Model 831-INT - Docking Station

FromLarson Davis, a division of PCB Piezotronics

The Model 831-INT provides the 426A12 outdoor microphone with both electrical power and control commands for its electrostatic actuator, temperature and humidity readout. The Vaisala WXT520 (SEN031) weather sensor is connected to the Model 831-INT for wind speed and direction, temperature and humidity, barometic pressure, rain and hail.

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sealed lead acid battery

TheModel 831-INT further simplifies cabling by providing a USB hub where the GPS, analog modem or wireless gateway connect.

The AC power unit also controls the intelligent charging of the Sealed Lead Acid (SLA) backup batteries. The DC power input is available for solar powered installation.

The enhanced 831-INT-ET version extends the reach of the Noise Monitoring Station (NMS) with TCP/IP based broadband connection, even allowing live audio streaming. It is fully supported by the 831 SDK making it an ideal solution for system integrators.

Finally, the Model 831-INT hosts the Model 831 sound level meter as the heart of a permanent NMS.

831-INT-ET adds Ethernet network connection for broadband communication
Weather sensor interface
Powered USB hub for communication, weather and GPS
AC, battery or solar powered
Battery charge management including solar power
Power forModel 831, outdoor microphone weather sensor, and communication
Fully supported by 831 SDK for system integrators
Cabling made easy
Rugged and reliable
Live audio streaming
-40 to 70 °C (-40 to 158 °F) Temperature range

831-INT-ET adds Ethernet network connection for broadband communication
Weather sensor interface
Powered USB hub for communication, weather and GPS
AC, battery or solar powered
Battery charge management including solar power
Power forModel 831, outdoor microphone weather sensor, and communication
Fully supported by 831 SDK for system integrators
Cabling made easy
Rugged and reliable
Live audio streaming
-40 to 70 °C (-40 to 158 °F) Temperature range

Permanent NoiseMonitoring
Temporary NoiseMonitoring

Permanent NoiseMonitoring
Temporary NoiseMonitoring

Model 831 Interface

Conditioning of signals from all sensors
Power for Model 831
Power and control signals for Models 426A12 outdoor microphone
Power for 4 USB ports and logic I/O lines

4-Port USB Powered Hub

Cellular Modem: MDMUSB-E
Analog Modem: MDMUSB-A
GPS unit: GPS001
Combined weather sensor: SEN031
Up to 500 mA per port

2 Digital I/O Lines

1 Logic Input, 0 - 5 V (Typical use: open door detection)
1 Logic Output, open drain. 0 - 16 V (Typical use: exceedance warning)
Provides 10 to 15 V power port for external peripherals, up to 200 mA

Network (831-INT-ET)

CAT5 Ethernet for broadband communication
Wireless 3G/GSM-Raven XE Gateway

Miscellaneous

Watchdog system will restart the system in the event of system faults
Compact design cradles theModel 831 & provides for mounting in permanent enclosures
LED Indicators show
1. Mains Power
2. Charger Status:
On = Full Charge Mode
Blink = Trickle/Recovery Mode
Off = Fully Charged
3. System Power
4. USB Hub Power

Battery Management and Charge Control

One or two 12 V sealed lead-acid (SLA) batteries
Connector: removable screw terminal
Automatic systemshutdown on lowbatteries
Automatic intelligent charger for SLA batteries: trickle and full charge modes
Temperature sensor for charger compensation

AC powered

AC Power provided by 15 V 3.5 A: PSA030
Seamless, automatic power switching from mains power to battery backup when mains power fails
Automatic charge of backup batteries
Automatic power up with mains power restoration, if battery was discharged

DC powered

Powered from a battery and solar panel with matched charger
Automatic power up after automatic shutdown