ALTA Industrial Wireless Three Phase Current Meter - 500 AMP


The ALTA Industrial Wireless Three Phase Current Meter (500 Amp) measures the RMS current of an alternating current (AC) system using 3 current transformers (CTs) that wrap around the wires of a three phase power system. The sensor reports Minimum RMS current, maximum RMS current, average RMS current, and duty cycle for each phase and the combined amp hours of all three phases to the iMonnit system. The iMonnit system is capable of generating watt hour or kilowatt hour readings as well based on a user specified RMS voltage.

ALTA Industrial Wireless Three Phase Current Meter - 500 AMP - ALTA INDUSTRIAL WIRELESS THREE PHASE CURRENT METER - 500 AMP, 900 MHz
Part No. Description Price Stock
MNS2-4-IN-3P-500 ALTA INDUSTRIAL WIRELESS THREE PHASE CURRENT METER - 500 AMP, 433 MHz $748
MNS2-8-IN-3P-500 ALTA INDUSTRIAL WIRELESS THREE PHASE CURRENT METER - 500 AMP, 868 MHz $737
MNS2-9-IN-3P-500 ALTA INDUSTRIAL WIRELESS THREE PHASE CURRENT METER - 500 AMP, 900 MHz $737
∗ Standard lead time is 1 week

ALTA - Leading Enterprise Grade "Internet of Things" Solutions

ALTA sensors offer 3 to 4 times the range of standard sensor platforms, extending non-line-of-sight reach to an exceptional 1,200+ feet through walls (12-14 walls typical). Using Frequency-hopping Spread Spectrum (FHSS) also allows ALTA sensors to have better interference immunity from other wireless devices.

Superior power management provides ALTA sensors with almost twice the battery life of Monnit's standard wireless sensors.

  • Coin cell sensors typically last 3+ years.
  • AA and Industrial sensors typically last up to 12+ years.
ALTA products employ Monnit's new Encrypt-RF® Security (256-bit Diffie Hellman key exchange and AES-128 CBC encryption for all sensor data messages), so security is maintained at all communication points from sensor to gateway, gateway to software, then back again.

Integrated on-board data storage allows ALTA sensors to store data messages if communication to a wireless gateway is disrupted (power outage, Internet outage, or out of range). Messages that can't be delivered will be time-stamped and stored in memory (up to the last 512 messages) until communication with the gateway is restored, at which point the messages will all be transmitted.

Over-the-air updates allow ALTA products to be updated remotely if new fixes or features become available.

Monnit ALTA Industrial Sensors come in an IP65, NEMA 4X, CE rated, sealed, and weatherproof enclosure. They are powered by a single, replaceable, Industrial grade 3.6 V battery (included).

An optional solar powered version is also available. The solar powered version includes a Lithium Iron Phosphate rechargeable battery in conjunction with a solar power cell to keep the battery charged and at optimal capacity. If there is no light present at the solar cell, the battery alone could continue to power the sensor for up to 8-10 years.

Packing List


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

Features


  • 900/868/433 MHz Operating Frequency
  • Absolute Max CT Current: 600 Amps RMS (A rms)
  • Maximum Accurate CT Current: 500 Amps RMS (A rms)
  • Frequency Measurement Range: 50 - 100 Hz
  • Accuracy: +/- 2% @ 2 to 500, +/- 0.4 A rms @ < 15 A rms
  • Measurement Resolution: 0.01 A rms; Max - 1 A rms; Min - 1 A rms; Duty - 1%; Amp Hours - 0.1 Amp Hours
  • Dimension: 67 mm x 49 mm x 42 mm (24 mm inner diameter)
  • Weight: 28.7 oz.
  • Supply Voltage: 2.0 - 3.8 VDC
  • Battery Type: Replaceable 3.6V, 1800mAH (single AA sized)
  • Battery Life: Up to 10 Year Battery Life.**
  • 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)
  • Enclosure Material: IP65, NEMA 4X, CE rated, sealed, weatherproof enclosure
  • UL Rating: UL Listed to UL508-4x specifications (File E194432)

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