Dif­fe­ren­tial pres­sure trans­mit­ter – HE 5409

For monitoring the differential pressure of air or other non-flammable and non-aggressive gases.


Perfect for filter monitoring

Approval for EX Zone 2 and Zone 22

Ideal supplement for valve control HE 5731

Exact detection of differential pressures for gases

Quick commissioning due to easy mounting and easily accessible connection area




Produkt anfragen



Dif­fe­ren­tial pres­sure trans­mit­ter – HE 5409

Dif­fe­ren­tial pres­sure must be recor­ded and moni­to­red when small pres­sure dif­fe­ren­ces can have large effects.
Dif­fe­ren­tial pres­sure trans­mit­ters thus take on important tasks in plant engi­nee­ring: they not only check the con­di­tion of fil­ter sys­tems, but also moni­tor the volume flows of ven­ti­la­tion and air-con­di­tio­ning sys­tems or mea­sure levels in liquid con­tai­ners.


The dif­fe­ren­tial pres­sure trans­mit­ter HE 5409 relia­bly pro­vi­des exact mea­su­red values and is also cha­rac­te­ri­zed by fast com­mis­sio­ning due to 2-wire tech­no­logy.


For inte­gra­tion into your risk assess­ment, the HE 5409 sup­ports you with qua­li­fied values for MTBF and MTTFd.



Quick assem­bly

The housing is ope­ned and clo­sed wit­hout screws thanks to hinge tech­no­logy. This saves time during assem­bly. To open the device, sim­ply place a flat-blade screw­dri­ver at the desi­gna­ted point on the housing cover to pry open the locking mecha­nism. The housing cover remains on the device due to the hinge tech­no­logy and does not have to be com­ple­tely dis­mant­led, as it can be ope­ned up to an angle of 105°.


The mea­su­ring ran­ges available as stan­dard can be found under TAB­Tech­ni­cal Data”. Spe­cial mea­su­ring ran­ges are available on request.

Areas of application

– ventilating and air-conditioning systems
– heating technology
– filter monitor
– flow monitoring
– building services engineering
– firing technology
– extraction systems

Technical data

HE 5409
Mess­be­reich (mbar)0–10; 0–25; 0–50; 0–100; 0–1000
Max. Dif­fe­renz­druckMess­be­reich 0–10 mbar: 100 mbar
Mess­be­reich 0–100 mbar: 750 mbar
Mess­be­reich 0–1000 mbar: 4000 mbar
MediumLuft, sowie tro­ckene, nicht aggres­sive Gase
Grund­ge­nau­ig­keit± 1 % vom End­wert
Tem­pe­ra­tur­drift± 0,05 % / K vom End­wert
Hilfs­en­er­gieUb = 10…36 V DC
Ana­log­aus­gang4…20 mA, 2-Lei­ter­tech­nik
Max. zuläs­sige BürdeRA ≤ (Ub – 9 V) / 0,02 A
Druck­an­schlussSchott-Steck­ver­schrau­bun­gen für 6 mm
GehäuseStaub­dich­tes Poly­car­bo­nat­ge­häuse
Abmes­sung113 × 80 × 60 (B × H × T)
Schutz­artIP 65
Mon­tageWand­mon­tage, Ein­bau­lage senk­recht
Kabel­ver­schrau­bung1 × M 16 × 1,5 N für Kabel­durch­mes­ser von 4…8 mm
EX Logo II3D Ex tc IIIC T135° Dc

EX Logo II3G Ex nR IIC T4 Gc
Kli­ma­ti­sche Umge­bungs­be­din­gun­gen
Lage­rung-20° … +70° C
Trans­port-40° … +85° C
Betrieb-20° … +55° C
Rela­tive Luft­feuchte75 % rel. Feuchte, keine Betau­ung
Sicher­heits­tech­ni­sche Kenn­zah­len
MTBF646 Jahre
MTTFd1292 Jahre
MTBFMax. 10 Jahre
Kate­go­rie nach
EN-ISO 13849
Berech­nungs­ver­fah­ren nach EN-ISO 13849Parts-Count

Errors and omis­si­ons excepted


Data sheet HE 5409 – Ger­man

Data sheet HE 5409 – Polish


Ope­ra­ting Ins­truc­tions HE 5409 – Ger­man

Ope­ra­ting Ins­truc­tions HE 5409 – Eng­lish


Dril­ling tem­p­late for HE 5409


EPLAN Macro – Dif­fe­ren­tial pres­sure trans­mit­ter HE 5409

Part numbers

Mess­be­reich (mbar)Arti­kel­num­mer
-10…10 #54090999


    ACHTUNG: Zum Absenden des Formulars muss der rechtliche Hinweis mit einem Häkchen bestätigt werden.