The temperature transmitter that fits your sanitary process
Temperature Transmitter
Application
 The Alfa Laval temperature transmitter is designed to fulfill the demands in Sanitary and pharmaceutical production
Main features are:
Wetted parts in AISI316L, stainless steel
Compact, and hygienic design (3A / FDA and EHEDG compliant)
Measuring range: -20 to 150 °C
Sensor element: PT100 sensor with 4 wire connection to transmitter
Built-in transmitter with 4-20 mA output
High accuracy
Standard range
The Alfa Laval temperature transmitter features as standard a stainless steel field housing in excellent finish, suitable for sanitary applications. All process connections are as standard hygienic connections with high cleanability and bacteria tightness, as an option wetted parts can be electropolished down to Ra>0.4μ.
The design of the sensor tip ensures low response times and accurate measurements. The output can be supplied either as a standard 4...20 mA, 4...20 mA/HART® output or Profi bus® PA interface.
Working principle
The Alfa Laval temperature transmitter relies on a fast response Pt100 sensor tip. The sensor element is as standard a DIN A sensor element which is connected with 4 wires to the build in transmitter.
This ensures full resistance compensation and enables reliable and accurate measurements of process temperatures with a standard analogue output of 4-20 mA
Technical data
Measuring ranges:
0 to 150°C
-10 to 100 °C
-20 to 150 °C
Resolution: . . . . . . . . . . . . . . . . . . .12 bit
Accuracy
Pt 100 element: . . . . . . . . . . . . . . . .±(0.15+0.002 * t) [°C ]
Transmitter accuracy input : . . . . . . . .0.1% of span
Transmitter accuracy output : . . . . . . .0.1 °C
Mechanical data
Process connections:
Clamp DN 38 (ISO2852) / Clamp DN 40 (DIN32676)
Clamp DN 50 (ISO2852) / Clamp DN 51 (DIN32676)
Sensor length: . . . . . . . . . . . . . . . . .from50mmto 300mm
Materials
Wetted parts: . . . . . . . . . . . . . . . . .AISI 316
Fieldhouse: . . . . . . . . . . . . . . . . . . .AISI 304
Operating temperature
Wetted parts: . . . . . . . . . . . . . . . . .-50 to 250°C
Ambient temperature: . . . . . . . . . . . .-20 to 85 °C
Protection class : . . . . . . . . . . . . . . .IP 67
Maxmedia pressure: . . . . . . . . . . . . .16 bar
Weight
sensor: . . . . . . . . . . . . . . . . . . . . . .approx 500 gr.
Certificates
CE marked
3A (option)
3.1B certificate (option)
Calibration certificate, 5 point calibration (option)
Electrical data
The integrated 4 to 20 mA loop powered transmitter features as standard galvanic isolation between input and output.
Power supply: . . . . . . . . . . . . . . . . .6.5 to 36 Vdc
Output: . . . . . . . . . . . . . . . . . . . . .4-20 mA, 2 wire Profibus DP 4-20 mA HART, 2 wire
Connection: . . . . . . . . . . . . . . . . . .M12 plug or M16 cable gland
Response time (measured in water):
Sensor tip ¸6mm . . . . . . . . . . . . . . .3.0 sec.
Sensor tip ¸4mm . . . . . . . . . . . . . . .2.5 sec.
Sensor tip ¸3mm . . . . . . . . . . . . . . .1.3 sec.
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