Profile: Instrumentation Northwest, Inc. deals with designing and developing the environmental industry. Our product line includes arrow, sensors, data collection, wireless telemetry, sampling, meters monitors and accessories. Our PT2X sensors is ideal for monitoring groundwater, well, tank and tidal levels, as well as for pump testing and flow monitoring. The sensors are constructed with 316 stainless steel, Viton® and Teflon®. The sensors are equipped with external power options (12 VDC) with AA's acting as backup and with low power - 2 internal AA batteries. Our environmental meters and monitors provide a Oil & Water interface meters, photo-ionization (PID) detectors, conductivity meters, dissolved oxygen meters, pH& redox meters and chloride meters.