ER08-S & ER08-SE Pyranometer
The Middleton Solar ER08-S exceeds the ISO 9060 specifications for a Very High Quality Secondary Standard Pyranometer.
The ER08-S features an innovative new design or detector to give very low zero offset and fast thermopile response. The ER08-SE version has an inbuilt amplifier with a millivolt output for easy signal measurement.
New design: Integrating Cavity Pyranometer.
Reduced measurement uncertainty – hidden offsets are insignificant.
Suitable for all precision Meteorological and Industrial applications.
Very fast response time is ideal for solar Photovoltaic Power Plant monitoring.
Single glass dome gives lower directional error than conventional double dome configuration.
| Performance Specification | ISO 9060 Secondary Standard | ER08-S and ER08-SE |
| Response Time (to 95%) | < 15 sec | 0.3 sec |
| Zero offsets A) Thermal Radiation (200 W.m-2) B) Temperature Change (5K/hour) |
(ventilated) + 7 W.m-2 |
(ventilated or unventilated) < ± 0.2 W.m-2 |
| ±2 W.m-2 | < ± 0.2 W.m-2 | |
| Non-stability (per year) | ± 0.8% | < 0.1% |
| Non-linearity (100-1000 W.m-2) | ± 0.5% | < ± 0.2% |
| Directional Response (1000 W.m-2) | ±10 W.m-2 (30-80°) | < ± 10 W.m-2 (0-80°) |
| Spectral Selectivity (0.35 to 1.5 um) | ± 3% | < ± 3% |
| Temperature Response (for 50K interval) | ± 2% | < ± 1% (-20 to +60°C) |
| Tilt Response (0-90°) | ± 0.5% | < 0.2% |
| Viewing Angle: | 2π steradians |
| Irradiance: | 0 – 4000 W/m2 |
| Spectral Range: | 295 – 3000nm (50% points) |
| Sensitivity (Typical): | ER08-S: 7 uV/W.m-2; ER08-SE: 1 mV/W.m-2 |
| Achievable Resolution: | 0.1 W.m-2 |
| Expected Output Signal (0 – 1500 W/m2) | ER08-S: 0 to 15mV; ER08-SE: 0 to 1.5V |
| Initial Calibration Uncertainty (k=2): | < ± 1.5% (traceable to WRR) |
| Achievable Daily Uncertainty: | 2% (95% confidence level) |
| Output Impedance (nominal): | ER08-S: 6kΩ; ER08-SE: 65Ω |
| Measurement Input Impedance: | > 10MΩ recommended for ER08-S |
| Power Requirement: | ER08-S: none; ER08-SE: 5 – 15 VDC, < 6 mA |
| Operating Temperature: | -40 to +80°C |
| Operating Humidity: | 0-100% RH |
| Bubble Level Resolution: | 0.1° |
| Level Adjustment: | one fixed foot, two adjustable feet |
| Detector Type: | thermopile |
| Dome Window: | ground from solid optical glass blank; Schott N-BK10 |
| Body Construction: | anodised marine-grade aluminium |
| Shade Disk: | powdercoated aluminium |
| Fasteners & Feet: | stainless steel |
| Dessicant: | orange silica gel (non-toxic) |
| IP Rating: | sealed to IP67 |
| Mounting Method: | central M10 hole in base (mounting knob supplied), or two M4 holes on 65mm P.C.D |
| Output Lead: | 6m, with connector at instrument end |
| User’s Guide & Calibration Certificate: | Included |
| Net Weight: | 0.8kg |
| Shipping Size & Weight: | 230 x 230 x 180mm, 2kg |
