Usp Function - Burkert 8285 El. COND Mode D'emploi

USP function

Monitoring of ultrapure water in the pharmaceutical industry
(To configure: Select Parameter setting COND module)
Contact K1 (Administrator)
Usage
NAMUR maintenance
Variable
NAMUR function check
Limit Limit
Rinse contact
Hysteresis
Parameter set 2 active
Direction
USP output
Contact type
Abort
According to the "USP" directive (U.S.Pharmacopeia), Appendix 5,
Section 645 "Water Conductivity" the conductivity of pharmaceutical waters
can be monitored online.
To do so, the conductivity is measured without temperature compensation
and compared with limit values. The water is usable without further test
steps when the conductivity is below the USP limit.
Reduced limit:
The USP limit can be reduced down to 10 % (Parameter setting).
USP function (Administrator)
USP function
Reduced limit
Monitoring
Abort
USP function
USP limit value
Reduced limit value
Conductivity
0.055 µS/cm
Return
USP function, define switching output
0.003 mS/cm
18.8 °C
When a COND module is installed, one of the
floating relay outputs of the BASE module (K1,
K2 or K3) can be assigned to the USP function.
• Select parameter setting:
• Administrator level (function check active!)
• Module BASE: Define contact "Usage"
OK
Select USP function
0.002 mS/cm
18.7 °C
• Select parameter setting:
• Administrator level (function check active!)
On Off
100%
• Module COND: USP function
Off
Failure
Maint.request
OK
USP function. Diagnostics
0.055 µS/cm
25.0 °C
• Select diagnostics:
• Module COND
25.0 °C
1.300 µS/cm
• USP function: Display of USP limit,
reduced limit, conductivity
1.040 µS/cm
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