LAWLER MANUFACTURING CORP

LAWLER MANUFACTURING CORP 1.0 PH MODEL 390-4 IS A 4 TEST POSITIONS AGITATED LIQUID BATH CONFORMING TO ASTM D665 D3603 D5534 NACE TM-01-72 AND OTHER SIMILAR TESTS. A TIMER ALERTS THE OPERATOR TO METHOD CRITICAL STEPS REQUIRING ATTENTION. THE BATH'S TEMPERATURE IS MAINTAINED BY A MICROPROCESSOR BASED PID CONTROLLER WITH SET POINT AND BATH TEMPERATURE DISPLAY. A SECONDARY HIGH TEMPERATURE LIMIT SWITCH PREVENTS OVER HEATING IN THE EVENT OF PRIMARY CONTROLLER FAILURE. IN ADDITION A FLOAT SWITCH INTERRUPTS POWER TO THE HEATERS IN THE EVENT OF LOW BATH LIQUID LEVEL. THE STAINLESS STEEL BATH HAS DRAIN FOR EASY REPLACEMENT OF THE BATH MEDIUM. THE TEST BEAKERS REST ON A PERFORATED SUPPORT RACK AT THE TEST SPECIFIED LEVEL. THE STAINLESS STEEL STIRRERS' SPEED IS ADJUSTABLE FORM 0 TO 1100 RPM ARE DRIVEN BY A SYNCHRONOUS MOTOR TO ASSURE EXACTLY 1000 RPM SPEED. THE INDIVIDUAL STIRRERS ARE BELT DRIVEN. A DIGITAL TACHOMETER IS PROVIDED DISPLAYING THE ROTATIONAL SPEED OF THE STIRRERS. MOUNTED ON THE CONTROL PANEL IS A POWER SWITCH FOR TURNING THE STIRRERS ON AND OFF WITHOUT DISTURBING THE POWER TO THE BATH. INDIVIDUAL STIRRERS HAVE THE ABILITY TO BE LIFTED OUT OF THE TEST BEAKER BY SIMPLY LOOSENING THE KNURLED HOLDING NUT AND LIFTING FROM THE BEAKER. WHEN LIFTED THE STIRRER SHAFT PROTRUDES THROUGH THE TOP OF THE APPARATUS ALLOWING FULL AND EASY ACCESS TO THE TEST BEAKER. A CLEAR PLASTIC SAFETY GUARD ON THE FRONT OF THE APPARATUS PROTECTING THE OPERATOR FROM THE ROTATING STIRRER SHAFTS.