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HT Italia XL422 3-Phase Current Datalogger

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The XL422 is a 3 phase current data logger able to perform TRMS AC measurements and recordings of current up to 2500A. This instrument has a sophisticated memory algorithm which allows it to record for up to 1 year.

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HT Italia XL422 Three-phase Current Data Logger

The HT Italia XL422 performs measurements and records TRMS AC current up to 2500A in a generic three phase 3-wire system.

The XL422 is part of the HT Data Logger family which includes the following models: XL421, XL423 and XL424

These models can perform measurements and recordings of TRMS AC current up to 2500A from a generic single-phase system.

They can be very useful for various applications:

  • evaluation of load consumption
  • verification of nominal power of the incoming supply

The instrument is enclosed in a safe and practical case with a built-in flexible clamp enabling you to clamp-on to a cable or bar with wide dimensions.

Thanks to a sophisticated memory algorithm the instrument is able to record for a considerable time, up to about 1 year! (With a 60 sec integration period for single phase loggers and 5 min integration for 3 phase loggers dependant on battery life). It is also simple and straight forward to use.

With TOPVIEW2004 Windows software, supplied with the model, it’s possible to download and analyse all recorded data directly on your PC.

The high-protection (IP65) casing makes the instrument reliable to use in extreme environmental conditions.

HT Italia XL422 Function:

  • TRMS AC current measure up to 2500A
  • Recording with sampling programmable period
  • Manual activation of recording
  • Low battery indication
  • LED indication of any operation
  • RS-232 interface
  • Data maintaining without batteries
  • Programming with software
Specifications (accuracy stated at 23°C ±5°C ±(% of rdg + number of digits), < 60% R.H.)
Measurement Range 2 amps to 2500 amps
Resolution 1 amp
Accuracy ±(2.0% of reading + 2 digits)
Accuracy Error additional error due to not centering cable: 2% of reading
Working Frequency 50/60Hz ±6%
Type of Measurement True Rms
Bandwidth 3200Hz
Maximum Crest Factor 3
General Specifications
Sampling Rate 64 point, 20ms for each sampling period
Sampling Period 1 sec, 6 sec, 30 sec, 1 min, 5 min
Memory Capacity 1 Mbyte
Life in days (depending on batteries life):
5 days/1 sec; 34 days/6 sec; 170 days/30 sec; 364 days/1 min;
1820 days/ 5 min
Computer Interface RS-232
Operating Temperature/Humidity -20°C to 60°C; 0 to 100% R.H. (RS-232 connector closed)
Storage Temperature -20°C to 60°C; 0 to 100% R.H. (RS-232 connector closed)
Insulation class 2 (double insulation)
Protection Degree IP65 (RS-232 connector closed)
Maximum Altitude 2000 meters
Reference Standards LVD: IEC/EN 61010-1 CAT III 1000V (to ground), CAT IV 600V (to ground)
EMC: IEC/EN 61326 (1997) +A1 (1998) +A2 (2001)
Power Supply 2 x 1.5 volt type ‘AA’ alkaline batteries type LR6, AM3, MN1500
Battery Life 6 months
Dimensions 129mm (L) x 80mm (W) x 43mm (D)
Maximum Conductor Diameter 174mm
Weight 500g (with internal batteries)


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