Hydronix Hydro-View HV02, Руководство пользователя

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INTRODUCTION
HYDRO-VIEW USER GUIDE
D0022
REV 1.06
11
A batch weighing system
A typical example of a batch weighing system involving a moisture measurement point (in
this case a Hydro-Probe) at the output of the storage bin is shown in Figure 1.
The Hydro-View is interfaced as follows...
⇒
Feed a signal to a digital input on the Hydro-View indicating when the gate is open.
This signal can be derived either from a limit switch on the gate or from an auxiliary
contact on the
Open gate
output in the batch control system, whichever is most
convenient. Configure this input as an Average/Hold input (see
Input 1 / Input 2
use
on page 36).
⇒
Connect the Hydro-Probe sensor to the Hydro-View in the standard way.
⇒
Connect the analogue output to the batch computer and set the output variable to
AVERAGE. The output range should be set according to the working moisture
range of the material; for most concrete batch applications, the default values of 0
and 20% are appropriate.
Refer to
Installation
later in this document for wiring details.
You may be tempted to short-cut this approach in some of the ways described below - if
you do this, you are unlikely to achieve satisfactory results and Hydronix cannot provide
technical support under these circumstances.
Recommendations for best performance
A
LWAYS
make use of the average/hold facility. Even if your batch computer is computing
the average moisture value in the batch, you will still need to display the average unscaled
•
Figure 1 - Batch weighing example