Digital Lux Meters 51000 Series (DISCONTINUED)
Notice: This product was discontinued on Oct 29, 2021.
Yokogawa digital lux meters offer:
- Wide measurement range, high accuracy
- Spectral response characteristics for visible range
- Good oblique incident light characteristics
- USB communication and USB power supply
- Recorder output
Specification
| Model | 51011 | 51012 | 51021 Discontinued on October 5, 2021. (No alternative product is available.) |
|---|---|---|---|
| Standard | Conforms to class A of JIS C1609-1 2006 "Illumination Meter" | Conforms to class AA of JIS C1609-1 2006 "Illumination Meter" | |
| Photoelectric element | Silicon photodiode | ||
| Display | Liquid crystal display (number of 7 digits); maximum effective display:999; (0 or 0's to indicate the number of digits) | ||
| Measurement cycle | Twice per second | ||
| Measuring range | 0.0 to 99.9/999/9,990/ 99,900/999,000lx | 0.00 to 9.99/99.9/999/9,990/ 99,900/999,000lx | |
| Accuracy(*) | ±4% rdg ±1dgt (under 3000lx) ±6% rdg ±1dgt (over 3000lx) |
±2% rdg ±1dgt (under 3000lx) ±3% rdg ±1dgt (over 3000lx) |
|
| Response time | Automatic range : 5 sec; Manual range: 2 sec | ||
| Fatigue characteristics | ±2% | ±1% | |
| Temperature characteristics | ±5% | ±3% | |
| Characteristics of oblique incident light | Angle of: 10° ±1.5% 30° ±3% 60° ±10% 80° ±30% (deviation from cosine characteristics) |
Angle of: 10° ±1% 30° ±2% 50° ±6% 60° ±7% 80° ±25% (deviation from cosine characteristics) |
|
| Characteristics of visible region relative spectral response | Devation from the standard spectral luminous efficiency: f1' within 9 % | Deviation from the standard spectral luminous efficiency: f1' within 6 % | |
| Operating temperature / humidity | -10 to 40°C 80% RH or less; no moisture condensation | ||
| Function | Response switching, Range Hold, Timer Hold, Deviation display, Auto power off | Response switching, Range Hold, Timer Hold, Deviation display, Auto power off, Color correction factor setting,Average illuminance computation, Ripple measurement, Light source luminous intensity measurement, Measurement of totalized intensity of illumination | |
| Communication | USB | ||
| Output | DC 1V ±5% (fixed range); load resistance: 100kΩ or more | ||
| Dimensions, weight | Approx. 67(W) x 177(H) x 38(D) mm; Approx. 260g | ||
| Power supply | AA (LR6) x 2 OR USB supply (5 VDC ±5%) | ||
| Accessories attached | Instruction manual; dry cell (built in); soft case; recorder output plug | ||
(*) At 23±2°C Accuracy: ±% of reading ± effective min. digit
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