Monnit MNS2-9-W2-RS-BR-L03 Wireless Resistive Bridge Meter

MNS2-9-W2-RS-BR-L03 Includes Only:

• Wireless Sensor Mounting Hardware
• 2 x AA Batteries

Features:

• Supplies up to 2.0V excitation
• Resolution: 24-bit or down to 0.00001 mV/V
• Accuracy: down to 0.0002 mV/V
• Measures both positive and negative percentages
• Programmable gain: 1X to 128X
• Optional 50 Hz and 60 Hz filters
• Cable length: 0.9 m (3')
• Cable terminations: bare-wire
• Reports additional temperature measurement
• Wireless range of 2,000+ feet through 18+ walls
• Frequency-Hopping Spread Spectrum (FHSS)
• Best-in-class interference immunity
• Best-in-class power management for longer battery life
• Encrypt-RF Security (Diffie-Hellman Key Exchange + Advanced Encryption Standard (AES)-128 Cipher Block Chaining (CBC) for sensor data messages)
• Sensor logs 2000 to 4000 readings if the gateway connection is lost (non-volatile flash, persists through power cycling):
  • 10-minute Heartbeats = ~ 22 days
  • 2-hour Heartbeats = ~ 266 days
• Automatic over-the-air updates to sensor firmware (future-proof)

Applications:

• Quarter/Diagonal/Half/Full Bridge configurations
• Strain Gauge
• Force (Load cell)
• Pressure
• Displacement
• Inclinometer
• Torque

The ALTA Wireless Resistive Bridge Meter uses two wires, red(1) and black(4), to excite a resistor bridge, thus providing a reference voltage for the measurement. Two additional wires, white(2) and yellow(3), measure the differential voltage across this bridge in mV/V. This meter contains a Programmable Gain Amplifier (PGA) and can be set to values between 1X and 128X, essentially increasing the measurement's resolution and reducing measurement error. The 50 and 60 Hz filters are also programmable.

Thresholds can be set so that when the output gets above or below a user-defined threshold, a wireless communication is immediately sent to the gateway. The gateway will immediately attempt to securely send the message to iMonnit or other approved data services.