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SPECIFICATIONS <br />PRODUCT NUMBER: <br />17-100A. <br />PRODUCT NAME: <br />Soil Sentry. <br />DESCRIPTION: <br />Aspirated vapor type under- <br />ground storage tank leak <br />detection system. <br />BASIC OPERATING COMPONENTS: <br />Bulk semiconductor (MOS) <br />vapor sensor. <br />Diaphram type aspirator <br />pump. <br />Solenoid control valves. <br />System microprocessor. <br />Impact printer. <br />Vapor transport tubes. <br />Slotted PVC pipe vapor <br />sample colection probes. <br />VAPOR SAMPLING SYSTEM: <br />Air sample drawn from each <br />probe sequentially, carried <br />to function module, passed <br />over MOS sensor, and <br />exhausted from system by <br />diaphram type aspirator <br />pump. <br />SAMPLING FREQUENCY: <br />Samples taken at eight hour <br />intervals from each <br />active probe location <br />during normal automatic <br />operation. <br />On demand sampling in <br />manual operating mode. <br />VAPOR SENSOR: MOS type. Max. <br />sensitivity - 25 ppm. <br />SAMPLING LOCATIONS: <br />1 to 12 sampling ports <br />(switch selectable) plus an <br />additional location for a <br />calibration probe. 500 foot <br />maximum distance from probe <br />to function module. <br />TRANSPORT LINES: <br />1/4 -inch polyethylene tubes <br />or similar material. <br />PROBES: <br />3/4 inch i.d. slotted PVC <br />pipe or larger standard. <br />Existing wells may be used. <br />Transport line stock when <br />monitoring annular spaces. <br />PROBE INSTALLATION METHOD: <br />Insertion of probes in back- <br />fill for single wall tanks. <br />Insertion in annular space for <br />double wall tanks. <br />ALARM SETTINGS: <br />Switch selectable from 500 <br />to 8000 ppm. System allows <br />selection of separate alarm <br />trigger points for probes <br />1 thru 8 and 9 thru 12. <br />ALARMS: <br />Intermittent tone alarm with <br />external reset button. <br />Continuous indicator lamp <br />with internal reset. <br />ALARM <br />ACTIVATION: <br />1. <br />When three successive <br />vapor samples from a <br />single sampling port <br />are above a selected <br />trigger point. <br />2. <br />When a single reading <br />is above a defined <br />critical level. <br />3. <br />When a condition is <br />identified that would <br />prevent normal system <br />operation. <br />E�] <br />4. When there is tampering <br />with the system. <br />SYSTEM SECURITY: <br />Key lock on function module, <br />seal loops, tamper alarm, <br />printed record of system <br />entry, real-time clock and <br />calendar with backup <br />battery, internal reset for <br />visual alarm. <br />PRINTER: <br />16 -character per line <br />mechanical printer. <br />PRINTED REPORTS: <br />Include but not limited to <br />date and time, all alarms, <br />power up, power inter- <br />ruption, door open, weekly <br />status, calibration/test, <br />and freeze pause. <br />FUNCTION MODULE ENCLOSURE: <br />Metal cabinet for indoor <br />installation. <br />POWER: <br />117 VAC at 50 watts. <br />