Metrohm 732 IC Detector User Manual

Page 62

3.3 Putting into operation

732 IC Detector / 733 IC Separation Center

ENTER

⇒

Confirm the selected measuring range by pressing the

key.

>PARAM/detector
full scale: 200

µµS/cm

The next inquiry which appears concerns the full-scale

range. The full-scale range (operating range) is used to set

the desired sensitivity for the display and analog output of

the measuring signal during the recording of the chroma-

togram. This value is set using the key,

but not until later (see section 3.4, point 2

2).

ENTER

⇒

Confirm the preset value corresponding to the measuring

range by pressing the key.

>PARAM/detector
temp.coeff.: 2.5 %/°C

The next inquiry concerns the temperature coefficient for

the automatic conversion of the conductivity from the oper-

ating temperature of the measuring cell to the reference

temperature of 20° C. The preset value of

2.5 %/°C

ap-

plies to anions, the value applicable to cations

1.5 %/°C

can be selected by pressing the key between

and

–

. To ensure

that a positive signal is always outputted for peaks, nor-

mally

is used for the determination of anions and

–

for that of cations.

ENTER

⇒

Confirm the correct polarity

for our example with the

key.

>PARAM/analog output
offset: 0 %fs

The second inquiry concerns the offset of the analog

output signal. This offset of the zero point of the conductiv-

ity can be set to 10 % or 50 % of the full-scale range using

the