Product category:
Temperature measurement: Conventional
News Release from: Labfacility | Subject: Labfacility 300TXLP
Edited by the Processingtalk Editorial
Team on 19 February 2008
Low-cost, low profile temperature
transmitter
The Labfacility 300TXLP is a compact, low-profile, 4-20mA temperature transmitter with an overall height of only 23mm, suitable for use in a low profile enclosures or a DIN block terminal head
There is a choice of ranges for Pt100 and thermocouple types J,K,N,T,R and S A key feature of the transmitter is the minimal-interaction span and zero calibration potentiometer action which is time saving and convenient when scaling or offsetting; an exceptionally wide range of adjustment is provided by the potentiometers to allow for easy re-calibration of the 4-20mA temperature range
This article was originally published on Processingtalk on 25 Feb 2004 at 8.00am (UK)
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For example, a type K thermocouple which has a working temperature range of 0 to 1100C can be easily calibrated to operate between 0 to 600C, where 4mA and 20mA represent 0 and 600C respectively.
The 4-20mA loop powered transmitter provides an accuracy of +/-0.2% of span for thermocouples type J,K and N and +/-0.1% for Pt100 sensors.
The output is directly proportional to the mV input signal for thermocouples and to the temperature input for Pt100 sensors.
The key benefit of using a 4-20mA interface between the sensor and the host measuring instrument is that long cable runs will not reduce the measurement accuracy.
Compared with using thermocouple extension cables instead, there are significant cable cost savings since the 4-20mA loop requires only low-cost copper cable.
For multi-sensor installations, especially those using different sensor types, 4-20mA loops allow the use of standardized process indicators which can be simply configured to the appropriate temperature ranges e.g 4-20mA corresponds to 0 to 1100C for a type K sensor.
The 300TXLP is CE and RoHS compliant and is guaranteed for 2 years.
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