H34.0.01.6C-11
Operating Manual GMH 3430
page 5 of 10
6
Selection of Measuring Unit
The device allows a choice between the various measuring units, i.e. conductivity, resistivity of fluid, filtrate dry resi-
due ('Total Disolved Solids') and salinity. To do so press
-key for a short time. The measuring value of the current
measuring unit will be shown in the upper line of the display, the corresponding device will be indicated by an arrow
at the top corner of the display. Simultaneously, the temperature is shown in the lower line of the display with all
measuring units.
7
Change Between Measuring Range Resolutions
For measuring conductivity you have a choice between four different measuring range resolutions:
0.0 ... 200.0
S/cm
0 ...
2000
S/cm
0.00 ... 20.00 mS/cm
0.0 ... 200.0 mS/cm
If Auto-Range is switched on the GMH3430 will automatically choose the optimum resolution. If Auto-Range is
switched off you can change to the next measuring range resolution by pressing the
-key for a short time.
In case you have already been working in the highest resolution range, pressing of the key will bring you down to the
lowest measuring range resolution. The corresponding measuring unit is shown by an arrow in the top right-hand
corner of the display.
To activate/deactivate Auto-Range press
-key press for 2 seconds.
The Auto-Range function set will be shown in the display as long as the
-key is being
pressed.
8
Salinity measuring:
The salinity (salt content) of
seawater can be determined in the measuring mode „SAL“
(basis: International Oceanographic Tables; IOT)
The salinity of standard-
seawater is 35 ‰ ( 35g salt per 1kg seawater).
The values are displayed in ‰ (g/kg).
9
Display at reboot
After the device is switched on it will display some information about the current configuration.
There are the following displays:
segment test
set scale correction of measuring cell
set compensation coefficient
(only displayed if t.Cor = lin)
set temperature offset
(not displayed if OFFS = off)
setting for Autorange
Then 0 is displayed until the first valid measuring value is available.
S
Logg
%/K
AL
mS
nLF
SAL
mg/l
1/cm
Lin
kOhm
