Operational Guide
The meter is shipped with the battery inside.
To turn the meter ON and check the battery
status
Press the ON/OFF button to turn the meter on.
At start-up, all the LCD segments are displayed
for 1 second, “Err CAL“ is displayed when no
calibration is available, then the percent indication
of the remaining battery life is displayed for
another second. The meter then enters the normal
measuring mode.
Note: Keeping the ON button pressed while
turning the meter on will display all LCD
segments as long as the button is pressed, after
10 seconds the firmware version and model will
be displayed. Pressing the button 3 times will
display the serial number (SN--1, SN--2, SN--3).
To enter measurement mode press the ON/OFF
button briefly.
Thank You
Thank you for choosing a Hanna Instruments
product. Please read this instruction manual
carefully before using the instrument.
For more information about Hanna Instruments
and our products, visit www.hannainst.com or
e-mail us at [email protected].
For technical support, contact your local Hanna
Instruments Office or email us at
[email protected].
Find your local Hanna Instruments Office on
www.hannainst.com.
Preliminary Examination
Remove the meter from the packing material and
examine it carefully to make sure that no damage
has occurred during shipment. If noticeable damage
is evident, contact your local Hanna Instruments
Office.
Each meter is supplied with:
• CR2032 battery (1 pc.)
• Storage / Protection sleeve
• Instruction manual
• Quality Certificate
Note: Save all packing material until you are
sure that the instrument functions correctly. All
defective items must be returned in the original
packaging with the supplied accessories.
General Description
The Hanna Instruments GroLine is a special pocket
conductivity meter expressly designed to directly
measure soil conductivity. The meter also measures
temperature.
Soil conductivity is a simple measurement that
indicates if salts are present in the sample soil.
Conductivity can be measured in units of μS/cm,
mS/cm, or dS/m.
The conductivity is calibrated at one point, in liquid
conductivity standard.
Hanna Instruments reserves the right to modify the
design, construction, or appearance of its products
without advance notice.
Specifications
Range
0 to 4000 μS/cm
0.00 to 4.00 mS/cm (dS/m)
0.0 to 50.0 °C (32.0 to 122.0
°
F)
Resolution
1 μS/cm
0.01 mS/cm (dS/m)
0.1 °C (0.1
°
F)
Accuracy
(@25 °C/77 °F)
±50 μS/cm (0 to 2000 μS/cm)
±300 μS/cm (2000 to 4000 μS/cm)
±0.05 mS/cm (0.00 to 2.00 mS/cm)
±0.30 mS/cm (2.00 to 4.00 mS/cm)
±1.0 °C (±1.5
°
F)
Temperature
Compensation
automatic, with temperature coefficient
(
β
) fixed @ 2%/°C
Calibration
single point, 1.41 mS/cm
Battery Type
CR2032 Li-ion
Battery Life
approximately 100 hours
of continuous use
Probe
114 mm (4.5“) Stainless
steel penetration
Environment
0 to 50 °C (32 to 122 °F);
RH 95% max
Dimensions
50 x 196 x 21 mm
(2.0 x 7.7 x 0.9“)
Weight
74 g (2.4 oz.)
All rights are reserved. Reproduction in whole or
in part is prohibited without the written consent of
the copyright owner.
Liquid
Crystal
Display
Maximum
Immersion
Level
Recommended
Immersion
Level
ON/OFF
button
Operation
Advanced Functions
HOLD mode
The HOLD mode can be selected only if in setup
the HOLD parameter is set to “YES”. While in
measurement mode, press the ON/OFF button until
briefly “HOLD“ appears on the secondary display
and the reading will be frozen on the LCD. The HOLD
will toggle with the temperature value until the
ON/OFF button is pressed briefly again. The
“MEAS” message appears and the meter returns to
measure mode.
Hold on STABILITY mode
The STAB mode can be selected only if in setup the
HOLD parameter is set to “StAb”.
By pressing the ON/OFF button briefly and the
“WAIT” message appears on screen. The parameters
are hold on screen after stabilization only; before
stabilization done the stability indicator is present
on the LCD.
Press the ON/OFF button briefly to exit the STAB
mode and return to measure mode. The “MEAS”
message appears and the meter returns to measure
mode.
Taking another stable measurement is possible by
pressing the ON/OFF button briefly.
(If the “HOLD” message appears, then measured
stable values (EC and temp) are already retained
and hold on the display.)
Before using Hanna Instruments products, make
sure that they are entirely suitable for your specific
application and for the environment in which
they are used. Avoid touching the probe at all
times. Any variation introduced by the user to the
supplied equipment may degrade the instrument’s
performance. Do not use or store the instrument in
hazardous environments.
Recommendations for Users
To enter calibration mode
Press and hold down the ON/OFF button until “OFF“
is replaced by “CAL.“ Release the button.
To enter setup mode
While in measurement mode, remove the battery
cap and hold the Setup button for 1 second. The
meter will enter in setup mode.
Meter Setup
While in measurement mode, remove the battery
cover. Press Setup button located on the side of the
battery in the battery compartment. The meter will
enter in setup mode.
Press and hold the ON/OFF button to move through
setup parameters. Change option by pressing
ON/OFF button briefly. The default settings are:
“EC UNIT” - mS/cm, “TEMP” measure unit - °C,
“AOFF” - 8 min, “HOLD” functionality - disabled
“no“. After Hold, the meter returns to measurement
mode.
