YOKOGAWA TB830D, User Manual, Page: 50 / 85

<6. OPERATION>
6-1
IM 12E04B40-02EN 1st Edition : Mar. 08, 2023-00
6. OPERATION
6.1 Turbidity measurement
When Power Supply is set to ON with a sample passing through the Flow cell, the turbidity
detector is activated in a measurement mode, and turbidity is continuously measured.
Regular maintenance enables the measurement to be performed stably. For details about
maintenance and troubleshooting, see “8. MAINTENANCE” and “9. TROUBLESHOOTING”.
6.2 Air denoising
If the Air denoising is set to ON, the protrusion of the measured value caused by the bubble is
deleted. “Check” status icon appears on the main screen during air denoising hold time Contact
output doesn’t work by this function. Refer to “4.1.5 Air denoising setting” for more information
on Air denoising operation and parameter setup.
6.3 When Water Supply is Cut Off
If the sample or tap water (cleaning water or zero water) stops, normal measurement cannot be
performed. Since the TB830D cannot detect whether the water supply is stopped or not, a check
water supply lines periodically.
6.4 Automatic cleaning/Automatic zero
calibration Operation
When the sampling system is properly installed and Automatic cleaning/Automatic zero
calibration is properly set up on the converter setting, Automatic cleaning/Automatic zero
calibration starts at a scheduled time during a regular operation in a measurement mode
For more information on operation scheduling, see “4.5 Automatic cleaning/Automatic zero
calibration setting” and “Appendix Automatic cleaning/Automatic zero calibration Sequence”.
You can see when the next automated wash or automated calibration starts from the sensor
detail screen. If the scheduled auto sequence date has already passed or is a past date,
Automatic cleaning/Automatic zero calibration does not operate.
Refer to FLXA402T converter Operators (IM 12A01G01-03JA) for converter display and mA-
output display when Automatic cleaning and Automatic zero calibration are running.
During Automatic cleaning/Automatic zero calibration, you cannot turn on the maintenance
mode. You cannot enter the calibration menu or the setting menu, either.
6.5 Stop and restarting operation
To stop operation, stop supplying Power. If the instrument out of operation for a long period, stop
supplying sample and wash the Flow cell and keep it empty or keep zero water running.
When restarting operation after long-term shutdown, perform maintenance referring to
“8. MAINTENANCE” and then prepare for operation described in “3. PREPARATION for
OPERATION”.