Hagner - Model ERP-105 -Evacuation Route Digital Photometers

The Hagner ERP-105 Digital Photometer is a precision instrument designed to measure the luminance of photoluminescent signs and materials over a range of 0.01-20,000 mcd/m², in the field as well as in the laboratory. The light sensitive device is a robust silicon photo diode with long-term stability, which with the new patented amplification system is brought to very high sensitivity. The detector is carefully filtered to produce the same spectral response characteristic as that of the human eye, as defined in CIE-standards. This remote sensor is supplied with 2 metres of flexible cable. Extension cables can also be used for measurements at any desired distance from the detector.