Owner's manual

ADS Environmental Services ADS Spider User Manual
Page 108
Appendix I: SDI-12 Operation (if SDI-12
interface is installed)
SDI-12 Sensor Preparation
Do not connect your SDI-12 sensor to the Spider at this time.
Refer to your SDI-12 sensor Instruction Manual and set up the sensor
as follows:
 Enable your sensor’s SDI-12 Interface
 Assign SDI-12 address 0 to the sensor
 Select a suitable SDI-12 delay (warm-up) time and record it
for future use
 Determine the number of parameters provided by the sensor
and the order in which they are given. Once again, record
this information for future use.
For example, assume that you are using a popular water quality
instrument providing eight parameters in this order: temperature, pH,
specific conductivity, salinity, ORP, depth, turbidity, and LDO. You
decide to use a delay (warm-up) period of 30 seconds.
SDI-12 Physical Connection
The SDI-12 interface is a separate electronics module. It connects to
the Spider LC via two cables: a ribbon cable and an integral power
cable. The ribbon cable connects to the Spider’s AUX2 port, and the
power cable connects to the Battery Connector. Following is an
illustration of a typical connection: