738 Series Differential Pressure LiquiSealTM Purge Control Level Transmitter
Fully integrated air purge regulator that provides continuous level measurement. Integral differential pressure transmitter provides 4 mA to 20 mA output proportional to liquid level. Utilizing a reliable, proven sensing technique, this transmitter serves as a highly refined version of the basic bubbler air control. All LiquiSeal™ purge controls feature an internal isolation diaphragm.
788 Series Differential Pressure Purge Control Level Transmitter
Generates a constant flow of compressed air to purge a downpipe. The integral differential pressure transmitter provides 4 mA to 20 mA output proportional to liquid level. Provides 1:1 pressure signal to a compatible indicator or external transducer through 1/4 in. airline tubing. Backpressure sensed is equivalent to the hydrostatic head pressure due to actual liquid depth.
868 Series Differential Pressure Sensor Control Level Transmitter
Provides 4 mA to 20 mA output for broad compatibility and better than ±0.02% span repeatability. Utilizes piezoresistive technology for enhanced stability. Sensor Control provides 4 mA to 20 mA output for pneumatic sensors.