This product is no longer manufactured. Remaining stock may still be available. Please refer to the alternatives listed below under "Similar products" or contact us directly.

Alternative Products for this discontinued product:

Four-Channel USB Optometer, Respectively Current Amplifier, Designed for Photometric and Radiometric Detectors for Mobile-Use

X9-1

Photometer for illuminance and luminance. Features: Mobile light meter with illuminance and luminance detector for use with polychromatic radiation sources. X9-1-US version for measurement of the illuminance in fc and luminance in fL.

The X9₁ (Xnine one) meter plus VL-3704-4 and/or LDM-9901-4 light detector forms a compact hand-held photometer for both illuminance (lux)* and luminance (cd/m²)* measurement in general lighting applications. The X9₁lightmeter design features separate meter and cable connected detector heads one for illuminance and one for luminance measurements. * SI units of measurement

Illuminance Meter

The VL-3704-4 Illuminance detector is fitted with a precise photometric correction filter and cosine diffuser. It’s V(λ) spectral sensitivity matches the DIN CIE standard f1’ error to equal or better than 5% meeting the DIN Class B specification. Its 20 mm low profile height allows measurement close to the reference level.

Luminance Meter

The LDM-9901-4 Luminance detector is designed with a chromatically corrected lens for a measurement distance independent V(λ) match of f1’ error equal to or better than 5% to the DIN CIE standard. Its field of view is 1.1° with a measurement distance range 40 cm to infinity. To target the object to be measured, the LDM-9901 has a notch and bead sight which has marks for near and far field distances.

Compact Size for Mobile Use

1 meter is a hand-held battery operated meter with 9 mm high character LCD display for easy viewing. Its high linearity current to voltage amplifier offers automatically (Manual?) selected gain ranges. Operating the X9₁ is simple. Once set-up all settings are stored and recalled on next power-up unless settings are changed. The light detector connected is recognized by the meter and set to the associated measurement quantity. The meter is operated by a standard 9 V battery.

Measurement in footcandles and footlamberts

The US version of the X9₁ (Xnine one) meter plus VL-3704-4 and LDM-9901-4 light detector measures illuminance in footcandles (fc) and luminance in footlamberts (fL).