User manual HANNA INSTRUMENTS HI 98201

[. . . ] ORP HI 98201 Pocket-sized Redox Meter OPERATION: · Remove the protective cap. · Turn the meter on with the ON/OFF switch located on the top of the meter. [. . . ] · In case of erroneous readings even after an accurate conditioning and calibration, the reference junction might be contaminated or clogged. · Pull out 2 mm (1/8'') of the cloth junction to renew the electrode reference (it is recommended to cut the cloth leaving always at least 2 mm 1/8'' over the reference compartment) and repeat the maintenance and conditioning proce- dure. After that, the electrode can be replaced (see the Electrode Replacement section). BEPS & BATTERY REPLACEMENT: The meter is supplied with BEPS (Battery Error Preventing System) which avoid any erroneous reading due to low battery level. When the batteries are too low, the meter automatically switches itself off. To replace the batteries, slide off the battery compartment cover and replace all four 1. 5V batteries while paying attention to their polarity. Batteries should only be replaced in a nonhazardous area using the battery type specified in this instruction manual. ONE YEAR WARRANTY & SERVICEABLE: Covered by one year warranty against defects in workmanship and materials, this tester is now completely serviceable. The ORP is in compliance with the CE directives. Manufacturers since 1978 ORP HI 98201 Pocket-sized Redox Meter SPECIFICATIONS: RANGE -999 to +999 mV RESOLUTION 1 mV ±5 mV ACCURACY (@20°C/68°F) TYPICAL EMC DEVIATION ±5 mV ENVIRONMENT 0 to 50 C (32 to 122 F); 95% RH BATTERY TYPE 4 x 1. 5V alkaline (included) BATTERY LIFE approx. 700 hours of continuous use DIMENSIONS 175 x 41 x 23 mm (7. 9 x 1. 8 x 1") WEIGHT 78 g (2. 7 oz. ) ACCESSORIES: HI 7020M HI 7091M HI 7092M HI 70300M HI 7061M HI 73201 ORP 200/275 mV solution (230 mL bottle) Reducing solution (230 mL bottle) Oxidizing solution (230 mL bottle) Storage solution (230mL) Electrode cleaning solution (230mL bottle) Spare electrode ELECTRODE REPLACEMENT: The electrode can be easily replaced in the following way: · Slide off the battery cover. · Remove the screw on the back of the ORP located below the battery compartment and slide off the whole internal part of the tester. Internal circuit and electrode: Visit our Internet Home Page: http://www. hannainst. com · To remove the electrode proceed as follows: Remove the fastening screw on the front (1) to loose the electrode. The internal circuit is connected to the electrode through two wires (one for the glass sensor and one for the reference). [. . . ] · Reinsert the internal circuit with the new electrode into the plastic casing. · Recondition the ORP before using it again. IS98201R3 05/01 [. . . ]