new WACO Enamel Rater II instrument test the coverage of the enamel coating
inside food and beverage cans. It displays an index of the amount of metal
exposed by incomplete enamel coverage on a clear, easily read digital LED.
The instrument applies a constant voltage across the can body and an electrode immersed in an electrolyte-filled can, and measures the resulting current. Test voltage is set at 6.3 VDC but is adjustable from 4 to 9 VDC. Operating range is 0 to 500 milliamperes with accurate resolution within 0.1ma. Remote sensing power supply ensures accuracy by measuring and regulating test voltage at the can being tested.
The instrument operates in industry standard 4 second mode, continuously, or can be programmed to measure any desired time. In 4-second mode, the display shows the reading only at 4 seconds. In
|continuous mode the reading
is displayed beside elapsed time with the 4-second reading automatically
stored in memory for recall. A simple and foolproof calibration self-test
verifies correct, accurate operation.
Location of exposed metal can be determined by reversing voltage which causes bubbles of gas to form on exposed metal for easy visual identification. Electrolyte level and can contact sensors ensure that testing begins only when can is properly filled with electrolyte solution and good electrical contact with the can has been established.
The sturdy enclosure includes a sealed-membrane keypad for protection against moisture and corrosion in the factory environment. An RS232 serial interface permits use with remote computers, printers or data collectors. 110V or 220V versions are available.
|Display:||0.4" LED, two-digit timer, four-digit milliamp readings||Remote sensing power supply:||Improves accuracy by measuring and regulating voltage at the can under test|
|Power Supply:||Constant voltage, factory set at 6.3V, adjustable 4V to 9V||Display hold:||Pauses display, returns to real time reading when pressed again|
|Range:||0 to 500 ma||Voltage rev.:||Reverses polarity of electrode to reveal location of exposed metal|
|Fill height sensor:||Electrolyte must be filled to proper level to start test||Rear Panel:||Power cord socket, RS232 serial output, Can Holder/End Panel Holder Socket|
|Can Contact Sensor:||Good electrical contact to can must be established to start test||Dimensions:||Console-6 1/4"w x 4 1/2"h
x 7 1/2"d
Can Holder-8"w x 12" h x 12"d
|Mode Selection:||4-second - automatically reads and displays 4 second reading||Shipping Dimensions:||20" x 14" x 12"|
|Continuous - displays changing readins with elapsed times, stores and recalls 4-second and programmable changes||Net Weight:||7 lb|
|Programmable - automatically reads and displays the reading at any elapsed time selected by the operator||Shipping Weight:||12 lb|
|Catalog No||Description||Catalog No||Description|
|10788-00||WACO Digital Enamel Rater II - 110V, 50/60 Hz, complete with can holder||10788-50||WACO Digital Enamel Rater II - 220V, 50/60 Hz, complete with can holder|
|10779-20||Printer - connects to Enamel Rater II for automatic recording of data, 110V, 50/60 Hz||10788-17||Cable adapter / foot switch - required to connect WACO End Panel Holder to Enamel Rater II|
|10788-19||Test resistor-reads 6.3 ma||10788-20||Test resistor-reads 12.6 ma|
|10788-25||Test resistor-reads 126 ma||10788-30||Test resistor-reads 252 ma|
The WACO End Panel Holder can be used with any WACO Enamel Rater to test for metal exposure on can ends. The test is performed in the same manner as on a can. Electrolyte is added to the plastic cup, the can end is fitted onto the beveled end of the cup, and a vacuum is applied to hold the end securely on the cup.
|When the cup is inverted, the elctrode and can end become
immersed in the electrolyte and the reading is displayed on the Enamel
The WACO End Panel Holder consists of a lucite cup mounted to rotate on its horizontal axis. The cup is beveled to make a tight seal on the can end. An electrode and vacuum connection are mounted within the cup. On the bakelite base a vacuum stopcock and a moveable contact arm, which completes the electrical circuit when the assembly is inverted. A cable adaptor footswitch (#10788-17) is required to connect a WACO End Panel Holder to the WACO Digital Enamel Rater II.
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