28
PARAMETER COEFFICIENTS
EC Reference Temperature (HI98194, HI98195 only)
This value is used for temperature compensated conductivity. All EC
measurements will be referenced to the conductivity of a sample at
this temperature. Press the softkey to select the desired option; 20 °C
or at 25 °C.
The default value is 25 °C.
EC Temperature Coefficient (HI98194, HI98195 only)
The temperature coefficient Beta (
ß
) is defined by the following
equation (using 25 °C as an example): EC
25
=EC
x
/(1+
ß
(T
x
‑25))
Beta is a function of the solution being measured. For freshwater
samples Beta is approximately 1.90%/°C. If the actual temperature
coefficient of your sample is known, press
Modify
to enter the value.
To confirm press
Accept
. The value can be within 0.00 and 6.00%/°C.
The default value is
1.90%/°C.
TDS Factor (HI98194, HI98195 only)
TDS stands for total dissolved solids, and it is a calculated value
based on the conductivity of the solution (TDS = factor x EC
25
). The
TDS conversion factor can be set from 0.00 to 1.00. A typical TDS
factor for strong ionic solutions is 0.50, while for weak ionic solutions
(e.g. fertilizers) is 0.70.
Press
Modify
to enter the value, press
Accept
to confirm.
The default
value is 0.50.
Salinity (HI98196 only)
This value is used to calculate the D.O. concentration where the EC
sensor is not available for the meter. To set the value, press
Modify
and enter the desired value between 00.00 to 70.00 PSU. Press
Accept
to save the modification.
Averaging
Averaging is a software filter to minimize sensor noise and provide
more stable readings. Averaging is particularly useful to get a rep‑
resentative reading of the “average” value from flowing water.
Averaging will affect all measurements.
www.
.com
information@itm.com
1.800.561.8187
