IM 253401-01E
3-2
3.2
Installing the Instrument
Installation Conditions
The instrument must be installed in a place where the following conditions are met.
Ambient temperature and humidity
Ambient temperature: 5 to 40˚C
Ambient humidity: 20 to 80% RH (no condensation)
Horizontal position
The instrument must be installed horizontally. A non-horizontal or inclining position can
impede proper measurement of the instrument.
Well-ventilated location
Vent holes are provided on the top and bottom of the instrument. To prevent rise in internal
temperature, do not block these vent holes.
In case you removed the feet for rack-mounting the instrument, make sure to keep a space of at
least 20mm as not to block the vent holes.
Never install the instrument in any of the following places
•
In direct sunlight or near heat sources;
•
Near noise sources such as high voltage equipment or power lines ;
•
Where an excessive amount of soot, steam, dust or corrosive gases is present;
•
Where the level of mechanical vibration is high;
•
Near magnetic field sources;
•
In an unstable place.
Note
• To ensure high measurement accuracy, the instrument should only be used under the following
conditions.
Ambient temperature: 23
±
5˚C
Ambient humidity: 30 to 75% RH (no condensation)
When using the instrument in the temperature ranges of 5 to 18 or 28 to 40˚C, add the temperature
coefficient to the accuracy as specified in chapter 15 “Specifications”.
• If the ambient humidity of the installation site is 30% or below, use an anti-static mat to prevent
generation of static electricity.
• Internal condensation may occur if the instrument is moved to another place where both ambient
temperature and humidity are higher, or if the room temperature changes rapidly. In such cases
acclimatize the instrument to the new environment for at least one hour before starting operation.
Installation Position
Desktop
Place the instrument in a horizontal position or tilted using the stand, as shown below.
• WT110 (253401)
When installing using the handle, verify that the handle is in a fixed position. While pulling the
handle approx. 2 to 3mm from the turning axes on both side, slowly turn the handle until it slips
into the fixed position.
1
2
3
4
5
6
7
8
1
3
Turning axis
Fixed positions of the handle
(We recommend the positions 1, 3, 5, or 8. When
using no 4, don´t put any weight on the instrument.)
Turn the stands after
pulling them approx.
2-3 mm on both sides.
• WT130 (253502, 253503)
