A range of DewPro Moisture Transmitters from Panametrics are available from HMA Instrumentation. The MMR101 High-Temperature Moisture Transmitter is a high-temperature, loop-powered moisture and temperature transmitter. The MMR30 Moisture is a compact, mid-range moisture transmitter designed specifically for refrigeration dryer manufacturers and users. The MMR30 measures dewpoint at line pressure or atmospheric pressure, and installs easily on a dryer outlet header. The MMR31 loop-powered moisture transmitter represents a simple, cost-effective solution for mid-range moisture measurements.