This product is no longer available and has been replaced by: CS106. Some accessories, replacement parts, or services may still be available.
CS105 Vaisala PTB101B Barometer


The CS105 measured barometric pressure for the range of 600 to 1060 mb (approximately sea level to 12,000 feet). A 12 V switching circuit was included in the sensor; a datalogger control port was used to control 12 Vdc power to the sensor, reducing power consumption. A sensor warm-up time of up to 1 second was recommended.



Accuracy ±0.5 mb (@ +20°C)
Temperature Range -40° to +60°C
Dimensions 6.1 x 6.1 x 2.0 cm ( 2.4 x 2.4 x 0.8 in.)


Datalogger Considerations

A 2.5-ft cable is supplied with the sensor for connection to the datalogger. The cable connects to a control port, single-ended analog input terminal, 12 V power terminal, and ground terminal on the datalogger.

Compatible Contemporary Dataloggers

CR200(X) Series CR800/CR850 CR1000 CR3000 CR5000 CR9000X

Compatible Retired Dataloggers

CR500 CR510 CR10 CR10X 21X CR23X CR9000 CR7X


The CS105 is typically mounted next to the datalogger inside an ENC12/14 or larger enclosure. The very small ENC100 is available for housing the CS105 separately, in its own enclosure.

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