EKO INSTRUMENTS CO., LTD. MS-56 Pyrheliometer Manual Ver.5
Pg. 8
5. Getting Started
5 - 1 . P a r ts D e s c r i p t i o n s
MS-56 pyrheliometer is designed to capture direct solar radiation with high precision and long term reliability.
The new concept is a result of combining new technologies with proven pyrheliometer basics to fulfill most
stringent demands for solar energy research in the Photovoltaic and Meteorological market.
The Pyrheliometer is based on a well balanced light weight thermopile detector, which gives a highly stable
output under most critical situations and variable measurement conditions. Each detector is individually
characterized and temperature compensated to guarantee its best performance. During field operating, the
detector temperature can be monitored with a thermistor
(44301 10kΩ) or platinum resistance temperature
sensor (Class A Pt100) to extend further research applications.
Although the MS-56 dimensions are relatively small, it has a full 5° opening angle and 1° slope angle
geometry. The front aperture has a unique integrated alignment sight for easy and precise alignment of the
instrument on a Sun Tracker. The removable rain cap can be used as a rain shield but can also be taken off
when the measurement conditions allow. In order to attain the proper spectral characteristics and spectral
range, the pyrheliometer has Quartz precision optics and ultra low reflective black detector absorber to
capture direct solar radiation in the specified spectral range.
The large volume desiccant cartridge ensures a dry environment inside the pyrheliometer to protect delicate
optical parts from any condensation. A cable with plug in connector is provided for easy handling and flexibility
during installation, maintenance and service. The basic construction outline is shown in the assembly
drawing.
Figure 5-1. MS-56 Body
4. Baffles
9. Detector Aperture
5. Sensor Body
8. Plug-in Connector
1. Rain Cap
6. Temperature sensor
7. Drying Cartridge
3. Sight
2. Quartz Window with Heater
