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Manual abstract: user guide HANNA INSTRUMENTS HI 931002
Detailed instructions for use are in the User's Guide.
[. . . ] 4 OPERATIONAL GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 mA - pH RELATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 BATTERY REPLACEMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 FUSE REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] · Turn the Fine and Coarse knobs to any desired value and make sure that the D. U. T. reflects the current value displayed on the HI 931002 LCD.
· Calibrate the D. U. T. according to manufacturer instructions if necessary.
5
ACTIVE DRIVE (SIMULATOR) MODE
This mode is intended to drive a chart recorder, calibrate a pressure/ current transducer or a current indicator. The HI 931002 supplies a voltage to the 4-20 mA bus via an external connected 12-32 VDC power supply. The calibrator regulates the current, displayed on the LCD, as in the previous mode (Passive Drive). · Turn the meter on by pressing the ON/OFF key. · Select the measurement unit by pressing the UNIT key. · Switch the selection switch to the "Drive" mode. · Connect the external power adapter to the power socket on the right side of the HI 931002. · Wire the calibrator "Com. " and "A" connectors to the Device Under Test (D. U. T. ) input contacts (see page 4, #10 and #8 respectively) using the cables provided, paying attention to the polarity ("Com. " to - and "A" to + terminals). · Turn the Fine and Coarse knobs to any desired value and make sure that the D. U. T. reflects the current value displayed on the HI 931002 LCD.
PASSIVE MEASURING (TESTER) MODE
This mode is intended to test an active transmitter. The HI 931002 reads the current produced by the transmitter via the 4-20 mA bus and displays the reading in mA or pH units. · Disconnect the external power adapter from HI 931002 if present.
· Turn the meter on by pressing the ON/OFF key. · Select the measurement unit by pressing the UNIT key. · Switch the selection switch to the "Measure" mode.
· Wire the calibrator "Com. " and "P" connectors to the Device Under Test (D. U. T. ) input contacts (see page 4, #10 and #9 respectively) using the cables provided, paying attention to the polarity ("Com. " to - and "P" to + terminals). displays the same reading of the HI 931002 and calibrate the D. U. T. according to manufacturer instructions if necessary. IMPORTANT NOTE: Set the selection switch to MEASURE mode only if the D. U. T. is a transmitter and can limit current below 100mA. WRONG OPERATION WILL BREAK THE INTERNAL FUSE.
· Calibrate the D. U. T. according to manufacturer instructions if necessary. [. . . ] 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 shipping costs prepaid. When shipping any instrument, make sure it is properly packaged for complete protection. To validate your warranty, fill out and return the enclosed warranty card within 14 days from the date of purchase. [. . . ]
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