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Uehling Instrument Company - Liquid Leak Detector sensor ultrasonically recognizes the attenuation and dielectric properties of the liquid or air present. Digital sampling insures precise interpretation. The resulting output signal identifies the condition sensed.

When an alarm condition is sensed by Level Alert, an audible alarm sounds and a message pad flashes to inform the user why the alarm has sounded. A reset push-button silences the audible alarm. Thereafter, the message pad remains illuminated until the alarm condition has been corrected. Should another channel(s) sense an alarm condition, the audible alarm will again sound and the corresponding message pad will flash until reset/acknowledged by the operator. Each channel also has an output relay for actuating other relays, pumps, valves, etc.

Model ULD-492P98 Specifications Number of Channels: Model ULD2-492P98 SENSOR WATER SPARE* OIL/GAS 4 with LED illuminated message pads Leak / Liquid Presence Detector / Liquid Identifier Model ULD1-492P98 SENSOR WATER SPARE* PRESENT 4 with LED illuminated message pads Leak / Liquid Presence Detector * Spare channel may be used for high level or other alarm requirement. Housing Size: 1/8 DIN Panel Mount (Mounting Opening 3.63 X 1.78 inches) Alarm Visual: Message flashes until alarm is silenced/reset and thereafter remains illuminated until alarm condition has been corrected. Alarm Audible: Internal horn and relay with rear terminals for external horn, strobe or bell. (Contacts rated 0.5 amps @ 115 VAC, non-inductive). External Horn Connection: Yes - (0.5 Amp @ 115 VAC) N.O. relay contacts Internal Reset: "S" (silence/reset) Push-button on front panel. External Reset: Yes -- rear terminal connections for remote reset push-button. Power: 115 VAC, (220 & DC optional) Power Indicator: LED Electrical Connection: Rear screw terminal block Expansion: Yes -- Unlimited. Units may be combined to add additional channels. Test Function: Yes -- front panel push-button. Up key tests channels 1 & 2. Down key tests channels 3 & 4 Output Relays: 4 SPDT dry contact relays. Each channel simultaneously actuates an output relay when message pad is illuminated. (0.5 amps @ 115 VAC, non-inductive; 1 amp @ 30 VDC.) Sensors: Intrinsically safe, detects and identifies Water, Oil/Gasoline and other Liquids, Chemicals, Reusable, NO CALIBRATION REQUIRED Repeatability: 2mm or better Temperature -20 to 160F Cable Length 5000 Feet Max. - Supplied with 10 Feet

Notes:

Enclosed Systems: Uehling Tank-O-Meter® systems may be combined with Level Alert Alarms. Enclosures for single or multiple gauges and alarms are factory wired & tested to NIST traceable standards. Virtually any combination is possible to meet site-specific requirements.

Centrally located enclosures provide convenience and cost savings by reducing gauge/alarm installation time and manufacturing costs. Enclosures are available for NEMA 1/12 General purpose/Oil Tight, NEMA 4 (4X) Watertight and NEMA 7 Explosion proof locations. Bulletin ULD-492P98 9/99