Hanna Instruments HI 9146 - Manual (Page 3)

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HI 9146 is state-of-the-art, heavy-duty DO meter, designed to provide
laboratory results and accuracy under harsh industrial conditions.
This instrument is provided with a series of new diagnostic features and
messages on the LCD which add an entirely new dimension to the
measurement of DO, by allowing the user to dramatically improve the
reliability of the measurement.
The Auto Endpoint feature automatically freezes the display when a
stable reading is reached.
Dissolved Oxygen is indicated in ppm (parts per million) or in %. All
measurements are automatically compensated for temperature. Salinity
compensation in water allows direct determination of Dissolved Oxygen in
saline waters and altitude compensation readjusts for the altitude variance.
The Dissolved Oxygen probe has a membrane covering the polarographic
sensors and a built-in thermistor for temperature measurements and
compensation. This permeable PTFE membrane isolates the sensor
elements from the testing solution, but allows Oxygen to pass through.
When a voltage is applied across the sensor, oxygen that has passed
through the membrane reacts causing a current flow, and hence
determining a reading.
The Battery Error Preventing System (BEPS) detects when the batteries
become too weak to ensure reliable measurements.
The backlight feature is automatically disabled when batteries are
getting low and a clear indication is displayed to warn the user of this
condition. However, the meter continues to measure correctly even when
the low battery indication is displayed. The meter automatically switches
itself off when the batteries are too weak to support proper function.
In addition, the meter allow the user to enter an ID code to uniquely
identify the instrument.
Remove the instrument from the packing material and examine it carefully
to make sure that no damage has occurred during shipping. If there is any
damage, notify your Dealer or the nearest Hanna Customer Service Center.
Each instrument is supplied with:
• HI 76407/2 DO probe with 2 m (6.7’) cable
• HI 76407A membarne cap (2 pcs.)
• HI 7041S electrolyte solution (30 mL)
• 3 x 1.5V AAA, Batteries
• Instruction Manual
• Rugged Carrying Case
Note: Save all packing material until you are sure that the instrument
functions correctly. All defective items must be returned in the
original packing with the supplied accessories.
P R E L I M I N A R Y E X A M I N A T I O N P R E L I M I N A R Y E X A M I N A T I O N P R E L I M I N A R Y E X A M I N A T I O N P R E L I M I N A R Y E X A M I N A T I O N P R E L I M I N A R Y E X A M I N A T I O N
G E N E R A L D E S C R I P T I O N G E N E R A L D E S C R I P T I O N G E N E R A L D E S C R I P T I O N G E N E R A L D E S C R I P T I O N G E N E R A L D E S C R I P T I O N