TYPICAL SPECIFICATION
FOR DILUTION SYSTEM

GENERAL SCOPE:
Dilution system shall use a system of automatically creating small weight based batches on demand to achieve dilution accuracies of up to 1/10th of 1%.  Dilution system shall account for the difference of the specific gravity of water and the chemical used.  The system shall use a microprocessor based controller to control the opening and closing of a water valve and chemical transfer pump to create the diluted batch.  Dilution system shall be totally flexible and capable of diluting any strength of neat chemical solution to as low as a 0.1% chemical solutions.  Dilution system shall be preassembled, calibrated and tested prior to delivery.  Complete dilution system shall include all necessary piping, valves, plumbing connections, pumps, dilution tanks, weight sensors, controller, and relays necessary for sole source responsibility.  Neat chemical shall be delivered in approximately___ percent _________ (chemical name) and shall be diluted to approximately ______ percent solution strength.  System shall have a maximum capacity of _________gallons/liters of diluted chemical per day.  

Optional mixers, water softeners and HypoTrak™ analyzer are available.  Specify if required.

CONTROLLER OPERATION:
Controller keypad shall have the ability of full password protection to restrict unauthorized operation of the dilution system.  Start and Stop keys shall initiate and terminate the dilution process. In the fully automatic mode, system shall require the operator to input only neat and dilute chemical strengths and the controller shall calculate required target amounts automatically.  If the neat chemical target is exceeded, controller shall automatically adjust the water input in order to maintain the desired dilution strength.  For chemicals that give off an exothermic reaction, provisions shall be available to keep heat build up to a minimum.  System shall have the capability of complete manual override of the dilution process. 

ALARMS, OUTPUTS AND INVENTORY MANAGEMENT:
Controller shall have the capability of fully monitoring the dilution process.  All alarms shall be displayed on the controller screen and a normally open, dry contact relay shall be available to indicate the following alarm conditions: Slow neat chemical transfer, slow water transfer, slow dilute chemical feed, maximum daily chemical usage, high dilution tank level and batch strength not available.  An alarm log shall keep track of the time and date of the most recent 10 alarm conditions.  A 4-20mA signal shall output the amount of the remaining dilute chemical, remaining neat chemical and whether the system is activated or not.  In addition, controller shall report locally all usages, feed rates, and remaining quantities of diluted chemicals.  Controller shall also convert these values to a “pure” value in order to evaluate the actual “pure chemical by weight”.  Dilution system shall be the Merlin Automated Onsite Dilution System as manufactured by Force Flow, 1150-D Burnett Ave, Concord CA 94520 (www.forceflow.com), or equal.

WORDFILE:  _WEB/SPCS/INDICATOR/SPCMERLIN.DOC  02/13/03
FORCE FLOW  1-800-893-6723
FAX:  925-686-6713  www.forceflow.com  info@forceflow.com
MERLIN IND