LPM-1 SITE-LOG Voltage, Current and Temperature Data Logger

LPM-1 SITE-LOG Voltage, Current and Temperature Data Logger

SITE-LOG LPM-1 is a 7-channel, battery powered, stand-alone voltage, current and temperature data logger, with storage up to 8 MB of data in non-volatile flash memory. Input voltage/current signals can be from sensors, transducers, transmitters or any other common voltage/current 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
  • 8 megabyte memory size
  • Both USB and serial interfaces with auto baud rate of up to 115200 bps
  • Programmable input ranges (0 to 20 VDC, 0 to 5 VDC for voltage channels, 4-20mA and 50mA for current channels)
  • 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.


SITE-LOG Voltage and Current Data Logger (LPM-1) Specifications

SiteView Specifications

Want to remotely access this data logger? Check out DSS-2 Site USB Device Server

Product Name SITE-LOG Voltage, Current and Temperature Data Logger
Model LPM-1
Connection Plugable 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)
CH1 ~ CH4 (Voltage) Programmable ranges for each channel:
0 ~ 20 VDC, 0 ~ 5 VDC
CH5 ~ CH7 (Current): Programmable ranges for each channel:
4 ~ 20 mA, 0 ~ 50 mA.
Resolution 0.0018%
Accuracy Thermistor: ±0.2°C(0°C ~ 70°C, 32°F ~ 158°F)
Voltage channel:
±0.15% @ 25°C from 0.1V and up
±0.5% @ 25°C from 0 to 0.1V
4 - 20 mA channel: ±0.15% FSR @ 25°C
50 mA channel:
±0.15% from 2.5mA to 50 mA @ 25°C
±0.5% from 0 - 2.5mA @ 25°C
Input Impedance (voltage ch) > 1 MOhms
Load Resistor (Current ch) 12 Ohms
Over voltage/current Protection -3 VDC ~ +40 VDC for voltage channels
Up to ±100mA for current channels
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
Alarm-On Delay Programmable 0 - 10 minutes delay with 1-minute increment.
Alarm Indicator On-board LED becomes red when in alarm condition.
On-board Memory
Size 8 Mega bytes (4MB readings).
Data Retention Over 20 years.
Sampling Interval 20 milliseconds to 12 hours programmable. (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.
Interface USB (Mini-USB-B) (USB-A-mini USB-B Cable included)
AUX(RJ11) for TTL level RS232 communications.
Baud Rate Auto-detect baud rate from 2400 to 115200 bps on both USB and AUX.
Power 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 Requirement Computer with 1.0 GHz or faster processor
1 GB Memory or higher
10 GB of available hard-drive space or higher
Windows XP with SP2 or later, Vista, Window 7,8,10
At least one USB port or one COM port.
Material Aluminum enclosure.
PCB Treatment Conformal coating.
Dimension 88 X 64.2 X 24 mm (3.46 X 2.53 X 0.95 inches).
Weight 200g
Mounting Probe/wall-mount holes for hanging/mounting.
LED Indicator Tri-Color LED: (can be disabled for power saving)
Normal Sampling: light 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.
Approval CE, FCC

Logger Memory Capacity

Sampling Interval Enabled Channel Logging Capacity
1 minute 1 8 years
1 minute 2 4 years
1 minute 8 1 year
10 seconds 1 485 days
10 seconds 2 242 days
10 seconds 8 60 days
1 second 1 48 days
1 second 2 24 days
1 second 8 6 days
100 milliseconds 1 4 days
100 milliseconds 2 2 days
100 milliseconds 8 14.4 hours
  • $588.00(USD)

Tags: LPM-1, voltage and current data logger