Instrotech has launched Monitran’s MTN/2285STC, a combined velocity and temperature sensor with 4-20 mA range outputs for industrial monitoring applications. This dual-output sensor is ideal for monitoring vibration and temperature levels in the same location and for protecting motors, fans, pumps, compressors and other assemblies with rotating parts. Both of the sensor’s outputs are in the industry standard range 4-20 mA and are suitable for direct connection to a PLC, DCS or other industrial controller.
Managing director of Monitran, Andy Anthony comments: “Changes in vibration or temperature levels tend to provide the earliest indication that a piece of plant or equipment is in need of maintenance and in some cases warrant shutting down to avoid damage. With our new dual-output sensor, engineers can connect directly to any equipment that accepts inputs in the 4-20 mA range in order to monitor both parameters for maintenance, control or emergency shutdown purposes.”
The MTN/2285STC is a stainless steel side-entry transducer, sealed to IP65 and supplied with five metres of integral stainless steel overbraided ETFE cable as standard, with other lengths available upon request. Its dynamic range is 50 g peak and it has a frequency range of 16 to 720 Hz ±10%.
The sensor requires a DC supply voltage in the range 12 to 32 V. Its vibration output is proportional to RMS velocity, with a range of 0 to 10, 20, 25, 50 or 100 mm/s. The sensor’s temperature output sensitivity is 0,106 mA/°C across its operating temperature range of -25 to 90°C, and it has an accuracy of 0,08%/°C.
Anthony adds: “Most velocity sensors that also measure temperature usually do so because of the addition of an AC output, that is they produce a voltage proportional to acceleration or velocity. It is therefore often necessary to convert the voltage into a current in the range 4-20 mA in order to connect to monitoring or control equipment. With the introduction of this new sensor, the need for the conversion step is negated.”
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