VersaLog VL-P

  • The 4-Mega-Byte Memory stores up to 2 million measurements.
  • Seven range programmable input channels for pulse count, on/off state or event timestamp measurements
  • Can be accessed via USB, MODEM, or Ethernet connections with auto baud rate of up to 115 kbps
  • 5-year battery life
  • Fast sampling mode
  • Alarm and excitation output
  • Siteview software required (1 license per site) and sold separately


Additional Equipment Required


The VL-P Pulse Data Logger is a 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. Data is stored in non-volatile flash memory for later retrieval. It works with gas/water/power meters, rain gauges, flow rate meters and any other digital signal/switch closure output devices.

Powered by configurable channel, internal pull up and triggering edge selections, the Versalog P combines the functionality of three types of loggers into one compact unit.

Featuring and aluminum enclosure the VersaLog logger has excellent performance in the harshest industrial environment.

Siteview software required and sold separately. One license per site, can be used on multiple loggers.


Connections Pluggable terminal block for seven external channels, excitation
controls & alarm outputs
Channels On-board thermistor temperature (-40°C ~ 70°C, -40°F ~ 158°F), Seven
external Current DC inputs: 0 ~ 20 mA
Types of Inputs Voltage, solid state switch, coil relay, dry contact,
digital TTL signal
Max Pulse Count per Sample Interval 65535 pulse counts
Pulse Accuracy ± 1 pulse
Max Pulse Rate Without external power supply: 10Hz (20Hz if only one channel enabled)
With external power supply: 2KHz (4KHz if only one channel enabled)
Internal Pull-Up 100 KOhms. Switchable on/off
Input Impedence >= 1MOhm
Trigger High Voltage >= 2.7 Volts
Trigger Low Voltage <= 0.5 Volt
Max Input Voltage 40 Volts
Channel Alarms Two editable alarm thresholds per channel
Alarm Outputs ALARM1 & A2/EXT terminal strips can be configured
as alarm outputsAlarm-On: MOSFET (N-Channel) switch on
Alarm-Off: MOSFET (N-Channel) switch offMax Power: 200mA @ 24VDC
Alarm-On Delay Programmable 0 – 10 minutes delay with 1-minute increments
Alarm Indicator On-board LED lights in red when in alarm condition
On-Board Memory
Capacity 4MB ~ 2 million measurements
Data Retention Over 20 years
Sampling & Logging
Sampling interval 20 milliseconds[1] 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 (USB cable included), AUX (RJ11) for direct TTL level
Baud Rate Auto-detect baud rate from 2400 to 115200 bps on both USB and AUX
Power Built-in 3.6V Lithium Battery
Life Cycle 10 years based on 1 minute sampling interval
SiteView Configuration, downloading, plotting, real-time view, custom calibration
and custom equation
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, Windows 7, 8
At least one USB port or one COM port
Material Aluminum enclosure
Dimensions 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 Normal Sampling: green when sampling
Alarm: red when sampling
Low Battery: amber when sampling
Exitation Control A2/EXT terminal strip can be configured as excitation control output for
powering connected devices
Warm-up delay Interval settings: 10 to 240 seconds with 10-second
Operating Environment -40 ~ +70°C (-40°F ~ 158°F), 0~95%RH non-condensing
Clock Accuracy +/- 1 minute per month
Approvals CE, FCC


Siteview Software

VersaLog SiteView Software

SiteView is a Windows-based application which works with the VersaLog Series data loggers for downloading, configuration, data analyzing and plotting. Its user-friendly graphic interface plus powerful functionality fit both novice and advanced users.

The versatility of custom equation and custom-line equation handle complicated measurement requirements.

  • Supports USB, Serial port and Ethernet connections for easy local and remote access
  • Fast communication speed up to 115200 bps makes downloading fast
  • Real-time view and chart recording replaces chart recording device
  • Custom equation and custom-line equation solves scientific and laboratory algorithm difficulties
  • Zoom in/zoom out, annotation/label of graph functions provide detailed view of data
  • Multiple file loading allows easy data comparison.
  • Dynamic statistics provides detailed information of current zoomed view
  • Siteview software required (1 license per site) and sold separately

Software Requirements:

  • Computer with 1.0 GHz or faster processor
  • 256K Memory or higher
  • 1.0 GB of available hard-drive space or higher
  • Windows XP with SP2 or later, Vista, Windows 7 and 8
  • At least one USB port or one COM port