Robust And Easy To Use Handy Digital Densitometer

Instruction:

The HUA-100 is a robust, easy to use, portable densitometer for measuring the transmission density of x-ray film. The unit has been designed for using in one-site

mobile darkrooms, laboratories and offices. The HUA-100, with a extremely wide light

range of between 650Cd/m and 320 000 Cd/m , has a density measuring range from

0D to 4.5D with an accuracy to within ±0.03D over an aperture of 3mm in diameter.

The operator simply places the film on the viewer (emulsion side up), places the probe

on the film where the reading is required and the reading will appear on the 4 digit

LCD screen with white light illuminated display. And a low battery warning indicator

is provided on the digital display.

Measurement:

1. Turn on HUA-100's power switch(1), then "--.--" appears which indicate waiting for

Zeroing.

2. Place HUA-100 on a film viewer. We strongly suggest work with LED film viewers,

such as HFV-2008, HFV-2009, HFV-2010 etc.

3. Keep the HUA-100 on the viewer, pressed down the Zero adj(2), keep it down until

0.00 indication appears, then release the Zero adj(2).

4. Place the area of the specimen that you want to measure, then put Measuring Spot(3)of HUA-100 on the area of the specimen.

5. Digital reading shows density of the specimen.

6. Short Press of Zero adj, the back light will turn on or off.

Technical Specifications:

Program Mode

1. Enter into Program Mode:

Keep Zero button pressed down, then turn on power switch(1), until 8 arrows appears, then release the Zero button. It means you have entered into Program Mode.

2. F-x function

After entered into Program Mode, you will see F- x(x=0,1,2 or 3).

F0: original data, suit to our local market.

F1: suit to China market

F2: suit to U.S market (default)

F3: Null

Short press the Zero button, factor x will be turn between 0-1-2-3-0.

Note: the factor will save automatically

3. Advanced calibration function

In the F-x interface, long press Zero button, after display A.0B(A,B=0,1,2 …or 9), release Zero button.

Short press the Zero button, factor B will turn between 0,1,2,3,…9,-9,-8,-7…-1,0.

Long press the Zero button, factor A will turn between 0,1,2,3,…9,0, and save the previous factor B.

In previous version, we can only set 1 factor (from -0.05 to +0.05),this factor will be valid from 0.00-5.00 H/D.

Now, we can set 20 factors (from -0.19 to +0.19), each factor be only valid for corresponding density range, see the table below:

With the help of this function, we can just calibrate several certain density ranges,

for example:

So we can set corresponding factor as below:

After that, you will get the right measurement. for most of case, you don’t need to calibrate,because we already have F0-F1-F2-F3 mode.