IRT Integrated Rectifier Technologies Inc.

- uDL1 Data Logger


The uDL1 is a high accuracy, low cost data logger designed specifically for cathodic applications. This simple to use device comes in a waterproof enclosure equipped with a large LCD to locally verify readings. A long life rechargeable battery allows this device to capture readings for over 6 months with a measurement storage capacity of 500,000 readings. Its small physical size and wide operating temperature range make the uDL1 ideally suited for general field use.

  • Very small size 3.3” x 1.6” x 0.9” (84mm x 40mm x 23mm) allows use within standard CP test stations
  • Waterproof enclosure for harsh environments
  • Wide operating temperature range -4°F to +140°F (-20°C to +60°C)
  • Integral rechargeable battery provides over 6 months or 500,000 readings per charge
  • 3½ digit wide-temperature LCD for local voltage monitoring with no additional equipment
  • Automatically powers on and begins recording when measurement cable is connected
  • One galvanically isolated bi-polar analog input channel configurable for +/-200mV, +/-20V, and +/- 200VDC ranges
  • Measures both DC and AC voltages
  • DC measurements have >65dB of 50/60Hz AC rejection for stable and accurate readings
  • AC measurements are in true RMS
  • High impedance input capable of directly measuring a reference cell
  • Measurement accuracy +/-0.5% DC and +/-1.0% AC FS over -4°F to +140°F (-20°C to +60°C)
  • Lightning and surge protected
  • Non-volatile 500,000 measurement storage memory (5.7 days @ 1 reading /sec, 345 days @1 reading / min)
  • All measurements are time and date stamped
  • User configurable sample rate from 1 per second to 1 per day USB connection to PC laptop for configuration, data uploading and battery charging
  • Optional: Fast sample mode of DC voltages as fast as 10 readings per second
  • Optional: Internal GPS receiver for accurate time stamping of measurements
  • Optional: 1,000,000 measurement storage memory

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