Endress+Hauser TH15, TH13 Specifications

TI00110R/09/EN/15.18 71404936 2018-05-31

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Technical Information

RTD TH13, TH14 and TH15

RTD assemblies in thermowells with spring loaded insert and enclosure for process industry

Application

The TH13, TH14 and TH15 temperature sensors are RTD assemblies installed in Thermowells and designed for use in all types of process industries, including harsh environments, due to their rugged design. The sensor is made up of a measurement probe with an insulated RTD element, sheath and a thermowell made of bar-stock material.

Among other applications the sensors can be used in process industries such as:

• Chemicals & petrochemical

• Power plants

• Refineries

• Offshore platforms

Head Transmitter

All Endress+Hauser transmitters are available with enhanced accuracy and reliability compared to directly wired sensors. Instead of directly wiring your temperature sensors to your control system, use transmitters to reduce wiring and maintenance costs while increasing measurement accuracy.

Field Transmitter

Temperature field transmitters with HART® or FOUNDATION Fieldbus™ protocol for highest reliability in harsh industrial environments. Backlit display with large measured value, bargraph and fault condition indication for ease of reading.

Your benefits

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

• One Source shopping for temperature measurement solutions. World class transmitter with integrated sensor offering for heavy process industry applications.

- Remove and Install straight out of the box!

• Improved Galvanic Isolation on most devices (2 kV)

• Simplified Model Structure: Competitively priced, offers great value. Easy to order and reorder. A single model number includes sensor and transmitter assembly for a complete point solution

• All iTEMP transmitters provide long term stability ≤ 0.05 % per year

• Fast response time with reduced/tapered tip form

Function and system design

KEEPTIGHTW

CIRCUITALIVE

INEXPLOSIV

MOSPHERE

°C

°F

100

I N

E X P

L O S I V E A T M O S P

H E R

°C

°F

100

Endress+Hauser RMS 621

Δp (Q)

Deltabar S

TMT162

RMS621

TH14

flanged thermowell

TH13 tilted,

threaded

thermowell

Heat exchange process

RTD TH13, TH14 and TH15

Measuring principle

Measuring system

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 Ω at 0 °C (32 °F) and a temperature coefficient is 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). For this reason, thin-film sensors are generally only used for temperature measurements in ranges below 400 °C (932 °F).

A0028125-EN

 1 Example of an application of the temperature assemblies

Water - heat Differential

Calculation of heat quantity which is emitted or absorbed by a water flow in a heating or cooling system. The quantity of heat is calculated from the process variable for Dp flow (Q) and the differential from the feed and return temperature (T2 - T1). Bidirectional energy calculations, such as the calculating systems with changing flow direction (charging/discharging the heat accumulator) are also possible.

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Energy manager RMS621

Energy conservation and cost expenditures are significant issues in today's industry. Accurate flow monitoring and calculation is the basis for thorough analysis and billing of energy. This data can serve as a basis to maximize savings potential and help in controlling operational costs on a daily basis. Endress+Hauser's energy managers provide accurate and reliable calculations for the

RTD TH13, TH14 and TH15

monitoring and control of energy consumption (both produced and consumed) according to international standards, e.g. IAPWS-IF 97, AGA8, ISO 5167 etc. For RMS621 details see Technical Information.

iTEMP TMT162 Temperature Field Transmitter

Aluminum or stainless steel dual compartment explosion - proof enclosure and compact, fully potted electronics provide the ultimate protection in harshest environments. TMT162 prevents costly plant shutdowns by detecting corrosion on RTDs or thermocouples before it corrupts the measured value. Endress+Hauser's Field Temperature Transmitters with backlit display and sensor backup functionality are designed with safety in mind to keep your plant, equipment and personnel safe. For TMT162 details see Technical Information.

Deltabar S/Cerabar S

The evolution series of Cerabar S/Deltabar S represents a decisive step ahead in making pressure instrumentation better and safer for the process industry. The development of new products thrives especially on the knowledge, commitment and experience of staff members. Permanent high performance can only be achieved if dedicated and enthusiastic people provide their ideas. Endress +Hauser's instruments are not only supposed to distinguish themselves for customers and users by technological novelties but also by the presence of people supporting this progress, be it in service, sales or production. For Deltabar S & Cerabar S details see Technical Information.

Equipment architecture

Measured variable

Measuring range

The single and duplex element RTDs are designed to measure temperature in a variety of process and laboratory applications. These RTDs are specifically designed for use in two different process temperature ranges and they will provide accurate and repeatable temperature measurement through a broad range of –200 to 600 °C (–328 to 1 112 °F). Low range thin film RTDs –50 to 200 °C (–58 to 392 °F) are constructed using silver plated copper internal leads, PTFE wire insulations with potting compounds to resist moisture penetration. High range RTDs –200 to 600 °C (–328 to 1 112 °F) are constructed with nickel internal leads inside swaged MgO insulated cable to allow higher temperature measurements at the RTD element and to provide higher temperature lead protection along the sheath.

Input

Temperature (temperature-linear transmission behavior)

Construction Model code (class and type of sensor) max. range

TH13-_ _ _ _ _(A/C/E/G/J/L) _ _ _ _ _

Low temperature range

TH15-_ _ _ (A/C/E/G/J/L) _ _ _ _ _

TH13-_ _ _ _ _(B/D/F/H/K/M) _ _ _ _ _

High temperature range

TH15-_ _ _ (B/D/F/H/K/M) _ _ _ _ _ _

–50 to 200 °C (–58 to 392 °F)TH14-_ _ _ _ _(A/C/E/G/J/L) _ _ _ _ _

–200 to 600 °C (–328 to 1 112 °F)TH14-_ _ _ _ _(B/D/F/H/K/M) _ _ _ _ _

Options J, K, L, M are duplex platinum elements of two sensors inside the same sheath.

Output

Output signal

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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 or as field transmitter and wired with the sensory mechanism.

RTD TH13, TH14 and TH15

Family of temperature transmitters

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.

PC programmable 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® programmable 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. It can be installed as an intrinsically safe apparatus in Zone 1 hazardous areas and is used for instrumentation in the terminal head (flat face) as per DIN EN 50446. Swift and easy operation, visualization and maintenance using universal device configuration tools like FieldCare, DeviceCare or FieldCommunicator 375/475. 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

Galvanic isolation

Galvanic isolation of Endress+Hauser iTEMP transmitters

Transmitter type Sensor

TMT181 PCP Û = 3.75 kV AC

TMT182 HART® U = 2 kV AC

TMT162 HART® Field transmitter U = 2 kV AC

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RTD TH13, TH14 and TH15

RTD

3-wire

4-wire

Power supply head transmitter and analog output 4 to 20 mA, or bus connection

(red) (red) (red) (red)

(white) (white)

(white)

Sensor input 2

Sensor input 1

RTD 4- and 3-wire:

RTD 3-wire:

Bus connection

and supply voltage

Display connection

red

white

red

white

(black)

(green)

Power supply

Terminal assignment

Type of sensor connection

Head mounted transmitter TMT18x (single input)

A0016433-EN

Head mounted transmitter TMT8x (dual input)

A0029556-EN

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Field mounted transmitter

RTD

5 6

RTD

(black) (black)

4-wire

3-wire

Power supply field transmitter and analog output 4 to 20 mA or bus connection

Sensor 1

Sensor 2 (not TMT142)

Sensor 1

Sensor 2 (not TMT142)

(white) (red) (white) (red)

(green)

3-wire single

2 x 3-wire single

Outside screw

4-wire single

W5 = White5

W3 = White3

G4 = Green4

R3 = Red3

R2 = Red2

B6 = Black6

R1 = Red1

B5 = Black5

W6 = White6

W4 = White4

R3 = Red3

R1 = Red1

RTD TH13, TH14 and TH15

Terminal block mounted

The blocks and transmitters are shown as they sit inside the heads in reference to the conduit opening.

Integrated overvoltage protection

The integrated overvoltage protection module can be ordered as an optional extra protects the electronics from damage from overvoltage. Overvoltage occurring in signal cables (e.g.

1) Available for the field transmitter with HART® 7 specification

. The module

A0024961-EN

A0025284-EN

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RTD TH13, TH14 and TH15

Sensor 2

Sensor 1

Bus connection and supply voltage

190 (7.48)

26.5 (1.040)

NPT 1/2”

1 3

2 4

4 to 20 mA, communication lines (fieldbus systems) and power supply is diverted to ground. The functionality of the transmitter is not affected as no problematic voltage drop occurs.

Connection data:

Maximum continuous voltage (rated voltage) UC = 42 V

Nominal current I = 0.5 A at T

Surge current resistance

• Lightning surge current D1 (10/350 µs)

• Nominal discharge current C1/C2 (8/20 µs)

• I

• In = 5 kA (per wire)

amb.

= 1 kA (per wire)

imp

= 80 °C (176 °F)

In = 10 kA (total)

Temperature range –40 to +80 °C (–40 to +176 °F)

Series resistance per wire 1.8 Ω, tolerance ±5 %

 2 Electrical connection of the overvoltage protection

A0033027-EN

Grounding

The device must be connected to the potential equalization. The connection between the housing and the local ground must have a minimum cross-section of 4 mm2 (13 AWG) . All ground connections must be secured tightly.

Fieldbus connector

Type (dimensions in mm (in)) Specification

Fieldbus connector to PROFIBUS® -PA or FOUNDATION Fieldbus™

A M12 on PROFIBUS® -PA connector or 7/8-16

UNC on FOUNDATION Fieldbus™ connector

• Ambient temperature: –40 to 150 °C (–40 to 300 °F)

• Degree of protection IP 67

Wiring diagram:

A0028083

PROFIBUS® -PA Pos. 1: grey (shield) Pos. 2: brown (+) Pos. 3: blue (-) Pos. 4: not connected

A0006023

FOUNDATION Fieldbus™ Pos. 1: blue (-) Pos. 2: brown (+) Pos. 3: not connected Pos. 4: ground (green/ yellow)

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RTD TH13, TH14 and TH15

Wire specifications

Response time

24 AWG, 19 strand silver plated copper with 0.025 mm (0.010 in) PTFE extruded outer.

Electrical connection

Flying leads, standard 3" for wiring in terminal head, head mounted transmitter or terminal block mounted

Flying leads, 5½" for wiring with TMT162 or TMT142 assemblies

Design of leads

Flying leads 3" or 5½" with brass crimped sleeves

A0026119

Performance characteristics

63% response time per ASTM E644

RTD assembly TH15 without thermowell

Construction RTD Ø ¼"

High temperature range 3 s

Low temperature range 9 s

Response time for the sensor assembly without transmitter.

Response time examples for RTD assemblies with thermowell TH13 and TH14

Construction Stepped thermowell Tapered thermowell ¾" straight thermowell

High temperature range 20 s 25 s 30 s

Low temperature range 25 s 30 s 35 s

Response times for RTD assemblies with thermowell are provided for general design guidance without transmitter.

When the temperature of a process media changes, the output signal of a RTD assembly follows this change after a certain time delay. The physical cause is the time related to heat transfer from the process media through the thermowell and the insert to the sensor element (RTD). The manner in which the reading follows the change in temperature of the assembly over time is referred to as the response time. Variables that influence or impact the response time are:

• Wall thickness of thermowell

• Spacing between RTD insert and thermowell

• Sensor packaging

• Process parameters such as media, flow velocity, etc.

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