Integrating in Real-Time Integration Mode or Real-Time Continuous 
Integration Mode
•  Starting Integration
21.
 Press START/STOP. The integration indicator changes to Ready (displayed in 
yellow), and the WT500 is ready to integrate. When the scheduled integration 
start time is reached, the integration indicator changes to Start (displayed in 
green), and integration starts.
•
  Holding Integration
22.
 Press HOLD. The HOLD key lights, and the numeric data display is held. 
Integration continues.
•
  Un-Holding
23.
 Press HOLD when the display is held. The HOLD key is no longer lighted, and 
the numeric data display is updated. While the display is held, you can execute a 
single measurement by pressing SHIFT+HOLD (SINGLE) to update the display.
•
  Stopping Integration
24.
 Press START/STOP. The integration indicator changes to Stop (displayed in red). 
The integration time and integrated value are held. If you press START/STOP 
before the scheduled integration end time is reached and then press START/
STOP again, integration will restart and continue until the scheduled integration 
end time is reached.
In real-time integration mode, once the scheduled integration end time is reached, the 
integration indicator switches from Start, displayed in green, to Stop, displayed in red. The 
integration time and integrated value are held.
In real-time continuous integration mode, once the integration timer expires, the integration 
time and integrated value are automatically reset, and integration continues until you press 
START/STOP or until the scheduled integration end time is reached.
•  Resetting Integration
25.
 Press SHIFT+START/STOP (RESET). The integration indicator changes to 
Reset, the integration time and integrated value are reset, and their displays 
change to “-----------” (no data).
5.9  Setting Real-Time Integration or Real-Time Continuous Integration