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PR-23 instrucon manual

8.3 Wash

8.3.1 Message EXTERNAL HOLD

The concentration measurement is on HOLD due to an external switch closure. For

explanation, see Section 6.3.2, “Coniguring input switches”.

8.3.2 Messages PRECONDITIONING, WASH, RECOVERING

− PRECONDITIONING: An optional preconditioning relay is closed, see Section 6.5

“Coniguring prism wash”.

− WASH: The internal wash relay is closed, see Section 6.5 “Coniguring prism wash”.

− RECOVERING: The concentration measurement is on HOLD during a preset time.

8.3.3 Message PRISM WASH WARNING

No dip of n

value during prism wash. The accepted size of the dip is set as the WASH

CHECK function, Section 6.5, “Coniguring prism wash”. See also Section 5.1.3 “Testing

prism wash”.

8.3.4 Message PRISM WASH FAILURE

No dip of n

value during any prism wash during wash tolerance time. The wash tol-

erance time is set in wash parameters, see Section 6.5.2, “Setting prism wash parame-

ters”. See also Section 5.1.3 “Testing prism wash”.

8.3.5 Message EXTERNAL WASH STOP

Tells that wash action is prevented because an EXTERNAL WASH STOP switch is closed,

see Section 6.3.2 “Coniguring input switches”.

− NO SAMPLE (Section 8.2.6) indicates empty pipe

8.3.6 Message LOW TEMP WASH STOP

Tells that wash action is prevented because of LOW TEMP: low process temperature

indicates empty pipe. To set the limit, see Section 6.5 “Coniguring prism wash”.

8.3.7 Message NO SAMPLE/WASH STOP

Tells that wash action is prevented because of NO SAMPLE: the process pipe is empty

and the prism is clean.

K-Patents PR-23 User Manual

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