The Model DTM.OCS high-performance digital transmitter from PMC Engineering offers pressure and temperature measurement with data logging capabilities and RS485/Modbus RTU. It is suitable for monitoring level in tanks and wells in addition to many other pressure measurements within the water industry. Pressure ranges from 0 to 6 feet of water and 0 to 1,500 psi in either gauge or absolute. Operating temperature is minus 40 to 185 degrees F. Reliability is enhanced by a proof pressure of more than 300 percent full scale. The RS485/Modbus communication protocol allows for changing the zero point and measurement unit, re-ranging and product identification. It incorporates piezoresistive silicon technology with hysteresis and repeatability of less than 0.01 percent and a static accuracy of less than 0.03 percent. Total errors including zero/span settings and thermals combine for better than 0.05 percent full scale. 203/792-8686; www.pmc1.com.