3
1 General information
1.4
General safety instructions
z
The
MiniLec 4
instrument is constructed in accordance with the
European Ex protection standards CENELEC and ATEX 100a.
z
The instrument may only be used with the following gasses:
– Air
–
Natural gas
– Methane (CH
4
)
–
Propane (C
3
H
8
)
–
Butane (C
4
H
10
)
– Town gas (TGas)
–
Hydrogen (H
2
)
Note:
The instrument is prepared ex works for detecting
methane (CH
4
) as test gas. Measurements with air
or natural gas are also carried out with this setting.
It is not required to change the type of gas.
z
It is required to use supply tubes with hydrophobic filters to
protect the flow rate sensor (applies to Test of working order
[i. e. serviceability determinations] and Main test).
z
The maximum operating pressure must not be exceeded:
– Test mode Test of working order: max. 200 mbar
– Test mode Main test:
max. 200 mbar
– Test mode Preliminary test:
max. 2 bar
– Test mode Regulator inspection max. 200 mbar
z
The permissible operating temperature is -10 °C to +40 °C.
z
The permissible storage temperature is -20 °C to +70 °C.
z
The permissible humidity is 0% RH to 90% RH, non-condens
-
ing.
z
The permissible ambient pressure is 860 hPa to 1100 hPa.
