testo 176 P1 - data logger for absolute pressure, temperature and humidity

Order-Nr.  0572 1767

  • Continuous measurement and documentation of absolute pressure

  • Two optionally connectable probes for humidity and temperature values

  • Large measurement data memory for up to 2 million measurement values

  • Software for data evaluation on a PC

When ambient conditions, for example in a laboratory, need to be documented securely and highly accurately, the testo 176 P1 is the right data logger. It has an integrated absolute pressure sensor and connection possibilities for two external temperature/humidity probes (optional).

Product Description

Pressure data logger testo 176 P1 has an integrated sensor which measures absolute pressure precisely in the range from 600 mbar up to 1100 mbar.

Up to two temperature/humidity probes can be additionally connected to the 5-channel pressure data logger testo 176 P1. A wide selection of probes is available to you for this purpose.

The lock included in delivery protects your loggers from unauthorized access.

Security and convenience at all levels

The testo 176 P1 data logger for absolute pressure, temperature and humidity guarantees high data security and reliable measurement results on the basis of modern measurement technology.

When temperature/humidity probes are connected, the data logger also shows the dewpoint in the display, in addition to the current measurement values. You can read programmed limit values, min. and max. values, limit value violations as well as the remaining battery life easily from the large display. It is therefore not necessary to read out the data logger to a PC in order to gain a quick overview.

Thanks to the large memory for 2 million measurement values, and the battery lifetime of up to 8 years, you can read out the data much less often, even at a shorter measurement intervals. The standard battery (AA) can be easily exchanged at any time by the user.

Programming and evaluation of the data logger

For the purposes of programming and readout of your data logger, as well as the evaluation of the measurement data on a PC, you can choose between three software versions:

-  ComSoft Basic software – available for free download – for the fast programming of the data logger as well as easy data analysis.

-  ComSoft Professional software – optionally available – offers you different possibilities for the detailed analysis of absolute pressure, temperature and humidity values

-  ComSoft CFR 21 Part 11 software – optionally available – optimum for the special requirements of the pharmaceutical sector according to CFR 11 Part 11
To program this pressure data logger, you require a USB cable which is not included in delivery. Transfer of the saved measurement data from the data logger to a PC can also take place by USB cable or by an SD card. You can order both as optional accessories.


Delivery Scope

testo 176 P1, 5-channel pressure data logger with internal pressure sensor (absolute pressure) and external probe connections (NTC/ capacitive humidity sensor). Including wall bracket, battery and calibration protocol.
Temperature - NTC

Measuring range

-20 to +70 °C


±0.2 °C (-20 to +70 °C) ±1 Digit

±0.4 °C (Remaining Range) ±1 Digit


0.1 °C

Humidity - Capacitive

Measuring range

0 to 100 %RH*


dependent on probe selected


0.1 %RH

* Not for condensing atmospheres.

Absolute Pressure

Measuring range

600 to 1100 mbar


±3 mbar (0 to +50 °C) ±1 Digit


0.1 mbar

General technical data


230 g


103 x 63 x 33 mm

Operating temperature

-20 to +70 °C

Product-/housing material


Protection class



4 external; 1 internal

Connectable probes

2 x NTC temperature probe or 2 x humidity probe

Product colour



EU-guideline 2014/30/EU; 2011/65/EU

Measuring rate

1 s to 24 h; 2 s to 24 h (online measurement)

Battery type

1 x Lithium (TL-5903)

Battery life

8 years at 15 min. meas. rate, +25 °C


mini usb, SD card slot


2,000,000 measuring values

Storage temperature

-40 to +85 °C

Humidity probes

Plug-in humidity/temperature probe

Order Number: 0572 2151


Temperature probe 12mm

Order Number: 0572 6172

Rs  26,590.00
GST and accessories extra
Temperature probe 4 mm

Order Number: 0572 6174

Rs  31,090.00
GST and accessories extra

Surface probes

Rs  6,520.00
GST and accessories extra


USB connection cable, instrument-PC

Order Number: 0449 0047

Rs  2,500.00
GST and accessories extra
Lithium mignon battery (AA)

Order Number: 0515 1760

Price on Request
Wall bracket for data loggers with lock

Order Number: 0554 1703

Price on Request

Printer and accessories

Mobile printer for data loggers

Order Number: 0572 0576

Monitoring and documentation of laboratory conditions

The ambient conditions for research projects must frequently be documented in laboratories to check external influencing factors. In addition to recording temperature and humidity, this also includes checking the absolute pressure. There are major requirements in terms of reliability, along with tamper-proofing and data security of the recording instrument, as incorrect documentation could invalidate the whole research result. There are only a few instruments which can log all three measurement parameters at the same time and also offer the required amount of data security.