ERP-105

The Hagner ERP-105 Digital Photometer is a precision instrument designed to measure the luminace of photoluminescent signs and materials over a range of 0.01 - 20,000 mcd/m² (0.00001 - 20 cd/m²), in the field as well as in the laboratory.

General Description

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.

The instrument has built-in temperature compensation.
A "hold" function enables the display value to be retained.
A DC-input is provided for battery eliminator, and an analogue output for external instruments such as loggers, computers and recorders.

Instrument data for ERP-105

Detector: Sillicon photodiode Vλ-filtered
Measurement range: 0.01-19,900 mcd/m²
Accuracy: Better then ±3% (±1 in the last digit on the display)
Temperature range: -5° - +55°C
Power supply: 1 pc 9V type PP3 or battery eliminator
Calibration temperature: +22°C
Output: 0 to 200mV in steps of 100µV per displayed unit
Load impedance: min 1,000 ohm
Measurements: 150 x 85 x 50 mm
Detector: SD17 SD27
Height 60 mm 55 mm
Dia. at front 65/45 mm 29/27 mm
Weight: 0.65 Kg (1.65 Kg incl. carrying case) 0.45 Kg (1.45 Kg incl. carrying case)
Extra accessories: Magnetic holder for detector SD17.

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