Endress+Hauser S TMT162R Specifications
Technical Information
Omnigrad S TMT162R
RTD assembly
®
with HART
or PROFIBUS
-, FOUNDATION Fieldbus™-
®
PA field transmitter
Application
• Chemical/pharmaceutical industry
• Petrochemical industry
• Energy industry
• Paper industry
• General industrial applications
The TMT162R RTD assembly comprises a measuring
insert (Pt100) and an electronic field transmitter with
®
, FOUNDATION Fieldbus™ or PROFIBUS® PA
HART
protocol.
Features and benefits
• Dual compartment housing
• Backlit display with large measured value, bargraph
and fault condition indication
• Galvanic isolation 2 kV (sensor input to the output)
• Wide range of threaded thermowell connections available as standard, additional connections available on
request
• Replaceable measuring insert comprising a mineralinsulated tube (SS 316L/1.4404)
• Pt100 measuring resistor with accuracy class A
(IEC 60751) or 1/3 DIN B to maximize the measuring
range: -200 to +600 °C (-328 to 1112 °F)
• Aluminum or stainless steel housing,
degree of protection IP67, NEMA 4x
• Approvals for hazardous areas:
Flameproof enclosure (Ex d)
Intrinsic safety (Ex ia)
Non-sparking (Ex nA)
• Optional: 2 x Pt100 (3-wire), e.g. for redundant applications or differential measurement
• Optional factory calibration
TI266t/02/en
71093902
TMT162R
Function and system design
Measuring principle The resistance temperature detector (RTD) element has an electrical resistance with a value of 100 Ω at 0 °C
(32 °F). It is commonly known as Pt100 and complies with IEC 60751. This resistance value increases at higher
temperatures according to the characteristics of the sensor material (platinum). These kinds of sensors are
called Positive Temperature Coefficient elements (PTC). The coefficient is fixed with α = 0.00385 °C
lated between 0 and 100 °C (32 and 212 °F), according to ITS90 (International Temperature Scale).
Measuring system
-1
, calcu-
TMT162R
The TMT162R RTD assembly comprises a measuring insert with a Pt100 sensor element and the iTEMP®
TMT162 field transmitter which can be configured using the HART®, FOUNDATION Fieldbus™ or PROFIBUS® PA protocol. A thermowell can be ordered separately.
The Pt100 sensor element complies with IEC 60751 and withstands loads that typically occur in the most common industrial processes. The wire wound (WW) version of the sensor is supplied and is located in the tip of
the measuring insert. The measuring insert is a replaceable unit and is installed in a thermowell.
A spring system presses the measuring insert against the base of the thermowell to improve the transmission
of heat.
The transmitter housing is made of die-cast aluminum or stainless steel. It can be purchased with or without
an LC display. The minimum degree of protection, IP65, is achieved by sealing glands at the cable entry and
the thermometer connection. Depending on the customer's requirements, customers can choose from thermowells constructed from welded tubes and thermowells made of drilled barstock material. The thermowells
are available in various shapes and sizes and with a wide range of process connections (thread, flange or weldon connections, see page 12).
Measurement range -200... 600 °C (-328...1112 °F) according to IEC 60751
Performance characteristics
Operating conditions Ambient temperature limits
• Without display: -40 to +85 °C (-40 to 185 °F)
• With display: -40 to +80 °C (-40 to 176 °F)
TMT162R_G_dd_07_xx_04
For use in Ex area, see Ex certificate.
!
Storage temperature • Without display: -40 to +100 °C (-40 to 212 °F)
2 Endress+Hauser
Note!
At temperatures < -20 °C (-4 °F), the display may react slowly. Readability of the display cannot be guaranteed
at temperatures < -30 °C (-22 °F).
• With display: -40 to +80 °C (-40 to 176 °F)
Process pressure/flow velocity
The load limits of the thermometer depend on the thermowell used and are listed in the technical information
specific to the individual thermowells (see page 12). Factors that affect the load limits include the process pressure, flow velocity, density of the medium, temperature, immersion depth, length of the thermowell in the
flowing medium etc. In critical situations, a load capacity calculation for the thermowell can be ordered from
Endress+Hauser.
Shock and vibration resistance
3 g (max. value)/ 10 to 500 Hz as per IEC 60 068-2-6
Accuracy RTD corresponding to IEC 60751
Class max. Tolerances
RTD max. error type WW - range: -200 to +600 °C
W0.15 (Cl. A) 0.15 ± 0.002 · |t|
W0.1 (Cl. AA
former
1/3 Cl. B)
W0.3 (Cl. B) 0.3 ± 0.005 · |t|
(°C)
0.10 ± 0.0017 · |t|
Temperature range Characteristics
1)
-200 °C to +600 °C
1)
0 °C to +250 °C
1)
-200 °C to +600 °C
TMT162R
a0008588-en
1. |t| = absolute value °C
Note!
!
For measurement errors in °F, calculate using equations above in °C, then multiply the outcome by 1.8.
The 4-wire technology is the optimum connection method for RTDs. Here, the measurement is effected by
means of a measuring and supply circuit, making it completely independent of the properties of the cable.
When using Pt100 sensors, Class A or 1/3DIN B, it is always presumed that 4-wire measurement is carried
out in accordance with IEC 60751 since the best measuring results can be obtained in practice in this way.
Response time Tests in water at 0.4 m/s (1.3 ft/s), according to IEC 60751; 10 K temperature step changes; response time
for the assembly without thermowell and transmitter:
: 3.5 s
•t
50
•t
: 8 s
90
Insulation resistance Insulation resistance ≥100 MΩ at ambient temperature.
Insulation resistance between each terminal and the sheath is tested with a voltage of 250 V DC.
Endress+Hauser 3
TMT162R
Transmitter specifications
Measurement accuracy 0.1 °C (0.18 °F)
Sensor current ≤ 0.3 mA
Galvanic isolation
(input/output)
1. % relates to the set span. Accuracy = digital + D/A accuracy, for 4 to 20 mA output
Self heating Negligibly small
Material
Housing Nameplate Neck, insert
Die-cast aluminum housing AlSi10Mg
with powder coating on polyester basis
Stainless steel 1.4435 (AISI 316L) 1.4301 (AISI 304)
TMT162 FF/PA TMT162 HART
Accuracy
Digital D/A
0.1 °C (0.18 °F) 0.02%
U = 2 kV AC
Aluminum AlMgl, anodized in black Stainless steel 1.4404 (AISI 316L)
®
1
Installation conditions
Orientation No restrictions.
Electromagnetic compatibility (EMC)
CE Electromagnetic Compatibility Compliance
EMC meets all relevant requirements listed under EN 61326 Series and NAMUR NE21. Details as per declaration of conformity.
This recommendation is a uniform and practical way of determining whether the devices used in laboratories
and process control are immune to interference with an objective to increase its functional safety.
ESD (Electrostatic discharge) IEC 61000-4-2 6 kV cont., 8 kV air
Electromagnetic fields IEC 61000-4-3 0.08 to 2 GHz
Burst (fast transient) IEC 61000-4-4 1 kV (2 kV for HART)
surge IEC 61000-4-5 1 kV asym. (0.5 kV sym. for HART)
Conducted RF IEC 61000-4-6 0.01 to 80 MHz 10 V
(0.08 to 4 GHz for FF)
0.08 to 2 GHz for HART
2 to 2.7 GHz
10 V/m
10 V/m
30 V/m
1V/m
4 Endress+Hauser
Loading...