Hach NT3100sc User Manual page 15

Option
Sludge mode
Bypass
Output mode
Service reminder
Reminder interval Sets the time interval for maintenance reminders. Options: 1 day, 3 days, 1 week
Reset
configuration to
defaults
5.3 Calibration
5.3.1 Offset, factor and standard calibration
Use the offset and/or factor calibration option when the process water contains solids (e.g., activated
sludge). Use the standard calibration option for clean samples.
1. Go to the device menu as follows:
• SC200 and SC1000 Controllers—Go to the main menu, then select Sensor setup. If
applicable, select the sensor.
• SC4500 Controller and Claros interface—Select the tile of the device, then select Device
menu.
2. Select Calibration. If applicable, select the parameter.
3. Select an option.
Option Description
Offset Enters an offset value to adjust the standard calibration.
Options: –10% to +10% of the measuring range (default: 0). The measuring range is based
on the device type as specified by the measuring range in
Note: Use Offset to adjust the measurement values of the probe compared to laboratory
values when there are constant deviations of the measurement. The adjustment of Offset
lowers or raises the calibration curve of the probe.
Description
Sets the number of measurements done for each concentration calculation.
• On
• Off if a flow through unit is used
• Auto (default) sets the number of measurements automatically based on the sludge
condition
Note: Enable the sludge mode to increase the number of concentration measurements
when the probe measures in activated sludge. When the sludge mode is active, several
measurements are done to adjust for different sludge compositions.
Sets Bypass to No (default) or Yes. Select Yes when the probe is installed in a flow
through unit.
Note: When Bypass is set to Yes, the wiper out position is disabled. Remove the probe
from the flow through unit before a wiper replacement or test.
Sets the output mode during calibration or maintenance tasks:
• Hold—Keeps the last measured reading when the controller goes to the calibration or
maintenance menu.
• Active—Transmits the current reading. The controller corrects the reading with the
last saved calibration data.
• Set transfer—Transmits the transfer value entered in the system setup.
• Selection (default)—The controller asks for a value each time it goes into calibration
or maintenance menu.
Sets the time interval for service reminders. Options: off, 3, 6, 12 (default) or 24 months.
(default), 2, 3 or 4 weeks.
Sets the configuration settings back to the factory defaults.
Specifications on page 3.
English 15