Endress+Hauser M TC13, M TR13 Specifications

TI01097T/09/EN/04.19 71444687 2019-06-05

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Technical Information

Omnigrad M TR13, TC13

Modular thermometer

TR13 with resistance insert (RTD) TC13 with thermocouple insert (TC)

Application

• Universal range of application

• Measuring range:

• Resistance insert (RTD): –200 to 600 °C (–328 to 1 112 °F)

• Thermocouple (TC): –40 to 1 100 °C (–40 to 2 012 °F)

• Pressure range up to 100 bar (1 450 psi)

• Degree of protection: up to IP 68

Head transmitter

All Endress+Hauser transmitters are available with enhanced accuracy and reliability compared to directly wired sensors. Easy customizing by choosing one of the following outputs and communication protocols:

• Analog output 4 to 20 mA

• HART

• PROFIBUS® PA

• FOUNDATION Fieldbus™

Your benefits

• High degree of flexibility thanks to modular design with standard terminal heads

• High degree of insert compatibility and design as per DIN 43772

• Extension neck to protect the head transmitter from overheating

• Fast response time with reduced/tapered tip form

• Types of protection for use in hazardous locations:

as per DIN EN 50446 and customer-specific immersion lengths

• Intrinsic Safety (Ex ia)

• Non-sparking (Ex nA)

Function and system design

Measuring principle Resistance thermometer (RTD)

These resistance thermometers use a Pt100 temperature sensor according to IEC 60751. The temperature sensor is a temperature-sensitive platinum resistor with a resistance of 100 Ω at 0 °C (32 °F) and a temperature coefficient α = 0.003851 °C-1.

There are generally two different kinds of platinum resistance thermometers:

• Wire wound (WW): Here, a double coil of fine, high-purity platinum wire is located in a ceramic support. This is then sealed top and bottom with a ceramic protective layer. Such resistance thermometers not only facilitate very reproducible measurements but also offer good long-term stability of the resistance/temperature characteristic within temperature ranges up to 600 °C (1 112 °F). This type of sensor is relatively large in size and it is comparatively sensitive to vibrations.

• Thin film platinum resistance thermometers (TF): A very thin, ultrapure platinum layer, approx. 1 μm thick, is vaporized in a vacuum on a ceramic substrate and then structured photolithographically. The platinum conductor paths formed in this way create the measuring resistance. Additional covering and passivation layers are applied and reliably protect the thin platinum layer from contamination and oxidation, even at high temperatures.

The primary advantages of thin film temperature sensors over wire wound versions are their smaller sizes and better vibration resistance. A relatively low principle-based deviation of the resistance/ temperature characteristic from the standard characteristic of IEC 60751 can frequently be observed among TF sensors at high temperatures. As a result, the tight limit values of tolerance category A as per IEC 60751 can only be observed with TF sensors at temperatures up to approx. 300 °C (572 °F).

Omnigrad M TR13, TC13

Thermocouples (TC)

Thermocouples are comparatively simple, robust temperature sensors which use the Seebeck effect for temperature measurement: if two electrical conductors made of different materials are connected at a point, a weak electrical voltage can be measured between the two open conductor ends if the conductors are subjected to a thermal gradient. This voltage is called thermoelectric voltage or electromotive force (emf.). Its magnitude depends on the type of conducting materials and the temperature difference between the "measuring point" (the junction of the two conductors) and the "cold junction" (the open conductor ends). Accordingly, thermocouples primarily only measure differences in temperature. The absolute temperature at the measuring point can be determined from these if the associated temperature at the cold junction is known or is measured separately and compensated for. The material combinations and associated thermoelectric voltage/temperature characteristics of the most common types of thermocouple are standardized in the IEC 60584 and ASTM E230/ANSI MC96.1 standards.

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Omnigrad M TR13, TC13

°C

= 20-250V DC/AC

» 50/60Hz

4...20 mA

24V DC / 30 mA

1 2

66a 6b

10 mm (0.4 in)

Measuring system

A0010442

 1 Application example

A Mounted thermometer with head transmitter installed. B RIA16 field display unit - The display unit records the analog measuring signal from the head transmitter and

shows this on the display. The LC display shows the current measured value in digital form and as a bar graph indicating a limit value violation. The display unit is looped into the 4 to 20 mA circuit and gets the required energy from there. More information on this can be found in the Technical Information (see "Documentation").

C Active barrier RN221N - The RN221N (24 V DC, 30 mA) active barrier has a galvanically isolated output for

supplying voltage to loop-powered transmitters. The universal power supply works with an input supply voltage of 20 to 250 V DC/AC, 50/60 Hz, which means that it can be used in all international power grids. More information on this can be found in the Technical Information (see "Documentation").

Design

 2 Thermometer design

1 Insert with head transmitter mounted (example with 3 mm (0.12 in)) 2 Insert with terminal block mounted (example with 6 mm (0.24 in)) 3 Terminal head 4 Thermowell 5 Process conneciton: flange 6 Various tip shapes - detailed information see chapter "Tip shape": 6a Reduced or tapered for inserts with 3 mm (0.12 in) 6b Straight or tapered for inserts with 6 mm (0.24 in) 7 Jacket (protective sheath) E Extension neck length L Immersion length IL Insertion length

A0010444

Endress+Hauser 3

Thermometers from the Omnigrad M TR13 and TC13 series have a modular design. The terminal head is used as a connection module for the mechanical and electrical connection of the insert. The position of the actual thermometer sensor in the insert ensures that it is mechanically protected. The insert can be exchanged and calibrated without interrupting the process. Either ceramic terminal blocks or transmitters can be fitted to the internal base washer.

Input

Omnigrad M TR13, TC13

Measuring variable

Measuring range

Temperature (temperature-linear transmission behavior)

Depends on the sensor type used

RTD resistance thermometer:

Sensor type Measuring range Connection type Temperature-resistant

length

Pt100 (IEC 60751, TF) iTHERM StrongSens

iTHERM QuickSens –50 to 200 °C

Pt100 thin film sensor (TF)

Pt100 wire-wound sensor (WW)

Basis Pt100 (TF) –50 to 200 °C

–50 to +500 °C (–58 to +932 °F)

(–58 to 392 °F)

–50 to 400 °C (–58 to 752 °F)

–200 to 600 °C (–328 to 1 112 °F)

(–58 to 392 °F)

3- or 4-wire 7 mm (0.27 in)

3- or 4-wire 5 mm (0.20 in)

3- or 4-wire 10 mm (0.39 in)

3- or 4-wire 2x3-wire

10 mm (0.39 in)

TC thermocouple:

Sensor type Measuring range Connection type Temperature-resistant

length

Type K –40 to 1 100 °C

(–40 to 2 012 °F)

Type J –40 to 750 °C

(–40 to 1 382 °F)

Type N –40 to 1 100 °C

(–40 to 2 012 °F)

Grounded or ungrounded Insert length

Wire resistance

Sensor type Insert diameter Wire resistance in Ω/m

(3.28 ft)

iTHERM StrongSens

iTHERM QuickSens 6 mm (0.24 in) 3 Ω 3- or 4-wire

iTHERM QuickSens 3 mm (0.12 in) 0.2 Ω 3- or 4-wire

1x thin film sensor (TF) 6.35 mm (¹⁄₄ in) 0.07 Ω 3- or 4-wire

2x thin film sensor (TF) 6.35 mm (¹⁄₄ in) 0.07 Ω 2x3-wire

1x wire wound sensor (WW)

2x wire wound sensor(WW)

1x wire wound sensor (WW)

2x wire wound sensor (WW)

1) It is recommended to use a 3- or 4-wire measurement. If using a 2-wire measurement the resistance of the

wires will influence the measured value.

6 mm (0.24 in) 3 Ω 3- or 4-wire

6.35 mm (¹⁄₄ in) 0.6 Ω 3- or 4-wire

6.35 mm (¹⁄₄ in) 0.6 Ω 2x3-wire

3 mm (0.12 in) 0.03 Ω 3- or 4-wire

3 mm (0.12 in) 0.17 Ω 2x3-wire

Connection type

Values are valid for single wire resistance and ambient temperature at 20 °C (68 °F)

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Omnigrad M TR13, TC13

Output

Output signal

Family of temperature transmitters

Generally, the measured value can be transmitted in one of two ways:

• Directly-wired sensors - sensor measured values forwarded without a transmitter.

• Via all common protocols by selecting an appropriate Endress+Hauser iTEMP temperature transmitter. All the transmitters listed below are mounted directly in the terminal head and wired with the sensory mechanism.

Thermometers fitted with iTEMP transmitters are an installation-ready complete solution to improve temperature measurement by significantly increasing accuracy and reliability, when compared to direct wired sensors, as well as reducing both wiring and maintenance costs.

4 to 20 mA head transmitters

They offer a high degree of flexibility, thereby supporting universal application with low inventory storage. The iTEMP transmitters can be configured quickly and easily at a PC. Endress+Hauser offers free configuration software which can be downloaded from the Endress+Hauser Website. More information can be found in the Technical Information.

HART® head transmitters

The transmitter is a 2-wire device with one or two measuring inputs and one analog output. The device not only transfers converted signals from resistance thermometers and thermocouples, it also transfers resistance and voltage signals using HART® communication. Swift and easy operation, visualization and maintenance using universal device configuration tools like FieldCare, DeviceCare or FieldCommunicator 375/475. Integrated Bluetooth® interface for the wireless display of measured values and configuration via E+H SmartBlue (app), optional. For more information, see the Technical Information.

PROFIBUS® PA head transmitters

Universally programmable head transmitter with PROFIBUS® PA communication. Conversion of various input signals into digital output signals. High accuracy over the complete ambient temperature range. The configuration of PROFIBUS PA functions and of device-specific parameters is performed via fieldbus communication. For more information, see the Technical Information.

FOUNDATION Fieldbus™ head transmitters

Universally programmable head transmitter with FOUNDATION Fieldbus™ communication. Conversion of various input signals into digital output signals. High accuracy over the complete ambient temperature range. All transmitters are released for use in all important process control systems. The integration tests are performed in Endress+Hauser's "System World". For more information, see the Technical Information.

Advantages of the iTEMP transmitters:

• Dual or single sensor input (optionally for certain transmitters)

• Pluggable display (optionally for certain transmitters)

• Unsurpassed reliability, accuracy and long-term stability in critical processes

• Mathematical functions

• Monitoring of the thermometer drift, sensor backup functionality, sensor diagnostic functions

• Sensor-transmitter matching for dual sensor input transmitters, based on Callendar/Van Dusen coefficients

Performance characteristics

Operating conditions Ambient temperature range

Terminal head Temperature in °C (°F)

Without mounted head transmitter

With mounted head transmitter –40 to 85 °C (–40 to 185 °F)

With mounted head transmitter and display

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Depends on the terminal head used and the cable gland or fieldbus connector, see 'Terminal heads' section

–20 to 70 °C (–4 to 158 °F)

Omnigrad M TR13, TC13

100

150

200

150 200 250 300 350 400

P (bar)

150 200 250 300 350 400

L (mm)

P (bar)

100

150

200

A B

L (in)

10 12

700

2100

2900

P (PSI)

1400

14 166

10 12 14 16

700

2100

2900

P (PSI)

1400

L (mm)

L (in)

P ~ PN100max.

P ~ PN60max.

Process pressure

The pressure values to which the actual thermowell can be subjected at the various temperatures and maximum permitted flow velocity are illustrated by the figure below. Occasionally, the pressure loading capacity of the process connection can be considerably lower. The maximum allowable process pressure for a specific thermometer is derived from the lower pressure value of the thermowell and process connection.

A0013494

 3 Maximum permitted process pressure for tube diameter

A Medium water T = 50 °C (122 °F) B Medium superheated steam at T = 400 °C (752 °F) L Immersion length P Process pressure ___ Thermowell diameter 9 x 1 mm (0.35 in)

- - - Thermowell diameter 12 x 2.5 mm (0.47 in)

Note the limitation of the maximum process pressure to the flange pressure ratings indicated in the following table.

Process connection

Flange EN1092-1 or ISO

Standard Max. process pressure

Depending on the flange pressure rating PNxx:

7005-1

ASME B16.5 Depending on the flange pressure rating 150 or 300 psi at

JIS B 2220 Depending on the flange pressure rating 20K, 25K or 40K

DIN2526/7 Depending on the flange pressure rating PN40 at 20 °C (68 °F)

20, 40, 50 or 100 bar at 20 °C (68 °F)

20 °C (68 °F)

Maximum flow velocity

The highest flow velocity tolerated by the thermowell diminishes with increasing immersion length exposed to the stream of the fluid. Detailed information may be taken from the figures below.

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Omnigrad M TR13, TC13

100 200 300 400 500

v (m/s)

100 200 300 400 500

v (m/s)

12 16 20

12 16

v (ft/s)

L (mm)

L (in)

100

130

165

200

230

260

295

100

115

130

145

L (mm)

L (in)

A0008605

 4 Flow velocity depending on the immersion length

A Medium water at T = 50 °C (122 °F) B Medium superheated steam at T = 400 °C (752 °F) L Immersion length v Flow velocity ___ Thermowell diameter 9 x 1 mm (0.35 in)

- - - Thermowell diameter 12 x 2.5 mm (0.47 in)

Shock and vibration resistance

Endress+Hauser inserts comply the IEC 60751 requirements stating a shock and vibration resistance of 3g within a range of 10 to 500 Hz.

The vibration resistance of the measurement point depends on sensor type and construction. Refer to the following table:

Sensor type Vibration resistance for the thermowell tip

Accuracy

Pt100 (WW or TF) 30 m/s2 (3g)

iTHERM® StrongSens Pt100 (TF) iTHERM® QuickSens Pt100 (TF), version: 6 mm (0.24 in)

1) Vibration resistance valid also for iTHERM QuickNeck

> 600 m/s2 (60g) for thermowell tip

Permissible deviation limits of thermoelectric voltages from the standard characteristic for thermocouples as per IEC 60584 or ASTM E230/ANSI MC96.1:

Standard Type Standard tolerance Special tolerance

IEC 60584 Class Deviation Class Deviation

J (Fe-CuNi) 2 ±2,5 °C (–40 to 333 °C)

1) |t| = absolute value in °C

K (NiCr-NiAl) 2 ±2,5 °C (–40 to 333 °C)

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±0,0075 |t|

(333 to 750 °C)

(333 to 1 200 °C)

1 ±1,5 °C (–40 to 375 °C)

±0,004 |t|

1 ±1,5 °C (–40 to 375 °C)

±0,004 |t|

(375 to 750 °C)

(375 to 1 000 °C)

Standard Type Standard tolerance Special tolerance

-200 -100 0 100 200 300 400 500 600°C

0.5

1.0

1.5

2.0

2.5

3.0

- 0.5

- 1.0

- 1.5

- 2.0

- 2.5

- 3.0

Max. deviation (°C)

ASTM E230/ANSI MC96.1

1) |t| = absolute value in °C

RTD resistance thermometer as per IEC 60751

Class max. tolerances (°C) Characteristics

RTD maximal error Type TF

Cl. A ± (0,15 + 0,002 · |t|

Cl. AA,

± (0,1 + 0,0017 · |t|) former 1/3 Kl. B

Cl. B ± (0,3 + 0,005 · |t|)

)

Deviation, the larger respective value applies

J (Fe-CuNi) ±2,2 K or ±0,0075 |t|

K (NiCrNiAl)

±2,2 K oder ±0,02 |t| ±2,2 K or ±0,0075 |t|

Omnigrad M TR13, TC13

(0 to 760 °C) ±1,1 K or ±0,004 |t|

(0 to 760 °C)

(–200 to 0 °C)

(0 to 1 260 °C)

±1,1 K or ±0,004 |t| (0 to 1 260 °C)

1) |t| = absolute value in °C

In order to obtain the maximum tolerances in °F, the results in °C must be multiplied by a factor

Response time

of 1.8.

Calculated at an ambient temperature of approx. 23 °C by immersing in running water (0.4 m/s flow rate, 10 K excess temperature):

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Complete assembly:

Thermometer type

Resistance thermometer (measuring probe Pt100, TF/WW)

Diameter t

9 mm (0.35 in) t

Reduced tip Tapered tip Straight tip

(x)

7.5 s 11 s 18 s

21 s 37 s 55 s

A0008588-EN

Omnigrad M TR13, TC13

Thermometer type

Thermocouple

Diameter t

11 mm (0.43 in) t

12 mm (0.47 in) t

Diameter t

9 mm (0.35 in)

11 mm

(0.43 in)

12 mm

(0.47 in)

Reduced tip Tapered tip Straight tip

(x)

7.5 s not available 18 s

(x)

Reduced tip

5.5 s 9 s 15 s 6 s 9.5 s 16 s

13 s 31 s 46 s 14 s 33 s 49 s

5.5 s not

13 s not

not

available

not

available

21 s not available 55 s

not available 11 s 38 s

not available 37 s 125 s

Grounded Ungrounded

Tapered tip

Straight tip

Reduced tip

15 s 6 s not

available

46 s 14 s not

available

8.5 s 32 s not available

20 s 106 s not

available

Tapered tip

available

9 s 34 s

22 s 110 s

Straight tip

16 s

49 s

Response times for insert without transmitter.

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