Monitran has introduced the MTN/2285STC, a combined velocity and temperature sensor with 4-20 mA range outputs for industrial monitoring applications. A dual-output sensor, it 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 outputs are suitable for direct connection to a PLC, DCS or other industrial controller.
Monitran managing director, Andy Anthony, comments: “Changes in vibration or temperature levels tend to provide the earliest indication that a piece of equipment is in need of maintenance, and in some cases warrants 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 5 m of integral stainless steel over-braded 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.
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, to be specified when ordering. The temperature operating range is -25 to 90°C.
Anthony concludes: “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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