User Manual ExStik® FL700 Fluoride Meter Additional User Manual Translations available at www.extech.
Introduction The model FL700 is a system specifically designed for the quick and accurate measurement of fluoride ions in drinking water and other aqueous samples. Unlike other electrode based systems the FL700 consists of the sensing electrode, measuring electronics, and the display in one convenient package. This meter is shipped fully tested; with proper use, this instrument will provide years of reliable service.
Description Meter Description 1. Battery compartment cover 2. LCD Display 3. MODE/HOLD button 4. CAL/RECALL button 5. ON/OFF button 6. Electrode Retaining Collar (ring) 7. Electrode Sensor (Note: The Electrode storage cap is not shown this diagram) Electrode Sensor Description The sensing electrode is a europium doped lanthanum fluoride single crystal that has been incorporated into a removable sensing module that houses a reference electrode and temperature measurement system.
Operation Preparation for Use 1. Remove the FL700, electrode module and sample cup from its box. Remove caps from module 2. If not already done, fit the electrode module onto the end of the meter body, making sure that the slots line up correctly, and turn the module retaining ring to secure the assembly. Powering the FL700 Press the ON/OFF button to turn the meter on or off. If the batteries are weak, the ‘BAT’ indicator appears on the LCD. Power-On Diagnostics 1.
Calibration Frequency Calibrate the FL700 prior to each new measurement batch or if more than 12 hours has elapsed since the last calibration. Other Standards The FL700 can also be calibrated between 0.5 and 5.0 ppm F. Follow the calibration instructions above but substitute 0.5 ppm for 1.0 ppm and 5.0 ppm for 10 ppm. Slope Adjustment 1.
Temperature Units (ºF / ºC) 1. 2. 3. 4. With the unit OFF, press and hold the CAL/RECALL button With the CAL/RECALL button depressed, momentarily press the ON/OFF button to turn the unit ON The CAL/RECALL button can be released when ‘Self Cal’ is shown in the display To switch back to the previous unit of measure, repeat steps 1 through 3. Units of Measure The FL700 has 3 different units of measure. (ppm, mV, and mg/l). To change the units of measure, follow these steps: 1. Turn on the meter. 2.
Maintenance Battery Replacement 1. Twist off the battery compartment cover 2. Holding the battery housing in place with a finger, pull out the battery carrier using the two small tabs 3. Replace the four (4) CR2032 batteries observing proper polarity 4. Replace the battery carrier, reattach the battery compartment cap and tighten securely Never dispose of used batteries or rechargeable batteries in household waste.
Specifications Range 0.10 to 9.99ppm (mg/l) Accuracy ± 3% of reading or ± 0.1ppm (whichever is greater) Resolution 0.1ppm Display 2000 count, Dual function 3 ½ digit LCD with Bargraph, Display size: 24 mm x 20 mm Electrode Europium doped lanthanum fluoride single crystal Electrode life 6 months minimum Measurement method In compliance with EPA Method 340.2 (Potentiometric Ion Selective Electrode) Response Time 90% of change in less than 30 seconds (typical) Operating Temp.
