Hanna Instruments HI 98194 Instruction Manual

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Hanna Instruments HI 98194 Instruction Manual Manual pdf 11 page image

21204.2.3 D.O. Sensor ActivationThe D.O. probe is shipped dry. To prepare the sensor for use:• Remove the black & red plastic cap. This cap is used for shipping purposesonly and can be thrown away.• Insert the supplied O-ring in to the membrane cap.• Rinse the membrane with some electrolyte solution. Refill with clean electrolyte.Gently tap the membrane cap to dislodge air bubbles. To avoid damaging themembrane, do not touch it with your fingers or directly tap the membrane.• With the sensor facing down screw the membrane cap counterclockwise to theend of the threads. Some electrolyte will overflow.• Rinse outside of sensor with deionized water.• Invert sensor and inspect. There should be no bubbles or debris between themembrane and sensor body.4.2.4 EC Sensor PreparationThe EC sensor does not need to be soaked or hydrated before use. Use the smallbrush included in the probe maintenance kit to clean and loosen any debrisbefore using.4.3 SENSOR INSTALLATIONThe HI 7698194 can support three differentsensors: Connector 1: pH, pH/ORPConnector 2: D.O.Connector 3: EC.To make installation easier, the sensors have color-coded caps and the sockets are identified withcolored triangles, corresponding to the colors ofthe sensors (pH - red; EC - blue; DO - white).The HI 7698195 support two different sensors:Connector 1: pH, pH/ORPConnector 2: ECThe HI 7698196 support two different sensors:Connector 1: pH, pH/ORPConnector 2: DO