yellow jacket CA502, Руководство пользователя и по обслуживанию

Страница: 25 / 68

25
10.0 MEASUREMENTS
10.1 Menu → Measurements
SUB MENU FUNCTION
Comb.
analysis
The combustion analysis menu, sets the different reference parameters of the instrument to
perform the combustion analysis.
SEE CHAPTER 10.2
Draft
The DRAFT menu gives access to the stack draft measurement.
NOTE: The measurement may not be accurate due to condensation inside the gas
probe. Should you notice an inaccurate or unstable reading on the instrument, it is
advisable to disconnect the gas probe from the instrument itself, and purge pipes by
blowing with a compressor. In order to be sure there is no humidity, it is suggested to
perform the measurement by means of the transparent rubber pipe supplied as
optional.
SEE CHAPTER 10.3
CO air
This menu lets the user measure the CO value present in the environment, with the scope of
checking the personal safety conditions of a specific working environment. The instrument
leaves our factory with the following pre - set threshold values:
COmax : 9 ppm Recommended exposure limit (REL) for 24 - hr exposure in residential
applications. Maximum levels are stipulated by the National Institute for
Occupational Safety and Health (NIOSH), equivalent to 40 mg/m
3
and calculated
as an 8 - hour Time - Weighted Average (TWA).
It is necessary to perform the autozero in the clean air. This will ensure
the ambient CO measurement is correct. It is advisable to turn on the
CA502 and wait for the autozero completion outside the area where the
test is being performed.
SEE CHAPTER 10.4
Pressure
Through the use of the optional Manometer Hose ( 68620 ), it is possible to measure a
pressure value within the range stated in the technical features (connect the pipe to P+
input).
SEE CHAPTER 10.5
15/06/18 10:00
MEASUREMENTS
► Comb. analysis
Draft
CO air
Pressure
KEY FUNCTION
Returns to the previous screen.
Selects the available parameters.
Enters in the selected parameter setting.
ESC
>
>
OK