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Sensor Life: 5 years minimum Zero Drift: Less than 5% per year Operating Temperature: —40° to 165°F (-40°to 75°C) Electrical Classification: Class I, Division 1, Groups B, C and D; hazardous atmosphere UP Approved: File E100826 Cable Length: 25 feet; 3 -conductor, number 20 AWG shielded; max. length 3,000 feet 7.6 Tank Leak Sensor, Model LS -3 Housing: 304 stainless steel Switch: Type: Single pole, single throw N.C. Rating. 10 VA, 110 to 240 VAC Stem and float material: Fuel -proof polysulfone Operating Temperature: 0 to 225°F (-18 to 107 °C) Pressure: 50 psi maximum Leads: 22 AWG UL Approved: File E86797 7.7 Tank Leak Sensor, Model LS -7 For fiberglass tank. Housing Material: ABS Mounting: Yi" NPT with %" THD and lock nut Pressure: 150 psig at 70°F (21 °C) maximum Liquid SpG:.70 minimum Switch: Type: Single pole, single throw N.C. Rating: 10 VA, 110 to 240 VAC Leads: 22 AWG UR Approved: File E86797 7.8 Reservoir Type Tank Leak Sensor, Model LS -10 Reservoir: Volume: Two gallons (7.57 liters) Dimensions (height x width x depth): 13 x 11 x 11 inches (33.02 x 27.94 x 27.94 cm) Material: Polyethylene plastic Switch: Type: Single pole, single throw Rating: 10 VA, 110 to 240 VAC Stem and float material: Polysulfone Operating Temperature: 0 to 225°F (-18 to'107°C) Pressure: 50 psi maximum Leads: 22 AWG TApproved: File E86797 5 8.0 SERIES X53 INTRINSICALLY SAFE INTERFACE SYSTEM 8.1 Applications The Series X53 Interface Chassis are designed to handle the following functions associated with intrinsically safe annunciators and logic systems. A method of accepting contact and transistor switch inputs from the general-purpose area and providing an approved contact output, so that the output control signal can be incorporated into the wiring to the approved intrinsically safe annunciators. EXAMPLE: Miscellaneous contacts from general-purpose devices in the control panel that are required to actuate alarm points in an intrinsically safe annunciator. A method of accepting intrinsically safe input contact signals from the hazardous area via an approved barrier to provide output contacts that can be used for operating general-purpose annunciators or logic systems. A method of transmitting contact output signals from either a general-purpose area or Class I, Division 2 area to provide output contact signals in intrinsically safe loops. EXAMPLE: Miscellaneous contacts in remote control panels that are required to provide an approved output contact for use in intrinsically safe loops. EXAMPLE: Isolation for contact switches that require an interface to permit switching of field - powered, intrinsically safe loops. 8.2 Mechanical Features of Chassis Input and output terminals are physically separated. The input terminal compartment has conduit knockouts, as do the output terminal compartments and power wiring input. No passageways exist between the two compart- ments, so it is impossible to inadvertently intermix the input and output wiring. The below -chassis printed circuits are designed so that the input leads come from one end of the printed circuit board connector and the output leads come from the other end. 8.3 Special Installation Instructions Equipment and associated wiring approved as intrinsically safe may be installed in any hazardous location for which it is approved. The provisions of Articles 500-517 of the National Electrical Code need not apply to such installations. The Ronan X53 Interface Chassis may be installed in a Class I, Division 2 or non -hazardous area. As the intrinsically safe portion of the system is made up of the field contacts and associated wiring, all field contact wiring is to be run in