We proudly present the new Smart SHP1 pyrheliometer. The smarter way to measure direct normal irradiance (DNI). Based on our well-known CHP 1 model, but improved and 'smarter'. It has additional interfaces, faster response and improved temperature specifications

ike the SMP series, the SHP1 pyrheliometer has an amplified analogue output and digital RS-485 interface with Modbus® protocol. All SHP1 pyrheliometers have the same calibrated output range, which makes it easy to exchange instruments. In addition to the irradiance value in W/m², temperature and power supply voltage are available over the serial bus. The analogue output can be either 0 to 1 Volt or 4 to 20 mA. The SHP1 requires very low power from a supply between 5 and 30 VDC and is protected against over voltage, reversed polarity and short circuiting.

Each SHP1 is temperature tested and the data is used to create an individual correction for the change in sensitivity with temperature over the range from -40 °C to +70 °C. A smart algorithm improves the response time to 2 seconds. The quartz window gives the SHP1 a spectral range from 200 nm to 4000 nm.

The SHP1 comes with PC software for setting the Modbus® parameters (such as the instrument address) and logging and visualising the data. The SHP1 is equipped with a rain shield and alignment aids. Like all pyrheliometers, an automatic sun tracker is required to point it accurately at the sun.