User manual HANNA INSTRUMENTS HI 982401

[. . . ] 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. If the instrument is to be returned to Hanna Instruments, first obtain a Returned Goods Authorization Number from the Customer Service department and then send it with shipment costs prepaid. [. . . ] Operation of this instrument in residential areas could cause unacceptable interferences to radio and TV equipment. 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. 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. [. . . ] Adjusting the Setpoint · Unscrew the 4 screws on the meter back, remove the rear panel and the seal gasket to access the MEASURE/SET switch and the setpoint adjustment trimmer. · Move the switch to the left (SET position). 4 RP OPERATIONAL GUIDE ORP electrode CONNECTION The BNC connector is protected against vapors and humidity by a waterproof sheath. Connect the HI 3214P/2 ORP electrode to the BNC connector and then slide up. [. . . ]