PVS5120-Series Portable Samplers
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8.2.3.1 Wiring for SDI-12 Control
TABLE 8-2. SDI-12 Wiring (PVS5120CBL-L Cable)
Wire
Description
Connection
Green SDI-12/Pulse Out
Datalogger control port (C1, C3, C5, or C7)
Blue
Pulse Start
Not used
Purple
Ground
Datalogger G
Gr
e
y
Ground
Connects to one lead on the optional
water detection probe
Yellow
Water Sensor
Connects to one lead on the optional
water detection probe
White
RS-485 A–
Not used
Black
RS-485 B+
Not used
Red
Fault
Not used
Brown
RG
Datalogger’s
⏚
8.2.3.2 SDI-12 Programming
In
CRBasic
, use the
SDI12Recorder()
instruction to program the datalogger to
control the sampler. This instruction sends a request to the sensor to make a
measurement and then retrieves the measurement from the sensor. The
sampler returns the following four status values after it has completed the
sampling procedure and the distribution arm has advanced as necessary.
1.
Sample bottle number:
Bottle number that the sample is deposited in (1
to 24).
2.
Sample number:
The number of samples collected for this bottle.
3.
Response code:
Numeric code ranging from 0 to 8 that represents
different conditions (TABLE
4.
Sampler battery voltage:
Returns the battery voltage just before that
sample was collected.
Summary of Contents for PVS5120 Series
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Page 70: ...Appendix A Sample Transport Velocity A 2...
Page 78: ...Appendix B Example Programs B 8...
Page 86: ...Appendix C Monitoring Sampler Status via RS 485 C 8...
Page 96: ...Appendix G Generic Modbus Control G 4...
Page 100: ...Appendix H ISO5667 Conformity H 4...
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