Features

• For Temperature and Relative Humidity Measurements
• External Thermistor Probe with 2 m Cable
• Additional Temperature Probe Available for 2-Channel Temperature Recording
• USB 2.0 Interface
• Compact, USB Stick-Like Housing
• Software GUI and Drivers Included

Measuring just 69.5 mm x 12 mm x 20 mm (2.74" x 0.79" x 0.47"), which is approximately the size of a USB thumb drive, the TSP01 provides a very compact solution for measuring temperature and humidity as a function of time. It can be plugged into any free USB port on a computer and is capable of measuring and logging up to three different temperature signals (1 internal and 2 external sensors) and one humidity signal (internal sensor) simultaneously. Sensors can be enabled/disabled using the "Settings Panel" within the GUI.

One external TSP-TH NTC thermistor sensors is included with the purchase of the TSP01 temperature and humidy logger, and a second one can be ordered separately. Both probes are directly connected to the USB housing via a 2 m long, shielded cable terminated with an headphone connector. The data can be displayed by the included standalone GUI (see the Functionality tab for details). If desired, a user-supplied external NTC thermistor, providing a measurement range of 80 - 200 Ω, can be wired and used with this temperature and humidity logger. See the the image of the 2.5 mm standard stereo headphone connector to the right for the pin connectorization.

Thorlabs' Beam Profiler software packages are capable of displaying simultaneously the temperature and humidity data as measured by the TSP01 as well as the beam profile data. When used together, beam profile, temperature, and humidity data is all stored together, thereby providing a complete log of environmental conditions as a function of time during an experiement. The included driver set also allows for integration into third-party software.

Functionality Overview of the Software Package:

Logging:

The GUI software has multiple logging options, allowing the user to tailor the software to his or her preferences. The left-hand box in the screen shot to the right shows the various options, which will be discussed below.

Measurement Interval: The logging interval, which is the time between two measurements, can be set from 1 to 10,000 seconds in full second increments.

Averaging: When averaging is unchecked, a single measured value per selected measurement interval will be logged. By checking this box, all measured values, which are taken every second regardless of the measurement interval chosen, will be averaged over the user-selected measurement interval and a single averaged value will be logged.

Logging Control Modes:

• Manual Start / Stop of Logging
• Start / Stop of Logging by Time Values
• Stop of Logging after a User-Specified Number of Samples

3 Scale Options for the Time Axis:

• Time in seconds
• Time in hours:minutes:seconds
• Time Stamp (date and time)

The time displayed on the "Graph" and "Table" tabs can be shown in any of the three options mentioned above. As shown in the screenshot above, the "Measurement" tab just shows the value of each active sensor (i.e., no explicit time) and is updated at the user-specified measurement interval that was entered in the logging box.

Start / Stop Logging:
This is a toggle button to start / stop logging data.

Results:

The logging statistics are summarized in the bottom left box of the GUI screenshot shown above.

Display Modes

Three different display modes, two of which are shown in the GUI screenshots displayed here, are accessible via tabs.

• Measurement: (see screenshot above) The values of all enabled sensors are displayed numerically as well as on a bar graph with adjustable range and limit settings
  
• Table: (not shown here) A list of Temperature/Humidity values as a function of time is given as well as the full date/time time stamp
  
• Graph: (see screenshot to the right) Data for up to three activated temperature sensors [one internal temperature sensor (blue) and two external temperature sensors (green and red)] and one humidity sensor (black) can be displayed. All temperature curves are shown within a single line chart. A zooming feature for specific time and data areas is available. The activation of the sensors is done in the settings window of the GUI (not shown here).

Data and Configuration Import/Export:
The device configuration as well as the measured data can be stored on the connected computer as text files.

Software for USB Temperature and Humidity Logger

This software package also includes the instrument drivers for the National Instruments™, LabWindows™/CVI, and LabVIEW™* development environments. The drivers are intended for developers who want to extend or adapt the functionality of the device to their special requirements.

Software

Version 1.1 (November 16, 2012)

Standard full software application packages and graphical user interfaces. Compatible with Windows XP, Vista, and 7.

* The software packages supports NI LabVIEW from version 8.5 onwards. For earlier versions the code can be converted. Please contact Technical Support for details.