| Instrument | Luminance Meter BM-9 |
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| Detector model | BM-920D | BM-910D | BM-902D |
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| Measuring field | 2° | 1° | 0.2° |
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| Optical system | Object lens f = 36mm F2.5 |
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| Viewing field | 5° |
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| Measurement distance | 350mm ~∞ |
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| Display | 4-digit LCD |
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| Photo cell | Sillicone Photodiode |
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| Spectral sensitivity characteristics | Within 8% (deviation from the relative luminous effecieny) ※ JIS C 1609-1993 |
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| Measurement range | 0.01 ~ 199,900cd/m² | 0.1 ~ 1,999,000cd/m²
(10 times of displayed value is luminance value) | 1 ~ 19,990,000cd/m²
(100 times of displayed value is luminance value) |
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| Precision | 4% of rdg ±1 digit
(standard light source A, 23°±3°C, auto range, 1cd/m² or above) | 4% of rdg ±1 digit
(standard light source A, 23°±3°C, auto range, 10cd/m² or above) | 4% of rdg ±1 digit
(standard light source A, 23°±3°C, auto range, 100cd/m² or above) |
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| Temperature properties | Within ± 3% (0 ~ 40°C 23°C as standard) |
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| Humidity properties | Within ± 3% (85% R.H or lower, 60% R.H. as standard) |
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| Analog signal output | 0~3Vmax. 1mv/1 digit Responce speed at time of analog output 1~30ms at FAST |
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| RS output conditions | Baut rate: 2400BPS Data length: 7 Parity: 0DD Stop bit: 1 |
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| Power supply | One 9V battery (6F22) <Operating time using continuously/ approx. 13 hours when not using RS-232C, 5 hours when using RS-232C> |
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| Operating conditions | Temperature: 0°C~40°C Humidity: 85% R.H or lower |
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External dimensions
| Approx. 190(L)x105(W)x56.5(H)mm |
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| Display unit: Approx. 131(L)x73,5(W)x33(H) |
| Detector: Approx. 75.5(L)x105(W)x56.5(H) |
| Weight | Display unit: Approx. 200g (including battery) / Detector: Approx. 250g |
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