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HI 98191

pH/mV/ISE/Temperature

Portable Meter

Quick Reference Guide

Quick Reference Guide

Quick Reference Guide

Quick 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

w w w . h a n n a i n s t . c o m

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