Darklight Duo-Combination Sensitometer/Densitometer with Automatic Scanning
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Darklight® Duo scan with integrated PC interface, user menu, and automatic scanning
- For constancy tests of film processors according to German Standard DIN 6868 and International Standard IEC 61223-2-1
- High precision and reliability
- Sensitometer according to DIN 6868-2
- Densitometer with digital display
- RS232 Interface (9- poles serial socket) for data transmission to PC
- Integrated user menu for guiding the user through the operation steps for constancy test
- Stored reference values for up to 25 locations
- Output of logarithmic speed and average gradient (LS and G) as defined in ISO 9236-1
- Automatic function for connection measurements for new film batches
- Output of new reference values according to DIN V 6868-55 (Dmin), sensitivity index SI, contrast ind. CI)
- Automatical evaluation of all 21 sensitometer steps; measuring time less than 5 seconds!
- Manual measurement at any place with 180mm arm length
Technical Data
- Size: 240 x 165 x 60 mm
- Weight: 800g (without batteries)
- Power: 4 x AA/ 1.5 V (Alkaline or NiCd) or darklight ® power supply
Sensitometer
- Specification by German Standard DIN 6868-2and DIN V 6868-55
- Spectral characteristic - blue/green switchable
- Peak wave length
- blue 460 nm + 10 nm
- green 510 nm + nm - Exposure :
adjustable in 5 steps, divided for every exposure color
+0.3 log exp.
+0.15 log exp.
-0.15 log exp
-0.3 log exp. - Long term exposure stability : + 0.02 log exp.
- Grey wedge - 21 steps
- Grey wedge constant - 0.15 log exp.
- Homogenity of the steps : + 0.01 log exp
- Precision of the steps :
5% wedge for duo scan
1% wedge for duo scan ref
+ 0.05 for D<1 (duo scan)
+ 0.01 for D<1 (duo scan ref )
Step 1 covered (measuring value for vase and fog =Dmin)
Densitometer
- Specification by German Standard DIN 6868-2, DIN V 6868-55 and International Standard IEC 61223-2-1
- Spectral characteristics :
- visual optical density according to German standard DIN4512-3
- internal light source - Measuring orifice aperture - Ø 3mm
- Measuring range : D = 0 up to D> 4.5
- Measuring accuracy for D< 3 : + 0.01 (max. + 0.02)
- Repeat accuracy for D : + 0.01
- RS 232 Interface (9-poles serial socket) for data transmission to PC
- Integrated user menu
- Measuring modes
- manual single measurement
- 21 step automatic passage
- 21 step manual measurement - Film speed :
- manual on touch, typical 5 sec.
- speed variable 3-20 sec.
- all formats possible
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