Explosion-proof barometric altimeter

Explosion-proof barometric altimeter with integrated data logger.

The Ex barometric altimeter device is a USB altimeter : it will give you an altitude estimate based on atmospheric pressure. The Ex barometric altimeter is precise enough to detect 10cm altitude changes. It will also give you the current pressure and temperature. Data can be recorded on the internal flash memory, in order to build a data history that can be retrieved later on over USB.

This circuit has been designed so that the sensor itself can be moved further away from the USB connector by a few meters: simply split the board into two parts and solder a 4-wire cable on the designated pads.

Note: To use the Ex barometric altimeter in a hazardous area, the device must be protected to at least IP 65, so it must be placed inside the enclosure.

Ex barometric altimeter don’t require any special drivers or software. Compatible with Windows, Mac OS, Android and Linux and easy to drive from a maximum of programming languages.

The Ex barometric altimeter is connected through an industrial USB 2.0 connector to an intrinsically safe barrier Ex USB 2.0.

The Ex barometric altimeter have a “hot-plug” function which allows them to be connected and disconnected without stopping, shutting down or rebooting the system.

Specifications:

USB connector: micro-B

Width: 20mm

Length: 60mm

Weight: 4g

Sensor: ICP-10100 (TDK)

Refresh rate: 8Hz

Measuring range: 0...10000m

Measuring range (P): 250...1100mbar

Sensitivity: 10cm

Protection class, according to IEC 61140: class III

Supported Operating Systems: Windows, Linux, Mac OS, Android

Сompliance: IP 65, RoHS

Electrical Data:

Uo=5 V

Io=50 mА

Ui=5 V

Ii=50 mА

Ci=10 µF

Ex marking:

Ex ib I Mb

Ex ib IIC T6...T4 Gb X

Ex tb IIIC T85°C...135°C Db

Produced in accordance with IEC 60079-0, IEC 60079-11, IEC 60079-31

Normal operating temperature: 5°C to 40°C

Extended operating temperature*: -20°C to 85°C

*Note: The extended temperature range is defined based on components specifications and has been tested during a limited duration (1h). When using the device in harsh environments for a long period of time, we strongly advise to run extensive tests before going to production.