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10-year battery life
USB, serial ports
20 milliseconds - 12 hours intervals
Rugged aluminum enclosure
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SITE-LOG LFVB (high accuracy)

7-channel high accurate voltage DC data loggers

SITE-LOG Logger SITE-LOG LFVB data loggers are 7-channel, battery powered, stand-alone, high accurate voltage data loggers, with storage up to 4 MB of data in non-volatile flash memory. Input voltage signals can be from sensors, transducers, transmitters or any other common voltage sources.

Its on-board temperature channel provides environment monitoring and temperature compensation.

Its aluminum enclosure makes it excellent in the harshest industrial environment.

Plug & Play USB port and versatile custom equation simplify communications and engineering unit conversion. 16-bit ADC makes it well suited for science and laboratory applications where precise and accurate measurements are critical.

Simply plug the logger to computer's USB port, and the software automatically recognizes it and handles the configuration, downloading, graph viewing and more...

  • 16-bit analog-to-digital converter
  • Temperature Compensation
  • 4 megabyte memory size
  • Both USB and serial interfaces with auto baud rate of up to 115 kbps
  • Over 10 years of battery life
  • Powerful software for configuration, downloading, plotting, analysis and alarm reporting
  • Configurable alarm Controls/excitation controls
  • Wide sampling interval selections (20 milliseconds to 12 hours)
  • Rugged aluminum enclosure
  • Coated PCB to protect against moisture, corrosion and mildew.
Logger Memory Capacity
Sampling Interval Enabled Channel Logging Capacity
1 minute 1 3.98 years
1 minute 2 727 days
1 minute 8 181 days
10 seconds 1 242 days
10 seconds 2 121 days
10 seconds 8 30 days
1 second 1 24 days
1 second 2 12 days
1 second 8 3 days
100 milliseconds 1 58 hours
100 milliseconds 2 29 hours
100 milliseconds 8 7.2 hours
7-channel high accurate voltage DC data loggers
Product Name:
LFVB-1,2, 3, 4, 5
Input Connection:
Pluggable terminal block for seven external channels, excitation controls and alarm outputs
Internal Channel:
On-board thermistor temperature (-40°C ~ 70°C, -40°F ~ 158°F)
External Chanenls for LFVB-1:
Seven external 20 VDC channels.
External Chanenls for LFVB-2:
Seven external 10 VDC channels.
External Chanenls for LFVB-3:
Seven external 5 VDC channels.
External Chanenls for LFVB-4:
Seven external 2 VDC channels.
External Chanenls for LFVB-5:
CH1: 20 VDC, CH2: 10 VDC, CH3: 10 VDC, CH4: 5 VDC, CH5: 5 VDC, CH6: 2 VDC, CH7: 2 VDC.
Thermistor: ±0.2°C(0°C ~ 70°C, 32°F ~ 158°F)
Voltage channels:
±0.05% FSR @ 25°C for 20V, 10V, 5V channels
±0.1% FSR @ 25°C for 2V channels
Input Impedance:
Over 1 MOhms
Overvoltage Protection:
Channel Alarms:
Two editable alarm thresholds per channel
Alarm Output:
ALARM1 & A2/E terminal strips can be configured as alarm outputs
Alarm-On: MOSFET(N-Channel) switch on
Alarm-Off: MOSFET(N-Channel) switch off
Max Power: 200mA @ 24VDC
With purchase of SiteView software, SITE-LOG can report alarm status to host PC via USB, Modem or Ethernet Device Server.
Alarm-On Delay:
programmable 0 - 10 minutes delay with 1-minute increment.
Alarm Indicator:
On-board LED lights in red when in alarm condition.
On-board Memory:
4 Mega bytes (2MB readings)
Data Retention:
Over 20 years
Sampling Interval:
20 milliseconds to 12 hours user selectable. (external power supply required if interval less than five seconds)
Logging Mode:
Stop recording or FIFO when memory is full
Logging Activation:
Programmable instant, start delay or field push button activation.
USB (Mini-USB-B) (USB-A-mini USB-B Cable included)
AUX(RJ11) for direct TTL level communications
With purchase of DeviceServer or MODEM Kit SITE-LOG can be connected to Ethernet or MODEM for remote access.
Baud Rate:
Auto-detect baud rate from 2400 to 115200 bps on both USB and AUX.
Built-in 3.6V Lithium Battery.
Battery Life:
10 years based on 1 minute sampling interval.
SiteView: (Sold separately)
Configuration, downloading, plotting, real-time view, custom calibration and custom equation.
Software Requirements:
Computer with 1.0 GHz or faster processor
256 MB Memory or higher
1.0 GB of available hard-drive space or higher
Windows XP with SP2 or later, Vista, Window 7
At least one USB port or one COM port.
Aluminum enclosure.
PCB Treatment:
Conformal coating.
88 X 64.2 X 24 mm (3.46 X 2.53 X 0.95 inches).
Probe/wall-mount holes for hanging/mounting.
LED Indicator
Tri-Color LED: (can be disabled for power saving)
Normal Sampling: green when sampling.
Alarm: red when sampling.
Low Battery: amber when sampling.
Excitation Control:
A2/E terminal strip can be configured as excitation control output for driving the power of connected devices.
Warm-up delay interval settings: 10 to 240 seconds with 10-second increment.
Operating Environment:
-40 ~ +70 °C (-40 °F ~ 158 °F), 0 ~ 95% RH non-condensing.
Clock Accuracy:
±1 mintue per month.
SiteView Software Overview Real-Time Strip Chart Graph & Tabular Views Logger Status Window

Model Description Buy
LFVB-1 SITE-LOG 7-Channel Voltage Data Logger (High Accuracy 20VDC)
LFVB-2 SITE-LOG 7-Channel Voltage Data Logger (High Accuracy 10VDC)
LFVB-3 SITE-LOG 7-Channel Voltage Data Logger (High Accuracy 5VDC)
LFVB-4 SITE-LOG 7-Channel Voltage Data Logger (High Accuracy 2VDC)
LFVB-5 SITE-LOG 7-Channel Voltage Data Logger (High Accuracy 20, 10, 5, 5, 5, 2, 2 VDC)