Hach D3433B8.99, Руководство пользователя

Страница: 9 / 446

Table 1 Sensors connected to conductivity module (continued)
Option Description
Filter Sets a time constant to increase signal stability. The time constant calculates the average
value during a specified time—0 (no effect, default) to 200 seconds (average of signal
value for 200 seconds). The filter increases the time for the sensor signal to respond to
actual changes in the process.
Data logger interval Sets the time interval for sensor and temperature measurement storage in the data log—
5, 30 seconds or 1, 2, 5, 10, 15 (default), 30, 60 minutes
Reset to default
values Sets the Settings menu to the factory default settings and resets the counters. All sensor
information is lost.
Table 2 Sensors connected to sc digital gateway
Option Description
Name Changes the name that corresponds to the sensor on the top of the measure screen. The
name is limited to 12 characters in any combination of letters, numbers, spaces or
punctuation.
Measurement type Changes the measured parameter to Conductivity (default), Resistivity, TDS (total
dissolved solids) or Salinity. When the parameter is changed, all other configured
settings are reset to the default values.
Unit Changes the units for the selected measurement—conductivity: μS/cm (default) or
mS/cm; resistivity: MΩ (default) or kΩ; TDS: ppm (default) or ppb; salinity:
0
/
00
(ppt)
Temperature Sets the temperature units to °C (default) or °F.
Format Changes the number of decimal places that are shown on the measurement screen to
X.XXX, XX.XX, XXX.X or XXXX (default).
Filter Sets a time constant to increase signal stability. The time constant calculates the average
value during a specified time—0 (no effect, default) to 60 seconds (average of signal
value for 60 seconds). The filter increases the time for the sensor signal to respond to
actual changes in the process.
Data logger interval Sets the time interval for sensor and temperature measurement storage in the data log—
Disabled, 5, 10, 15, 30 seconds, 1, 5, 10, 15 (default), 30 minutes or 1, 2, 6, 12 hours
TDS (total dissolved
solids) 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 User
defined entries (enter a factor between 0.01 and 99.99 ppm/µS, default: 0.492 ppm/µS).
Cell constant
parameters Select the cell constant K.—Sets the cell constant range to 0.01, 0.05, 0.10, 0.5 (default),
1.0 HACH, 1.0 Polymetron, 5.00 or 10.0.
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.
T-compensation Adds a temperature-dependent correction to the measured value—Linear (default:
2.0%/°C, 25 °C), Ammonia, Natural water, User compensation table or None.
When User compensation table is selected, the user can enter x,y (%/°C, °C) points in
ascending order.
Note: The Natural water option is not available when the Measurement type setting is set to TDS.
Temperature sensor Sets the temperature element for automatic temperature compensation to Manual,
PT100 or PT1000 (default). If no element is used, set to Manual and set a value for
temperature compensation (default: 25 °C).
When Temperature sensor is set to PT100 or PT1000, refer to
Adjust the T-factor for
non-standard cable lengths on page 10 to set the Factor selection setting.
Note: If Temperature sensor is set to Manual and the sensor is replaced or the sensor days are reset,
the Temperature sensor setting automatically changes back to the default setting (PT1000).
English 9