Endress+Hauser M TR10 Specifications

TI00256T/09/EN/02.19 71443091

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Technical Information

Omnigrad M TR10

Modular RTD assembly thermowell and neck tube, thread

Application

• Universal range of application

• Measuring range: -200...600 °C (-328...1112 °F)

• Pressure range up to 75 bar (1088 psi)

• Degree of protection: up to IP 68

• Vibration-resistant sensor elements up to 60g

Head transmitters

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...20 mA

•HART

•PROFIBUS® PA

•FOUNDATION Fieldbus™

Your benefits

• High flexibility due to modular assembly with standard terminal heads and

• Highest possible compatibility with a design according to DIN 43772

• Neck tube for heat protection of head transmitter

• Fast response time with reduced/tapered tip form

• Types of protection for use in hazardous locations:

customized immersion length

Intrinsic Safety (Ex ia) Non-Sparking (Ex nA)

TR10

Function and system design

Measuring principle These resistance thermometers use a Pt100 temperature sensor according to IEC 60751. This

temperature sensor is a temperature-sensitive platinum resistor with a resistance of 100  at 0 °C (32 °F) and a temperature coefficient  = 0.003851 °C

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 (1112 °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). For this reason, thin-film sensors are generally only used for temperature measurements in ranges below 400 °C (932 °F).

-1

Measuring system

24V DC / 30 mA

4...20 mA

°C

20-250V DC/AC

Example of an application

A Thermometer with fitted head transmitter 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 active barrier (24 V DC, 30 mA) has an 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").

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TR10

Equipment architecture

10 mm

1 2

(0.4 in)

66a 6b

a0008847

Equipment architecture of the Omnigrad M TR10

12Insert ( 3 mm, 0.12 in) with mounted head

transmitter, for example Insert ( 6 mm, 0.24 in) with mounted ceramic

terminal block, for example 3Terminal head E Neck tube 4 Protection armature L Immersion length 5 Threads as process connection IL Insertion length = E + L + 10 mm (0.4 in)

Various tip shapes - detailed information see chapter ’tip shape’: Reduced or tapered for inserts with  3 mm (0.12 in)

Straight or tapered for inserts with  6 mm (0.24 in)

The Omnigrad M TR10 RTD assemblies are modular. The terminal head serves as a connection module for the protection armature in the process as well as for the mechanical and electrical connection of the measuring insert. The actual RTD sensor element is fitted in and mechanically protected within the insert. The insert can be exchanged and calibrated even during the process. Either ceramic terminal blocks or transmitters can be fitted to the internal base washer. Where required, threads or compression fittings can be fixed onto the protection armature.

Measurement range -200...+600 °C (-328...+1112 °F)

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Performance characteristics

100

150

200

250

300

350

150 200 250 300 350 400

P (bar)

150 200 250 300 350 400

L (mm)

P (bar)

100

150

200

250

300

350

L (in)

700

2100

2900

P (PSI)

1400

14 16

10 12 14 16

3600

4300

5000

700

2100

2900

P (PSI)

1400

3600

4300

5000

L (mm)

L (in)

Pmax. Pmax.

Operating conditions Ambient temperature

Terminal head Temperature in °C (°F)

Without mounted head transmitter Depends on the terminal head used and the cable gland or fieldbus

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

With mounted head transmitter and display

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.

TR10

connector, see 'Terminal heads' section,  ä 11

-20 to 70 °C (-4 to 158 °F)

Maximum permitted process pressure for tube diameter, limited to 75 bar (1088 psi) by the threaded process connection – Thermowell diameter 9 x 1 mm (0.35 in) ----------– PThermowell diameter 12 x 2.5 mm (0.47 in) - - - - - -

A Medium water at T = 50 °C (122 °F) P Process pressure BLMedium superheated steam at T = 400 °C (752 °F)

Immersion length

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Maximum permitted process pressure,

max.

limited by the process connection

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TR10

Permitted flow velocity depending on the immersion length

The highest flow velocity tolerated by the thermometer diminishes with increasing immersion length exposed to the stream of the fluid. In addition it is dependent on the diameter of the thermometer tip, on the kind of measuring medium, on the process temperature and on the process pressure. The following figures exemplify the maximum permitted flow velocities in water and superheated steam at a process pressure of 5 MPa (50 bar).

(ft/s)

145 130

115

100

65 50

30 15

v (m/s)

45 40 35 30 25 20 15 10

L (mm)

L (in)

100 200 300 400 500

12 16

Maximum flow velocity with: – Thermowell diameter 9 x 1 mm (0.35 in) ----------– Thermowell diameter 12 x 2.5 mm (0.47 in) - - - - - -

A Medium water at T = 50 °C (122 °F) L Immersion length B Medium superheated steam at T = 400 °C (752 °F) v Flow velocity

v (ft/s)

295 260 230 200

165

130 100

L (mm)

L (in)

v (m/s)

100 200 300 400 500

12 16 20

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45 40 35 30 25 20 15 10

L (mm)

L (in)

v (m/s)

100 200 300 400 450

4 8 12 16 18

Maximum flow velocity with: – Thermowell diameter 14 x 2 mm (0.55 in) ----------– Thermowell diameter 15 x 2 mm (0.6 in) - - - - - -

A Medium water at T = 50 °C (122 °F) L Immersion length B Medium superheated steam at T = 400 °C (752 °F) v Flow velocity

v (ft/s)

295 260 230 200

165

130 100

L (mm)

L (in)

v (m/s)

100 200 300 400

450

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(ft/s)

145 130 115

100

80 65 50

30 15

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Shock and vibration resistance

The Endress+Hauser inserts exceed the IEC 60751 requirements stating a shock and vibration resistance of 3g within a range of 10...500 Hz. The vibration resistance of the measurement point depends on sensor type and construction. Refer to the following table:

Sensor type Vibration resistance

• Pt100 (WW or TF) • 30 m/s² (3g)

•iTHERM

StrongSens Pt100 (TF)

QuickSens Pt 100 (TF), execution

Ø 6 mm (0.24 in)

1) Vibration resistance also applies for the quick-fastening iTherm QuickNeck.

Accuracy RTD corresponding to IEC 60751

Class max. Tolerances (°C) Characteristics

RTD max. error type TF - range:

Cl. AA,

± (0.1 + 0.0017 · |t| former 1/3 Cl. B

Cl. A ± (0.15 + 0.002 · |t|1))

Cl. B ± (0.3 + 0.005 · |t|1))

)

• >600 m/s² (60g)

Max. deviation (°C)

3.0

2.5

2.0

1.5

TR10

1) |t| = absolute value °C

1.0

0.5

-200 -100 0 100 200 300 400 500 600°C

- 0.5

- 1.0

- 1.5

- 2.0

- 2.5

- 3.0

Max. deviation (°C)

a0008588-EN

For measurement errors in °F, calculate using equations above in °C, then multiply the outcome by 1.8.

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TR10

Response time Tests in water at 0.4 m/s (1.3 ft/s), according to IEC 60751; 10 K temperature step change. Measuring

probe Pt100, TF/WW:

Thermowell

Diameter Response

time

Reduced tip  5.3 mm (0.2 in)

Tapered tip  6.6 mm (0.26 in) or

Straight tip

 9 mm (0.35 in)

9 x 1 mm (0.35 in)

11 x 2 mm (0.43 in)

12 x 2.5 mm (0.47 in)

14 x 2 mm (0.55 in)

15 x 2 mm (0.6 in)

7.5 s 21 s

not available not available

11 s 37 s

not available not available

11 s 37 s

not available not available

18 s 55 s

38 s 125 s

21 s 61 s

22 s 110 s

Response time for the sensor assembly without transmitter.

Insulation resistance Insulation resistance 100  at ambient temperature.

Insulation resistance between each terminal and the sheath is measured with a voltage of 100 V DC.

Self heating RTD elements are passive resistances that are measured using an external current. This measurement

current causes a self heating in the RTD element itself which in turn creates an additional measurement error. In addition to the measurement current the size of the measurement error is also affected by the temperature conductivity and flow velocity of the process. This self heating error is negligible when an Endress+Hauser iTEMP

temperature transmitter (very small measurement

current) is connected.

Calibration specifications Endress+Hauser provides comparison temperature calibration from -80 to +600 °C (-110 °F to 1112

°F) based on the International Temperature Scale (ITS90). Calibrations are traceable to national and international standards. The calibration report is referenced to the serial number of the thermometer. Only the measurement insert is calibrated.

Insert-Ø: 6 mm (0.24 in) and 3 mm (0.12 in)

Temperature range without head transmitter with head transmitter

-80 °C to -40 °C (-110 °F to -40 °F) 200 (7.87)

-40 °C to 0 °C (-40 °F to 32 °F) 160 (6.3)

0 °C to 250 °C (32 °F to 480 °F) 120 (4.72) 150 (5.9)

250 °C to 550 °C (480 °F to 1020 °F) 300 (11.81)

550 °C to 650 °C (1020 °F to 1202 °F) 400 (15.75)

Minimum insertion length IL in mm (in)

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