Endress+Hauser TMR35 Specifications

TI00123R/09/EN/18.18 71425038

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Technical information

Easytemp TMR31, TMR35

Compact thermometer, Pt100, Class A Optionally with integrated 4 to 20 mA

transmitter, programmable via PC

Application

The Easytemp TMR31 and TMR35 compact thermometers are used to measure temperatures from -50 °C to 150 °C (-58 °F to 302 °F), or up to 200 °C (392 °F) with neck. The most common installation locations are tanks and pipes.

• TMR31 with process connections for general applications.

• TMR35 with process connections for hygienic applications.

Benefits at a glance

Quick installation and easy commissioning:

• Small, compact design made entirely of stainless steel

• M12 connector with IP69K for an easy electrical connection

• 4-wire, Pt100 or PC-programmable transmitter with 4 to 20 mA output

• Configuration and visualization with ReadWin 2000 PC operating software, which is free of charge

• Preset measuring range is available for order

• Variable insertion lengths from 40 mm to 600 mm (1.6 to 23.6 in)

Outstanding metrological properties thanks to innovative sensor technology:

• Extremely short response times

• Highly accurate even with short insertion lengths

• Thin film sensor element Pt100, accuracy class A (IEC 60751)

Safe operation with approvals and certificates:

• UL recognized component

• Meets all EMC requirements according to NAMUR NE21

• Breakdown information in event of sensor break or sensor short-circuit, adjustable as per NAMUR NE43

• TMR35: Hygienic compatible design with 3-A marking and EHEDG certification

• Marine approval

TMR31, TMR35

ENDRESS+HAUSER RN 221 N

Function and system design

Measuring principle Electronic recording and conversion of Pt100 input signals in industrial temperature measurement.

Measuring system The compact thermometer uses a Pt100 (Class A) sensor element for measurement. The device is

available with a Pt100 4-wire connection or, optionally, with an analog, temperature-linear 4 to 20 mA output signal. A built-in transmitter in the device converts the Pt100 input signal into the 4 to 20 mA signal and can be programmed using a PC via the M12 connector. The compact thermometer has different process connections for general (TMR31) and hygienic applications (TMR35). The Easytemp TMR31, TMR35 has a new kind of thin film sensor element that is soldered directly into the sensor tip. This innovative sensor design ensures ideal heat transfer from the process to the sensor element. This means that extremely fast response times and high levels of accuracy can be achieved even with short insertion lengths.

1 IN 2

3 OUT 4

HAW562

ENDRESS+HAUSER

Ecograph T

RN 221 N

RN221 N

3 OUT 4

HAW562

1 IN 2

TMR31

Measuring point layout (example) for Easytemp compact thermometer TMR31 with additional Endress+Hauser components Ecograph T, active barrier RN221 N and HAW562 surge arrester

A0006994

Multi Channel Recorder Ecograph T

Multi-channel recorder Ecograph T in 144 x 144 mm (5.7 x 5.7 in) panel-mounted housing for the electronic detection, display, recording, analysis, remote transmission and archiving of analog and digital input signals. Data recording system on CompactFlash card, multi-colored LCD display, 120 mm (4.72 in) screen size. Configuration and measured value display via interfaces (USB, Ethernet, RS232/

485) and ReadWin 2000 PC operating software.

Active barrier RN221 N

Active barrier with power supply for the safe separation of 4 to 20 mA standard signal circuits with optional intrinsically safe input. The current applied by the transmitter of the compact thermometer in the input circuit (4 to 20 mA) is transmitted linearly to the output.

Surge arrester HAW562

Protects consumer installations or measuring devices as well as signal lines and components against overvoltage which is induced by lightning striking in the distance or through switching operations. The HAW562 module acts as an overvoltage protection system in terminal block systems to protect signal lines and components and is installed on a module carrier (HAW560).

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TMR31, TMR35

Input

Measuring principle Temperature (temperature-linear transmission behavior)

Measuring range

Designation Measuring range limits Min. span

Pt100 as per IEC 60751 -50 to 150 °C (-58 to 302 °F) without neck

Output

Output signal • Standard: Pt100, Class A, 4-wire

• Optional: 4 to 20 mA or 20 to 4 mA

Signal on alarm Signal on alarm as per NAMUR NE43

• Underranging: Linear drop to 3.8 mA

• Overranging: Linear rise to 20.5 mA

• Sensor break; sensor short-circuit:

 3.6 mA or  21.0 mA (at settings  21.0 mA, 21.5 mA output is guaranteed)

Maximum load (U

power supply

Min. current consumption  3.5 mA

Current limit  23 mA

Switch-on delay 2 s

- 10 V) / 0.023 A (current output)

10 K (18 °F)

-50 to 200 °C (-58 to 392 °F) with neck

Electrical connection

Power supply

Electrical connection cables must comply with 3-A sanitary standard, must be smooth, corrosion resistant and cleanable.

1 (BN) + 2 (WH) nc 3 (BU) 4 (BK) nc

M12x1

10...35 VDC (4-20 mA)

A: with electronics, M12 plug, 4-pin Pin 1: power supply 10 to 35 V DC; current output 4 to 20 mA (cable connection, wire color brown = BN) Pin 2: connection of PC configuration cable - shortened pin (cable connection, wire color white = WH) Pin 3: power supply 0 V DC; current output 4 to 20 mA (cable connection, wire color blue = BU) Pin 4: connection of PC configuration cable - shortened pin (cable connection, wire color black = BK)

B: without electronics, Pt100, 4-wire connection

3 0 V (4-20 mA)

Pt100

A0020176

Supply voltage Ub= 10 to 35 V DC

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TMR31, TMR35

Residual ripple Permitted residual ripple Uss  3 V at Ub  13 V, f

Performance characteristics

Response time  3 s with transmitter

Reference operating conditions

Maximum measured error Electronics

• Matching temperature (ice bath) 0 °C (32 °F) for Pt100 sensor

• Ambient temperature 25 °C ± 5 °C (77 °F ± 9 °F) for transmitter

0.1 K (0.18 °F) or 0.08%. % relates to the set span. The larger value applies.

Sensor (Pt100) for version without transmitter

• Tolerance class A as per IEC 60751, operating temperature range -50 to 200 °C (-58 to 392 °F) with neck

• Maximum measured error in °C = 0.15 + 0.002  T

T = Numerical value of the temperature in °C without regard to the leading sign.

Total deviation of electronics + sensor

• Operating temperature range:

-50 to 150 °C (-58 to 302 °F) without neck

-50 to 200 °C (-58 to 392 °F) with neck

• 0.25 K + 0.002 T

max.

= 1 kHz

Long-term stability of electronics

Influence of ambient temperature (temperature drift)

 0.1 K (0.18 °F)/year or  0.05%/year Data under reference conditions. % relates to the set span. The larger value applies.

• Pt100 resistance thermometer: T

= ±(15 ppm/K * (full scale value of measuring range + 200) + 50 ppm/K * set measuring range)

* T T= deviation of ambient temperature from the reference operating condition.

Influence of load ± 0.02%/100 

Specifications refer to the full scale value of the measuring range.

Transmitter response time 1 s

Sensor response time Measured as per IEC 60751, in water flowing at 0.4 m/s (1.3 ft/s)

< 1.0 s < 2.0 s

Influence of supply voltage  ± 0.01%/V deviation from 24 V

Specifications in percent refer to the full scale value of the measuring range.

Self-heating Negligible small

Sensor current  0.6 mA

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TMR31, TMR35

Installation conditions

Orientation No restrictions. However, self-draining in the process must be guaranteed. If there is an opening to

detect leaks at the process connection, this opening must be at the lowest possible point.

Installation instructions Mounting location

The insertion length of the compact thermometer can have a substantial influence on the accuracy. If the insertion length is insufficient, heat dissipation via the process connection and the container wall can cause measurement errors. To minimize errors caused by heat dissipation, a minimum insertion length of L

= 40 mm (1.6 in) is recommended.

min

A0020345

³ 3°

TMR31 - general applications TMR35 - hygienic applications

Pipe installation of the compact thermometer:

• A: On angle brackets

• B: In smaller pipes, inclined

• C: Perpendicular to the direction of flow, TMR35 with minimal 3° inclination because of self draining

• L = Insertion length

A0012591

Groove slip-on nut

Companion Companion connection

Centering rin g

Mounting instructions for installation in various hygienic processes

Milk pipe connection as per DIN 11851 only in connection EHEDG certified and self centering ring

to EHEDG position paper

Clamp as per ISO 2852, only in connection with seal according to EHEDG position paper

Liquiphant-M G1" process connection, horizontal installation

connection

Sealing

R0.4

O-rin g

Shaped gasket

Companion connection

Pressure rin g

O-rin g

Welding boss

Vessel wall

A0011758-EN

The matches for the process connections as well as the gaskets are not included in the scope of delivery of this assembly. Welding adapter for process connections with associated O-ring sets are available as accessories,  15.

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Procedure in case of seal failure indicated by leak detection port:

• Disassembling of the thermometer, validated cleaning procedure of thread and sealing ring groove

• Replacement of the seal or sealing ring

• CIP after re-assembly

In the case of weld-in connections, exercise the necessary degree of care when performing the welding work on the process side:

• Suitable weld material.

• Flush welding or with welding radius > 3.2 mm.

• Absence of pits, folds, crevices.

• Ground and polished surface (R

As a general rule, the thermometers should be installed in such a way that does not adversely affect their cleanability (3-A requirements must be adhered to). The required flush-mounting can be achieved by the connection Varivent

Environment conditions

Ambient temperature limits -40 to +85 °C (-40 to 185 °F)

 0.76 μm).

, Liquiphant (+ weld-in adapter).

TMR31, TMR35

Storage temperature -40 to +85 °C (-40 to 185 °F)

Altitude

Up to 2000 m (6600 ft) above mean sea level

Climate class As per IEC 60654-1, Class C

Degree of protection IP66/67 with coupling and connecting cable (not evaluated by UL)  15

IP69K with cordset (not evaluated by UL)  15

Shock resistance 4g / 2 to 150 Hz as per DIN EN60068-2-6

Vibration resistance Refer to ’Shock resistance’

Electromagnetic compatibility (EMC)

EMC to all relevant requirements of the IEC/EN 61326- series and NAMUR NE21. For details see declaration of conformity.

ESD (Electrostatic discharge) IEC/EN 61000-4-2 6 kV cont., 8 kV air

Electromagnetic fields IEC/EN 61000-4-3 0.08 to 2 GHz 10 V/m

Burst (fast transient) IEC/EN 61000-4-4 2 kV

Surge IEC/EN 61000-4-5 0.5 kV sym.

Conducted RF IEC/EN 61000-4-6 0.01 to 80 MHz 10 V

All EMC measurements were performed with a turn down (TD) = 2:1. Maximum fluctuations during EMC- tests: < 1 % of measuring span. Interference immunity to IEC/EN 61326 - series, requirements for industrial areas Interference emission to IEC/EN 61326 - series, electrical equipment Class B.

Condensation Permitted

Electrical safety • Protection class III

• Overvoltage category II

• Pollution degree 2 III

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TMR31, TMR35

Process conditions

Process temperature limits The electronics of the TMR31 and TMR35 must be protected from temperatures above 85 °C (185 °F)

by a neck of appropriate length. TMR31 and TMR35 compact thermometers without electronics (Pt100, 4-wire) do not require a neck.

• -50 to 150 °C (-58 to 302 °F) without neck

• -50 to 200 °C (-58 to 392 °F) with neck

• -50 to 200 °C (-58 to 392 °F) without electronics

Restrictions depending on process connection and ambient temperature:

• For installation with adjustable insertion length (welding boss with sealing taper, Order No. 51004751; collar welding boss Order No. 51004752; compression fitting with sealing taper, Order No. 51004753) provide a neck with an appropriate length.

• For TMR31 with process connection:

Max. ambient temperature Max. process temperature

Without neck With neck 35 mm (1.38 in)

Up to 25 °C (77 °F) 150 °C (302 °F) 200 °C (392 °F)

Up to 40 °C (104 °F) 135 °C (275 °F) 180 °C (356 °F)

Up to 60 °C (140 °F) 120 °C (248 °F) 160 °C (320 °F)

Up to 85 °C (185 °F) 100 °C (212 °F) 133 °C (271 °F)

Process pressure limits Maximum permitted process pressure depending on the insertion length. It is limited further by the

process connection in question. Follow the designs of process connection in section "Mechanical construction" and section "Accessories".

P (psi)

P (bar)

1500

100

1200

Maximum permitted process pressure L Insertion length p Process pressure

900

600

300

0 30 60 90 120 150 180 210 240 270 300

01234 5 78910

L (mm)

L (in)

A0008063

The diagram takes into consideration not only the overpressure but also the pressure load caused by the flow, whereby a safety factor of 1.9 has been specified for operation with flow. The maximum permitted static operating pressure is lower at greater insertion lenghts due to the increased bending load caused by the flow. The calculation assumes the maximum permitted medium velocity for the respective insertion length (see diagram below).

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