Features
Ideal for medical, laboratory, scientific and industrial precision light readings!
When used for mammography quality control of viewbox luminance and room illuminance, this device ensures that:
- The luminance of viewboxes for interpretation or QC of mammography images meets or exceeds minimum levels.
- Ambient illuminance levels are below prescribed levels.
- Viewing conditions have been optimized
Functions
- Checks x-ray viewbox and generator collimator light.
- Check CT system light source
- Measures light localizer illumination
- Measures brightness and uniformity of a light source.
Features
- Easy to read digital display
- Small, convenient to carry. Supplied with its own carrying case.
- Rugged construction.
This Precision Photometer utilizes a filtered sensor with spectral response tightly calibrated to the CIE photopic response. The illuminance receptors closely follow the Cosine Law relative sensitivity versus angle of illuminance.
The Precision Photometer is a highly accurate instrument 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 easily and quickly verifies that an x-ray collimator light and/or CT system light source used for patient alignment and localization, is in accordance with regulations and guidelines. It also measures the brightness and uniformity of an x-ray viewbox, quickly detecting non-uniformity (which may appear as artifacts, causing misdiagnosis). This battery-operated photometer has a bright LED display and only two operating controls: "Measure" for taking a reading, and "Range" to adjust the meter display to the light level being measured.
Principal Features
- Measure Button: Press it to get continuously updated readings. Releasing the measure button freezes the last reading for convenient reference.
- Range Button: Adjusts the measurement display for the resolution desired.
- LED Display: Visible in very dim light, as well as direct sunlight. LED displays are inherently robust in comparison to LCD (liquid crystal) displays.
- The battery-powered photometer provides tens of thousands of readings.
Specifications
- Capabilities: Iluminance measured in lux (foot-candles); or luminance measured in candela/m2 (nit).
- Readout display: Three-digit LED, 1¼4" high
- Range: 0.1 to 999.000 lux or nits (candela/m2), equivalent to 0.01 to 99,000 foot candles.
- Accuracy: Within 7% of full scale range, for light sources between 2500 degrees and 5400 degrees Kelvin
- Electrical Accuracy: 1% plus 2 digits
- Sensor: Silicon photodiode with photometric filter
- Response Curve Shape: Close match to CIE photopic response curve
- Batteries: Type A-76 alkaline button cells or silver oxide equivalents
- Dimensions: 4" H x 2/8" W x 1.2" thick (10×7 x 3 cm)
- Weight: 4 oz (120 g)
Parts
- 0695-0087 Precision Photometer with carrying case
- 0695-0087 Precision Photometer with carrying case
- 0695-0088 Flexible 12-inch Fiberoptic Probe (must be calibrated meter)
- 0695-0089 1” Rigid Fiberoptic Probe (must be calibrated with meter)
- 0695-0090 Rotating Illuminance Receptor (must be calibrated with meter)
- 0695-0091 Storage Carrying Case
Factory recalibration available. Price on request.
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