Microtronics BLE mA Link, User Manual, Page: 13 / 46

Chapter 4 General specifications
4.7 Intended use
The portable instrument enables the measurement value recorded by a compatible measurement instrument
to be issued locally as a 4-20 mA signal. Communication with the measurement instrument is realised via
Bluetooth Low Energy. The device itself is battery-operated. The power for the 4-20 mA current loop,
however, must be supplied externally. The maximum permissible limit values (specified in chapter
"Specifications" on page 7) must be observed. The manufacturer shall not be liable for any operational cases
that deviate from these limit values and have not been approved by the manufacturer in writing.
Note: This device is exclusively intended to be used for the purposes as described before. Any other
use or use beyond what is specified or a modification of the device shall be deemed to be not for the
intended purpose and is not permitted without the express written consent of the manufacturer. The
manufacturer shall not be held liable for any damages that may result from such unauthorised use or
modification. The operator alone bears the associated risk.
Note: The manufacturer is not liable for data loss of any kind.
4.8 General product information
The device is a compact, portable instrument that enables the gas values measured by the myDatasens to be
issued locally as a 4-20mA signal. Communication between myDatasens and BLE mA Link is realised via
Bluetooth Low Energy. The scale of the output signal is automatically adjusted to the measurement range of
the gas sensor being used. If, for example, sensor type H2S H7 (0-200 ppm) is used, a gas value of 0 ppm
equates to an output signal of 4 mA. At a gas value of 200 ppm, the output signal equals 20 mA. The BLE mA
Link is equipped with an internal battery to supply the integrated logic (BLE module, controller and
controllable current sink). The capacity of the installed battery is designed for a max. service life of 5 . The
power for the 4-20 mA current loop must be supplied externally (see "Technical details about the output" on
page 28).
4.9 Device labelling
The specifications in this user manual apply exclusively to the BLE mA Link device type. The type plates are
located on the top and sides of the device and contain the following specifications:
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Type designation
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Serial number
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Hardware revision
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Item number
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Ex protection designation as specified in chapter "Declaration of conformity" on page 5
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Week and year of production
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Environmental conditions during operation
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Protection class
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Name and address of the manufacturer
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Chemical composition of the installed battery
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Logo for the EU WEEE Directive
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CE marking
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Ex parameters as specified in chapter "Declaration of conformity - Appendix" on page 6
Rev. 01 13