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Enabling better global research outcomes in soil, plant & environmental monitoring.

SE-100 & 200 Series Photometric Sensors

The SE-100 Photometric sensor is a self-powered lux sensor with a range of 0-200 Klux over a 0 to 200 mV range. The sensor features a rugged, aluminium housing that is fully-submersible and is built to withstand harsh conditions. The sensor cable includes an IP68 marine-grade stainless-steel cable connector 30 cm from head to simplify sensor removal and replacement from permanent installations for maintenance and calibration. Typical applications of photometric sensors include measuring light levels for human vision in offices, sports arenas, hospitals, museums and more.

 

Utilising the SE-100 Sensor in a custom IoT (Internet of Things)

The SNiP-LUX is a ‘Sensor Node Integrated Package’ for LoRaWAN communication of real-time illuminance, for continuous environmental monitoring (including urban lighting and plant light relations).

The base SNiP-LUX integrates 1x SE-100 Sensor with an AD-NODE to a site’s unique network, communication and power requirements.

Spectral Response

The mean relative spectral response of four SE-100 photometric radiometers (green) compared to the CIE-1931 curve (black). The spectral response can be seen in the graph below.
SE-100 SE-202 SE-205 SE-212 SE-215
Power Supply 3.3 to
24 V DC
5.5 to
24 V DC
3.3 to
24 V DC
5.5 to
24 V DC
Current Draw maximum
of 10 µA
maximum
of 10 µA
maximum
of 10 µA
maximum
of 10 µA
Output (Sensitivity) 0.001 mV
per lux
0.5 mV
per lux
1 mV
per lux
0.0167 mV
per lux
0.033 mV
per lux
Calibration Factor 1000 lux
per mV
2 lux
per mV
1 lux
per mV
60 lux
per mV
30 lux
per mV
Calibration Uncertainty ± 5 %
Output Range 0 to 200 mV 0 to 2500 mV 0 to 5000 mV 0 to 2500 mV 0 to 5000 mV
Measurement Range 0 to 200 klux 0 to
5000 lux
0 to
5000 lux
0 to
150000 lux
0 to
150000 lux
Measurement Repeatability Less than 0.5 %
Long-term Drift Less than 2 % per year
Non-linearity Less than 1 %
Response Time Less than 1 ms
Spectral Range CIE 1931 luminous efficiency function
Field of View 180°
Directional (Cosine) Response ± 2 % at 45°; ± 5 % at 75°
Temperature Response Less than -0.1 % per C
Operating Environment -40 to 70 C; 0 to 100 % relative humidity
Dimensions 30.5 mm diameter, 36.6 mm height
Mass 51 g
Cable 5 m of shielded, twisted-pair wire
with TPR jacket and stainless steel connector
high UV stability, flexibility in cold conditions);
pigtail lead wires; stainless steel (316),
M8 connector located 25cm from sensor head