Mipex MIPEX-04, Руководство пользователя, Страница: 10 / 41

Optosense LLC USER MANUAL
Design department MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR
ESAT.100000.00.02 UM Revision 02 December 12th, 2016 Page 10 of 41
THE SOLE PROPERTY OF OPTOSENSE LLC. ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED.
6. INSTALLATION AND SERVICE

MIPEX-04 may accumulate an electrostatic charge on its housing. Thus,
there is risk of electrostatic discharge. Clean only using a damp cloth. Note
this during installation and use of sensor in the end-user equipment.

Sensor must be mounted with its contacts soldered to mating PCB pads.
Using of brazing furnace for this purpose is not allowed. Soldering conditions
stated in 6.2 must not be violated. Spot soldering only.

Maximum pressure load on sensor top surface must not exceed 1 MPa.

It is not allowed to apply pressure on sensor side surface.

Span calibration is necessary during initial installation to gas analyzers and
during preparation for the yearly tests. Manual zeroing must be performed
after prolonged storage without power supply, after transportation as well as
after dust filter is applied (see Appendix D.1).

It is required to perform span calibration at least once in 2.5 years.
6.1. Preparation

If sensor has been kept in transport containers at temperatures below zero centigrade,
leave it at 10…35 °C for at least an hour.

Remove the packaging. Make sure there are no mechanical injuries on sensor surfaces.
6.2. Mounting
Sensor should be mounted with its contacts soldered to mating PCB pads. Spot soldering
only. Maximum soldering temperature is 350
°C; maximum soldering time is 3 s.
Recommended mating board configuration and sensor pinout are shown in Appendix A.
End-user equipment design has to provide that sensor is free of excessive pressure on its
housing, ingress of dust, dirt and condensed moisture, as these factors may affect the accuracy of
measurement. It is recommended to use dust filter (available as an option; see Appendix E). Filter
has to be checked regularly and replaced when fouling is significant.
6.3. Electrical conditions

During first 0.01 seconds after power up, sensor consumes up to 18 mA (see
Fig. 1).

During operation MIPEX-04 has pulsed power consumption. Pulse repetition
period is about 320 ms, maximum surge current is 4 mA. Average power
consumption is 35
μA (see Fig. 2 and Fig. 3).

Sending any command more often than one time per 2 second (0.5 Hz) may
reduce sensor accuracy and increase its current consumption.
Use intrinsically safe circuit connections represented in Appendix B.
Sensor power supply has to follow requirements of IEC 60079-0 and IEC 60079-11, with
rated output range of intrinsically safe DC voltage U
0
of +
2.8…+5.0 V, with rated power range P
0
of
0.02…0.13 W. Current provided by power supply unit must be 20 mA ≤ I
0
≤ 200 mA.