Datalogger Details
The HDL and FWS series of dataloggers are the result of extensive engineering experience in building, installing, and maintaining environmental monitoring stations in some of the world’s toughest environments. Designed for permanent installation in remote locations, the HDL dataloggers are optimized for hydrological monitoring applications and the FWS dataloggers are optimized for meteoroligical and fire weather spplications. Both series are equally at home in remote northern installations, coastal rain forests or southern deserts.

In combination with the back-up power supply, extensive datalogger memory capacity ensures that logged data is never lost. Downloading data does not erase information stored in memory so multiple users can access data as needed.

Features

  • Reliable and tough - three levels of internal lightning protection, a waterproof O-ring sealed cast aluminum case, and full battery back-up
  • Maximum field simplicity - military-style quick-connect cabling, easy mounting options, part of a fully modular system
  • Remote programming - the FWS-12S and the HDL-1 can be programmed via remote communication
  • High Data Rate GOES - supports HDR GOES, the future standard for GOES satellite communication. The HDL-1 also has an option for a built-in HDR GOES transmitter
  • Multiple Communication Options - also supports INMARSAT satellite, cellular, radio, voice radio and phone
  • The HDL series includes a built-in display

Data storage
Built-in memory is sufficient for approximately 70,000 to 200,000 readings depending on the exact nature of the parameters being stored.Data is stored in a circular buffer in EEprom memory - when the memory fills up, the newest data to be stored overwrites the oldest data.  Data extraction occurs upon a user request made with StreamTrac, Fire Weather Plus or TERRA Plus software. Data extraction does not change stored data.

Packaging
The datalogger electronics and the back-up battery unit are packaged in waterproof, cast aluminum enclosures that have been powder coated for maximum durability. All exposed materials are either aluminum or stainless steel. 

Connectors
All connectors are waterproof circular military-style bayonet connectors with positive locking to prevent accidental disconnects. 

Programmability
Numerous pre-defined data collection programs are available from FTS and can be factory supplied, eliminating any operator programming tasks.  In particular, fire weather stations in North America are delivered pre-programmed and ready to install. However, the datalogger can be programmed as required by the user.  All programs are preserved in EEprom memory so that even in the event of a power failure no programming information or sensor data is lost.  Programs can be downloaded and modified by remote communication.

Power Status
It is possible to monitor the two supply voltages and the SDI bus voltage, either as part of the logged data or as single readings requested through the communications port. The HDL series includes a high efficiency built-in voltage regulator for battery charging and saving costs and installation time for solar panel installations.

Password Protection
Several key operations (setting the time, loading a new program, etc.) can be password protected in the datalogger. This allows several people to access the datalogger for data with only one person being able to make changes to the datalogger. There are two passwords present in the datalogger: the user password and an FTS access password which is different for every datalogger. The customer can change the password at any time, and enable or disable password protection.

Audit Log
The datalogger has an internal status log or audit log that keeps track of power failures, time changes, new program loads, etc. This allows for easier diagnosis of site problems. This log is independent of the data storage and can also be interrogated remotely.

Data Quality Monitoring
The datalogger keeps track of data failures, such as a sensor not responding, or returning out of range values. This type of error is tracked in the data file, rather than the internal status log, and is returned with the data from the datalogger.

HDL-1 and HDL-1 G5 Specifications Sheet
fws12 specifications FWS-12S Specifications Sheet
datalogger overview Datalogger Overview

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