Cannon Instrument D155 Density Meter - Manual (Page 23)

20
3-3. Measuring procedure
Note:
Prior to each day’s work, measure pure water by pressing [MEAS] key to
make sure the result of specific gravity (SG) shows a value within
± 0.0005 of the nominal value of pure water at the test temperature. If the
measuring cell and tube lines were filled with ethanol (for short-term
storage), wash out the ethanol with as much pure water before
measurement is started. If the result shows a SG (t/t) value outside of the
± 0.0005 range, repeat the cell cleaning and re-measure the water
standard. If the measurement results for pure water continue to fall
outside of this range, the meter should be factor calibrated as per
Section “3-2 Factor calibration with pure water.”
1) Make sure that the cell temperature is stable at the set temperature and
that “Ready to Test” appears on the main display as shown above.
D155 with pump
2) Inject the sample to be measured into a clean cell:
a. If using the optional peristaltic pump, put the tube into the
sample liquid as shown on the left.
b. If using a syringe, inject 2 to 5 mL of the sample to be
measured.
D155 with syringe
3) Press [MEAS] key. If using the peristaltic pump, the sample will be
automatically injected for the Sampling Time (set in Menu:2.) as shown
below:
↓
4) When measurement starts, the display will show:
Visually inspect the cell through the cell window to ensure that no bubbles
are present in the cell
↓
1 0 / 3 0 / 1 2 0 9 : 4 0
R e a d y t o T e s t 2 0 . 0 ° C
P l e a s e L o a d S a m p l e
P r e s s M E A S t o S t a r t
1 0 / 3 0 / 1 2 0 9 : 4 5
S A M P L I N G : 1 0 s
< < P l e a s e W a i t > >
1 0 / 3 0 / 1 2 0 9 : 4 6
M E A S U R I N G
< < P l e a s e W a i t > >
CANNON ® D155 Density Meter Instruction & Operation Manual
Version 1.1b – August 2014; CANNON® Instrument Company
2139 High Tech Road • State College, PA • 16803 • USA