Test & measurement instruments

Desktop Film Transmission Meter LS101 with UV and IR Rejection

Linshang  |  SKU: INS02-2124
$141.71 USD
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Description

The Linshang LS101 desktop film transmission meter checks visible-light transmission, UV rejection and 940 nm infrared rejection on one backlit LCD. Its parallel optical path and self-supporting body suit comparisons of solar film, film-on-glass and compatible transparent glass samples.

LS101 illustration showing its rear support stand
LS101 illustration showing its rear support stand

Compare film and glass on the desktop

The meter uses a 380–760 nm visible response aligned with the CIE photopic luminosity function, a 365 nm UV source and a 940 nm infrared source. All three results appear together, allowing the same sample to be evaluated under the meter’s defined optical conditions.

Place the instrument on a stable surface and open its rear support for a comfortable viewing angle. Insert the sample close to the left side of the test opening and keep its position consistent between comparisons. The parallel light path supports thicker transparent samples that fit the opening.

LS101 measurement and power specifications

Visible-light response 380–760 nm, CIE photopic luminosity function
UV peak wavelength 365 nm
IR peak wavelength 940 nm
Resolution 0.1%
Accuracy ±2% for colorless, uniformly transparent material
Power options 4 AA alkaline batteries or 5 V USB Type-C power
Dimensions 175 x 120 x 30 mm
Weight 360 g
Operating conditions 0–50°C; 0–85% RH, non-condensing
LS101 illustration showing a held measurement
LS101 illustration showing a held measurement

Calibrate the empty opening and retain readings

Power on with the slot empty and wait for self-calibration. The initial display shows 100% visible transmission and 0% UV/IR rejection. A short button press holds a result after removing the sample; release hold before starting another measurement.

The backlit display helps with indoor demonstrations. Battery operation has a ten-minute inactivity shutdown, while external 5 V USB power supports continuous operation with the backlight on. The rear stand keeps the display angled during a series of checks.

Record the optical conditions with each comparison

Use the same meter and sample placement across a test series. The accuracy rating applies to colorless, transparent material. Colored and coated samples require interpretation under their actual measuring conditions, and the infrared result should be recorded with its 940 nm wavelength.