DOT Logger

DOT Logger

Features	Applications
4 analog, 4 pulse, 10 SDI-12 inpts Simple configuration for telemetry applications: Satellite Radio Telephone Ethernet links Windows software for easy data interaction: Set up and configuration Date exchange to PC Graphical analysis Tabular analysis Data export to other software programs Internet accessible via Web browser (optional)	Water resources Water level/stage Water flow Water quality Groundwater Irrigation scheduling Meteorological & Agrimet Soil moisture, temperature and conductivity
Description
The Stevens Data Online Telemetry (DOT) Logger is a flexible, compact, and inexpensive data logger specifically designed for accurate measurements from a variety of sensors. The DOT Logger’s design includes four analog and four pulse count inputs, and can monitor up to ten SDI-12 sensor parameters in remote environmental applications. The DOT Logger telecommunicatiosn options include satellite transmitters (geostationary such as GOES or low earth orbiting such as ORBCOMM), cellualar or PTSN modem, or radio (UHF, VHF, spread specturm). Free software that is shipped with the DOT Logger includes DOT SET for easy set up and configuration of the DOT Logger and Stevens Logger Read for simple exchange of data between the DOT Logger and a computer. The data downloaded to the PC can easily be viewed in a comparable tabular or graphical format or exported to MS Excel or users program. This flexible data collection package with the telemetry options easily brings the remote site monitoring information to your computer and/or standard web browser software.

DATA MANAGEMENT SOFTWARE APPLICATIONS
Storage, management and basic analysis of data are accomplished using Windows based software (Stevens Logger Read for direct connection to a remote station, and DaqLab for base station communications with a network of remote stations). Stevens also provides a data managment service where the remote station data is transmitted to a data warehouse that the user can access, analyze and download through a secured Internet URL (for an example see owrd.e-monitoring.net without the "www")

Technical Specifications
Power Requirments	10 - 17 VDC, <0.5mA standby current (telemetry system may require additional power)
On-Board Data Storage	FLASH EPROM, 256k Bytes, capable of storing 60,000 readings
Recording Interval	1, 5, 6, 10, 15, 30 seconds 1, 5, 6, 10, 15, 30 minutes 1, 2, 4, 6, 8, 24 hours
Real-Time Clock	Accurace +/- 1 minute/month, leap year correction
Non-Volatile Memory	All setup parameters and clock, lithium battery
Message Size	6 - 250 bytes typically, no maximum
Serial Port	RS-232, minimun +/- 5 VDC levels, 300 to 9600 baud
Analog to Digital (A/D) Bits	12
Communications	RS-232 (MODBUS optional)
Temperature and Humidity	Operating: -40 F to 158 F (-40 C to 70 C) NEMA 4 enclosure: 100% condensing Aluminum enclosure: 95% non-condensing
Sensor Input Selections
Four (4) Analog - Signal Ended:	Input type: 2 wire, 4 - 20 mA current loop Sensor power: 24 VDC, under firmware control Accuracy & Resolution: 0.25% accuracy, 0.1% resolution
Four (4) Pulse Count:	Input type: pulse Sensor power: 5 or 12 VDC continuous Maximum rate: 30 pulses per minute
Ten (10) Serial:	Input type: SDI-12 Sensor power: 12 VDC continuous, 5 or 12 VDC under firmware control (switched)
One Switch Excitatio Voltage:	5 or 12 VDC
Physical Size (L x H x D)	NEMA 4 - 6.3 in x 3.2 in x 2.3 in (160.2 mm x 80.1 mm x 58.2 mm) Black housing - 6.3 in x 4.2 in x 1.3 in (159.0 mm x 105.2 mm x 33.7 mm)

ORDERING INFORMATION
Part number	Description
ST92961-00	DOT with NEMA 4 enclosure
ST3273-00	DOT with Black anodized aluminum enclosure