Riken Keiki TP-70DGII, Operating Manual

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5. How to Operate 5-3. How to activate the gas detector
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<Start-up Procedures (approximately 25 seconds for system check of the gas detector and alarm
deactivation)>
Power On
↓
PW A1 A2 F LCD
Initial clear
● ○ ○ ○
----
WARM UP
↓ ↓
Gas Specifications Display
● ○ ○ ○
15.0 ppm
COS
↓ ↓
Detection mode
● ○ ○ ○ 0.0 ppm
COS
CAUTION

Do not turn off the gas detector during the initial clear. The gas detector is reading the sensor
memory during the initial clear.

When the power is turned off to perform replacement or maintenance of parts, the gas detector
needs to be warmed up for a specified period which is determined depending on the length of
unpowered time.

During the warm-up, the alarm activation and output signals are unstable. Provide a prior
notification to the related sections so that they can prepare for false abnormalities.

After the warm-up is completed, check that the reading on the flow rate indicator corresponds to
the specified flow rate, and then perform a calibration.