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conduit reserved for the exclusive use of this <br />field contact wiring. <br />The field contact wiring for any particular field <br />contact is to be of such size that the total loop <br />resistance is less than 1,000 ohms. In no case <br />shall the cable from the X53 Interface Chassis to <br />the field contacts be more than 9,000 feet long <br />in a Group C or D hazardous location, or more <br />than 6,000 feet long in a Group A or B <br />hazardous location. <br />The system is to be grounded at the input <br />voltage terminals. The ground connection shall <br />be such that the resistance to ground shall be <br />less than 1.0 ohm. <br />MIX910.1 <br />The Ronan Model X76S Leak Detector Monitor <br />System can be configured to meet the different local <br />and state codes for underground storage by proper <br />selection of sensors and monitor modules. For <br />example, a particular local code and/or type of facility <br />may require leak detection of a tank annulus. The <br />monitor system would consist of the following items: <br />(V+ =24 VDC, +25%, —10% unless otherwise noted <br />Model X76S-( ) <br />4 No of alarm inputs <br />(1 thru 4) max -4 <br />Accessories <br />Qty. Type <br />LS -3 (Vertical liquid level sensing probe) <br />LS -7 (Horizontal liquid level sensing probe) <br />LS -10 (Reservoir liquid level system) <br />HV Vapor Sensor (Specify product <br />being monitored) <br />9.1 Spare Parts <br />Condition <br />Model Number <br />Description <br />LS -3 <br />Vertical liquid level <br />Alarm module supply current <br />sensing probe <br />LS -7 <br />Horizontal liquid level <br />26.0 <br />sensing probe <br />LS -10 <br />Reservoir liquid level system <br />HV <br />Vapor sensor <br />X17AM-2000 <br />Sensor alarm module <br />X53BA-2000 <br />Intrinsically safe barrier <br />115 -24 -20 -IS <br />Intrinsically safe power supply <br />Parameter <br />Condition <br />Min. <br />Typ. <br />Max. <br />Unit <br />Alarm module supply current <br />Excluding input current <br />12.1 <br />19.3 <br />26.0 <br />mA <br />Alarm module input current <br />Closed contact from V+ to FC <br />18.8 <br />24.8 <br />38.9 <br />mA <br />I.S. interface module supply <br />Open contact (both inputs) <br />0 <br />0.1 <br />mA <br />current <br />Closed contact (both inputs <br />42.0 <br />51.9 <br />65.0 <br />mA <br />I.S. field contact voltage <br />Open contact <br />V+ <br />30 <br />V <br />Closed contact <br />0 <br />0 <br />2.0 <br />V <br />I.S. field contact current <br />Open contact <br />0 <br />0.2 <br />mA <br />Closed contact <br />0.65 <br />1.15 <br />2.0 <br />mA <br />I.S. field contact wiring resistance <br />Measured between field contact terminals <br />1 k <br />ohm <br />of each input <br />Pushbutton contact voltage <br />When not pressed <br />9.86 <br />9.99 <br />V <br />When pressed <br />0 <br />V <br />Pushbutton contact current <br />When not pressed <br />0 <br />0.2 <br />mA <br />When pressed <br />0.72 <br />0.93 <br />1.06 <br />mA <br />Pushbutton wiring resistance <br />Measured between pushbutton <br />200 <br />ohm <br />terminal and V— <br />Audible output voltage <br />Off <br />V+ <br />30 <br />V <br />On <br />1.2 <br />1.95 <br />V <br />Audible output current sink <br />Off <br /><0.01 <br />mA <br />On <br />500 <br />mA <br />NOTES: 1. All voltages are defined with respect to V—. <br />2. Typical values are at <br />TA= 250C, nominal voltages with field wiring <br />resistance= 100 ohms. <br />0 <br />