A new range of submersible hydrostatic
level transmitters, which can be
used in depths to 200m, has been
launched by Impress Sensors &
Systems. The transmitter offers an
SDI-12 digital output and an inbuilt
high accuracy temperature sensor.

The SDI-12L range uses either a
stainless steel silicon-based pressure
sensor or a ceramic pressure sensor in
marine-bronze. Both versions use
piezoresistive technology, which
provides long term stability and
repeatability of measurements.

Measurement ranges are from 0.5
up to 200mWG. The output units can
easily be adjusted to mmWG, cmWG,
inHg and all the standard engineering
units required via the SDI-12
interface and command structure.