Noise Prevention; Storage Location; Maintenance - Nagano Keiki GC31 Instruction Manual

6. Noise prevention

 Power line
If noise remains in the power line, it may cause malfunctions such as fluctuation of display. Take
care not to tangle the AD/DC power line. Also, use a stable power source that has high noise
rejection ratio and will not cause ripple voltage.
 Output routing
In the open collector output circuit, since output line and internal circuit are connected directly,
pay attention not to tangle lines. Also, m ake connection cables as short as possible.
 Induction noise
Induction noise from outside sources may cause malfunctions. In this case, separate the device
from the noise source, change direction, and use a magnetic shield or an electrostatic shield.
 Lightning surge
Lightning surge may cause malfunctions. Please connect this unit to indoor distribution network
which is free from influence of lightning surge.
Noise issues are complicated and many of them cannot be solved easily. If measured values
often fluctuate or differ, they may be affected by noise In this case, take noise prevention
measures described above.

7. Storage location

Do not store this device in the following places as it may cause malfunction and
damage.
 Any place that water can reach.
 Any place where there can be negative influence of atmosphere, temperature,
Caution
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humidity, sunlight, dust, salt or sulphuric air.
 Any places where there is vibration or shock (including during transportation).
 Any place where chemicals are stored or where there are releases of gas.
 In direct sunlight or inside a hot vehicle.

8. Maintenance

In this unit, there are no moving parts in the sensing element and circuit components so
basically there will be no maladjustment. However, depending on the use condition, aging may
occur so biannual regular check is recommended. For the zero point adjustment, perform it
following the instructions of zero point adjustment herein.
Since plastic molding material is used for the case part of this device, make sure not to touch it
with soldering iron, etc. Also, chemicals may have an adverse effect on the case so ensure
that none come in contact.
TY-GC31-004A 13/24
Rev.B