HUA-900 Portable Black-White Densimeter Digital Densitometer With
Density Tablet
Introduction:
The densimeter developed by our company, is a quality product of
computer-assisted high technology. It boasts accurate readings,
high stability and easy operation. It can be widely applied to the
fields such as nondestructive testing, publishing industry and
medical science etc. Every densimeter is equipped with a density
tablet for testing its precision.
HUA-900 series digital black and white transmission densitometer is
been used to measure the light quantity which through the
transparent material(like film base). It has lighting system,
acquisition, measure system and signal processing system.
Densitometer use AC modulation light source to offer stable light.
Technical Index:
★Density Range
D=0.00 — 4.00(HUA-900A)
D=0.00 — 4.50(HUA-900B)
D=0.00 — 5.00(HUA-900C)
★Reading Stability
±0.02
★Measurement Uncertainty
0.00 — 2.00 0.02
2.00 — 4.50 0.05
4.50 — 5.00 0.08
★Power Requirements
50～60Hz, 220V±10%
★ Specifications
300×280×115(length*width*height)
★Aperture Diameter
diameter 2mm
★Display Format
three-digit number
★SamplingTime
0.8 seconds
★ Operation Environment
temperature 0℃～40℃
relative humidity ≤85%
★Power Dissipation
About 25W
★Weight
About 3kg
Operating Instructions:
I. Measuring Density Values:
1, Push POWER button on the lower right corner of the densimeter
after connecting it to the electricity and on the screen will
appear “-.--”. It needs 5 minutes to warm up.
2, Push measuring arm down without putting any samples and on the
screen will appear “E.1”. Keeping on pushing down the measuring arm
while pushing the redZero Setting button on the upper right corner of the densimeter and on the
screen will appear “0.00”. Releasing the measuring arm, the
densimeter will enter the stage of measuring density values.3, Align the sample with the aperture and push the measuring arm
button, its density values will be shown on the screen.4, While using the standard density tablet equipped with the
instrument, the zero point should be determined first, that is,
aligning the benchmark without density tablet with the aperture,
pushing down the measuring arm and the Zero Setting button at the same time, start test other samples till the screen
shows “0.00”.
II. Observing Samples:
The tested samples can be observed after the light on the lower
left corner of the instrument is turned on and the trichromatic
fluorescent lights inside the instrument are lit.
III. Points for Attention:
Black-white densimeter is a kind of fine measuring instrument. It
should be kept away from dusts, humidity, alkaline and acid
objects, and magnetic fields.
The joint between the aperture diaphragm and the light source base
is relatively loose for the convenience of cleaning the dusts on
them. Using the cohesive tape to pull out the aperture diaphragm
first and then using writing bush to clean the dusts are strongly
recommended.
The aperture diaphragm has been glued with small cohesive tape when
leaving the plant. In order not to lose the diaphragm, please do
not taking the cohesive tape away when moving or using the aperture
diaphragm.
Please keep the density tablet clean. Use it only when you are not
sure about the readings of the instrument.
When readings of density values are out of the prescribed range,
the measurement data are still of reference value.
