METER VARIOS, Руководство пользователя

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22
OPERATION
2.7.3.1 SET UP AND LEVELING
Please follow the steps listed below to set up and level the HYPROP Balance.
1. Place the HYPROP Balance on a horizontal, vibration-free, solid surface where the
temperature remains fairly stable (e.g., away from air conditioner and heater vents, windows).
Ideally, this place is not used for other laboratory work during VARIOS measurements.
2. Adjust the Balance by turning the Balance adjusters on the legs of the Balance until the
level air bubble rests in the center of the level red circle ( Figure 23 ).
3. Connect the Balance to the power supply and to the computer via the included USB
cable and turn the Balance on ( Figure 23 ).
Bubble
level
VARIOS
Weight
calibration
knob
HYPROP
Balance
Legs with balance adjusters
Figure 23 Balance leg adjusters and bubble level
2.7.3.2 CALIBRATION
For precise measurements, the Balance has to be calibrated according to the local
conditions. It should be calibrated in the following circumstances:
• After the Balance has been set up.
• After the Balance has changed position.
• After a significant room or environment temperature change.
• After the Balance has gone for long periods without being used.
• If the Balance is generating inaccurate values.
The Balance is equipped with an internal calibration weight. The calibration process should
run when there is no wind or vibration near the Balance (i.e., wind and vibration may result in
an unsuccessful calibration).