Apogee PQ-500 Package: microCache and Full-spectrum Quantum with 30 cm cable

This Apogee Quantum PAR meter measures the PAR range from 400nm to 700nm. 

This promotional package includes a SQ-500-SS Full-spectrum Quantum sensor with a 30 cm cable, a microCache Bluetooth micro-logger, an AA-090 protective Neoprene Case, an extra 2545 microCache battery, and an AM-020 Apogee PVC Sensor Platform.

When paired, these 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 free ApogeeConnect app.

The app allows you to make real-time measurements, set custom datalogging intervals, monitor and graph daily lights integrals, assure photoperiods, download datasets, and more.

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View Real-time Data
Transmits real-time data to iOS and Android devices using the Apogee Connect app.

Rugged Housing IP67
rated for harsh environments.

Datalogging Mode Stores over 400,000 entries, (9 months of 1-minute data) with programmable sampling and logging intervals.

High Resolution Readings
Processor features a 24 bit analog-to-digital converter.

Warranty and Support
The µCache is backed by a 4 year warranty and outstanding customer support.

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

HousingAnodized 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 RatingIP67

Connector Type M8

Bluetooth Module BMD-340 Contains FCC ID: 2AA9B10 IC: 12208A-10

ADC Resolution 24 bits

Warranty 4 years against defects in materials and workmanshipManufactured

Made in the USA