Ph Correction; Limits - ProMinent DULCOMETER D1C Operating Instructions Manual

Restricted Operating Menu / Description
Error message
Buffer distance too small
Zero point low
Zero point high
Slope low
Slop high
Measured value pH unstable
Measurde value °C unstable

pH correction

Access to all setting menus can be blocked with an access code !
Only with correction variable pH
correcting value
setting ?
Correction value

Limits

Access to all setting menus can be blocked with an access code !
limits
setting ?
Type of limit trans-
gression Limit 1:
Limit 2:
Limit value Limit 1:
Limit 2:
Condition
∆Buffer < pH 2
< -60 mV
> +60 mV
<40 mV/pH
>65 mV/pH
∆U > 3 mV to t > 60 s
correcting value
pH
manual
4.50 pH
Possible values
Inital value Increment
off
manual
automatic
limit 2
1.50 ppm
limit 1
0.10 ppm
Possible values
Initial value Increment
upper
lower lower
upper off*
0.5 ppm 0.01 ppm
1.5 ppm 0.01 ppm
Comment
During calibration procedure:
Recalibrate buffer 2!
Return to permanent display:
Basic metering load
"
"
"
Standard metering
Lower value
off
upper
lower
Lower value
0.00 ppm
0.00 ppm
Upper value
When selecting manual
pH correction, the pH value
must not change more than
±0.1 pH units
Upper value
Limit transgression
when exceeding or
dropping below value
100.00 ppm *only with limit relay
100.00 ppm
D1C2-Cl-033-GB
Remarks
D1C2-Cl-014-GB
Remarks
11