LOGR | Met Data Logger - Wind

The LOGR | Met Data Logger is the next generation in wind and solar resource measurement, combining unparalleled security and ease of use to deliver the highest quality data for your pre- and post-construction campaigns.

  NO MODEM (#9458)
Description
Instrument type
NRG Data Logging Instrument
Applications
Wind Resource Assessment, Wind Resource Monitoring, Solar Resource Assessment, Solar Resource Monitoring, SCADA sensor interface
Data Collection
Sampling interval 1 Hz (IEC 61724-1 and IEC 61400-12-1:2022 compliant)
Averaging interval Selectable 1-minute (IEC 61724-1:2021 compliant), 5-minute, or 10-minute (IEC 61400-12-1:2022 compliant)
Real time clock
  • Internal with battery backup
  • Time synchronization via SNTP
Storage medium 8 GB microSD card
Maximum data storage >1 year (all data with maximum configuration)
Channel Capacity
  • Sixteen (16) analog channels (single-ended) or eight (8) differential             
  • Selectable Excitation on each Analog port, 5 V or 12 V, constant or pulsed              
  • Four Modbus ports; Up to Twenty-four (24) Modbus Sensors with up to 48 total Measurands             
  • Ten (10) counter channels, with independent 12 V excitation on each               
  • Twenty (20) calculated channels               
  • Three (3) outputs to power external equipment including heater / ventilators or external modems                 

Counter Channels Sensor Compatibility Built in support for a wide array of anemometers including:       
  • NRG S1 or other opto anemometers        
  • NRG 40C, Class 1, or compatible sine wave anemometers           
  • Reed switch anemometers           
  • Other frequency signals up to 2,500 Hz        
  • Includes totalizer mode for tipping-bucket rain gauge and other accumulator sensors           
Analog Channels Sensor Compatibility
Built in support for a wide array of analog sensors including:                
  • NRG meteorological sensor suite (200M Wind Direction, T60 Temperature, BP65 Barometric Pressure, RH5X Relative Humidity, etc.)                
  • Potentiometer wind vanes (NRG 200P, Thies, Wind Monitor)              
  • Industry-standard analog pyranometers (Hukseflux SRxx series, EKO MS-xx series, Kipp & Zonen CMP series, etc.)              
  • NRG PVT1 or other 10 kΩ NTC thermistors             
  • RTD (Pt100, Pt1000) type temperature sensors              
RS-485 Channels Sensor Compatibility
  • Built-in support for most Modbus RTU sensors (including Hukseflux SR series)
  • Contact NRG to discuss support for additional model types or protocols.
Parameters recorded for each channel
  • Average
  • Standard deviation
  • Minimum and maximum 1-s sample
  • Optionally records each 1-s sample
  • IEC 61400-12-1:2022 compliant; statistics reported depend on measurement type.
Data delivery
Supported Protocols: 

Security
  • Password-protected web server access
  • Web server uses secure HTTPS
  • E-mail via secure SMTP
  • All file transfers via secure SFTP
Counter Channel Measurement Accuracy
  • IEC 61400-12-1:2022 compliant
  • No missed pulses
  • Timebase accuracy 20 ppm
Analog Measurement Uncertainty (K=2)
  • All voltage signal 
    • +/- 10 V range, single-ended: 256.724 uV, differential: 579.338 uV
    • +/- 1.2 V range, single-ended: 67.0302 uV, differential: 37.027 uV
    • +/- 75 V range, single-ended: 60.647 uV, differential: 6.509 uV
  • Thermistor 10 kΩ NTC: 0.006 °C
  • Pt100 RTD: 0.054 °C
  • Pt1000 RTD: 0.053 °C
  • 1 kΩ potentiometer wind vane: 0.063°
  • 10 kΩ potentiometer wind vane: 0.032°

Resolution
Analog measurement resolution 24-bit signed A/D conversion
Software
Type
  • Onboard web server for logger configuration and administration
  • Modbus Demo Client for testing prior to connecting to SCADA
Configuration
User interface
  • Web browser on computer or smartphone connected on Ethernet or Wi-Fi
  • System configuration access and extensive diagnostics available via web interface
  • Wi-Fi wake / sleep button
  • 3 LED indicators and audible beeper for user feedback
  • Recessed reset button on front panel
Connections
Sensor wiring
  • 8 analog sensor wiring ports
  • Two single ended or one differential sensor per Analog port
  • Excitation configurable for 5 V or 12 V, up to 50 mA per Analog port to power sensors
  • Four (4) dedicated RS-485 sensor wiring ports
  • Excitation 12 V at up to 1 A per RS-485 port to power sensors
  • 10 Counter channel ports
  • Excitation 12 V, up to 50 mA per Counter port to power sensors
  • 2 outputs to control 12 V loads or relays
  • 1 output to control 5 V loads or relays
  • Enclosure ground lug connects to functional earth ground with included ground cable
Communication ports
  • Ethernet port serves web access, SNTP, SFTP, SMTP email, or Modbus TCP.
  • Ethernet port connects to external modem for remote access
  • Modbus RTU port for connection to SCADA
  • Creates a Wi-Fi hot spot for web access using any computer or smartphone with Wi-Fi
Power requirements
Built in Charge Controller
  • Combines DC power and PV power to charge battery and power the system
  • MPPT for PV input
  • Preconfigured for 12 V (6 cell) lead-acid batteries
  • Max 6 A charging
Batteries Coin cell battery for clock backup
External power input
  • DC (grid or other) 12 to 28 V DC, 15 A capacity
  • PV, 28 V max, 15 A capacity
  • Battery port for external 12 V lead-acid battery, 15 A capacity
Installation
Mounting 35 mm DIN rail, 247 mm (13 U) wide
Tools required
  • 2 mm flat blade screwdriver for wiring input terminals
  • 5/16" nut driver or wrench for ground terminal
Configuration and Diagnostics Access configuration and diagnostics via an Ethernet or Wi-Fi connected device with web browser
Environmental
Operating temperature range -40 °C to 65 °C (-40 °F to 149 °F)
Operating humidity range
  • 0 to 100% relative humidity non-condensing
  • IP65 ingress protection with proper installation in NRG shelter box enclosure
Physical
Dimensions 247 mm x 137 mm x 133 mm (9.72" x 5.39" x 5.24")
Materials
Enclosure Formed aluminum enclosure
Shipping
Shipping weight 1.8 kg (4 lbs.) (with included grounding wire and sensor plug set)

NRG Systems • 110 Riggs Road • Hinesburg, Vermont 05461 • +1 802-482-2255 • info@nrgsystems.com