testo 176 T4 Four Thermocouple Temperature Logger

The Testo 176 T4 data logger can measure the temperature of four different measurement points simultaneously. It also has a super size memory for up to 2 Million readings, This gives you the freedom to read out the logger data at longer intervals, even when measuring cycles are shorter. an exceptionally wide measurement range and is compatible with a number of different thermocouple elements making it ideal for professional use in a variety of different fields.

You will need at least one temperature probe to use your logger. There is a wide selection of thermocouple sensors ranging from type K, T or J probes as well as air and surface probs are available.

Technical features and benefits in the field

The logger’s display provides you with a wide range of valuable information including current measurement values, threshold values, points where these thresholds have been exceeded, min/max values as well as the remaining battery power. And because all these values can be read off directly from the display, there is no need for you to boot up your PC.

In addition to this the logger also has a large memory and an exceptionally long battery life of up to 8 years. This gives you the freedom to read/ analyse data from the data logger. 

The  Testo 176 T4 data logger is IP 65 protected and can therefore also be used in dusty and dirty work environments. The standard AA batteries can be replaced by the user.


Possible areas of application

 Checking the temperature in ultra-low temperature freezers or under cryo conditions

 Measuring and logging flow and return temperatures at underfloor heating distributors in order to check that they are working properly

 Checking process temperatures

 Checking flow and return temperatures of heating systems

Programming and analyzing your data logger


Choose one of three software versions to program or read out your logger or to analyze the measuring data you have obtained on your PC:

Software ComSoft Basic– available for free downloading – allows you to program your logger and analyze the data quickly and easily

Software ComSoft Professional– optional – provides you with additional possibilities and a more detailed analysis of the temperature values

Software ComSoft CFR 21 Part11– optional – ideal for the special demands of the pharmaceutical sector in compliance with 21 CFR Part 11



More Information
Warranty2 Years
Technical Data
Measuring range  -200 to +400 °C ( Type T | External Probe )
-50 to +1000 °C ( Type K | External Probe)
-50 to +750 °C ( Type J | External Probe)
Operating Temperature -20 to +70 °C 
Memory 2 Million Readings 
Accuracy  ±(-200 to +100 °C) ±1 % of mv | (-100 to + 70 °C) ±0.3 % of mv |
 (+70 to 400 °C) ±0.5 % of mv  ( Type T)
±(-200 to +100 °C) ±1 % of mv | (-200 to -100,1 °C) ±0.3 % of mv |
 (+70,1 to +1000 °C) ±0.5 % of mv  ( Type K)
±(-200 to +100 °C) ±1 % of mv | (-100 to + 70 °C) ±0.3 % of mv |
 (+70 to 750 °C) ±0.5 % of mv  ( Type J)
Resolution0,1 °C
What's Included

One Logger, usb cable, wallholder, lock, batteries, calibration certificate and instruction manual.

4 Channel measurements (4 Thermocoule probes) 
for external temperature monitoring

Ability to measure Extreme High / Low

Large memory, 2 Million Readings

Data transfer possible using the USB port
or SD card (Optional)

Simple and large easy to read display

Free data logger software available for download

IP65 proection class