Intrinsically Safe Pressure Transmitter for Industrial Use

brief description

Depending on customer requirements, the intrinsically safe pressure transmitter SMX2 can be offered for hazardous areas in zone 0 and zone 1 and meets the requirements of Directive IBExU 10 Atex 1014.

zone 0 - An area where an explosive atmosphere of a mix of air and combustible gases, vapours or sprays is permanently, over long periods or frequently prevails.

zone 1 - An area where an explosive atmosphere of a mix of combustible materials in the form of gas, vapour or spray with air occurs occasionally in normal operation.

Appropriate protective circuits guarantee inverse-polarity protection,overvoltage resistance and limitation of capacity loss in the event of any failure. Itswidely ranging industrial applications are guaranteed by its high precision and robustand compact design. The SMX2 can be combined with a lot of various mechanical and electrical connections.

product characteristics

  • explosion-proof certificate for zone 0 - II 1G Ex ia IIB T4 Ga or II 1G Ex ia IIC T4 Ga
  • explosion-proof certificate for zone 1 - II 2G Ex ia IIC T4 Gb
  • digital version: ZERO function, down scale 4:1
  • fully welded construction
  • high chemical / media compatibility by the use of stainless steel
  • high rate of pressure cycle widthstand

technical data

pressure range:
up to 600 mbar (8,7 PSI) with sensing-element silicon
up to 2000 bar (29.000 PSI) with sensing-element stainless steel
  up to 5000 bar (72.000 PSI) with sensing-element titanium
max over pressure: 2 times nominal pressure *
min burst pressure: 3 times nominal pressure *
output signals: 4-20 mA
response time [10-90%]:
≤1 ms (analog)/ ≤ 4 ms (digital)
accuracy: 0.5% F.S.  **
working temperature range (media): zone 0: -20 ... 60°C / -4 ... 140°F
  zone 1: -40 ... 100°C / -40 ... 212°F
working temperature range (ambient): zone 0: -20 ... 60°C / -4 ... 140°F
  zone 1: -40 ... 85°C / -40 ... 185°F
material of parts in contact with media:
stainless steel, silicon ***
material of housing: stainless steel ***
shock resistance (according IEC 68-2-32): 1000g
IP class (according IEC 60529): up to IP6K9K (depending on electrical connection & mating)
weight: ~150 g
minimum pressure cycles: 1*106
* for pressure ranges up to 1000 bar, for more information see data sheet
** for more information see data sheet
*** others on request