YSI 3200 - Manual (Page 20)

System Configuration and Operation Section 3
3.150
uS/cm
Km=1.124
25.0°C
11:33
AM
24.38°
C
1.50%/°C
T CELL
CELL SETUP DIAG RANGE
OPERATION
Current cell constant
Offset
When measuring conductance below 10uS (resistance above 100K
Ω), the insulation resistance of
the cell leads may be a source of error. This error may be greatly reduced by allowing the 3200 to
calculate and store a zero offset value.
From the Calibrate K menu, press the [OFFSET] soft key to enter the Offset menu.
OFFSET
Offset value is only used below 10uS
0.0000uS offset
To measure, connect a clean, dry cell
and press MEASURE
REMOVE MEASURE
Current offset
To measure and store the offset for the current cell in the currently selected configuration,
connect a clean, dry cell to the 3200, then, press the [MEASURE] soft key. The current offset is
displayed on the screen.
OFFSET
Offset value is used below 10uS
0.0015uS offset
To measure, connect a clean, dry cell
and press MEASURE
REMOVE MEASURE
Current offset
To remove a stored offset (set the offset to zero), press the [REMOVE] soft key.
Send
From the Calibrate K menu, the [SEND] soft key may be used to send the current cell constant
data to a computer or serial printer via the RS232 port.
3.3 TEMPERATURE COMPENSATION
There are four options for temperature compensation on the YSI 3200.
1. Directly enter a linear temperature compensation factor (0 - 10%/°C)
2. Select a standard non-linear compensation curve (ultrapure, natural).
YSI Incorporated Model 3200 16