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ENR-4000 Digital Enamel Rater

The ENR-4000 Digital Enamel Rater is a complete redesign of the industry leading CMC KUHNKE Enamel Rater. It tests the coverage of the enamel coating inside food and beverage cans and ends and it  accurately and quickly measures the Enamel Rating and Lacquer Permeability.

Measures: Enamel Rating, Lacquer Permeability


The Enamel Rater ENR-4000 is the new standard for porosity measurements. A high-precision instrument with a large TFT display that can be switched on with a graph of the current measurement.

It showcases an elegant design and top functionality in a stainless steel housing, splash-proof protected for years of reliable service as well as a two channel option with seperate settings.


  • 100 Ohm calibrated test resistor available for calibration
  • Fixtures available for 3-Piece Cans, 2-Piece Cans, Aerosol Cans, Can Ends, Side Stripes, Bottle Caps, Flat Sheets and Tubes
  • Fill level control
  • Reverse Polarity to identify location of metal exposure
  • CE Certified
  • Full-sized color touchscreen
  • Current Measurement graph option
  • Two connector ports for test fixtures
  • Two seperate test channels

Technical Details

Range: Adjustable between from 2.0 to 10.0V in steps of 100mV. (Precision 1%) up to 250mA (Automatic range switching)
Electrical Required: 120 / 230 VAC 50-60Hz
Measurement Units: mA
Output Interface: RS232
Languages: English, German
Dimensions: 230mm x 205mm x 80mm
(9 in x 8 in x 3 in)
Resolution: (0-250mA) 10±A
Accuracy: ±0.05 mA
0.2% ± 1 L.S.B.
Product Spec Sheet: Download Spec Sheet


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Enamel Rater ENR-4000

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