Product:      Pulse/State/Event Data Logger
Series:       SITE-LOG
Model:          LPSE-1

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Product:        Pulse/State/Event Data Logger
Series:        SITE-LOG
Model:           LPSE-1

SITE-LOG LPSE-1 is 7-channel, battery powered, stand-alone, pulse/state/event data logger. The logger detects electronic or mechanical pulse counts, state changes or events in any of the seven channels and the data are saved in 4MB non-volatile flash memory for later retrieval. It works with gas/water/power meter, rain gauge, flow rate meter and any other digital signal/switch closure output devices.
Powered by configurable channel, internal pull-up and triggering edge selections, the LPSE-1 combines the functionalities of three types of loggers into one compact unit and is suitable for wide industrial applications.
Featuring an aluminum enclosure and conformal coating PCB, the SITE-LOG data logger has excellent performance in the harshest industrial environment. plug & Play USB port and versatile custom equation simplify communications and engineering unit conversion.
Simply plug the logger to computer's USB port, and the software automatically recognizes it and handles the configuration, downloading, graph viewing and more...


  • 4 megabyte memory size
  • Both USB and serial interfaces with auto baud rate of up to 115200 bps
  • Programmable input channels for pulse, state or event inputs
  • Over 5 years of battery Life
  • Powerful software for configuration, downloading, plotting, analysis and alarm reporting
  • Configurable alarm control/excitation controls
  • Wide sampling interval selections (1 second to 12 hours)
  • Rugged aluminum enclosure
  • Coated PCB to protect against moisture, corrosion and mildew.

Additional information

Weight 0.6 kg
Dimensions 22.8 × 15.2 × 10.1 cm


Product Name SITE-LOG 7-CH Pulse/State/Event Data Logger
Model LPSE-1
Connection Plugable terminal block for seven external channels,excitation controls and alarm outputs
Channels Seven external channels record state changes, event or pulse count. Each channel can be configured as either stage, event or pulse channel based on applications. For Event and Pulse configuration each channel's trigger detection can be configured between Normal Open (High to Low) (suggested) Normal Close (Low to High) (not suggested)
Type of Inputs Voltage, solid state switch, coil relay, dry contact, digital TTL signal.
Max. Pulse Cunt/Interval 65535 count
Pulse Accuracy ± 1 pulse
Max. Pulse Rate Without external power supply: 10 HZ (20 HZ if only one channel enabled) With external power supply : 2 KHZ (4 KHZ if only one channel enabled)
Min. Pulse Width Without external power supply: 35 milliseconds With external power supply: 0.5 milliseconds
Internal Weak Pull-UP 100 KOhms. Switch on/off by software
Input Impedance >= 1MOhm
Max. Input Voltage 40 Volts
Trigger High Voltage >= 2.7 Volts
Trigger Low Voltage <= 0.5 Volts
Channel Alarms Two editable alarm thresholds per channel.
Alarm Indicator On-board LED becomes red when in alarm condition.
On-board Memory
Size 4 Mega bytes (2MB readings).
Data Retention Over 20 years.
Sampling Interval 1 second to 12 hours user selectable
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 direct TTL level 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 5 years based on 1 minute sampling interval in stand-alone mode.
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.
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 1 484 days
1 minute 7 69 days
10 seconds 1 80 days
10 seconds 7 11 days
1 second 1 8 days
1 second 7 27 hours

Note: For State and Event channel, the above capacity is calculated based on a state or event occurs in every sampling period.