Nahita 910/8 Manual De Instrucciones página 10

Ajuste de parámetros
El conductímetro Nahita 910/8 permite ajustar diversos parámetros (constante de la
célula de conductividad, factor de conversión TDS y coeficiente de temperatura) para
adaptarse a todo tipo de aplicaciones.
1. Ajuste de la constante de la célula de conductividad
Cada célula de conductividad tiene su propio valor de constante; este valor deberá ser
introducido en el equipo cada vez que se cambie de célula.
Tomando como ejemplo una célula de conductividad de constante 0.98, deberá proce-
der de la siguiente manera:
En el modo de medida Conductividad, presione el botón CONST (1.8). El equipo entra-
rá en la pantalla de ajuste de la constante de la célula.
Mediante el botón CONST (1.8) sitúe el cursor en el comando Const. Select.
Con los botones (1.5) seleccione el nivel en el que se sitúa el valor de constante de la
célula que va a ser utilizada. Existen 5 niveles posibles (0.01, 0.1, 1.0, 5.0 y 10.0); en el caso
del ejemplo, constante 0.98, seleccionaremos el nivel 1.0.
CONST.
1.0
SELECT
1.000
CONST.
ADJUST
COND
PRESS
Mediante el botón CONST (1.8) sitúe el cursor en el comando Const. Adjust.
Con los botones (1.5) ajuste el valor exacto de constante de la célula que va ser uti-
lizada (0.98 en el ejemplo).
CONST.
1.0
SELECT
0.980
CONST.
ADJUST
COND
PRESS
Pág. 10 Manual de instrucciones 50910080
CASTELLANO
Revisión 1 Junio-07
When selecting Salinity mode, SALT will be displayed
T= 25.0 ºC
Temperature of
solution
Te m p e r a t u r e
a:0.20
coefficient
- Once the measuring mode is selected, submerge the conductivity cell into the solution
to be analyzed and wait for a few seconds until the measured value is stably displayed.
The temperature of the solution will be also displayed.
Note: Once the temperature probe is connected to the equipment, the measurements will
be compensated to the temperature of reference according to the temperature coefficient
established. If the temperature probe is not connected, the value displayed will be the ori-
ginal value without being compensated. The reference temperature is 25 ºC for conducti-
vity and TDS determinations and 18 ºC for salinity determinations.
- If HOLD (1.6) is pressed during measurement, the measured value will be kept dis-
played indefinitely although the conductivity cell is taken out of the solution. To exit the
locking mode and return to the measuring mode press HOLD (1.6) again, CANCEL (1.3)
or MODE (1.13).
Parameter adjustment
Nahita conductivity meter 910/8 allows the adjustment of different parameters (con-
ductivity cell constant, TDS conversion factor and temperature coefficient) to adapt to any
kind of application.
1. Cell conductivity constant adjustment
Each conductivity cell presents its own constant value; this value must be introduced in
the equipment every time the conductivity cell is changed.
Taking as an example a conductivity cell with a constant value of 0.98, proceed as
follows:
In the Conductivity measuring mode, press CONST (1.8). The equipment will enter the
cell constant adjustment mode.
By pressing CONST (1.8) place the cursor on the command Const. Select.
With (1.5) select the level that corresponds to the constant value of the cell to be
used. There are 5 possible levels (0.01, 0.1, 1.0, 5.0 y 10.0); in the example, constant value
of 0.98, the selected level will be 1.0.
Version 1 June-07 Instruction manual 50910080
100.0
mg / L
Measurement
TDS
Page 27
ENGLISH