DatasheetEx‑DDCM differential pressure switches are suitable for monitoring and controlling differential pressures, for flow monitoring, and for the automatic control of filter systems. A dual‑chamber system with a stainless‑steel bellows or a Perbunan (NBR) diaphragm detects the difference between the two applied pressures. The desired switching pressure can be continuously adjusted within the specified ranges. All differential pressure monitors can also be used in the vacuum range. The switching differential is not adjustable.
The device features a robust housing made of seawater‑resistant aluminium die‑casting (GD Al Si 12). Installation is carried out directly on the pressure line or on a flat surface using two screws Ø 4 mm.
Please observe the pressure connection assignment:
- P (+) = high pressure
- S (–) = low pressure
Certificates
- SIL2 according to IEC 61508‑2
- IBExU12ATEX1040 according to ATEX 2014/34/EU
- IECEx IBE 14.0077
Explosion protection
Differential pressure switch for hazardous (explosive) areas. Explosion protection type: Ex II 2G Ex d e IIC T6 Gb and Ex II 1/2D Ex ta/tb IIIC T80°C Da/Db
Applications
For pressure monitoring and differential pressure control of steam, gas, hot/cold water, and for filter monitoring.
| Kind of pressure | differential pressure, relative | ||||||
| Pressure connection | internal thread G1/4 | ||||||
| Electrical connection | terminal connection M16x1,5 | ||||||
| Protection class | IP65 | ||||||
| Housing material | rugged housing of seawater resistant aluminium die casting GD Al Si 12 | ||||||
| Media temp. | -20 … 60 oC | ||||||
| Media temp. limit | Higher temperatures are possible, provided that the limit is safeguarded by suitable measures (e.g. water tube trap, see Accessories for Pressure Switches / Transmitters) | ||||||
| Ambient temperature | -20 … 60 oC | ||||||
| Ambient temp. limit | at temperatures below 0 oC, ensure that no water condensation can arise in the sensor and in the switching device | ||||||
| Switch function/capacity | SPDT Microswitch; capacity 2 A inductive, 3 A resistive | ||||||
| Certificates |
|
| Pressure adjustment range | Switching differential | Max. pressure | Sensing element material | Type |
|---|---|---|---|---|
| bar | bar | bar | ||
| 0.004 … 0.025 | 0.002 | 0.5 | Perbunan + Aluminium | EX-DDCM252 |
| 0.01 … 0.06 | 0.015 | 1.5 | Perbunan + Aluminium | EX-DDCM662 |
| 0.02 … 0.16 | 0.02 | 3 | Perbunan + Aluminium | EX-DDCM1602 |
| 0.1 … 0.6 | 0.035 | 3 | Perbunan + Aluminium | EX-DDCM6002 |
| -0.1 … 0.4 | 0.15 | 15 | 1.4305 + 1.4571 | EX-DDCM014 |
| 0.2 … 1.6 | 0.13 | 15 | 1.4305 + 1.4571 | EX-DDCM1 |
| 1 … 4 | 0.2 | 25 | 1.4305 + 1.4571 | EX-DDCM4 |
| 0.5 … 6 | 0.2 | 15 | 1.4305 + 1.4571 | EX-DDCM6 |
| 3 … 16 | 0.6 | 25 | 1.4305 + 1.4571 | EX-DDCM16 |
| Description | Additional Product Type |
|---|---|
| Syphon for high temperature, steel, U-shape (for more accessories, see Accessories for Pressure Switches / Transmitters) | U430B |
