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A2 Wireless Data Logger (Discontinued)

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Product Description

The SMT-A2 Wireless Data Acquisition unit is a high precision measurement device designed for distributed remote sensor data acquisition. The built-in 24-bit A/D converter and low noise high precision measurement circuitry facilitates data acquisition from a wide variety of sensors. Integrated Moisture Content, RH and temperature sensors make the SMT-A2 suitable for building monitoring applications.External sensor inputs, LCD display, large memory capacity and extended wireless range gives the SMT-A2 flexibility in a wide range of applications.The SMT-A2 unit communicates wireless sensor readings to the SMT Building Intelligence gateway. 

 

Optional powered repeaters can be used to extend the wireless range.

 

Click to view product datasheet

Applications

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  • Remote sensor analysis and data collection

  • High precision data acquisition

  • Building science research

  • Targeted repair monitoring

  • Restoration monitoring

     

Features

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  • Integrated moisture content sensing elements.
  • Integrated relative humidity and temperature sensors.
  • Two external resistance channels capable of reading wide moisture content ranges and precision thermistors.
  • Sensor inputs use compact audio jacks for quick and simple connectivity.
  • Internal memory capable of logging 340,000 data points.
  • Auxiliary input for voltage measurement capable of reading 0-5V sensors.
  • Wireless transceiver with 1000m line of sight communication.
  • Communicates to SMT Building Intelligence Gateway (BiG) via USB to Wireless device; SMT-I2.
  • Extreme low power device suitable for long term battery operation.
  • USB connectivity supports data downloads and firmware upgrades.
  • Backlit LCD user interface for easy network and sensor verification
  • Rechargeable batteries via USB port.

Functional Specifications

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Electrical Performance

Wireless

Specification: IEEE 802.15.4

Working Frequency: 2.4 GHz – 2.4835 GHz

Power: 20dBm (100mW)

Output Range (free air): 1000m. Powered repeaters can be added to extend range.

Max Nodes per coordinator: 32 (dependent on application density and acquisition speed)

 

Battery

Life: 1 year (hourly sampling)External battery packs available for 3 year sampling.

Type: 2 AAA Ni-MH Rechargeable Eneloop HR-4UTGA

Max Voltage: 3V

Capacity: Typical: 1600 mAh Minimum 1500 mAh

Self Discharge: 75% after 3 years

Charging Cycles Charger: Up to 1500


Memory and USB

Memory: 16 Mbit EEPROM for data storage Stores 340,000 data points.

USB: 1.0 Interface

 

Measurement Specifications

Internal Temperature

Sensor: Cantherm MF58104F3950 Beta 4390K

Range: -40°C to +70°C

Resolution: 0.1°C

Accuracy: ±1°C

 

Internal Relative Humidity

Sensor: Honeywell HIH-4000-001

Interchangeability: 0-59% RH ±5% 

                             60-100% RH ±8%

Resolution: 0.5% RH

Accuracy: ±5% RH

Hysteresis: 3% RH

Repeatability:  ±0.5% RH

 

Resistance

Range: 10Ω to 100Ω

Resolution: 1Ω

Accuracy: ±5%

 

Range: 100Ω to 100KΩ

Resolution: 10Ω

Accuracy: ±1%

 

Range: 100KΩ to 1GΩ

Resolution: 1KΩ

Accuracy: ±5%

 

Voltage

Range: 0Vto5V

Resolution: 100mV

Accuracy: ±5%

Gain Settings: 2x (0 to 2.5V) Resolution 50mV

                       4x (0 to 1.25V) Resolution 25mV

                       8x (0 to 625mV) Resolution 12mV

                       16x (0 to 312mV) Resolution 6mV

                       32x (0 to 156mV) Resolution 3mV 

A2 Wireless Data Logger (Discontinued)
The SMT-A2 Wireless Data Acquisition unit is a high precision measurement device designed for distributed remote sensor data acquisition. The built-in 24-bit A/D converter and low noise high precision measurement circuitry facilitates data acquisition from a wide variety of sensors. Integrated Moisture Content, RH and temperature sensors make the SMT-A2 suitable for building monitoring applications.External sensor inputs, LCD display, large memory capacity and extended wireless range gives the SMT-A2 flexibility in a wide range of applications.The SMT-A2 unit communicates wireless sensor readings to the SMT Building Intelligence gateway. 
 
Optional powered repeaters can be used to extend the wireless range.
 
Click to view product datasheet

A2 Wireless Data Logger (Discontinued)

    • Remote sensor analysis and data collection

    • High precision data acquisition

    • Building science research

    • Targeted repair monitoring

    • Restoration monitoring

       

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