IV
If the vacuum gauge is to be shipped to other site, repack it in the
same way as on delivery. If the gauge is shipped bare, it may be
damaged.
Repacking for transfer
The sensor for this product contains strong magnetic material.
Therefore, please seal the interior of the packaging material with
metal plate (more than 0.5mm thickness).
Warning for Air transportation Packaging
The magnetic force from the item packaged by above method is less
than .418A/m(0.00525gauss) at 4.6m distance from any given point, or
less than 0.159A/m(0.002gauss) at 2.1m distance from any given point,
qualifying IATA packaging standard 902 or UN-2807.
Handle the internal electrode with clean gloves. If the internal
electrode is stained with oil or contaminant, the pressure indication
may be affected by outgas.
Wear clean gloves.
Such an impact may cause leak. Do not bend the anode pin nor give
an impact to the black glass portion.
Impact to the anode pin and glass part.
Polishing can cause leak. Polish the pin using care not to apply load
on the glass portion.
Do not polish the glass portion of the anode.
The pressure indication may be abnormal (higher than actual or no
change of indication) or components may fail if the insulation
resistance of the anode is not higher than 10,000 M
Ω
.
Insulation resistance of anode
After reassembly, make sure that the anode pin is at the center of the
magnetic pole 2. There is a possibility of contact with the magnetic pole
or low pressure indication.
Check center axis of anode
These can cause leak. Make sure that the O-rings and the O-ring
groove are free of scars and dust.
Scar and dust on O-ring and O-ring groove
After cleaning, dry up electrode parts. If they are not dry, components
may be damaged by poor insulation.
Dry parts
Do not touch the sensor head and anode during insulation resistance
check. If the anode and sensor head body are shorted, a high voltage of
2.6 V DC will be applied to the sensor head.
Do not touch the sensor head
When turning on the high voltage to this gauge under atmospheric
pressure, avoid a combustible gas atmosphere. If a higher voltage of
about 2.6 kV DC is applied, sparks will be produced and may cause
fire.
Do not conduct inspection in combustible gas atmosphere.
Aluminum electrolytic capacitor is used in the electric circuit of this
instrument. The life of the aluminum electrolytic capacitor becomes
shorter with increase of the ambient temperature, To prevent devices
from being damaged, it is recommended to conduct maintenance about
once every 3 years.
Maintenance
Summary of Contents for G-Tran BMR2
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