Sper Scientific 850038 Pure Water Meter - Manual (Page 9)

8
PREPARATION FOR CALIBRATION
Two issues should be considered
before operation:
W
hat is the right calibration standard?
W hen should you calibrate?
Selecting a calibration standard
For best results, select a conductivity,
TDS or NaCl
standard near the
s
ample value you are measuring.
Alternatively, use a calibration solution
value which is approximately 2/3 of the
full scale of the measurement range you
plan to use.
For example, in the 0 to 1999 uS range,
use 1413 uS solution for calibration.
Conductivity
measuring range
Recommended cal.
solution range
TDS measuring
range (factor=0.5)
Recommended cal.
solution range
0~19.99uS
0~199.9uS
0~1999uS
0~19.99mS
0~199.9mS
6.00~17.00uS
60.0~170.0uS
600~1700uS
6.00~17.00mS
60.0~170.0mS
0.00~9.99ppm
0.0~99.9ppm
0~999ppm
0.00~9.99ppt
0.0~199.9ppt
3.00~8.50ppm
30.0~85.0ppm
300~850ppm
3.00~8.50ppt
30.0~85.0ppt
1
2
3
4
5
1
2
3
4
5
R efer to below table.
Use the recommended solution for
different conductivity and
TDS ranges
for best results.
DO NOT reuse the calibration solution.
Contaminants in the solution will affect
the calibration and the accuracy. Be
sure to use fresh solution each time.