Sutron Corporation X-Link Operations & Maintenance Manual, Rev 1.63 5/24/2016 pg. 77
If both Equations and Slope and Offset are used, Slope and Offset are applied
after the equation is processed.
7.1.3.6.
Referencing other measurements
If you are setting up an equation that references another measurement, set the
measurement type to meta, and make sure the measurement time and interval
are the same as the referenced measurement.
For example, if you wanted to trigger a sampler via the digital output when a
conductivity sensor reading exceeded 80, do the following:
1.
Setup measurement M1 to collect data from the conductivity sensor.
2.
Setup measurement M2 as a Meta measurement, with the Meta Index
set to 1 in order to reference M1. This ensures that M2 will wait for M1
to complete before producing a result. Make sure the schedule for M1
and M2 is the same.
3.
Setup the equation of M2 to PULSE12(M1>80, 2000). That will cause X-
Link to pulse DOUT for 2 seconds whenever the conductivity sensor
exceeds 80.
7.1.4.
Input Settings
7.1.4.1.
Measurement Type
The
Measurement Type
setting will determine what kind of measurement is
made. Each of the different types will unlock other settings. For example,
choosing
Analog
as the
Measurement Type
will unlock the
Analog Type
setting.
The available
Measurement Type
options are
Precip Accumulation
Precip Rate
SDI-12
Analog
Battery Voltage
Wind
Digital
Meta
Manual Entry
Internal Temp
Accubar Pressure
Accubar Temperature
Seametrics Flow
Seametrics Rate
