This promotional package includes both an SQ-500 Full-spectrum Quantum sensor with a 30 cm cable and microCache Bluetooth micro-logger at a special introductory price. When paired, these two devices are a powerful tool for monitoring photosynthetically active radiation with research-grade accuracy for optimal plant growth. The SQ-500 sensor is a trusted industry standard for making accurate PPFD measurements. The new AT-100 microCache (µCache) micro-logger is a rugged, standalone, battery-powered device that can collect over 400,000 data points and connects your sensor to your iOS or Android device via Bluetooth using our ApogeeConnect app. The app allows you to make real-time measurements, set custom datalogging intervals, monitor and graph daily lights integrals, measure photoperiods, download datasets, and more.

Specifications:

Power Supply
Self-powered

Output (Sensitivity)
0.01 mV per µmol mˉ² sˉ¹

Calibration Factor (Reciprocal of Sensitivty)
100 µmol mˉ² sˉ¹ per mV

Calibration Uncertainty
± 5 %

Calibrated Output Range
0 to 40 mV

Measurement Range
0 to 4000 µmol mˉ² sˉ¹

Measurement Repeatability
Less than 0.5 %

Long-term Drift
Less than 2 % per year

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

Response Time
Less than 1 ms

Field of View
180˚

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

Spectral Selectivity
Less than 10 % from 412 to 682 nm ± 5 nm

Directional (Cosine) Response
± 5 % at 75˚ zenith angle

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
24 mm diameter, 37 mm height

Mass (with 5 m of cable)
100 g

Communication Protocol
Bluetooth® Low Energy (Bluetooth 4.0+)

Bluetooth Range
~45 m (line-of-sight)

Data Logging Capability
Averaging Interval: 1-60 minutes; Sampling Interval: ≥ 1 second

Data Log Capacity
Over 400,000 Entries (~9 months at a 1-minute logging interval)

Time Accuracy
± 30 seconds per month at 0° C ~ 70° C

Battery Type
2/3 AA 3.6 Volt Lithium Battery

Battery Life
~1 year w/ 10-second sampling interval and an average of 5 minutes daily connected time; ~2 years w/ 60-second sampling interval and an average of 5 minutes daily connected time

Operating Environment
-40 to 85 C

Dimensions
66 mm length, 50 mm width, 18 mm height

Weight
52 g

IP Rating
IP67

Connector Type
M8Bluetooth ModuleBMD-340 Contains FCC ID: 2AA9B10 IC: 12208A-10

ADC Resolution
24 bits

Warranty
4 years against defects in materials and workmanship