User manual HANNA INSTRUMENTS HI 98701

[. . . ] Instruction Manual HI 98701 - HI 98801 HI 98704 - HI 98804 Portable Microprocessor Printing and Logging K-J-T Thermocouple Thermometers www. hannainst. com These Instruments are in Compliance with the CE Directives Dear Customer, Thank you for choosing a Hanna Instruments Product. Please read this instruction manual carefully before using the instrument. This manual will provide you with all the necessary information for the correct use of the instrument, as well as a precise idea of its versatility in a wide range of applications. If you need additional technical information, do not hesitate to e-mail us at tech@hannainst. com. [. . . ] User is prompted to enter password if it has been set to a value different from 0000, otherwise skip to step 6. Press ALT and CFM to confirm the password or CH/TIME or TEMP/ TIME to exit. If password is correct or not set, the meter will display "25. 0°C" (or "77. 0°F"), with the "2" (or "7") blinking, on the upper LCD and "C CJ" on its lower part; if wrong, it will return to measurement mode without any message. Enter the actual cold junction temperature (the environment temperature measured with a reference thermometer) using the arrow keys (temperature must be between 0 and 50 °C). When the "S" symbol blinks in the lower LCD, the reading is stable and calibration can be confirmed pressing ALT and CFM. The LCD will display CALC for a few seconds and then the meter returns to normal operational mode. 15 THERMOCOUPLE CALIBRATION 1. Ensure the meter is not displaying the cold junction temperature and press ALT, CFM and PAPER simultaneously while the meter is not printing nor logging to enter calibration mode. User is prompted to enter password if it has been set to a value different from 0000, otherwise skip to step 6. If password is correct or not set, the meter will display "0°C" on the upper LCD and "C 0" on its lower part; if wrong, it will return to measurement mode without any message. When the "S" symbol blinks in the lower LCD, the reading is stable and calibration can be confirmed pressing ALT and CFM. The second calibration point "1000°C" will be displayed on the upper LCD and "C 0" on its lower part. When the "S" symbol blinks in the lower LCD, the reading is stable and calibration can be confirmed pressing ALT and CFM. "CALC" is displayed on the upper LCD for a few seconds and then the meter returns to normal operational mode. Note: Even though only channel #1 is used during calibration, all the channels and all the thermocouple types are calibrated. Note: If a wrong input is connected or channel #1 is left open, when confirming the calibration point the LCD will display "Err". Note: To escape before ending the calibration procedure press CH/TIME or TEMP/TIME. Note: When connecting a mV simulator to the meter use two wires of the same material of the simulator terminals to avoid undesired thermocouple junctions that could alter the mV input of the meter. Note: Avoid touching the meter connectors if possible and wait about 15 minutes for temperature stabilization after connections before proceeding with the calibration steps. 16 HI 98801 - HI 98804 PRINTING / LOGGING FUNCTIONS Two different modes to print / log data are available: 1. Timed logging; samples are stored and printed (if print function is active) at fixed time intervals. Log on demand; samples are stored and printed (if print function is active) when the LOG key is pressed. It's possible to perform the Log on demand either in normal mode or in Timed logging mode. It is possible to switch from logging without printing to logging with printing in two ways: · set the function code 02 to "On" to enable printing, to "Off" to disable printing · press ALT and PAPER to toggle between printer enabled and printer disabled while in Timed logging. [. . . ] 1 = Motor locked 2 = Printer clutch jammed 3 = Selection lever fault I2C BUS ERROR In case of an I2C bus fatal error due for example to a defective EEPROM or RTC, the message "Serial bus error" keeps scrolling across LCD from right to left indefinitely. Meter should be returned for repair (see warranty section). 25 BATTERY REPLACEMENT When the batteries are inserted and no power adapter is connected, the meter can recognize different batteries charge levels. The backlight and printer are automatically disabled and it is not possible to enable them until new batteries are inserted or an external power adapter is connected. Backlight and printer are disabled and meter can work for about 20 hours. [. . . ]