Introduction to Sensor
The SQ-612-SS ePAR Sensor is an advanced amplified sensor designed to measure the newly defined 400–750 nm extended Photosynthetically Active Radiation (ePAR) range. With a 0–2.5 V output, rugged fully submersible aluminum housing, and IP68 marine-grade connector, it provides reliable measurements in demanding growing and research environments.
Specifications
Specifications
| Parameter | Specification |
|---|---|
| Power Supply | 5 to 24 V DC |
| Current Draw | 57 µA at 12 V |
| Output (Sensitivity) | 0.625 mV per µmol m⁻² s⁻¹ |
| Calibration Factor (Reciprocal of Sensitivity) | 1.6 µmol m⁻² s⁻¹ per mV |
| Calibration Uncertainty | ±5% |
| Calibrated Output Range | 0 to 2.5 V |
| Measurement Range | 0 to 4000 µmol m⁻² s⁻¹ |
| Measurement Repeatability | Less than 0.5% |
| Long-Term Drift (Non-Stability) | Less than 2% per year |
| Non-Linearity | Less than 1% (up to 4000 µmol m⁻² s⁻¹) |
| Response Time | Less than 1 ms |
| Field of View | 180° |
| Spectral Range | 394 to 747 nm ±5 nm (wavelengths where response is greater than 50%) |
| 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% |
| Housing | Anodized aluminum body with acrylic diffuser |
| IP Rating | IP68 |
| Operating Environment | −40 to 70 °C; 0 to 100% relative humidity; submersible up to 30 m depth |
| Dimensions | 30.5 mm diameter × 37 mm height |
| Mass | 140 g (with 5 m cable) |
| Cable | 5 m two-conductor, shielded, twisted-pair wire; TPR jacket; pigtail lead wires; stainless-steel (316) M8 connector |
| Warranty | 4 years against defects in materials and workmanship |
| Manufactured | Assembled in the USA |
Features
Applications