Metrix has launched the next generation of its IT6810 impact transmitter, designed to protect machines with higher amplitude to inherent vibration, running at 900 rpm or higher.

The Model IT6810 impact transmitter uses a new technique to measure machinery.  Impact has been used successfully to measure mechanical looseness on large reciprocating compressors for several years.  This new Impact Transmitter combines this measurement with 4-20 mA loop-powered sensor technology.

The transmitter has a built-in piezoelectric crystal sensing element, and uses a timing function as part of its severity determination.  An impact event counter and memory device is used to record events meeting a pre-set amplitude threshold level.

The output of the IT6810 impact transmitter is a 4-20 mA signal proportional to the number of impact events over the threshold in a set time period.  The relationship between the mA signal and the number of impact events remains the same.  The timeframe over which the events are measured can be changed.  This will allow customers to match the measuring timeframe with the rpm range of their equipment, the company said.

Mechanical impacts are both measured and qualified within the transmitter.  The result is a current output proportional to impact severity, according to Metrix. 

The impact transmitter detects loose rod nuts, cracked rods, broken or loose bolts, liquids in the process, loose or worn wrist pins, excessive clearance in the slipper, or other loose or broken parts, thus protecting reciprocating compressors, preventing damage and maximizing uptime. 

For more details on the operation of the Impact sensor click on the technical paper below:

Impact Measurement for Reciprocating Compressors Technical Paper 

Visit METRIX Instrument web site for more information.