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Battery replacement
The meter displays the remaining percentage when turned
on. When the battery level is below 5%, the
the bottom left of the LCD lights up to indicate a low battery
condition. If the battery level is low enough to cause
erroneous readings, the Battery Error Prevention System
(BEPS) turns the HI 991000 off.
To ensure a watertight seal, the batteries are accessed by
separating the front and back halves of the meter. The
4 Philips-head screws are located on the 4 corners of the
back of the meter. Once the back has been removed,
carefully replace the 4 AAA batteries located in the battery
compartment, paying attention to their polarity. Re-attach
the back, making sure that the gasket is in place.
Calibration solutions
HI 77400P
pH 4.01 & 7.01 (20 mL, 5 pcs each)
HI 770710P pH 7.01 & 10.01 (20 mL, 5 pcs each)
HI 70004P
pH 4.01 calibration solution (20 mL, 25 pcs)
HI 70006P
pH 6.86 calibration solution (20 mL, 25 pcs)
HI 70007P
pH 7.01 calibration solution (20 mL, 25 pcs)
HI 70009P
pH 9.18 calibration solution (20 mL, 25 pcs)
HI 70010P
pH 10.01 calibration solution (20 mL, 25 pcs)
Other accessories
HI 710007
Protective rubber boot
HI 991000 is in compliance with the CE directives
EN 50081-1 and 50082-1
h t t p : / / w w w . h a n n a i n s t . c o m
HI 991000
Portable pH Meter
symbol on
-
+
SPECIFICATIONS
Range
Resolution
Accuracy
(@20°C/68°F)Temperature
Typical EMC
Deviation
Temperature
Compensation
Probe
Battery Type/Life
Environment
Dimensions
Stabilty
indicator
Battery
percentage
Low battery
indicator
Instruction Manual
pH
0.00÷14.00
Temperature 0.0÷60.0°C or 32.0÷140.0°F
pH
Temperature
0.1°C or 0.1°F
pH
±0.01pH
±0.5°C or ±1°F
pH
Temperature
±1°C or ±1°F
Automatic
1 or 2 point with auto-buffer recognition
pH 4.01/7.01/10.01 or pH 4.01/6.86/9.18
HI 1291 pH/temperature probe (included)
4 x 1.5V AAA with BEPS / 500 hours
0 to 50°C (32 to 122°F); RH 100%
143x80x38mm (5.6x3.2x1.5")
A T C
ppm ppt µS pH
!
%
CAL
°C
-
+
°F
0.01pH
±0.3pH
Primary
display
Secondary
display
Selectable
temperature
unit
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Table of Contents
Related Manuals for Hanna Instruments HI 991000
Summary of Contents for Hanna Instruments HI 991000
- Page 1 HI 70010P pH 10.01 calibration solution (20 mL, 25 pcs) Dimensions 143x80x38mm (5.6x3.2x1.5”) Other accessories HI 710007 Protective rubber boot HI 991000 is in compliance with the CE directives Stabilty Primary EN 50081-1 and 50082-1 indicator display A T C ppm ppt µS pH...
- Page 2 • Press the ON/OFF/MODE button to return to normal pH measuring mode. Connect the HI 1291 probe to the DIN socket on the top of the HI 991000 by aligning the pins and pushing in the plug. Tighten the nut to ensure a good connection. Remove the pH calibration protective cap from the HI 1291 probe before taking any measurements.
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