Control Interface for CTS Environmental Chambers¶

cts-chamber is a Python package to control the Clima Temperature Systeme (CTS) environmental chambers.

Image of the front of a CTS environmental chamber — (Source: user manual. Copyright © Clima Temperatur Systeme, 2025)¶

Contents of this Documentation¶

Overview

Module Reference

Contributions & Help

Installation¶

$ pip install cts-chamber

Supported Features¶

Temperature control
Humidity control
RS-232 communication

Usage¶

from cts_chamber import CTSChamber

chamber = CTSChamber(
        serial_device='/dev/ttyUSB0',
)

chamber.set_temperature(30.0)

current, set_point = chamber.get_temperature()
print(f"Current temperture is {current} °C")
print(f"Setpoint is {set_point} °C")

chamber.start()

Running tests on hardware¶

During normal development and for the CI the unit test suite is executed on a mock device using pyvisa-mock. It is also possible to run tests on real hardware connected to your system. Just set the hil flag when running poe

$ uv run poe test_hil

By default it will try to connect to /dev/ttyUSB0, but you can specify a different device using the --hil_serial_device option:

$ uv run poe test_hil --hil_serial_device /dev/ttyUSB1

Status¶

Currently, only the RS-232 communication has been tested on the device.

Documentation¶

Check out the API documentation of the module here.

Feeling like contributing?¶

Great! Check the Contributing Guide to get started.