Myron L 4P (includes Addendum 10-01) User Manual
Page 8
2. Disabling Temperature Compensation
a.
As in Procedure to Select a Solution, pg. 10, select “USER”
mode.
b.
With “USER” selected, press
. If the display does not
show .00%/°C, hold
long enough to bring the tempco to
.00%/°C (see Figure 3).
c.
Press twice (3 times
if in TDS mode). Temperature
compensation is now disabled
(=0) for measurements in
USER mode.
3. User Programmable Conductivity to TDS Ratio
This feature allows you to select a custom conductivity to TDS conversion
ratio for USER mode measurements.
For example:
The conversion ratio range is 0.20-7.99 (ie., if conductivity
is 100 µS and TDS is 75 ppm, you would adjust to 0.75) (ref. Conductivity
Conversion to TDS, pg. 26).
a.
While in “USER” mode, press .
b.
Press twice (to skip over tempco adjustment), and
“
RATIO
” will appear (see Figure 4).
c.
Adjust with
or
keys until new conversion
ratio is displayed.
d.
Press
twice (to skip
over calibration adjustment)
to accept new conversion ratio.
You are now ready to measure samples with the new
conductivity/TDS ratio.
12
CAL
MCLR
MR
CAL
MCLR
T D S
CAL
MCLR
M S
MR
CAL
MCLR
Figure 3
COND
°C
% /
User
Figure 4
TDS
RATIO
User
VI. CALIBRATION
A. Calibration Intervals
Generally, calibration is recommended about once per month with
Conductivity or TDS solutions (ref. Calibration Intervals, pg. 19).
B. Rules for Calibration in the Ultrameter
1. Calibration Steps
a. Starting Calibration
Calibration is begun by pressing while measuring Conductivity or
TDS. Measuring continues, but the CAL icon is on, indicating calibration
is now changeable.
The reading is changed with the and
to match the known
value. The calibration for each of the 4 solution types may be performed
from either conductivity or TDS mode.
b. Calibration Steps
Depending on what is being calibrated, there may be 1, 2 or 3 steps to
the calibration procedures.
The
becomes an “ACCEPT” key. At each point, pressing
accepts the new calibration value and steps you to the next adjustment
(or out of CAL mode if there are no more steps).
To bypass a calibration step, just press
to accept the present value
as is.
13
In the first five sections, you have learned all
you need to make accurate measurements. The
following sections contain calibration, advanced
operations and technical information.
KCl, NaCl or 442
User
Cond
Gain only
Tempco, then Gain
Res
Done in conductivity
Done in conductivity or TDS
TDS
Gain only
Tempco, Ratio, then Gain
CAL
MCLR
M S
MR
CAL
MCLR
CAL
MCLR
CAL
MCLR