Digital output full-spectrum quantum sensor

SDI-12 Full-spectrum quantum sensor

Name: SDI-12 Full-spectrum quantum sensor
SKU: SN-SQ-521SS
Price: 726.0 EUR
Availability: InStock

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NOTE: Beginning June 1, 2025, Apogee Instruments will introduce import fees on certain products manufactured in the USA. This may result in an increase of less than 5% for most items. Please note that prices listed on our website are subject to change accordingly, and the final price will be confirmed only upon order completion.

PAR sensors

726.00 €

(Tax excluded)

Documents

SQ-521 Datasheet SQ-521 Product Manual SQ-521 Technical Drawing

Internal Reference: SN-SQ-521SS

Technical Data

Input Voltage Requirement

5.5 to 24 V DC

Current Drain

1.4 mA (quiescent), 1.8 mA (active)

Calibration Uncertainty

± 5 %

Measurement Repeatability

Less than 1 % (up to 4000 µmol mˉ² sˉ¹)

Non-stability (Long-term Drift)

Less than 2 % per year

Non-linearity

Less than 1 % (up to 4000 µmol mˉ² sˉ ¹)

Response Time

0.6 s, time for detector signal to reach 95 % following a step change, fastest data transmission rate for SDI-12 circuitry is 1 s

Field of View

180˚

Spectral Range

389 to 692 nm ± 5 nm (wavelengths where response is greater than 50 % of maximum)

Spectral Selectivity

Less than 10 % from 412 to 682 nm ± 5 n

Directional (Cosine) Response

± 2 % at 45 ˚, ± 5 % at 75 ˚

Azimuth Error

Less than 0.5 %

Tilt Error

Less than 0.5 %

Temperature Response

0.11 ± 0.04 % per C

Uncertainty in Daily Total

Less than 5 %

Detector

Blue-enhanced silicon photodiode

Housing

Anodized aluminum body with acrylic diffuser

IP Rating

IP68

Operating Environment

-40 to 70 C; 0 to 100 % relative humidity; can be submerged in water up to depths of 30 m

Dimensions

30.5 mm diameter, 37 mm height

Cable

5 m of two conductor, shielded, twisted-pair wire; additional cable available in multiples of 5 m; TPR jacket; pigtail lead wires; stainless steel (316), M8 connector

SDI-12 Full-spectrum quantum sensor

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