User manual HANNA INSTRUMENTS HI 93552R

[. . . ] If under warranty, report the model number, date of purchase, serial number and the nature of the failure. First obtain a Returned Goods Authorization number from the Customer Service department, then return the instrument with the Authorization number included along with shipment costs prepaid. If the repair is not covered by the warranty, you will be notified of the charges. When shipping any instrument, make sure it is properly packaged for complete protection. GENERAL DESCRIPTION These instruments are powerful and flexible thermometers, which can take measurements using different types of thermocouple probes (K, J and T), and have been designed using the latest microprocessor technology to provide reliable and accurate high resolution measurements in a wide temperature reange. [. . . ] 500 hours of continuous use (BL off) Auto-off user selectable: 8 min, 60 min, disabled Serial Port unidirectional, 8-bit data, 1200 baud Communication (see "Serial Communication" section) Environment -10 to 60°C (14 to 140°F); RH 100% Dimensions 150 x 80 x 36 mm (5. 9 x 3. 1 x 1. 4") Weight 235 g (8. 3 oz. ) Range (*) K (*) Range may be limited by probe. HI 93551R HI 93552R Keyboard Functions: ON/OFF : turn the meter ON and OFF. CLR : clear the HI and LO values, reset the relative or average measurement. ALT : enable the second function keys; the "ALT" tag turns on to indicate that the second functions are enabled. Note: The ALT key can be released before pressing the second function key for 1-hand operation. ALT/ CAL : press and hold for about 5 seconds to enter the Calibration mode (with reading within ±3°C range). (ALT +) BL : toggle the backlight ON and OFF. 9 8 OPERATIONAL GUIDE To switch the instrument ON, press the ON/OFF key. The thermometer will carry out a self diagnostic test routine, the LCD will show all segments for a few seconds (or as long as ON/OFF is held), followed by the percentage indication of the remaining battery life. HOLD and MR FUNCTIONS The HOLD function is activated by pressing the HOLD key. The measured temperature is held on the display until HOLD is pressed again. Note: Although the display is frozen, internally the meter continues measuring and updating Hi/Lo, relative and average values. In HI 93551R, HI 93552 and HI 93552R, the held value is also stored in non-volatile memory and can be recalled by pressing (ALT+) MR keys. While the MR key is held, the "HOLD" tag lights up and the meter displays the stored value; when the MR key is released, after 1 second the meter returns to normal measurement mode. The thermometer then enters normal measurement mode. If a temperature probe is plugged in, the meter displays the measured temperature. If no probe is plugged in, or if the reading is over-range, the display shows flashing dashes. If a measurement is slightly over the range of the meter specifications, the display will flash the closest full-scale value. Note: The meters are provided with an acoustic signal feature activated when buttons are pressed, which can be disabled using a switch located in the battery compartment (see figure on page 10). HIGH/LOW TEMPERATURES The maximum and minimum temperatures are continuously monitored and displayed on the lower portion of the LCD. Note: When the reading goes over-range or the probe is removed, the Hi and Lo values display dashes until cleared. °C/°F SELECTION Measurements can be displayed in either degrees Celsius or Fahrenheit. The meter is factory set to °C scale; to change the scale, press °C/°F key (HI 93551, HI 93551N and HI 93551R) or (ALT+)°C/°F keys (HI 93552 and HI 93552R), or set the switch located in the battery compartment (HI 93542, see figure on page 10). CLEAR FUNCTION Upon pressing the CLR key, the High/Low values may be cleared at any time during measurement and the current reading is assigned to the highest and lowest temperature values for the displayed channel only. In HI 93551R, HI 93542, HI 93552 and HI 93552R models, pressing CLR also resets relative and average values. THERMOCOUPLE TYPE SELECTION, KJT By pressing KJT (HI 93551, HI 93551N and HI 93542) or (ALT+)KJT keys (HI 93551R, HI93552 and HI 93552R), the thermometer is set according to the connected thermocouple type. K for K-type, J for J-type, T for T-type. AUTO SHUT-OFF To save battery life, the meters are provided with an auto-off feature, which switches the meter off after 60 minutes of nonuse. When average mode is entered, the "AVG" tag lights up and the current value is set as the new beginning value. In average mode, the main body of the LCD shows the average temperature, while the lower portion displays the current temperature for the selected channel. 12 13 The average mode will calculate the average for a period of up to 24 hours. If a different mode is selected for that channel, the average will no longer calculate and the value will be lost. [. . . ] It is generally recommended to have all thermometers recalibrated at least once a year. For an accurate recalibration, contact your nearest Hanna Customer Service Center. Before using these products, make sure that they are entirely suitable for the environment in which they are used. Operation of these instruments in residential area could cause unacceptable interferences to radio and TV equipments, requiring the operator to take all necessary steps to correct interferences. Any variation introduced by the user to the supplied equipment may degrade the instruments' EMC performance. [. . . ]