Page 1
TI00087R/09/EN/13.13
71227143
Products Solutions Services
Technical Information
iTEMP® TMT121
Temperature transmitter, PC programmable,
for installation on DIN rail according to IEC 60715
Universal input for RTD, thermocouple (TC),
resistance and voltage transmitters
Application
• PC programmable (PCP) temperature transmitter for converting
various input signals into an scalable 4 to 20 mA analog output signal
• Universal input for resistance thermometer (RTD), thermocouple (TC),
resistance transmitter (Ω) and voltage transmitter (mV)
• Online configuration using PC with configuration kit
(PC-software ReadWin® 2000 and USB-interface connection)
• DIN rail mounting according to IEC 60715
Your benefits
• Universally PC programmable for various input signals
• 2-wire technology, 4 to 20 mA analog output
• High accuracy in total ambient temperature range
• Fault signal on sensor break or short circuit, presettable to NAMUR NE 43
•EMC to NAMUR NE 21, CE
• UL recognized component to UL 3111-1
• Safe operation in hazardous areas
International approvals such as ATEX Ex ia, NEPSI, FM IS, CSA IS
• Ship building approval GL
• Galvanic isolation
• Output simulation
• Customer-specific linearization, linearization curve match
• Online configuration during measurement
Page 2
TMT121
Function and system design
Measuring principle Electronic recording and conversion of various input signals in industrial temperature measurement.
Measuring system The iTEMP® TMT 121 DIN rail temperature transmitter is a 2-wire transmitter with an analog output.
It has measurement input for resistance thermometers (RTD) and resistance transmitters in 2-, 3- or
4-wire connection, thermocouples and voltage transmitters. The TMT 121 is set up using a
configuration kit (see accessories, → ä 8) and the free of charge setup software ReadWin® 2000.
Input
Measured variable Temperature (temperature-linear transmission behavior), resistance and voltage.
Measuring range Dependent on the sensor connection and input signal the transmitter evaluates a number of
different measurement ranges, see ’type of input’.
Type of input
Type of input Designation Measuring range limits Min. span
Resistance thermometer (RTD)
as per IEC 60751
as per DIN 43760
Resistance
transmitter
Thermocouple (TC)
as per IEC 584, part 1
Pt100
Pt500
Pt1000
Ni100
Ni120
Ni500
Ni1000
• Type of connection: 2-wire, 3-wire or 4-wire connection,
sensor current: ≤ 0.6 mA
• With 2-wire circuit, compensation of wire resistance possible (0 to 20 Ω)
• With 3-wire and 4-wire connection, sensor wire resistance up to max. 40 Ω per
wire
Resistance Ω 10 ... 400 Ω
Type B (PtRh30-PtRh6)
Type E (NiCr-CuNi)
Type J (Fe-CuNi)
Type K (NiCr-Ni)
Type N (NiCrSi-NiSi)
Type R (PtRh13-Pt)
Type S (PtRh10-Pt)
Type T (Cu-CuNi)
-200...+850 °C (-328...+1562 °F)
-200...+250 °C (-328...+482 °F)
-200...+250 °C (-328...+482 °F)
-60...+180 °C (-76...+356 °F)
-70...+270 °C (-94...+518 °F)
-60...+150 °C (-76...+302 °F)
-60...+150 °C (-76...+302 °F)
10 ... 2000 Ω
0...+1820 °C (+32...+3308 °F)
-200...+915 °C (-328...+1679 °F)
-200...+1200 °C (-328...+2192 °F)
-200...+1372 °C (-328...+2372 °F)
-270...+1300 °C (-454...+2372 °F)
0...+1768 °C (+32...+3214 °F)
0...+1768 °C (+32...+3214 °F)
-200...+400 °C (-328...+752 °F)
10 K
10 K
10 Ω
100 Ω
500 K
50 K
50 K
50 K
50 K
50 K
50 K
50 K
as per ASTM E988
as per DIN 43710
Voltage transmitter
(mV)
Type C (W5Re-W26Re)
Type D (W3Re-W25Re)
Type L (Fe-CuNi)
Type U (Cu-CuNi)
• Internal cold junction (Pt100)
• External cold junction: configurable value 0 to +85 °C (+32 to +185 °F)
• Cold junction accuracy: ± 1 K
• Sensor current = typ. 100 nA
Millivolt transmitter
(mV)
0...+2320 °C (+32...+4208 °F)
0...+2495 °C (+32...+4523 °F)
-200...+900 °C (-328...+1652 °F)
-200...+600 °C (-328...+1112 °F)
-10 ... 100 mV 5 mV
500 K
500 K
50 K
50 K
2 Endress+Hauser
Page 3
TMT121
ENDRESS+HAUSER
TMT121
3
5
6
RTD
3
5
6
W
3
3
4
4
5
5
6
6
RTD W
3
6
3
6
RTD W
4
6
TC
6 5 4 3
+ -
2-wire 3-wire 4-wire
SETUP
socket
Removable
wiring plug
Removable
wiring plug
12 to 35 V
12 to 30 V Ex
4 to 20 mA
Output
Output signal Analog 4 to 20 mA, 20 to 4 mA
Signal on alarm • Measurement range undercut: Linear drop to 3.8 mA
• Exceeding measurement range: Linear rise to 20.5 mA
• Sensor breakage; Sensor short circuit1): ≤ 3.6 mA or ≥ 21.0 mA
Load Maximum load = (V
Linearization/ transmission
Temperature-linear, resistance-linear, voltage-linear
Power supply
behavior
Filter Digital filter 1. degree: 0 to 8 s
Galvanic isolation U = 2 kV AC (Input/output)
Intrinsinc current
≤ 3.5 mA
consumption
Current limit ≤ 23 mA
Switch-on delay 4 s (during power up I
= 3.8 mA)
a
Power supply
Electrical connection
- 12 V) / 0.022 A (current output)
A0020932-EN
Assignment of terminal connections
RTD sensor connection
Type of connection:
Terminal:636536534
Color: Red White Red Red White Red Red White White
2-wire 3-wire 4-wire
Supply voltage Ub= 12 to 35 V, protected against polarity reversal
1) Not valid for thermocouple
Endress+Hauser 3
Page 4
TMT121
Residual ripple Allowable ripple: Uss ≤ 3 V at Ub ≥ 15 V, f
Performance characteristics
Response time 1 s
Reference operating conditions
Maximum measured error
• Calibration temperature: +25 °C ± 5 K (77 °F ± 9 °F)
• Supply voltage: 24 V DC
• 4-wire circuit for resistance adjustment
The accuracy data are typical values and correspond to a standard deviation of ± 3σ (normal
distribution), i.e. 99.8% of all the measured values achieve the given values or better values.
Designation Performance characteristics
Pt100, Ni100, Ni120
Resistance thermometers (RTD)
Thermocouples (TC)
Resistance transmitters (Ω) 10 to 400 Ω
Voltage transmitters (mV) -10 to 100 mV ± 20 μV or 0.08%
Pt500, Ni500
Pt1000, Ni1000
Typ: K, J, T, E, L, U
Typ: N, C, D
Typ: S, B, R
Measuring range Performance characteristics
10 to 2000 Ω
max.
= 1 kHz
1)
0.2 K or 0.08%
0.5 K or 0.20%
0.3 K or 0.12%
typ. 0.5 K or 0.08%
typ. 1.0 K or 0.08%
typ. 2.0 K or 0.08%
± 0.1 Ω or 0.08%
± 1.5 Ω or 0.12%
1) % is related to the adjusted measurement range (the value to be applied is the greater).
Influence of power supply ≤ ± 0.01%/V deviation from 24 V in reference operating conditions
Long-term stability ≤ 0.1 °C/year (≤ 0.18 °F/year) in reference operating conditions
Influence of ambient tempe-
Total temperature drift = input temperature drift + output temperature drift
rature (temperature drift)
Impact on accuracy when ambient temperature changes by 1 K (1.8 °F):
Input 10 to 400 Ω typ. 0.001% of the measured value, min. 1 mΩ
Input 10 to 2000 Ω typ. 0.001% of the measured value, min. 10 mΩ
Input -10 to 100 mV typ. 0.001% of the measured value, min. 0.2 μV
Output 4 to 20 mA typ. 0.0015% of the measuring span
Typical sensitivity of resistance thermometers
Pt: 0.00385 * R
Example Pt100: 0.00385 x 100 Ω/K = 0.385 Ω/K
/K Ni: 0.00617 * R
nom
nom
/K
4 Endress+Hauser
Page 5
TMT121
35 mm (1.38 in)
IEC 60715
Typical sensitivity of thermocouples
B: 9 μV/K at
1000 °C (1832 °F)
L: 60 μV/K at
500 °C (932 °F)
C: 18 μV/K at
1000 °C (1832 °F)
N: 38 μV/K at
500 °C (932 °F)
D: 20 μV/K at
1000 °C (1832 °F)
R: 13 μV/K at
1000 °C (1832 °F)
E: 81 μV/K at
500 °C (932 °F)
S: 11 μV/K at
1000 °C (1832 °F)
Example of calculating the measured error with ambient temperature drift:
• Input temperature drift ϑ = 10 K (18 °F), Pt100, Measuring range 0 to 100 °C (32 to 212 °F)
• Maximum process temperature: 100 °C (212 °F)
• Measured resistance value: 138.5 Ω (DIN EN 60751) at maximum process temperature
Typical temperature drift in Ω: (0.001% of 138.5 Ω) * 10 = 0.01385 Ω
Conversion to Kelvin: 0.01385 Ω / 0.385 Ω/K = 0.04 K (0.054 °F)
Influence of load ± 0.02%/100 Ω, related to the adjusted measurement range
Influence of cold junction Pt100 DIN EN 60751 Kl. B, internal cold junction with thermocouples TC
J: 56 μV/K at
500 °C (932 °F)
T: 46 μV/K at
100 °C (212 °F)
K: 43 μV/K at
500 °C (932 °F)
U: 70 μV/K at
500 °C (932 °F)
Installation conditions
Installation instructions • Mounting location:
Installation on DIN rail - follow sequence 1 and 2
• Orientation:
No restrictions
A0020674
Environmental conditions
Ambient temperature -40 to +85 °C (-40 to +185 °F), for hazardous areas see Ex documentation (XA, CD) and section
’Certificates and approvals’ → ä 7
Storage temperature -40 to +100 °C (-40 to +212 °F)
Altitude Up to 4000 m (4374.5 yd) above mean sea level in accordance with IEC 61010-1, CSA 1010.1-92
Endress+Hauser 5
Page 6
Climate class According to EN 60654-1, Class C
ENDRESS+HAUSER
TMT 121
22.5 (0.89)
112 (4.41)
96 (3.78)
110 (4.33)
Humidity • Condensation as per IEC 60068-2-33 permitted
• Max. rel. humidity: 95% as per IEC 60068-2-30
Degree of protection IP 20 (NEMA Type 1 Encl.)
TMT121
Shock and vibration
4g / 2 to 150 Hz as per IEC 60 068-2-6
resistance
Electromagnetic compatibility (EMC)
CE EMC compliance
Interference immunity and interference emission according to IEC 61326 and NAMUR NE 21.
Mechanical construction
Design, dimensions Installation on DIN rail according to IEC 60715, TH35
Dimensions in mm (in)
Weight Approx. 90 g (3.17 oz)
Material All materials used are RoHS-compliant.
Housing: Plastic PC/ABS, UL 94V0
Terminals Keyed plug-in screw terminals, core size max. 2.5 mm² (16 AWG) solid, or strands with ferrules
Human interface
Display elements A yellow illuminated LED signalizes: Device is operational.
Operating elements No operating elements are available on the temperature transmitter. The temperature transmitter will
be configured by remote operation with the PC software ReadWin® 2000.
Remote operation Online configuration via PC with configuration kit (PC-Software ReadWin® 2000 and USB interface
cable), see ’Acessories’, → ä 8
A0020675
6 Endress+Hauser
Page 7
TMT121
Menu Configurable parameters
Standard settings • Selection sensor type
• Connection (2-, 3- or 4-wire connection)
• Selection unit: °C, °F
• Measurement range limits (depends on selected sensor type)
Expanded settings • Cold junction compensation internal/external (only on TC connection)
• Temperature external (only on TC connection)
• Compensation resistance (0 to 20 Ω on RTD 2-wire connection)
• Fault condition reaction: ≤ 3.6 mA or ≥ 21.0 mA, for
configuration ≥ 21.0 mA an output current ≥ 21.5 mA is guaranteed
• Analog output: 4 to 20 mA (standard) or 20 to 4 mA (inverse)
• Filter, optional from 0 to 8 s
• Zero point, offset: -9.9 to +9.9 K (-18 to +18 °F)
• TAG (Measurement point description)
Service functions • Simulation analog output: on/off
• Password assignment
Certificates and approvals
CE-Mark The device meets the legal requirements of the EC directives. Endress+Hauser confirms that the device
has been successfully tested by applying the CE mark.
Hazardous area approvals ATEX approval
TMT121 ATEX II 2(1)G Ex ia [ia Ga] IIC T4...T6 Gb
Power supply
(Terminals + and -)
Sensor circuit
(Terminals 3 to 6)
Maximum connection data Ex ia IIC
Ex ia IIB
Ex ia IIA
Temperature range T6
T5
T4
TMT121 ATEX II 3G Ex nA II T6/T5/T4
Power supply (Terminals + and -) U ≤ 35 V DC
Output 4...20 mA
Temperature range T6
T5
T4
≤ 30 V
U
i
DC
Ii ≤ 100 mA
≤ 750 mW
P
i
= negligibly small
C
i
L
= negligibly small
i
≤ 4.4 V DC
U
0
≤ 9.6 mA
I
0
P
≤ 10.6 mW
0
L
= 100 mH
0
= 100 mH
L
0
L
= 100 mH
0
Ta = -40 °C to +50 °C
Ta = -40 °C to +65 °C
Ta = -40 °C to +85 °C
Current consumption ≤ 23 mA
Ta = -40 °C to + 45 °C
Ta = -40 °C to + 55 °C
Ta = -40 °C to + 85 °C
C
= 2.4 μF
0
= 12 μF
C
0
C
= 18 μF
0
FM approval
Labeling:
IS / Class I / Division 1 / Groups ABCD / T4/T5/T6
Class I / Zone 0 / AEx ia IIC / T4/T5/T6
NI / Class I / Division 2 / Groups ABCD / T4/T5/T6
For connection data see table on ATEX approval ATEX II 2(1)G
Endress+Hauser 7
Page 8
TMT121
CSA approval (Canadian Standard Association)
Labeling:
INTRINSICALLY SAFE Class I / Div. 1 / Groups ABCD / T4/T5/T6
NONINCENDIVE, FIELD WIRING Class I / Div. 2 / Groups ABCD / T4/T5/T6
For connection data see table on ATEX approval ATEX II 2(1)G
For further details on the available Ex versions (ATEX, CSA, FM, etc.), please contact your nearest
Endress+Hauser sales organisation. All relevant data for hazardous areas can be found in separate Ex
documentation. If required, please request copies from us or your Endress+Hauser sales organisation.
Other standards and guidelines
• IEC 60529: Degrees of protection through housing (IP code)
• IEC 61326: Electromagnetic compatibility (EMC requirements)
• IEC 61010: Safety requirements for electrical measurement, control and laboratory instrumentation
• NAMUR: International user association of automation technology in process industries
UL Recognized component to UL3111-1
Ordering information
Detailed ordering information is available from the following sources:
• In the Product Configurator on the Endress+Hauser website:
www.endress.com → Select country → Instruments → Select device → Product page function:
Configure this product
• From your Endress+Hauser Sales Center:
www.endress.com/worldwide
Product Configurator - the tool for individual product configuration:
• Up-to-the-minute configuration data
• Depending on the device: Direct input of measuring point-specific information such as
measuring range or operating language
• Automatic verification of exclusion criteria
• Automatic creation of the order code and its breakdown in PDF or Excel output format
• Ability to order directly in the Endress+Hauser Online Shop
Accessories
Various accessories, which can be ordered with the device or subsequently from Endress+Hauser, are
available for the device. Detailed information on the order code in question is available from your
local Endress+Hauser sales center or on the product page of the Endress+Hauser website:
www.endress.com.
Optional accessories
Service-specific accessories
8 Endress+Hauser
Type Order code
Configuration kit: Setup-program ReadWin® 2000 and PC-interface
cable with 4-pin USB-plug
Accessories Description
Applicator Software for selecting and sizing Endress+Hauser measuring devices:
• Calculation of all the necessary data for identifying the optimum measuring
device: e.g. pressure loss, accuracy or process connections.
• Graphic illustration of the calculation results
Administration, documentation and access to all project-related data and
parameters over the entire life cycle of a project.
Applicator is available:
• Via the Internet: https://wapps.endress.com/applicator
• On CD-ROM for local PC installation.
TXU10-AA
Page 9
TMT121
Konfigurator
W@M Life cycle management for your plant
+temperature
Software for selecting and configuring the product depending on the measuring
task, supported by graphics. Includes a comprehensive knowledge database and
calculation tools:
• For temperature competence
• Quick and easy design and sizing of temperature measuring points
• Ideal measuring point design and sizing to suit the processes and needs of a
wide range of industries
The Konfigurator is available:
On request from your Endress+Hauser sales office on a CD-ROM for local PC
installation.
W@M supports you with a wide range of software applications over the entire
process: from planning and procurement, to the installation, commissioning and
operation of the measuring devices. All the relevant device information, such as
the device status, spare parts and device-specific documentation, is available for
every device over the entire life cycle.
The application already contains the data of your Endress+Hauser device.
Endress+Hauser also takes care of maintaining and updating the data records.
W@M is available:
• Via the Internet: www.endress.com/lifecyclemanagement
• On CD-ROM for local PC installation.
Documentation
• Operating instructions: KA00126R/09/c4
• Ex supplementary documentation:
ATEX II 2(1)G Ex ia IIC: XA013R/09/a3
ATEX II 3G Ex nA II: XA018R/09/a3
Endress+Hauser 9
Page 10
TMT121
www.addresses.endress.com
Loading...