K-Patents PR-23 User Manual

6 Conguraon and calibraon
57
6.5.2 Seng prism wash parameters
To set the prism wash parameters for a given sensor, irst select the sensor, then select
5 CALIBRATION from the Main menu, and then 4 PRISM WASH. This menu contains the
alternatives (factory settings are given in parentheses):
1 PRECONDITION TIME 0–30 s (0 s)
2 WASH TIME 0–30 s (3 s)
3 RECOVERY TIME 0–30 s (20 s)
4 WASH INTERVAL 0–1440 min (20 min)
5 WASH CHECK MODE (Disabled)
6 HOLD DURING WASH (Active)
7 TEMP LIMIT ACTIVATION
8 TEMP LIMIT VALUE °C
9 EMPTY PIPE CHECK (Active)
0 MORE ...
1 WASH nD LIMIT
2 WASH TOLERANCE TIME (0 min)
The prism wash cycle: See Figure 6.16 and Section 6.5.1. The timing of the wash cycle
is controlled by the WASH INTERVAL, PRECONDITION TIME, WASH TIME and RECOVERY TIME
settings. If the WASH INTERVAL is set to zero, the wash can be initiated only by using
the manual wash or remote wash request.
If the PRECONDITION TIME is zero (or there is no relay conigured for preconditioning),
the preconditioning phase is skipped. If the WASH TIME is zero (or there is no relay for
wash), the wash functionality is completely disabled.
The recommended wash times and wash medium pressures are given in Section 4.2.1,
“Recommended wash pressures and times”.
Wash check: The prism wash check monitors automatically that the wash really has
an effect on the prism. In the WASH CHECK STANDARD mode, prism wash is accepted
if the refractive index n
D
either falls below wash nD limit (default 1.34) at NORMAL
OPERATION or NO SAMPLE occurs. This is the indication of a successful wash with wa-
ter or steam.
If the wash is not accepted, the diagnostic message PRISM WASH WARNING (see Sec-
tion 8.4) will appear. If no wash is accepted during wash tolerance time, the message
becomes PRISM WASH FAILURE. Both messages and the wash tolerance counter are re-
set by a successful wash.
The WASH CHECK AUTOMATIC WASH CUT mode differs from the standard mode by stop-
ping the wash 2 seconds after the n
D
falls below the limit.
To stop the measurement for the duration of the prism wash, choose 6 HOLD
DURING WASH and in that menu activate the hold function. The CONC reading and
mA output are held in the value they had immediately before starting the wash cycle.
To activate (or deactivate) a temperature limit, choose 7 TEMP LIMIT ACTIVATION
and then the appropriate command in the menu.

K-Patents PR-23 Specifications

General

Brand	K-Patents
Model	PR-23
Category	Measuring Instruments
Language	English