrument are able to withstand a wide range of aggressive substances. With regard to corrosion, the base material of the wetted parts (SS 316L, SS 316Ti, Hastelloy common corrosive media right up to even the highest temperatures. For further information on specific applications, contact the E+H Customer Service Department. Disassembled components of the sensors must be reassembled with the recommended clamping torques in order to ensure the appropriate IP protection class within the sensor-housing coupling.

® C276 or Inconel®600) can tolerate the

Endress+Hauser 3

Omnigrad S -TC63

≈

L> D/2+h

Fig. 2: Installation examples

METALLICSHEATH

ØD

welded coupling

THERMAL INSULATING

System components

Housing The protection housing, our "TA21H", commonly referred to the “connection head”, is used to contain and

protect the terminal block or the transmitter and to join the electric connections to the mechanical component.

The TA21H used for the TC66 is compliant with EN 50014/18 and EN 50281-1-1, EN 50281-1-2 standards (EEx-d certification for explosion proof type of protection). The matching of the head with the extension below the head and the cover (threaded) ensures a degree of protection from IP66 to

115

IP68. The head also has a chain to connect the body to the cover, which facilitates the use of the instrument during the maintenance on systems. The single or double threaded electrical cable entry can be: M20x1.5, 1/2” NPT or 3/4” NPT, G1/2".

Fig. 3: Housing TA21H

Ø90

½ NPT, NPT

G ½", M20x1.5

ø38 ø72

4 Endress+ Hauser

+ 8 hidden pages