User manual HANNA INSTRUMENTS HI 982401

[. . . ] Damages due to accident, misuse, tampering or lack of prescribed maintenance are not covered. If service is required, contact the dealer from whom you purchased the instrument. If under warranty, report the model number, date of purchase, serial number and the nature of the failure. If the repair is not covered by the warranty, you will be notified of the charges incurred. [. . . ] During operation, ESD wrist straps should be worn to avoid possible damage to the electrode by electrostatic discharges. Any variation introduced by the user to the supplied equipment may degrade the instrument's EMC performance. To avoid electrical shock, do not use this instrument when voltages at the measurement surface exceed 24 VAC or 60 VDC. To avoid damages or burns, do not perform any measurement in microwave ovens. GENERAL DESCRIPTION HI 982401 is an ORP meter specially designed to meet the needs of monitoring ORP such as in swimming pools. The housing has been completely sealed against vapors and humidity with IP54 rating. Simply hang the above the sample to be monitored. The HI 3214P/2 gel-filled ORP electrode (optional) is interchangeable and the BNC connector is protected behind a waterproof sheath. The unique design of the electrode provides longer life even in harsh conditions. 1 6 · With a small screwdriver adjust the setpoint trimmer to display the desired value in the 350 to 850 mV range (e. g. · Make sure the switch is moved back to the right (MEASURE Mode). · Replace the rear panel and the gasket, making sure that the unit is properly closed. · Whenever the mV reading is lower than the setpoint, the red alarm LED blinks to warn the user. Maintenance: To minimize clogging and provide longer life to the ORP electrode, it si recommended to clean it monthly. Immerse the tip of the electrode in HI7061 cleaning solution for at least one hour and then rinse it with tap water. accuracy by immersing the electrode in Check the ORP HI7020 ORP solution. The reading should be between 200 and 275 mV at 20°C (68°F). Otherwise clean the platinum tip of the electrode by rubbing it with a soft cotton or lint-free cloth soaked with HI7061 cleaning solution. After cleaning, condition the ORP electrode by leaving it in a pretreatment reducing (HI7091) or oxidizing (HI7092) solution for half an hour. 5 The alarm setpoint is adjustable and if the ORP value is out of range the user is alerted by a red light. The meter is factory calibrated and does not need recalibration. You no longer need to worry about battery changes: the unit runs without interruption on 12 VDC power supply. FUNCTIONAL DESCRIPTION 1. LIQUID CRYSTAL DISPLAY 2 SPECIFICATIONS HI 982401 ORP Range ±999 mV Resolution 1 mV Accuracy (@20°C/68°F) ±5 mV Typical EMC Deviation ±5 mV Setpoint Selectable from 350 to 850 mV Alarm LED blinks when the measured ORP value is lower than the setpoint Calibration Factory calibrated Probe HI 3214P/2 interchangeable ORP electrode (optional) Casing IP54 Power supply External 12 VDC (included) Dimensions 86 x 94 x 33 mm (3. 4 x 3. 7 x 1. 3") Weight 150 g (5. 3 oz. ) mize contamination and store it with a few drops of HI 70300 storage solution in the protective cap. [. . . ] · Slide the protective sheath down. Connect the HI 3214P/2 ORP electrode to the BNC connector and then slide up. Make sure the connector is completely covered. · Do not be alarmed if white crystals appear around the electrode protective cap. [. . . ]