Hach 25M3A2000-100 Manual De Instrucciones página 8

4.2 Configure the sensor
Use the Settings menu to enter a sensor name and select the type of sensor. Change options for
measurement, calibration, data handling and storage.
1. Select the main menu icon, then select Devices. A list of all of the available devices shows.
2. Select the sensor and select Device menu > Settings.
3. Select an option.
• For sensors connected to a conductivity module, refer to
• For sensors connected to an sc digital gateway, refer to
Option
Name
Sensor S/N
Measurement type
Format
Unit
Temperature
T-compensation
TDS (total dissolved
solids)
Cell constant
parameters
Cable length
Temperature
element
8 English
Table 1 Sensors connected to conductivity module
Description
Changes the name that corresponds to the sensor on the top of the measurement
screen. The name is limited to 16 characters in any combination of letters, numbers,
spaces or punctuation.
Lets the user enter the serial number of the sensor. The serial number is limited to
16 characters in any combination of letters, numbers, spaces or punctuation.
Changes the measured parameter to Conductivity (default), TDS (total dissolved solids),
Salinity or Resistivity. When the parameter is changed, all other configured settings are
reset to the default values.
Changes the number of decimal places that are shown on the measurement screen to
Auto (default), X.XXX, XX.XX, XXX.X or XXXX. When Auto is selected, the decimal
places automatically change.
Changes the units for the selected measurement—conductivity: μS/cm (default), mS/cm,
μS/m, mS/m or S/m; resistivity: MΩ (default), kΩ, Ωcm or Ωm; TDS: ppm (default) or ppb;
0
salinity: / (ppt)
00
Sets the temperature units to °C (default) or °F.
Adds a temperature-dependent correction to the measured value—Linear (default:
2.0%/°C, 25 °C), Ammonia, Temperature compensation table, None, Natural water or
Pure water.
When Temperature compensation table is selected, the user can enter x,y (%/°C, °C)
points in ascending order.
Note: The Natural water and Pure water options are not available when the Measurement type setting is
set to TDS.
Note: The TDS (total dissolved solids) setting is only available when the Measurement type setting is
set to TDS.
Sets the factor that is used to convert conductivity to TDS—NaCl (default) or Custom
(enter a factor between 0.01 and 99.99 ppm/µS, default: 0.49 ppm/µS).
Select the cell constant K.—Sets the cell constant range to 0.05, 0.5, 1.0 (default), 5.00,
10.0, or 0.01, 0.1, 1.0 Polymetron.
Cell constant—Enters the actual certified K value from the label on the sensor cable.
When the certified K value is entered, the calibration curve is defined.
Sets the actual length of the sensor cable to improve measurement accuracy (default:
20 ft (Polymetron sensors default: 5 ft)).
Sets the temperature element for automatic temperature compensation to PT100,
PT1000 (default) or Manual. If no element is used, set to Manual and set a value for
temperature compensation (default: 25 °C).
When Temperature element is set to PT100 or PT1000, refer to
non-standard cable lengths
Note: If Temperature element is set to Manual and the sensor is replaced or the sensor days are reset,
Temperature element automatically changes back to the default setting (PT1000).
Table
Table
on page 10 to set the Temperature factor setting.
1.
2.
Adjust the T-factor for