Sensor Transmitter

DISSOLVED OXYGEN SENSOR The Insite Instrumentation Group Model 20 dissolved oxygen sensor is a unique product that combines advanced electronics with solid-state, optical sensing technology. The sensor is based on the field proven design of the Model 10 family of sensors with over 10,000 units shipped. To this proven design, the Model 20 adds the ability to mount the sensors throughout the plant without having to deal with running conduit between the sensor and analyzer. This allows for significant savings on installation costs while also allowing maximum flexibility in sensor placement. No other dissolved oxygen sensor can compare with the features and benefits of this revolutionary design. No Membranes—No Fill Solution—No Sensor Caps—Five Year Sensor Warranty The Model 20 sensor connects to the Sensor Transmitter junction box (p/n ST2). The ST2 then communicates with the parent analzer via a ZIGBEE compliant Rf module. There is an embedded antenna with an outdoor line of sight range up to one mile. When several sensor/ST2 pairs are installed they form a self-healing mesh network that increases reliability FLUORESCENCE DISSOLVED OXYGEN —THEORY OF OPERATION A very specific energy wavelength is transmitted to a ruthenium compound immobilized in a sol-gel matrix. The ruthenium will absorb this energy, changing the outer electron’s energy level. The electron will then collapse back to it’s original energy state, emitting the energy as a photon with a different specific wavelength. This is called fluorescing. If the intensity of the transmitted wavelength is tightly controlled, the amount of fluorescing is both predictable and repeatable. If oxygen molecules are present the amount of fluorescing is reduced, referred to as fluorescence quenching. By measuring the amount of quenching it is possible to determine the amount of oxygen present. MODEL 20 DATA SHEET Insite Instrumentation Group 80 Whisperwood Blvd.,Suite 107 Slidell, LA 70458 Phone - 985-639-0006 Fax - 985-639-0014 e-mail - info@insiteig.com Website– www.insiteig.com WIRELESS COMMUNICATIONS WITH THE ANALYZER UP TO SIXTEEN SENSORS CONNECTED TO ONE ANALYZER MODEL 20 DISSOLVED OXYGEN SENSOR With MODEL ST2 TRANSMITTER Insite Instrumentation Group e-mail - info@insiteig.com Website– www.insiteig.com OR CONTACT YOUR LOCAL TECHNICAL REPRESENTATIVE AT: Measuring Range 0 to 25 ppm or 0 to 200% percent saturation Accuracy 1% of reading or .05 ppm, whichever is greater Sensitivity / Resolution .01 ppm below 4.00, .1 ppm above 4.0 Stability .02 ppm Repeatability .02 ppm Sensor Drift Less than 2% per year Temperature Range 0 to 60 degrees C Response Time 95% in less than 60 seconds Sensor Check Automatic self diagnostics Sensor Cable Length 33 feet (10 meters) standard Ambient Temperature minus 20 degrees C to 70 degrees C Ambient Humidity 0 to 100 percent Wetted Materials Epoxy, polyurethane, and PVC MODEL 20 SPECIFICATIONS MODEL 20 SUBMERSIBLE SENSOR The Model 20 sensor was designed to measure the dissolved oxygen levels in open basins or channels. MODEL 20HT SENSOR The Model 20HT sensor was designed to be inserted into a pipe. The sensor is epoxy, polyurethane, and 316 SS. MODEL 20PI SENSOR The Model 25PI sensor was designed to be inserted into a pipe. The sensor is epoxy, polyurethane, and 316 SS. MODEL 20T SENSOR The Model 20T sensor was designed for sample bypass lines of mixed liquor.