TESTO 300 LL NEXT LEVEL User Manual

9 Performing the measurement
71
Edit values
All values that can be modified have a dotted underlining.
9.5.13 CO ambient
• Cigarette smoke influences the measurement by more than 50 ppm.
The breath of a smoker influences the measurement by about 5
ppm.
• When using an ambient CO probe, note that:
The direction of flow of the gas has an effect on the accuracy of
measurement. Frontal flow onto the sensor leads to higher
readings. The best measurement results are achieved when the
probe is moved gently backwards and forwards.
• When using the ambient CO probe and the flue gas probe, note
that:
The probe must be in the fresh air (CO-free) during the zeroing
phase.
For this type of measurement, the Mean value calculation option is
also available. See Mean value calculation section.

An ambient CO probe (0632 1272) must be connected.
1
Call up function: | CO Ambient
2
Start measurement: tap .

Reading is displayed.
3
End measurement: tap .
9.5.14 Tightness test 1
The tightness test 1 (using air or inert gas such as CO
2
or N
2
) is a tightness test
for pipes, including fittings, but without gas appliances and the relevant
regulating and safety devices. The tightness test 1 is carried out after a load test
has been successfully completed on newly laid gas pipes, or after renovation of
existing gas pipes, and is used for the acceptance of these pipes. It shows up
even the smallest leaks in gas pipes.
According to DVGW TRGI 2018 and ÖVGW G10, the stabilization time
and test time depend on the pipe volume.
- Pipe volume < 100 l: Adjustment time 10 min, test time 10 min.

TESTO 300 LL NEXT LEVEL Specifications

General

Brand	TESTO
Model	300 LL NEXT LEVEL
Category	Measuring Instruments
Language	English