HOBO data loggers for monitoring indoor, outdoor, and underwater environments.
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The pHionics STs pH sensor is a submersible, water quality transmitter featuring an integrated preamp and an isolated 'true 2-wire', 4-20 ma transmitter. Compatible with Onset HOBO RX3000 weather stations, the STs pH sensor provides independent channels to simultaneously transmit a pH and temperature signal -- two wires for pH and two wires for temperature. The compact design makes the rugged sensor/transmitter ideal for applications such as process control, data acquisition, wastewater treatment, and groundwater monitoring.