Sample Data Collection At The Rdu; Sample Data Collection Using A Sampling Switch - Satron Instruments VC Quick Start Manual

Sample Data Collection at the RDU

To ensure an accurate time correlation, use the following procedure using the Remote Display Unit (RDU):
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Sample Data Collection Using a Sampling Switch

This is best performed by two people. When the sample person is ready to take a sample, the other person
activates the switch by moving it to the sampling position. The Remote Display Unit (RDU) inside the
enclosure will flash "SAMPLING". The person operating the sample valve then extracts the sample from the
process into a container. After the sample has filled the container the switch person turns the switch
immediately back to its original position trying to time the switch movement with the close of the sample
valve. The RDU will display the sample number (SAMPL 01) and a message that the sample was "OK".
It is important to make the sampling time as short as possible because the transmitter is averaging all the
readings while the switch is activated. After the sample is complete, mark with the date/time and the
sample number that appears to the RDU window. Also mark the primary reason for the sample. For example,
if the transmitter measures both consistency and kappa, note that sample 2 was for consistency and
samples 3 through 6 are for kappa etc.
Consider setting up a spreadsheet for recording the lab values. The key is recording the correct time for the
sample. When the sample data is extracted from the .sif file (see Creating a .sif File section) the samples
numbers do not appear, therefore the date and time are used to correlate the lab data to the internally
stored averages.
In some cases, the same sample may be used for consistency and a complex variable. Enter both lab values
with the same time stamp in the Excel spreadsheet.
This spreadsheet along with the sif-file that is extracted from the transmitter should be sent to Satron for
analysis. Satron will send back the calibration coefficients to insert into the VC multichannel for this
application.
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Starting at the default PV display value; Press the ESC button.
Use the UP/DOWN arrows to move to the New Sample sub-menu and
press ENTER.
The START? appears in the display. When you are ready to collect the
sample press the ENTER Key.
The display will blink the Sampling message during the sampling period.
Collect the sample as quickly as possible and after the sample is
complete, press the ENTER key. The sample time stamp, average, min and
max values will scroll across the display.
The SAVE? will appear in the display. Press the ENTER key to store the
event or ESC to cancel.
An OK message and the Sample Number will appear. Record the Sample
number, time stamp and Average value as a reference. Internally the
sample number is automatically incremented by the transmitter each time
a new sample is saved.
The display will automatically return to the New Sample sub-menu. Press
the ESC key until the PV reading in the main menu is displayed. After the
lab testing is completed, record the lab data with the appropriate Sample
Number and time stamp in an Excel spreadsheet.