Endress+Hauser TTR31 Specifications

TI00105R/09/EN/15.18 71415693

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Technical Information

Temperature Switch Thermophant T TTR31, TTR35

Temperature switch for the safe measurement, monitoring and control of process temperatures

Application

Temperature switch for the monitoring, display and control of process temperatures in a range from -50 to 200 °C (-58 to 392 °F):

Thermophant T TTR31 - with thread connections or coupling Thermophant T TTR35 - for hygienic applications

• Versions for use in hygienic applications

• Electronic versions – one PNP switch output – two PNP switch outputs – 2 x PNP switch outputs or one PNP switch output and 4 to 20 mA output (active)

Benefits at a glance

This compact temperature switch impresses with the latest in technology being used:

• Integrated switching electronics for decentral and economic process monitoring and control

• High reproducibility and long-term stability

• Function check and information onsite thanks to LEDs and digital display

• Long-term stable temperature sensor made of platinum (Pt100 class A as per IEC 60751)

• High accuracy across the entire ambient temperature range and short response time

• Operation and visualization also with PC and ReadWin 2000 or FieldCare configuration software

• Upper part of housing can be rotated by 310°

• DESINA-compliant

• TTR35: 3-A marked

TTR31, TTR35

Function and system design

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

platinum sensor located at the measuring tip changes its resistance value depending on the temperature. This resistance value is recorded electronically. The relation of the measured resistance value and temperature is defined by the international standard IEC 60751.

Measuring system Overview

Thermophant product family

Sensor element

Field of application

Process connection

TTR31 TTR35

A0005276

Pt100 Pt100

Measurement and monitoring and control of process temperatures.

• Coupling, sensor length  100 mm (3.94 in)

•Thread

 G½" and G¼"  ANSI NPT ¼" and NPT ½"

Measurement and monitoring and control of process temperatures in hygienic processes.

•Hygiene

 Conical metal-metal G½"  Clamp 1" - 1½", 2"  Varivent F, N  DIN 11851  APV inline

A0023194

Measuring range (process temperature range)

-50 to +150 °C (-58 to +302 °F)

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

-50 to +150 °C (-58 to +302 °F)

-50 to +200 °C (-58 to +392 °F) with neck in hygienic processes

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TTR31, TTR35

RNB130

24V OVOV24V OV

INAC

24V 13

RNB130

24V OVOV24V OV

INAC

24V 13

RNB130

24V OVOV24V OV

INAC

24V 13

DC voltage version

PNP switch output of electronics. Power supply e.g. with a power supply unit. Preferably in conjunction with programmable logic controllers (PLC) or for controlling a relay.

A0023242

A: 1x PNP switch output B: 2x PNP switch output C: PNP switch output with additional analog output 4 to 20 mA



Power supply unit e.g. RNB130



Load (e.g. programmable logic controller, process control system, relay)



Display e.g. RIA452 or recorder e.g. Ecograph T or Minilog B (at 4 to 20 mA analog output)



Power supply “Easy Analog RNB130”:

Primary switched-mode power supply for sensors. Space saving DIN rail mounting as per IEC 60715. Wide-range nominal voltage input: 100 to 240 V AC; Output: 24 V DC, max. 30 V in the event of a fault; Nominal output current: 1.5 A. Connection to monophased a.c. networks or to two phase conductors of three-phase supply networks.



Process display RIA452:

If you would like to read off the instantaneous value of the temperature not only locally, but also e.g. directly from a control room or in the PC network, then one suitable device is the process display RIA452: Digital process display unit in 96 x 96 mm (3.78 x 3.78 in) panel mounted housing for monitoring and displaying analog measured values with pump control and batch functions. Multicoloured 7-digit 14-segment LC display with large bargraph. Configuration and visualisation via RS232 interface and ReadWin 2000 PC operating software.



Universal Graphic Data Recorder Ecograph T, Data logger Minilog B:

If you would like to read off the instantaneous value of the temperature not only locally, but also record, analyze and display it e.g. directly from a control room or in the PC network, then the following devices are suitable:

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• Universal Graphic Data Manager Ecograph T 144 x 144 mm (5.67 x 5.67 in) panel mounted housing for electronic acquisition, display, recording, analysis, remote transmission and archiving of analog and digital input signals. Multichannel data recording system with multicoloured TFT display (145 mm (5.7 in) screen size), galvanically isolated universal inputs (U, I, TC, RTD, pulse, frequency), digital inputs, transmitter power supply, limit relay, communication interfaces (USB, Ethernet, optional RS232/485), 128 MB internal memory, external SD card and USB stick. The Field Data Manager Software (FDM) supports data analysis at the PC; configuration is done via FieldCare or the integrated web server.

• Data logger Minilog B Battery powered measured value collector with 2 input channels for storing analog and digital values. Internal memory 128 kB for max. 84000 measured values. Configuration and visualisation via RS232 interface and ReadWin 2000 PC operating software. Optionally with telealarm function.

Input

Measured variable Temperature (temperature-linear transmission behaviour)

TTR31, TTR35

Measuring range

Designation Measuring range limits Min. span

Pt100 as per IEC 60751 -50 to +150 °C (-58 to +302 °F)

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

• Sensor current:  0.6 mA

20 K (36 °F)

Output

Output signal DC voltage version: (short-circuit proof version)

• 1x PNP switch output

• 2x PNP switch outputs

• 2x PNP switch outputs or one PNP switch output and 4 to 20 mA output (active)

Signal on alarm •Analog output:  3.6 mA or  21.0 mA adjustable (if setting  21.0 mA the output is  21.5 mA)

• Switch outputs: at safety condition (switch open)

Load Max. (V

Range of adjustment • Switch output:

• Analog output (if available):

• Damping: can be set anywhere between 0...40 s in increments of 0.1 s

•Unit: °C, °F, K

power supply

Switch point (SP) and Switch-back point (RSP) in increments of 0.1 °C (0.18 °F) Min. distance between SP and RSP: 0.5 °C (0.8 °F)

Lower range value (LRV) and upper range value (URV) can be set anywhere within the sensor range (min. measuring range 20 K (36 °F))

- 6.5 V) / 0.022 A (current output)

Switching capacity DC voltage version:

• Switch status ON: I

• Switching cycles: > 10,000,000

• Voltage drop PNP:  2 V

• Overload protection: Automatic testing of switching current; output is switched off in case of overcurrent, the switching current is tested again every 0.5 s; max. capacitance load: 14 F for max. supply voltage (without resistive load) Periodic disconnection from a protective circuit in event of overcurrent (f = 2 Hz) and indication of ’Warning’

Inductive load To prevent electrical interference, only operate an inductive load (relays, contactors, solenoid valves)

when directly connected to a protective circuit (free-wheeling diode or capacitor).

 250 mA, switch status OFF: Ia  1 mA

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TTR31, TTR35

M16x1.5 / NPT ½”

M12x1

4...20mA

L–

L–L–

L–

L+

L+L+

L+

A2 A2’

A4 A4’

Power supply

Electrical connection Plug connection

TTR35: Electrical cables must comply with 3-A standard, must be smooth, corrosion resistant and cleanable.

A: M12x1 connector B: M16x1.5 or NPT ½" valve plug

A0023196

Device connection

• DC voltage version with M12x1 connector

Pos.-No. Output setting Order code (see chap. ordering information   15)

A1 1x PNP switch output TTR3x-A1A*******

A2 2x PNP switch output R1 and  (R2) TTR3x-A1B*******

A2’ 2x PNP switch output R1 and 

(diagnosis/break contact with adjustment "DESINA")

A3 1x PNP switch output and 1x analog

output (4 to 20 mA)

A4 1x analog output (4 to 20 mA) and

A4’ 1x analog output (4 to 20 mA) and

1x PNP switch output  (R2)

1x PNP switch output  (diagnosis/ break contact with adjustment "DESINA")

A0023243

TTR3x-A1B*******

TTR3x-A1C*******

• DC voltage version with M16x1.5 or NPT ½" valve plug

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Pos.-No. Output setting Order code (see chap. ordering information   15)

L–

L+

B 1x PNP switch output TTR3x-A2A*******; TTR3x-A3A*******

Supply voltage • DC voltage version

12 to 30 V DC (reverse polarity protection)

Current consumption without load < 60 mA, with reverse polarity protection

TTR31, TTR35

A0023449

Power supply failure • Behaviour in case of overvoltage (> 30 V)

The device works continuously up to 34 V DC without any damage. No damage is caused to the device in case of a short-term overvoltage up to 1 kV (as per EN 61000-4-5). The specific properties are no longer guaranteed if the supply voltage is exceeded

• Behaviour in case of undervoltage If the supply voltage drops below the minimum value, the device switches off (status as if not supplied with power = switch open).

Performance characteristics

The percentage information in the “Performance characteristics” section refers to the sensor nominal value.

Reference operating conditions

Maximum measured error switch point and display

As per DIN IEC 60770 or DIN IEC 61003 T = 25 °C (77 °F), relative humidity 45 to 75%, ambient air pressure 860 to 1060 kPa (12.47 to

15.37 PSI)

Supply voltage U = 24 V DC

Electronics

± 0.2 K (0.36 °F)

Sensor

• Tolerance class A as per IEC 60751, -50 to +200 °C (-58 to +392 °F)

• Maximum measured error in °C = ± 0.15 + 0.002 ×

T| = Process temperature in °C without taking sign into account.

|T|

Total error

Total error = electronics error + sensor error, e.g. for process temperatures:

• -50 to +75 °C (-58 to +167 °F)  0.5 K (0.9 °F)

• +75 to +200 °C (+167 to +392 °F)  0.75 K (1.35 °F)

Non-repeatability

0.1 K (0.18 °F) as per EN 61298-2 (without ambient temperature influence)

switch point

Long-term drift  0.1 K (0.18 °F) per year under reference operating conditions

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