VPG BHL Nobel AST 3, Operating Instructions, Quick Installation

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Analogue Signal Transmitter AST 3
7
Quick set-up, calibration
General
Set-up of all parameters in AST 3 can be performed from the programme deltaCOM
by serial communication. For AST 3P set-up can also be performed from the panel of
the module, for example the ‘Quick set-up’ of certain parameters described in this
section. To make a similar set-up for AST 3B, the ‘Quick set-up’ parameters can be
selected from the tabs ‘General’, Analogue output’ and ‘Calibration’ in deltaCOM.
Calibration is essential for the instrument to give correct measurement results.
Two calibration methods are available in the ‘Quick set-up’:
Data sheet calibration, for calibration when load cell data is available and
the installation is free from disturbing mechanical forces.
Dead weight calibration, normally the most accurate calibration method,
where known weights are used to give well defined loads on the scale.
Before selection of calibration method, the value of some common instrument
parameters must be set.
All parameter values from the calibration should be noted in the set-up list,
see Appendix 1. These values are useful later, if the instrument must be replaced.
Common parameters
These parameters are defining: the language, measurement unit and resolution
for the instrument and also the capacity and signal type for the analogue output.
Set-up
1. Access ‘Quick set-up’
At normal operation AST 3P displays the actual measurement value and the module
address. Status for the internal relays (R1/R2) in use is also displayed.
123.4 kg 001
R1:On R2:On
Press and hold the ESCAPE key for 2 seconds.
Main menu
Quick set-up
2 seconds
This switches the instrument into Set-up mode, displaying the main menu
for ‘Quick set-up’.
As AST 3 is in Set-up mode, normal measuring functions are interrupted!