Light Meter

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Luminance Meter
TES-137

Luminance Meter

Product Features
  • Dual Display, 4-digit LCD reading.
  • Spectral Sensitivity close to CIE photopic Curve.
  • Measuring Levels Ranging: > 0.171 to 1999k cd/m², > 0.050 to 580.0k fL, Autoranging 7 step.
  • Accurate and Instant response.
  • Luminance ratio A/B, deviation %A, different B-A and peak luminance measurements.
  • User calibration factor and color-correction functions.
  • Accumulation luminance measurement.
  • Max/Min/AVG function.
  • Backlight LCD display.
  • Comparator function.
  • Data Hold function.
  • Data memory and read function.
  • Data logger function.
  • USB Interface.

 

Display

Dual display 4 digit LCD read out.
Measuring Range
9.999, 99.99, 999.9, 9.999k, 99.99k, 999.9k, 1999k cd/m²
9.999, 99.99, 999.9, 9.999k, 99.99k, 580.0k fL
Auto ranging (7 step)     (1 fL = 3.426 cd/m²)
Minimum measurement range: >0.171cd/m² (> 0.050fL)

Measuring Angle

2°

Overrange Display

OL is displayed

Resolution

0.001 cd/m², 0.001 fL

Accuracy

±3% rdg ±5dgt (Calibrated to standard
 incandescent lamp, 2856
Κ, at 25°C/77°F)

CIE Photopic f ’1

6%

Temperature Characteristics

±0.1%/°C

Measuring Rate

Approximately 5 time/sec

Photosensor

Silicon photodiodes

Data Memory Capacity

200 sets. (Direct reading from LCD display)

Data Logger Capacity

microSD card

Operating / Storage Conditions

0°C to 50°C <80% RH
 -10
°Cto 60°C <70%RH

Power Source

6 pcs 1.5V AAA size Battery

Battery Life (typical)

50 hours

Photosensor Lead Length

90 cm (approx.)

Photosensor Dimensions

40f×158(L)mm

Dimension

150(L) × 72(W) × 35(H)mm

Weight

Meter: 235g, Photosensor: 210g

Accessories

Carrying case, Instruction manual, Battery,
 CD software, Micro-USB cable.

 
q Luminance measurement of LCDs, CRTs, LEDs, etc.
 
q Luminance measurement of street lighting, tunnel lighting, etc.
 
q Measurement of airport lighting facilities.
 
q Transmittance measurement for LCD polarizing plates and various filters.
 
q Measurement of medical lighting.
 
q Illuminance irregularities of automobile license plates.
 
q Luminance measurement of various lighting facilities, etc.