此款密度仪应用了最新的技术和创新的方案，因而DR842是一款复合型密度仪，可以在非常有竞争力的价格上达到从前无法得到的性能。
微控制器可以保证低能量消耗，每次充电可以测量超过20000次。
14位计算器可以保证异常精确的测量，密度读数精确到小数点后三位，网点百分比读数精确到小数点后一位。
光学系统符合ISO CD 14981 标准，使用9个LED光源（每色三个），完全去除了老一代密度仪由于滤色镜和白炽灯快速老化而引起的典型问题。
不管是通过已鉴定的校正片来校正还是使用密度仪的其他模式，DR842的校正过程都是非常快速和简单的。

功能
1：在白纸上归零（设定白场）
2：自动颜色选择
3：密度和密度差
4：灰平衡
5：网点面积百分比
6：自动模式（同时测量密度和网点面积）

7：测量密度可精确到小数点后三位

技术规格
测量面积直径： 3.5毫米
光谱响应： E光谱（窄带）或T光谱（宽带）
测量范围： 0-2.5D（密度）
                 0-100.0（网点面积百分比）
重复精度/线性度： ±0.010D（密度）
                           ±0.5（网点面积百分比）
不同仪器间精度： ±0.020D（密度）
显示屏： LCD,两行，每行8位
预热时间： 不需预热
操作温度范围： 5℃-40℃
每次充电可测： 20000次
电池： 镍-镉充电电池
重量： 360克
尺寸： 125*67*48毫米

标准配件：
包装盒、充电器、校正卡
RS232数据线，操作手册

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Mini densitometer using the latest technology and
extremely innovative solutions, resulting in performances
never before available in such a competitively priced and
compact instrument.
The micro-controller ensures a low energy consumption
to give more than 20.000 measurements per charge.
The converter with 14 BITS produces measurements of
exceptional precision and repeatability - density readings
up to 3 decimal points and dot percentage readings to 1
decimal point.
The optical system meets the ISO CD 14981 standard
using a light source of 9 LEDS (3 of each colour),
completely eliminating problems caused by the rapid
ageing of the filters and of incandescent lamps, typical of
densitometers of the past generation.
The calibration procedure for the DR842 is very quick
and simple, either calibrating on a certified reference tablet
or on other models of densitometers.
FUNCTIONS
􀂾 Zeroing on the white paper.
􀂾 Auto colour select.
􀂾 Density and difference of density.
􀂾 Grey balance.
􀂾 Percent dot area.
􀂾 Automatic.
􀂾 Possibility to display 3 decimal points for
measurements in density.
SPECIFICATIONS
Measuring area diameter: 3,5 mm. (on request 2
mm.)
Spectral response: equivalent to status E
(narrow band) or to status
T (wide band)
Measuring range: 0 - 2,5 D (density)
0 - 100,0 (percent dot
area)
Repeatability, linearity: ± 0,010 D (density)
± 0,5 (percent dot area)
Interinstrument agreement: ± 0,020 D (density)
Display: LCD, 2 lines of 8
characters
Warm-up time: none
Operating temperature range: 5°C - 40°C
Battery: rechargeable NiCd
Measurements per charge: 20.000
Weight: 360 gr.
Dimensions: 125 x 67 x 48 mm.
STANDARD ACCESSORIES
Carrying case, AC adapter-charger, calibration tablet, RS232
serial interface, operation manual.
OPTIONS
Polarising filter.
AVAILABLE MODELS
DR842 E
narrow band spectral response without polarising filter.
DR842 EP
narrow band spectral response with polarising filter.
DR842 T
wide band spectral response without polarising filter.
DR842 TP
wide band spectral response with polarising filter.