Ludlum Medical Physics Model PMLX

  Photometer

Introduction

The model PMLX Precision Photometer is designed to measure both illuminance (the amount of light falling on a surface) in lux (lumens per m2 ) and luminance (the amount of light emitted from a surface in ‘nit’ (candela per m2 ).

The Precision Photometer quickly verifies that collimator light sources are in accordance with regulations. It also measures the brightness and uniformity of an x-ray viewbox for appropriate brightness and uniformity.

When used for Mammography Quality Control, the photometer will provide measurement of viewer luminance and room illuminance required by MQSA guidelines.

Either of two optional (rigid or flexible) fiber optic probes can be used to make measurements of  SMPTE*  patterns produced by digital display units, in order to determine appropriate density and contrast settings for image display monitors.

The battery operated photometer has a bright LED display and only two operating controls:  “Measure” for taking readings, and “Range” to adjust the meter display to the light being measured.

*[SMPTE: Society of Motion Picture & Television Engineers]

Specifications

Part Number: 99-9700

Range: 0.1 to 999,000 lux or nits
Dimensions: 4”H x 2.8”W x 1.2” Thick
Weight: 4oz.