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The DL-1 has been discontinued.

Tech Data
Tech Data
DL-1 data logger with spreadsheets and graphs in background


  • Interference testing

  • Pipe to Soil measurements

  • Rectifier Trouble shooter

  • Anode output reads

  • CIS verification

  • Telluric events

  • Stray currents

Click To Download

TRAC 4 Software

TRAC 4 Software for MODEL DL-1 Data Logger

Electrical & Mechanical Specifications

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 Info:

  • 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.

TRAC 4 Software for MODEL DL-1 Data Logger

Accessories Available:

  • #085-145 DL-1 Data Logger

  • #026-065 Cable Data Input

  • #026-087 USB Cable, Computer Interface

  • #141-010 Strain Relief Bar

  • #073-069 T&R Logo Screwdriver

  • #031-023 Charger, DL-1 (Li), with usb adapter

  • #147-003 Trace 4 Software CD

  • #029-130 Carrying Case

TRAC 4 Software for MODEL DL-1 Data Logger


Use DL-1 as your “Leave Behind” CP tech, taking CP voltage reads over periods of time.

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!

TRAC4 Software Included!

Your new computer doesn't have a CD/DVD drive?

No worries as the TRAC-4 Software can be downloaded online!

TRAC 4 Software for MODEL DL-1 Data Logger


Model: DL-1

“Leave Behind” CP Data Logger 4 Channels


  • 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 (Click Here To See You Tube Video Demonstration)

  • 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)


  • 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

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