Comparison Chart

Output Opons
ORIGINAL QUANTUM SENSORS |
SQ-100, SQ-200, & SQ-300 Series
SQ-100
Specicaons
Power Supply Self-powered
3.3 to 24 V DC;
current draw
10 μA
7 to 24 V DC with
a maximum current
draw of 22 mA
(2 mA quiescent
current draw)
5.5 to 24 V DC;
current draw
10 μA
Self-powered
Uses a 5 V USB
power source and
has a 2.1 mA
current draw when
logging
5.5 to 24 V DC
Output
(sensivity)
0.2 mV per
μmol m⁻² s⁻¹
0.625 mV per
μmol m⁻² s⁻¹
0.004 mA per
μmol m⁻² s⁻¹
1.25 mV per
μmol m⁻² s⁻¹
0.2 mV per
μmol m⁻² s⁻¹
― ― ―
Calibraon
Factor
(reciprocal of
output)
5 μmol m⁻² s⁻¹
per mV
1.6 μmol m⁻² s⁻¹
per mV
250 μmol m⁻² s⁻¹
per mA
0.8 μmol m⁻² s⁻¹
per mV
5 μmol m⁻² s⁻¹
per mV
Custom for each sensor and stored
in the rmware
Calibraon for
Uncertainty
± 5 %
Output Range 0 to 800 mV 0 to 2.5 V 4 to 20 mA 0 to 5 V 0 to 800 mV USB SDI-12 Modbus
Measurement
Repeatability
Less than 0.5 % Less than 1 %
Long-term Dri Less than 2 % per year
Non-linearity Less than 1 % (up to 4000 μmol m⁻² s⁻¹)
Response Time Less than 1 ms
Soware updates
every second
Less than 0.6 s 320 ms
Field of View 180°
Spectral Range 410 to 655 nm (wavelengths where response is greater than 50 % maximum)
Spectral
Selecvity
Less than 10 % from 469 to 655 nm
Direconal
(Cosine)
Response
± 5 % at 75° zenith angle
Temperature
Response
0.06 ± 0.06 % per C
Operang
Environment
-40 to 70 C; 0 to 100 % relave humidity; can be submerged in water up to 30 m
Dimensions 24 mm diameter, 33 mm height
500 x 15 x 15 mm;
SQ-311/321:
700 x 15 x 15 mm
24 mm diameter;
33 mm height
23.5 mm diameter,
44 mm height
Mass
90 g (with 5 m
of lead wire)
100 g (with 5 m of lead wire)
275 g;
SQ-311/321: 375 g
Sensor head
weighs 90 g
117 g
(with 5 m of lead wire)
SQ-110/120-SS
SQ-422-SS
SQ-212/222-SS
SQ-421-SS
SQ-214/224-SS
SQ-215/225-SS
SQ-300 Series SQ-420
Measure photosynthecally acve
radiaon (PAR) in μmol m⁻² s⁻¹
• 0 to 800 mV • 0 to 2.5 V
• 0 to 5 V • 4 to 20 mA
• USB • SDI-12
• Modbus • or hand-held meter
Sensors come calibrated for either sun or
electric broadband light sources.
Line Quantum Sensor Opons
Sensors are available with mulple detectors mounted along the length of
a rugged anodized aluminum bar, which provides spaally averaged PPFD
measurements.
SQ-311
MQ-200