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Technical Information
iTEMP® Pt100 TMT187
Temperature head transmitter
for Pt100 for installation in a sensor head form B
Application
• Temperature transmitter with fixed measuring range
for converting a Pt100 input signal into an analogue,
scalable 4 to 20 mA output signal
Features and benefits
• Fixed measuring range for Pt100
• Two-wire technology, 4 to 20 mA analogue output
• High accuracy in complete ambient temperature range
• Failure information when sensor breaks or shortcircuits as per NAMUR NE 43
• EMC as per NAMUR NE 21, CE
• Ex approval
ATEX Ex ia and dust in compliance with EN 50281-1,
CSA, FM
• Galvanic isolation
0 2 1 â Ó
TI076R/09/en
No. 51001791
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Function and system design
Measuring principle Electronic acquisition and conversion of input signals in industrial temperature measurement.
TMT187
Measuring system The iTEMP
measuring input for Pt100 in 2, 3, or 4-wire connection.
®
Pt100 TMT187 temperature head transmitter is a 2-wire transmitter with analogue output,
Input values
Measured variable Temperature
Measuring range Depending on the application, different measuring ranges can be ordered (see ’Product structure’).
Input type
Input Designation Measuring range limits Min. span
Resistance
thermometer
(RTD)
Pt100
as per IEC 751
• Type of connection: 2, 3 or 4-wire connection
• Cable resistance: sensor cable resistance of max. 11 Ω per cable
• Sensor current: ≤ 0.6 mA
-200 to 850 °C (-328 to 1562 °F) 10 K (18 °F)
Output values
Output signal Analogue 4 to 20 mA
Signal on alarm • Undershooting measuring range:
linear decrease to 3.8 mA
• Exceeding measuring range:
linear increase to 20.5 mA
• Sensor break; Sensor short-circuit:
≥ 21.0 mA (> 21.5 mA is guaranteed)
Load Max. (V
Linearisation/transmission behaviour
Galvanic isolation U = 2 kV AC (input/output)
Induced current requirement ≤ 3.5 mA
Current limitation ≤ 25 mA
Switch on delay 4 s (during switch on procedure I
Power supply
Temperature linear
- 8 V) / 0.025 A (current output)
= 3.8 mA)
a
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TMT187
Electrical connection
Power supply
Temperature transmitter terminal assignment
Supply voltage Ub= 8 to 35 V, reverse polarity protection
Residual ripple Permitted residual ripple U
≤ 5 V at Ub ≥ 13 V, f
ss
Accuracy
Response time 1 s
2
1
max.
8...35 V
8...30 V Ex
4...20 mA
2-wire 3-wire 4-wire
RTD
6
3
RTD
6
5
3
= 1 kHz
RTD
6
5
4
3
a0003211-en
Reference operating
Calibration temperature: +23 °C (73.4 °F) ± 5 K (9 °F)
conditions
Measuring error
Resistance
thermometer RTD
1) % refer to the set span. The highest value is valid.
Designation Accuracy
Pt100 0.2 K (0.36 °F) or 0.08%
Influence of supply voltage • ≤ ±0.01%/V deviation from 24 V
Percentages refer to the full scale value.
Influence of ambient temperature (temperature drift)
• Pt100 resistance thermometer:
T
= ±(15 ppm/K * (full scale value + 200) + 50 ppm/K * of set measuring range) * ∆ ϑ
d
∆ ϑ = deviation of ambient temperature from the reference operating condition.
Influence of load • ± 0.02%/100 Ω
Values refer to the full scale value
Long term stability • ≤ 0.1 K/year or ≤ 0.05%/year
Values under reference operating conditions. % refer to the set span. The highest value is valid.
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Installation conditions
Installation instructions Orientation:
No restrictions
Installation location:
Connection head accord. to DIN 43 729 Form B; TAF 10 field housing
Environmental conditions
Ambient temperature -40 to +85 °C (-40 to 185 °F) for Ex-area, see Ex-certification
Storage temperature -40 to +100 °C (-40 to 212 °F)
Climate class as per IEC 60 654-1, class C
TMT187
Ingress protection IP00/ IP66 installed
Shock and vibration resistance 4g / 2 to 150 Hz as per IEC 60 068-2-6
Electromagnetic compatibility (EMC)
Condensation allowable
Interference immunity and interference emission according to EN 61 326-1 (IEC 1326) and NAMUR NE 21
Mechanical construction
Design, dimensions
Æ5
33
Æ7
Æ44
22.5
a0003233-en
Values in mm (inches)
Weight approx. 40 g (1.41 oz)
Materials Housing: PC, Potting: PUR
Terminals Cable up to max. 1.75 mm
2
(16 AWG), secure screws
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TMT187
Display and operating system
Display elements There are no display elements available on the device.
Operating elements There are no operating elements available on the device.
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 For further details on the available Ex versions (ATEX, CSA, FM, etc.), please contact your nearest E+H sales
organisation. All relevant data for hazardous areas can be found in separate Ex documentation. If required,
please request copies from us or your E+H sales organisation.
Other standards and
guidelines
• IEC 60529:
Degree of protection provided by housing (IP-Code)
• IEC 61010:
Safety requirements for electrical measurement, control and laboratory use.
• IEC 1326:
Electromagnetic compatibility (EMC requirements)
•NAMUR
Standards working group for measurement and control technology in the chemical industry.
(www.namur.de)
UL recognized UL recognized component to UL 3111-1
GL approval GL Germanische Lloyd ship building approval
Ordering information
Product structure
iTEMP® Pt100 TMT187 head transmitter
for temperature measurement; Analogue output 4 to 20 mA, 2-wire techn.; Galv. isol., fail. mode to NAMUR NE 43; For mounting in Form
B head to DIN 43729; UL recognized, ship building approval GL
Approval:
A Version for non hazardous areas, UL recognized, ship building approval GL
B ATEX II1G EEx ia IIC T4/T5/T6
C FM IS, Class I, Div.1+2, Group A,B,C,D
D CSA IS, Class I, Div.1+2, Group A,B,C,D
E ATEX II3G EEx nA II T4/T5/T6
F ATEX II3D
G ATEX II1G EEx ia IIC T6, II3D
H ATEX II3G EEx nA IIC T6, II3D
I FM+CSA IS, NI, Class I, Div. 1-2, Group A, B, C, D
J CSA General Purpose
Fitting type:
2 RTD 2-wire
3 RTD 3-wire
4 RTD 4-wire
Temperature sensor:
1 Pt100 (-200 to 850 °C, -328 to 1562 °F, min. sp. 10 K, 18 °F)
TMT127- 1 ⇒ Order code (Part 1)
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Measuring range:
BA Range -50 to 100 °C (-58 to 212 °F)
BB Range -50 to 200 °C (-58 to 392 °F)
CA Range -40 to 60 °C (-40 to 140 °F)
DA Range -30 to 60 °C (-22 to 140 °F)
DB Range -30 to 150 °C (-22 to 302 °F)
DC Range -30 to 70 °C (-22 to 158 °F)
DD Range -30 to 170 °C (-22 to 338 °F)
DE Range -10 to 200 °C (14 to 392 °F)
EA Range -20 to 20 °C ( -4 to 68 °F)
EB Range -20 to 60 °C ( -4 to 140 °F)
EN Range -10 to 40 °C (14 to 104 °F)
FC Range 0 to 50 °C (32 to 122 °F)
FE Range 0 to 100 °C (32 to 212 °F)
FG Range 0 to 150 °C (32 to 302 °F)
FH Range 0 to 200 °C (32 to 392 °F)
FI Range 0 to 250 °C (32 to 482 °F)
FJ Range 0 to 300 °C (32 to 575 °F)
FK Range 0 to 400 °C (32 to 752 °F)
FL Range 0 to 500 °C (32 to 932 °F)
FO Range 0 to 160 °C (32 to 320 °F)
OA Range 40 to 90 °C (104 to 194 °F)
Additional option:
A Basic version
B Works calib. certif., 6 point
TMT187 1 ⇒ Order code (complete)
TMT187
International Head Quarter
Endress+Hauser
GmbH+Co. KG
Instruments International
Colmarer Str. 6
79576 Weil am Rhein
Deutschland
Tel. +49 76 21 9 75 02
Fax +49 76 21 9 75 34 5
www.endress.com
[email protected]
Accessories
No accessories are required for this device.
Documentation
!Brief operating manual “iTEMP® Pt100 & TC TMT187/188“ (KA120R/09/a3)
!Ex Supplementary documentation: ATEX Safety instructions
– II1G (XA004R/09/a3)
– II3G (XA010R/09/a3)
– II3D (XA026R/09/a3)
TI076R/09/en/02.05
51001791
FM+SGML6.0 ProMoDo
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