For over a decade Star-Oddi has developed small data loggers for various industries and research applications. A new addition is a PU monitor, a small pasteurization data logger called DST milli-PU that fits into bottles and cans and measures temperature and optionally pressure. Data is displayed in a graph and table along with PU values.
Easy to handle, small and lightweight
Temperature and pressure recordings are time related. Data retrieved into the application software
Automatic graphical presentation of Pasteurization Unit (PU) along temperature and optionally pressure
Standard calibration of 0-80°C temp, and 0.06-10 bar pressure
Eliminates the possibility of leaks
Total memory size 43476 measurements
User defined sampling intervals (sec, min, hours)
Data can be exported into other programs
Dimensions are 38.4mm (length) x 12.5mm (diameter)
Affordable prices
Due to the small size of the logger, the PU monitor can easily be fitted inside the cans or bottles. The sample can or bottle will therefore be processed through tunnel pasteurization process with other cans/bottles. The supporting software SeaStar, automatically displays the Pasteurization Units (PU) both in a graphical presentation and in tabular forms. Temperature and pressure recordings are time related. 
The DST milli-PU data logger is a small temperature and pressure logger that is placed inside a sample can or bottle with a "Spider Cap" bracket that places the data logger in the center of the can/bottle, insuring accurate data collection and minimizing the possibility of leaks. The DST milli-PU logger dimensions are 38.4mm (length) x 12.5mm (diameter).The main purpose of the small pasteurization data logger is to improve the biological stability of the final product.
The data is stored into the internal memory of the PU monitor / logger. The data can then be retrieved once the recorder has passed through the pasteurizer. It gives the following control data:
- Transit time
- Time spent above 60°C (all measurments are time related)
- Maximum temperature
- Total accumulated pasteurization units
DST milli-PU is supported by the FoodStar software for Windows, and a communication box which connects to a PC computer. All communications and data transfer is wireless via the communication box. Prior to usage, and for data retrieval, the DST is inserted into the box for establishing communication through the SeaStar software. The recordings can be initiated instantly or at any time in the future. All data can be easily exported into other programs such as Microsoft Excel.
The user sets the start date/time and sampling interval. After retrieving the data, the pasteurization data logger can be re-programmed and reused as long as the battery lasts.
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Size (diameter x length) |
12.5 mm x 38.4 mm |
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Weight (in air/in water) |
9.2g / 5g |
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Memory capacity |
21,738 measurements pr. sensor* |
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Memory type |
Non-volatile EEPROM |
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Data retention |
25 years |
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Temperature range |
0 to +85°C (30°F to 185°F)** |
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Pressure range |
0.06 - 10 bar** |
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Resolution temperature |
0.032°C |
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Resolution pressure |
0.0003 bar (for 10 bar pressure range) |
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Accuracy temperature |
+/-0.2°C |
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Accuracy pressure |
+/-0.045 bar (for a 10 bar pressure range) |
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Response time temp. |
20 seconds (time constant 63%) |
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Response time pressure |
Immediate response |
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Clock |
Real time clock. Accuracy +/-1 min/month |
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Sampling interval |
In second(s), minute(s), or hour(s) |
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Computer interface |
Com box with RS-232C serial, or optionally USB
RF wireless communications with PU logger |
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Battery life |
2 years*** |
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Attachment hole |
0.9 mm (in diameter) |
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* DST milli-PU is available with a temperature sensor only, double increasing the memory capacity.
** Other ranges available upon request.
*** For sampling interval of 5 minutes or greater.
Specifications may change without notice.
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