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Four-Channel Data Logger, Model DL-1, by Tinker & Rasor

Logs interference, shorts, impressed current, structure-to-cell telluric events. Only 1-1/2" in diameter for installation in test station risers. Environmentally sealed for buried or wet applications.

Availability: In stock

Part Number: 04-19710




The DL-1 is a very sophisticated instrument designed to take CP voltage readings for pipe to soil measurements, depolarization, interference testing, current interruption monitoring, stray currents, tuelleric events, and more. 

The Latest in Data Logging for CP Applications
Tinker & Rasor re-introduces the Model DL-1 Data Logger. The all new DL-1 is still a four channel, leave behind data logger, but with many new features and improvements.
1 mV resolution, USB communication, new software.

The new DL-1 as double the memory, a major increase in processing power, better resolution and now has USB communication with the computer.
Other features include a rechargeable Li battery, new gasket and end caps for better resistance to water intrusion, Power button and more LEDs for more information.

The new TRAC4 software is easier to use and offers better tools for analyzing data than its predecessor. New features include the ability to graph only selected data from the Data View, graph only selected channels, and more.

The USB cable makes connecting a DL-1 unit to the computer much easier and the download speed of recorded data is lightning fast!



  • 4 Channels: (2) +/- 5v DC, (1) 150V AC, (1) Unfiltered +/- 100v

  • 1,000 Reads per second

  • 1,000,000 reads total memory

  • 1mV Resolution

  • 200+ MegOhm Impedance

  • Computer Configurable Trac 4 software at no charge

  • Allows user to share data in "Native Format"

  • Trac 4 software guarantees "Data Integrity"

  • Active AC and DC Filters

  • Water tight Case

  • Li Rechargeable Battery

  • Time/Date Stamps

  • Exportable Data

  • Complex One Click Graphing

  • USB high speed Interface

  • Conveniently fits inside 3" Test Station Riser Pipes (Riser Pipe hanger included)


  • Model DL-1 Data Logger
  • Instrument with rechargeable battery

  • Trac 4 Software CD and available.

  • Data Collection Cable

  • USB Computer Cable

  • Model 8-A Reference Electrode (Copper-Copper/Sulfate)

  • Test Station Riser Pipe Hanger

  • Screwdriver

  • Storage Case with Foam Insert


  • TRAC 4 software CD included at no charge

  • Full downloadable version available.

  • Values cannot be manipulated within Trac 4 software to guarantee integrity of the data recorded

  • Original Configuration and setup notes

  • Selective shunt values displays in data & graphics

  • Fast & Easy, single click graphing

  • Exportable Data


Electrical & Mechanical Specifications
Analog 4 Analog Channels
Input Voltage Range +/-5v ch 1 &2, 0.5 - 150 VRMS ch 3, +/- 100v TrueView
Resolution 1mV ch 1 &2, 500mV ch 3 & 4
Input Impedance 200+ Meg Ohms
Sampling Frequency Fast as 1 KHz, Slow as 1/99 min. (All channels)
DATA STORAGE 1,000,000 samples (with Time & Date stamp)
Recording Duration 0.001 seconds to years
Data Memory Battery Life (backup) 10 years
Power Supply  
Voltage 8.4v battery (Li-Ion -type)
Current 43mV
Standby 1.7mV
Battery Life up to one (1) Month
Operating Temperature -15 to 55 degrees Celsius
Storage Temperature -15 to 55 degrees Celsius
Communication USB Interface
Dimensions - Instrument 1.5" x 1.5" x 10.25" (38.1 mm x 38.1 mm x 260.35 mm)
Weight - Instrument 10 oz. (283g)

Channel Specifications:

  • Channel 1: -5.0 volts to 5.0 volts DC range, AC filtered out, 1 mV resolution
  • Channel 2: -5.0 volts to 5.0 volts DC range, AC filtered out, 1 mV resolution
  • Channel 3: 0.5 volts to 150 volts AC RMS range, DC filtered out,
  • Channel 4: -100.0 volts to 100.0 V AC and DC, no filtering (TrueView)

Other Technical Information:

  • Impedance: 200 Meg Ohm +, all channels
  • Input Power: 8.4 V DC, 2 - Li rechargeable battery
  • Communication: USB to host computer
  • Memory: up to 1,000,000 samples in non volatile memory (flash)
  • Sampling Rate: 1,000/second (1 kHz) to 1/99 minutes, user configurable

Power Source:

Internal rechargeable battery (sealed)


  • Recommended Annually


Operating Temp. Range -  -15ºC to 55ºC (5ºF to 131ºF)

Storage Temp. Range-  -15ºC to 55ºC (5ºF to 131ºF)


INSTRUMENT: 10.75" x 1.5" x 1.5", 0.5 LBS.

CARRYING CASE: 12" x 6.75" x 4.5" 2 lbs.

SHIPPING: 13" x 7.5" X 5" 4 lbs.

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