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LTI-904 |
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 Single Channel LTI-904 Leak Test |
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The LTI-904 leak test instrument is a one or two channel test system that operates on clean dry shop air to accurately test for product leaks. |
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| TEST METHODS | |||
| MASS FLOW | |||
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The LTI-904 displays corrected airflow readings through the use of a mass flow transducer. This state-of-the-art technology provides test results, which are independent of daily changes in barometric pressure and ambient temperature. This leak test instrument measures the leakage or flow of air through the part under test at a specific test pressure. When the leak test is initiated this instrument automatically pressurizes the part, allows the air pressure within the part to stabilize, and measures the actual leakage through the part. The leakage or flow is displayed in actual engineering units.
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| PRESSURE DECAY/CHANGE | |||
| Two pressure decay/change methods are available depending upon the specific application. Applications with a high leak rate specification or a small test volume utilize a gage-pressure-decay test method. Applications with a low leak rate specification or a large test volume will use a pressure-differential-decay test method. With either method this leak test instrument pressurizes the test part, allows the air pressure within the part to stabilize, and measures the decay/change in pressure. | |||
| SETUP & OPERATION | |||
The LTI-904 leak test instrument is easy to setup and operate. The setup procedure is menu driven in response to operator inputs to the front-mounted touch screen display. A maximum of six (6) limit tables for each channel are included with this unit. Setup parameters for these tables include fast fill pressure and tolerance, test pressure and tolerance, cycle times, accept/reject parameters, consecutive reject set point, orifice qualification set points, and various feature flags. Transducer calibration is also menu driven. |
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SYSTEM ENCLOSURE |
The LTI-904 is housed in multiple enclosures linked by an electrical cable(s). One (1) electrical enclosure and up to two (2) pneumatic enclosures are provided. The electrical enclosure contains the Allen Bradley SLC 5/04 processor, Allen Bradley PanelView touch screen display, power supplies, push buttons, and indicator lights. Ports, internal to the enclosure, are available for one (1) data highway, one (1) RS232 printer port, and one (1) optional DB9 for a bar code reader. The pneumatic enclosure(s) contain the pressure and leak transducers, regulators, and valves. Ports are provided on each enclosure for air and power connections. The standard color for the LTI-904 is white. |
| DIMENSIONS | |
Control/Pneumatic Enclosure Pneumatic Enclosure |
18" high x 18" wide x 10" deep 16" high x 18" wide x 10" deep |
| WEIGHT |
Control Enclosure Pneumatic Enclosure |
50 pounds 25 pounds |
ENVIRONMENTAL CONDITIONS |
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| Operating Temperature Storage Temperature Test Part Relative Humidity |
35-130°F (2-55°C) 35-150°F (2-66°C) Room Temperature 0-95% Non-Condensing |
| POWER REQUIREMENTS | |
| Input Power (Selectable Internally) Frequency Current |
105-120VAC or 220-240VAC 50 or 60 Hz 3 amps maximum |
SHOP AIR REQUIREMENTS (CLEAN, NON-LUBRICATED, DRY AIR) |
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| Pressure Test | Test Input Pressure | 125 PSIG maximum (STD) |
| Test Pressure | 90 PSIG maximum (STD) |
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| Vacuum Test | Input Vacuum | 30 in Hg maximum (STD) |
| Test Vacuum | 25 in Hg maximum (STD) |
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CONTROL INTERFACE |
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Inputs |
(3) BCD Remote Start/Stop per Channel | 115 VAC or 24 VDC |
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| Outputs | (1) End of Test Signal per channel | 115 VAC or 24 VDC |
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| (1) Accept per Channel | 115 VAC or 24 VDC |
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| Printer | (1) Serial Port Available | Data Output (ASCII) |
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| Host Computer | (1) Data Highway | Plant Communications |
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| Barcode | (1) Serial Port Available | Data Collection |
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PERFORMANCE (FLOW RANGE AND SCALING)
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