K-Patents PR-01-S User Manual
Page 92
INSTRUCTION MANUAL FOR K-PATENTS PR-01-S (-AX/FM/CS)
DOCUMENT/REVISION No. INM 1/14
Effective: May 15, 2009
90
Compatibility
The External current unit can not be used with models preceding PR-01-S. For PR-01-S program version
2.1 or higher is required, see Section 2.9.
Figure 10.10.
External output unit, component layout.
10.2. DIVERT CONTROL UNIT DD-01
The K-Patents Digital Black Liquor Divert Control System is used in the wood pulp industry to provide a
divert signal preventing black liquor with dangerously low solids to reach the black liquor burners. The
system is built strictly according to the principles of Recommended Good Practice "Safe Firing of Black
Liquor in Black Liquor Recovery Boilers" (BLRBAC, August 1982, Revision April 1994).
Typically a Black Liquor Control System contains the following equipment:
– Two K-Patents Process Refractometers complete with sensor and Indicating transmitter.
– Two Isolation valves to allow safe removal of the refractometers from the pipe at full flow and
pressure. A wash nozzle is included.
– One Divert Control Unit.
– One alarm horn (not supplied by K-Patents)
– Two steam control valves and four check valves for automatic prism wash.
– One spare sensor.
A separate Manual is provided for the Divert Control System.