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  • ALTA Industrial Wireless Three Phase Current Meter - 20 Amp
ALTA Industrial Wireless Three Phase Current Meter - 20 Amp

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The ALTA Industrial Wireless Three Phase Current Meter measures the RMS current of an alternating current (AC) system using 3 current transducers (CTs) that wrap around the wires of a three-phase power system.
  • Measures amp hours, max RMS current, min RMS current, average RMS current, and duty cycle for each phase and combined amp hours from all three phases
  • 3x current transducers
  • Capable of generating watt hour or kilowatt-hour readings using iMonnit
  • Data logging for accumulated amp hour readings
  • Can notify based on amperage/power levels
  • Simple and safe installation of amperage/power measurement hardware, no rewiring required
To measure current, clip the CT around a single wire of a powered system (clipping around a hot and neutral wire at the same time will result in 0 amp current readings). After the sensor powers on and connects to the gateway, it will begin taking measurements based on the averaging interval (5 seconds default). It will report data to iMonnit every heartbeat or sooner if the sensors aware of state changes based on the current threshold setting in iMonnit. The sensor reports average current, max RMS current, min RMS current, and duty cycle for each phase and amp-hours for all three phases combined. These readings are based on all measurements taken between heartbeats. iMonnit can also generate watt-hour or kilowatt-hour readings if a default RMS voltage is set in iMonnit.

Explore ALTA Standout Features

  * Actual range may vary depending on environment.
** Battery life is determined by sensor reporting frequency and other variables.

Data Snapshot

Three Phase Current Meter - Data View in Software

In the Box

  • Wireless Sensor
  • Mounting Hardware
  • 3V Industrial Battery (Pre-Installed)
  • SMA Antenna

Absolute Max CT Current 50 Amps RMS (A rms)
Frequency Measurement Range 50–100 Hz
Accuracy +/- 2% @ 2 to 20 A rms, +/- .07 A rms @ < 2 A rms
Response Time ~3 Seconds
Weight 2.10 oz (60 g) (CT only) | 13.20 oz. (374 g)(Total Net Weight)
Lead Wire Length 3 feet (91.4 cm)
Dimension 3.7 in (93 mm) x 2.32 in (68 mm) x 1.38 in (52 mm)

ALTA Industrial Specifications

Supply Voltage 2.0 - 3.8 VDC
Battery Type Replaceable 3.6V, 1800mAH (single AA sized)
Battery Life At 1 hour heartbeat setting, battery will last up to 10 years.**
Max Operating Temperature -40° to 85°C (-40° to 185°F)
Optimal Battery Operating Temperature +10°C to +50°C (+50°F to +122°F)
Solar Power Option 3.0 VDC Solar Panel
600 mAH Rechargeable Battery (>2000 Charge Cycles - 80% of Initial Capacity)
Charging Temperature Range: 0° to 45°C (32° to 113°F)
Max Temperature Range: -20° to 60°C (-4° to 140°F)
Enclosure Material IP65, NEMA 4X, CE rated, sealed, weatherproof enclosure
UL Rating UL Listed to UL508-4x specifications (File E194432)
Dimension 3.7 in x 2.32 in x 1.38 in

ALTA 900 MHz Specifications

Operating Frequency 900 MHz Operating Frequency
Certifications Complies with Part 15 of the FCC Rules. (FCC ID: ZTL-G2SC1)
Complies with Industry Canada standards. (IC: 9794A-G2SC1)
Device Range Device Range Up to 1,200 ft. non-line-of-sight, wireless device range*
Security Encrypt-RF® (Diffie-Hellman Key Exchange + AES-128 CBC)
Specifications Image

Suggested Application Uses for This Sensor

  • Current Monitoring
  • Current Usage
  • Amperage Monitoring
  • Amp Hour Meter
  • And Many More...