Model 4500 Premier Dust and Opacity Monitor13A2 Installation DiagramThe Model 4500 Premier Dust Opacity Monitoring System showing all components installed.1 Model 4500 Premier Transceiver2 Model 4500 Premier Retro-Reflector3 Termination Box4 Air Blower Unit with Filters5 Umbilical Cable6 Customer Alarms7 Instrument Power Input8 Input and Output Signals9 Blower Pressure Switch Trip Output131 23459CAUTIONDANGER7810OP ACITY & DUS T MONITORCALIBRATESYSTEM OKSPAN CALIBRATEZER O CALIBRATEALARM1161214141510 Control Room Unit (CRU)11 Control Room Unit (CRU) Power Input12 Blower Power Supply13 Retransmitted alarm contacts14 External power isolator with overcurrentprotectionImportantAn external circuit breaker incorporating over-current protection or a powerisolator and fuse must be fitted.
