Remote Online Long Distance Temperature logger using 4-20 mA Current Loop

Ton-2

Ton-2 is a waterproof Current Loop 4-20mA online temperature datalogger. Features: Long distance temperature data logging,Small size, built in a PG9 nipple w/ PG9 thread, easy to install, Waterproof down to 10m (tested) High accuracy Real time monitoring Only 3 wires, comes with 1m cable. Temperature range -10 C to +100 C Accuracy 0 C - 70 C , +-1 C (+-2 C max) Accuracy -30 C - 85 C , +-1 C (-2 C/+4 C max) Temperature resolution: 0.2 C. Supply voltage 5 to 24V, polarity protected Current Size: L= 30mm, D= 19mm (pg9) + kabel Package include: 1x online datalogger TON-2

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Description

Ton-2  a designed for durability, accuracy, and ease of use, this compact datalogger is built to meet your most demanding monitoring needs.


Features:

  • Long-Distance Data Logging – Seamlessly monitor temperatures remotely using a reliable 4-20 mA current loop.
  • Compact & Easy to Install – Small size with a built-in PG9 nipple and PG9 thread for hassle-free setup.
  • Waterproof, tested to 100m – Perfect for harsh environments, ensuring reliable performance even underwater.
  • High Accuracy & Easy Recalibration – Trust precise readings and effortlessly recalibrate as needed.
  • Real-Time Monitoring – Stay informed with live temperature data, anytime, anywhere.
  • Simple 2-Wire Setup – Comes with a 1-meter cable (custom lengths available upon request). 
  • Wide Temperature Range – Measures from -10°C to +100°C, ideal for diverse applications.
  • Standard current loop 4-20mA output signal,

Whether you're monitoring industrial processes, environmental conditions, or underwater systems, our temperature logger delivers unmatched performance and reliability.

Application:

  • AUV where waterproof temperature logger is a must
  • BUOY for temperature monitoring
  • All application on land and underwater where remote temperature monitoring is needed

Specifications:

  • Temperature range:-10°C to +100°C
  • Accuracy 0°C - 70°C , +-1°C (+-2°C max)
  • Accuracy -100°C - 100°C , +-1°C (-2°C/+4°C max)
  • Temperature resolution: 0.2℃
  • Supply voltage 5 to 24 V, polarity protected
  • Current <25mA
  • Size: L= 30mm, D= 19mm (pg9) + kabel

Package include:

  • 1x online datalogger TON-2

Specification
Title Remote Online Long Distance Temperature logger using 4-20 mA Current Loop
Brand H-Instruments
Category Scientific Instruments,
SKU Ton-2
Condition new
Weight 80.0 g
Width 10.0 mm
Height 20.0 mm
Depth 10.0 mm
Country of Origin Iceland
Reviews 2
4.5 2 reviews

Remote temperature logging in land fishfarming

Sarah Vasey · April 2024

We use Ton2 to monitoring the temperature in a fishfarming dock on land. 50m from our office where we log the temperature on computer . It works well and I can recommend.

Easy to use, works as expected

Russel Kalev · September 2026

I have been using the temperature logger to log the temperature in a water well 50-60 m from the logging station. Easy to use, works as expected

Customer Reviews

4.5 / 5 · 2 reviews
Remote temperature logging in land fishfarming

We use Ton2 to monitoring the temperature in a fishfarming dock on land. 50m from our office where we log the temperature on computer . It works well and I can recommend.

Sarah Vasey · 2024-04-29
Easy to use, works as expected

I have been using the temperature logger to log the temperature in a water well 50-60 m from the logging station. Easy to use, works as expected

Russel Kalev · 2026-09-02

Underwater sound recording

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