Sanitzer Sensor FAQ

A: Yes. Amperometric Sanitizer sensors require a controlled flow rate between 0.2-0.6gpm. Sensorex advises that the sensor is installed in flow cell FC72 and used with FM001 flow meter or a product similar to it.

A: Replace cap when damaged or when readings are erratic or much higher compared to DPD test

A: Drain and refill the sensor’s electrolyte approximately every two months.

A: Yes, this is very important. A new sensor or sensor that has had maintenance or has been out of flow should be equilibrated in flow for 12 hours or overnight whenever possible.

A: The amperometric sensors generate 4-20mA output and are factory scaled to specific range 0-2, 0-5, or 0-10ppm for example.

A: Yes, 12-24V DC with minimum of 250 mA is required. Maximum load is 1 Watt.

A: Free Chlorine is affected by pH and must be within 5.5-8.0 range. CLO2 and total chlorine are not affected by pH. All sensors are affected by temperature. The sensors should not be used in water containing surfactants, organic chlorine, or stabilizers such as cyanuric acid, ozone, or bromine.

A: Amperometric sensors are calibrated to a DPD test on a grab sample. The sensor's 4-20mA output is adjusted to a value equal to the ppm reading of the DPD test.

A: Store sensor at 5 deg C - 50 deg C ONLY and maximum humidity of 90% (non-condensing). a. Short Term Storage (one week or less): Store in Flow cell with water to prevent the probe from drying out. b. Intermediate Term (one week to one month): Store in cap, bottle, or beaker with water to keep membrane wet. c. Long Term (one month or longer): Remove Membrane Cap and store completely immersed in DI water or tap water if DI water is not available. Turn sensor upright and shake it to remove fill solution from inside the sensor.