Apogee Instruments S2-112 Owner's Manual - Page 5
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SENSOR MODELS
This manual covers the analog output models S2-111 and S2-112 (in bold below). Digital models are covered in
their respective manuals.
Model
S2-111
S2-112
S2-411
S2-412
Signal
Measures red and NIR irradiance (upward-looking) for
Voltage
Measures red and NIR radiance (downward-looking) for
Voltage
Measures red and NIR irradiance (upward-looking) for NDVI
SDI-12
Measures red and NIR radiance (downward-looking) for
SDI-12
Description
NDVI
NDVI
NDVI
An upward-looking (S2-111) sensor's model number
and serial number are located on the bottom of the
sensor. If the manufacturing date of a specific
sensor is required, please contact Apogee
Instruments with the serial number of the sensor.
A downward-looking (S2-112) sensor's model
number and serial number are located near the
connector on the sensor cable. If the manufacturing
date of a specific sensor is required, please contact
Apogee Instruments with the serial number of the
sensor.