User Manual

SENSOR MODELS
This manual covers quantum sensor models SQ-214/SQ-224 that provide a current output. Additional models are
covered in their respective manuals. Sensor model number and serial number are located near the pigtail leads on
the sensor cable. If you need the manufacturing date of your sensor, please contact Apogee Instruments with the
serial number of your sensor.
Model
Signal
Calibration
SQ-214
4-20 mA
Sunlight
SQ-224
4-20 mA
Electric light
SQ-110
Self-powered
Sunlight
SQ-120
Self-powered
Electric light
SQ-212
0-2.5 V
Sunlight
SQ-222
0-2.5 V
Electric light
SQ-215
0-5 V
Sunlight
SQ-225
0-5 V
Electric light
SQ-311
Self-powered
Sunlight
SQ-321
Self-powered
Electric light
SQ-313
Self-powered
Sunlight
SQ-323
Self-powered
Electric light
SQ-316
Self-powered
Sunlight
SQ-326
Self-powered
Electric light
SQ-420
USB
Sunlight and Electric light
SQ-421
SDI-12
Sunlight and Electric light
SQ-422
Modbus
Sunlight and Electric light
Sensor model number and serial number
are located near the pigtail leads on the
sensor cable. If you need the
manufacturing date of your sensor, please
contact Apogee Instruments with the serial
number of your sensor.