Mipex MIPEX-02 1 Series, Руководство пользователя

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OPTOSENSE LLC
Design Department
USER MANUAL
SMALL-SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX-02-
Х-X-X.1 X
File name: ESAT.413347.006 UM v.2.0.docx Revision 2.0 27 August 2015 Page. 11 of 38
THE SOLE PROPERTY OF OPTOSENSE LLC. ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED.
- LOW logic level 0.9 V;
- Maximum output current of UART not more than 25 mA.
5.3 Proper use
It is recommended to use filter to protect the optical components of the sensor from dust,
excess moisture and other factors that could affect on readings accuracy. Take measures for
sensors dust protection in the equipment with forced gas pumping. A regular monitoring of the filter
and
it’s replacement is necessary (filter installation – see Appendix E).
The sensor outputs information about measured concentration value though the digital serial
interface UART. Data communication protocol is given in Appendix C.
The sensor is designed for continuous operation.
There is self-testing algorithm inside the firmware code.
Since 24.2 firmware version there is additional mode of low power consumption (to set low
power mode see C.3.2 of Appendix C). In low power mode sensor consumption is not more than
1.8 mW, but performance could be deteriorated.
Low power mode could be used as explosive gas indication mode even with deep battery
discharge in device.

MIPEX-02 has pulsing power consumption. Maximum current might shortly
rise up to 10 mA during 10 ms pulse length. Average consumption is less
than 1 mA (see Fig. 8).

In case if the sensor sends response for the commands via UART
maximum current consumption might rise up to 10 mA for 60 ms.

Since the power is supplied, during 40s the sensor does not return the
concentration value (the value is being displayed as “-1”). After that sensor
starts to transfer measured values.

Please note that if the dust filter from sensor’s kit was attached, then
ZERO2 command must be send after warm-up time.

Sensor updates information about concentration approx. every 1.3 sec.
Sending commands more often than 1 time per sec (sampling rate over
1Hz) is not recommended, otherwise the temperature sensor accuracy
comes down.
The setting of zero and calibration of the sensor is performed in the course of the
primary installation into a gas analyzer as well as annually during preparation to
conducting a check. In any cases the setting zero should be done before
calibration. Methods of setting zero of the sensor and re-calibration are given in
Appendix D).