Dissolved Oxygen Pen Meter 850045 Instruction Manual
TABLE OF CONTENTS Features …………………………………...…...……... 3 Front Panel Description ……………………………… 4 Calibration …………………………………………….. 5-6 Measurement Procedures ………………………..…. 7-9 Probe Maintenance …………………….…………… 10-11 Specifications ……..………………………….………. 12-13 Battery Replacement ………………………...….…...
FEATURES Heavy duty polarographic D.O. probe including temperature sensor Automatic Temperature Compensation Microprocessor assures high accuracy Dual display LCD Auto power off IP-67 water resistance.
FRONT PANEL DESCRIPTION FIGURE 1 1-6 1-1 1-2 1-3 1-4 1-5 1-7 1-1 1-2 1-3 1-4 1-5 1-6 1-7 4
CALIBRATION Calibration 1. Fill the D.O. meter probe head (completely) with Electrolyte prior to using the first time. Please refer to the Probe Maintenance section (page 10) for instructions. 2. Prior to taking measurements, the D.O. meter should be calibrated using the following steps. 3. Remove the red protective cover (Fig., 1-7) from the black probe head (Fig., 1-5). *The small sponge inside the red cover keeps the diaphragm moist with water. 4. To turn the meter on, press the Power On/Off button (Fig.
CALIBRATION 6. Press and release the HOLD button (Fig., 1-3) - the display will read HOLD. 7. Press and release the REC button (Fig., 1-4) - the display will show a flashing CAL indicator and the upper value will change to 30, then countdown to 0 (takes 30 seconds). 30 Flashing Counts down from 30 to 0 CAL 8. Once the countdown has been completed, the End indicator will be displayed momentarily, then display will return to the normal display as shown on page 3.
MEASUREMENT PROCEDURES Dissolved Oxygen (DO) Measurement 1. Make certain the meter has been calibrated (page 5). 2. Press and hold the Unit button (Fig., 1-3) for at least 2 seconds, the display will change from %O2 to mg/L. 3. The meter is now ready to measure. 4. To activate Automatic Temperature Compensation the probe head (Fig., 1-5) must be immersed to a depth of 10cm. It takes several minutes for the temperature of the probe and liquid to equalize. 5. For accurate D.O.
MEASUREMENT PROCEDURES Temperature Measurement 1. When not in calibration mode, the meter continually displays the temperature at the bottom left hand corner of the LCD in either ºC or ºF. 2. Press and hold the REC button (Fig., 1-4) for at least 2 seconds to switch the temperature unit from ºC to ºF. Note... The temperature unit cannot be changed when the meter is in record mode (when the REC indicator is displayed on the LCD). Data Hold 1. While measuring, press the Hold button (Fig.
MEASUREMENT PROCEDURES Data Record (Maximum & Minimum Reading) 1. The data record function records the maximum and minimum readings. Press the REC button (Fig., 1-4) to start the Data Record function - the display shows REC. 2. Press the REC button: the REC MAX symbol, along with the maximum value shows on the display. 3. Press the REC button again and the REC MIN symbol, along with the minimum value shows on the display. 4.
PROBE MAINTENANCE Initial Use 1. Unpack the DO meter and fill the probe head with the Electrolyte (OXEL-03) fluid provided. 2. Follow the steps shown in Figure 2. Probe Head & Fluid Maintenance 1. Whenever the DO meter will not calibrate correctly or the DO reading is unstable, check to see if the Electrolyte fluid is dirty or has evaporated. 2.
PROBE MAINTENANCE 3. If the diaphragm is damaged replace it with one of the spare probe heads provided with the meter. 4. Refill the new probe head with Electrolyte fluid by following the steps shown below. Figure 2 Fill probe head with Electrolyte fluid. 1. Unscrew the probe head (Fig., 2-3) 2. Pour out the current Electrolyte fluid from the probe head (unless this is the initial use). 3. Fill the probe head (to full capacity) with fresh Electrolyte (OXEL-03) fluid. 4.
SPECIFICATIONS Display LCD size: 29mm x 28mm Measurement & Range Dissolved Oxygen: 0 to 20.0 mg/L Resolution Dissolved Oxygen: 0.1 mg/L Temperature: 0 to 50 ºC 32 to 122 ºF Oxygen in Air: 0.1% O2 Temperature: 0.1 ºC Accuracy Dissolved Oxygen: ±0.4 mg/L Oxygen in Air: ±0.7% O2 Temperature: ±0.8 ºC/1.5 ºF Power Off Auto shut off Data Hold Holds the current displayed reading Operating Temperature 0 to 50 ºC 32 to 122 ºF Sample Time Approx.
SPECIFICATIONS Water Resistance IP-65: 0 to 50 ºC - 32 to 122 ºF IP-67: 0 to 30 ºC - 32 to 86 ºF Dimension 180 x 40 x 40mm 8.1” x 1.9” x 1.
BATTERY REPLACEMENT 1. Replace the batteries when the low battery icon X is displayed in the upper left corner of the LCD. Use 4 new AAA batteries. 2. To replace the batteries, open (turn counter-clockwise) the Battery Cover (Fig., 1-6). 3. Ensure the Battery Cover is secured after replacing the batteries.
Sper Scientific warrants this product against defects in materials and workmanship for a period of one (1) years from the date of purchase, and agrees to repair or replace any defective unit without charge. If your model has since been discontinued, an equivalent Sper Scientific product will be substituted if available. This warranty does not cover probes, batteries, or damage resulting from accident, misuse, or abuse of the product.
