9 3 9
S P E C T R O D E N S I T O M E T E R
7-1
7.
Appendices
Instrument
Specifications
7-1
Error
Messages
7-2
Changing the Aperture
7-3
Instrument Specifications
Measurement Geometrics
0/45°, DRS spectral engine, choice of optical
aperture: 4mm, 8mm, and 16mm
Light Source
Gas-filled tungsten lamp
Illuminant Types
A, C, D50, D65, D75, F2, F7, F11, & F12
Standard Observers
2°
&
10°
Response Types
A, E, I, T, A
x
, E
x
, & T
x
Receiver
Blue-enhanced
silicon
photodiodes
Spectral Range
400 nm – 700 nm
Spectral Interval
10 nm – measured, 10 nm – output
Storage
1,024 standards with tolerances, 2,000 samples
Measurement Range
0 to 200% reflectance
0 to 2.5D
Measuring Time
Approx. 2 seconds
Inter-Instrument Agreement
0.15
∆
E*
ab
, based on avg. of 12 BCRA series II tiles*
0.30
∆
E*
ab
max. on any tile*
±0.005D or ±0.5% whichever is greater (for Status T
Response at SWOP™ recommended density values)
Short-Term Repeatability
.
05
∆
E*
ab
max. on white ceramic, standard deviation
±0.005D 0-2.0D
±0.5% 2.1-2.5D
Lamp Life
Approx. 500,000 measurements
Power Supply
Removable (Ni-metal hydride) battery pack;
7.2 VDC rated @ 1450 mAh.
AC Adapter Requirements
Input 100-240 VAC, 50-60Hz, 12Vdc Output
Charge Time
Approx. 4 hours – 100% capacity
Measurements Per Charge
1,000 measurements typical
Data Interface
Patented bi-directional RS-232, 300-57,600 baud
Display
128 x 256 pixel graphical LCD
Operating Temperature Range
50° to 104°F (10° to 40°C)
85% relative humidity maximum (non-condensing)
Storage Temperature Range
-4° to 122°F (-20° to 50°C)
Dimensions
4.3
”
H (10.9 cm) 3.3
”
W (8.4 cm) 7.7
”
L (19.6 cm)
Weight
2.4 lbs. (1.1 kg)
Accessories Provided
Calibration Standard, Manual, AC Adapter,
Carrying Case, Verification Reference,
Measuring Apertures
Usage
Indoor
only
Altitude
2000
m
Pollution Degree
2
Overvoltage
Category
II
X-Rite reference standards are traceable to the National Institute of Standards and Technology through
Munsell Color Science Laboratory RIT.
*8mm aperture.
Summary of Contents for 939
Page 1: ...939 S P E C T R O D E N S I T O M E T E R Operator s Manual ...
Page 25: ...C H A P T E R T W O 2 8 ...
Page 29: ...C H A P T E R T H R E E 3 4 ...
Page 57: ...C H A P T E R F O U R 4 28 ...
Page 101: ...C H A P T E R S I X 6 4 ...
Page 107: ...C H A P T E R S E V E N 7 6 ...