Sondes
Section
2
YSI Incorporated
Drinking Water Monitoring Systems Operations Manual
2-90
7-( ) Multi SDI12
. Modifies the SDI12 protocol as follows: (1) No SDI12 service request will be issued.
(2) Break commands will not cause a measurement reading to be aborted. Normally, you should leave this
feature “off”.
8-( ) Full SDI12
. Enabling this feature forces full SDI-12 specification in order to pass the NR Systems
SDI-12 Verifier. Disabling this feature will allow the unit to be more fault tolerant and will save some
power. We recommend that you leave this feature “off”.
9-( ) Sample and Hold
. This feature is designed to be activated ONLY for studies in which your drinking
water sonde is attached to a YSI Process Monitor. When “Sample and Hold” is active, the 6500 display
and the SCADA output of the 6500 becomes equivalent to the internal memory of the sonde while an
Unattended study is running. In the Unattended mode, the sonde “sleeps” between periodic samples with
the interval between samples defined by the user. This method of operation results the extension of both
the sonde battery life (not important in 6500 applications) and the time between required sensor
maintenance procedures (which is important to 6500 drinking water applications). After activation of the
feature another entry will appear automatically which will allow you to input your sample interval which
defines how often data is transmitted to the 6500 display. This new sample interval will automatically
become the sample interval for the
Run|Discrete sample
mode of operation and you will not be able to
change the interval until
Sample and Hold
is deactivated. In addition, the interval in the Run|Unattended
sample
mode will also change to the Sample and Hold interval. In this case, however, you will be able to
change the Unattended Sample interval, but with the caveat that the
Sample and Hold interval
will also
change, i.e., the
Unattended sample interval
and the Sample and Hold interval MUST be synchronized
and the software assures that this will be the case.
REMEMBER: DO NOT ACTIVATE THIS FEATURE UNLESS (A) YOUR SONDE IS ATTACHED
TO A 6500 AND (B) YOU HAVE READ THE DETAILED DESCRIPTION OF THE FEATURE IN
APPENDIX G. USING YOUR DRINKING WATER SONDE WITH A 6500 PROCESS MONITOR
.
Select
3-Sensor
to display and change user-configurable constants as shown in the following display. Type
the appropriate number to change to these parameters.
NOTE:
The number of items on this menu depends greatly on the sensors that are available and enabled on
your sonde. Below we describe every possible item on this menu. Your sonde probably may not have
every item described below.
------------Advanced sensor-----------
1-TDS constant=0.65
2-Cl2 temp co %/C=2.5
7-Cl2 warm up sec=60
8-(*)Wait for Cl2
9-Wipes=1
A-Wipe int=1
B-SDI12-M/wipe=1
C-Turb temp co %/C=0.3
D-(*)Turb spike filter
E-Chl temp co %/C=0
Select option (0 for previous menu):
