Hanna Instruments HI 98191 User manual

HI 98191
pH/mV/ISE/Temperature
Portable Meter
Quick Reference GuideQuick Reference Guide
Quick Reference GuideQuick Reference Guide
Quick Reference Guide
SPECIFICATIONS
•RANGE -2.0 to 20.0/ -2.00 to 20.00/ -2.000 to 20.000 pH
±2000.0 mV
From 1.00 E-7 to 9.99 E10 conc.
-20.0 to 120.0 ºC (-4.0 to 248.0 ºF)
•ACCURACY ±0.01/±0.002 pH
(@25 ºC / 77 ºF) ±0.2 mV
±0.5% of reading
±0.4 ºC (±0.8 ºF) (excluding probe error)
•REL. mV OFFSET ±2000 mV
OPERATIONAL GUIDE
•To switch ON and OFF: press ON/OFF ( ).
•To select the range pH, ORP (mV) or ISE: press RANGE.
•To select the pH resolution or to toggle between mV and Rel mV:press
MODE.
•To read contextual help: press HELP.
•To take pH, ORP, relative mV or ISE measurements: connect the electrode’s
BNC connector to the appropriate socket, remove the protective cap and immerse
the electrode tip into the sample. For ATC, connect the temperature probe to the
appropriate socket. Stir briefly and wait for the reading to stabilize. For accurate
readings, make sure you have a calibrated meter and a conditioned electrode.
•For temperature compensation:
Automatic - use temperature sensor inside the pH electrode.
Manual - remove the temperature connector and use the ARROW keys to set the
temperature value.
•To enter pH/Rel mV/ISE Calibration mode: press CAL while in pH/Rel mV/
ISE measurement mode.
•To change calibration buffer/standard: press the ARROW keys.
•To clear pH/Rel mV/ISE calibration: press Clear functional key.
pH CALIBRATION PROCEDURE
•Place the probe in the first buffer.
•Wait for “CFM” blinking. Press CFM to accept the calibration point (see Note).
•Follow the above procedure until the fifth calibration point is reached. The
meter returns to measurement mode.
Note: For one, two, three or four-point calibration, press CAL after the
appropriate accepted buffer. The meter returns to measurement
mode.
QR98191 07/14
www.hannainst.com

Working with custom buffers
•To select a custom buffer (see Note): press the ARROW keys while in pH calibration
mode until the Custom key will be displayed on the LCD.
•To change the custom buffer value in accordance with current temperature:
press Custom and then the ARROW keys. Press Accept to confirm the value.
Note: The custom buffer is supposed to be set in SETUP mode.
Replacing an old calibration point
•To select the old calibration point to be replaced: press the ARROW keys.
•To confirm the old calibration point to be replaced: press CFM.
•To leave replace mode: press CAL.
pH Calibration messages:
•Wrong buffer - the pH reading is far from the selected buffer.
•Electrode dirty/broken alternatively with “Buffer Contaminated” the electrode
offset is out of acceptable range.
•Wrong Buffer Temperature: buffer temperature out of defined range.
•Wrong Old Slope: inconsistency between current and old calibration parameter.
•Clean Electrode: an abnormal difference between new and previous calibration
detected.
•Outside Cal Range: out of calibration range.
RELATIVE mV CALIBRATION PROCEDURE
•To enter/exit relative mV calibration mode: press CAL while in relative mV
measurement mode; the relative mV value is displayed on the main LCD line and
the absolute mV value on the secondary line.
•To change the displayed relative mV value: press the ARROW keys.
•To confirm relative mV calibration: press CFM. The meter returns to relative mV
measurement mode.
ION CALIBRATION PROCEDURE
•Place the ISE probe in the less concentrated standard.
•Wait for “CFM” to blink. Press CFM to accept the calibration point (see Note).
•Follow the above procedure until the fifth calibration point is reached. The meter
returns to measurement mode.
Note: For one, two, three or four-point calibration, press CAL after the appropriate
accepted solution. The meter returns to measurement mode.
SETUP MODE
•To enter/exit SETUP view mode: press SETUP while in measurement mode.
•To toggle between displayed parameters: press the ARROW keys.
•To enter/exit SETUP changing mode: press Modify or simply select option.
GLP MODE
•To enter/exit GLP mode: press GLP while in measurement mode.
LOG MODE
•To store the current reading in memory: press LOG while in measurement mode.
•To view logged data: press RCL while in measurement mode.
•To view more details: press More.
•To delete records: press Delete key.
•To delete all records: press Delete All.
AutoEnd MODE
•To freeze the first stable reading on the LCD: press AutoEnd while in measurement
mode; the “WAIT” tag will blink until the reading will stabilize, then “Hold”
will be displayed.
•To return to measurement mode: press Continue.