omnigrad MTR 44, TR 45
Hauser
3
Electronics
The required type of output signal can be obtained by choosing the right head-mounted transmitter.
E Hauser supplies state-of-the-art transmitters (iTEMP
®
series) built in 2-wire technology and with
4…20 mA, HART
®
or PROFIBUS-PA
®
output signal. All the transmitters are easily programmable with a per-
sonal computer through the ReadWin
®
2000 public domain software (for 4…20 mA and HART
®
transmitters)
or CommuWin II software (for PROFIBUS-PA
®
transmitters).
HART
®
transmitters can be programmed also with the DXR 275 (Universal HART
®
Communicator) hand-held
operating module.
A PCP (4…20 mA) model (TMT 180) with enhanced accuracy is available and is particularly suita-
ble for hygienic applications.
E+H recommends the use of PROFIBUS dedicated connectors in the case of PROFIBUS-PA
®
transmitters. The
Weidmüller type (Pg 13.5 - M12) is provided as standard option.
For detailed information regarding transmitters, please refer to the relevant documentation (see TI codes at the
end of this document).
If a head-mounted transmitter is not employed, the sensor probe can be connected through the terminal block
to a remote converter (i.e. DIN rail transmitter).
Performance
Operating conditions
Ambient temperature (housing without head-mounted transmitter):
• metal housings
-40÷130°C
• plastic housings
-40÷85°C
Ambient temperature (housing with head-mounted transmitter)
-40÷85°C
Ambient temperature (housing with display)
-20÷70°C
Process temperature
The measurement range (see below) can be limited due to the the gasket employed in the process connection.
Maximum process pressure:
• TR 44, TR 45
5 MPa (50 bar) at 20°C
• TR 44, TR 45
3.3 MPa (33 bar) at 250°C
• TR 45
2.4 MPa (24 bar) at 400°C
Lower maximum pressures can be due to the process connection (i.e. clamp, …).
Maximum flow velocity
The highest flow velocity tolerated by the sensor stem diminishes with increasing lengths of the well/probe
exposed to the stream of fluid.
Shock and vibration resistance
According to DIN EN 60751
3 g peak / 10÷500 Hz
Accuracy
Probe maximum error
• cl. A
3
σ
= 0.15+0.0020ItI
-50…250°C
3
σ
= 0.30+0.0050ItI
250…400°C
• cl. 1/3 DIN B
3
σ
= 0.10+0.0017ItI
0…100°C
3
σ
= 0.15+0.0020ItI
-50...0 / 100...250°C
3
σ
= 0.30+0.0050ItI
250…400°C
(ItI = absolute value of temperature in °C)
Transmitter maximum error
See relevant documentation (codes at the end of this document)
Display maximum error
0.1% of the set span + 1 digit
The "4 wires" configuration ensures no additional errors in case of long connecting cables (without head-
mounted transmitter). Generally speaking, there is a higher guarantee of accuracy in the
"4 wires" configuration.
Measurement range
• TR 44
-50…250°C
• TR 45
-50…400°C
