Pressure monitor for hot water, steam, gas, fuel (DWR)
|
|
| For overpressure monitoring of steam, hot water, burnable gases, liquid fuels. |
|
| Kind of pressure |
overpressure, relative |
| Pressure connection |
internal thread G1/4, external thread G1/2 |
| Electrical connection |
Plug DIN 43650 |
| Protection class |
IP54 |
| Housing material |
rugged housing of seawater resistant aluminium die casting GD Al Si 12 |
| Sensing element material |
1.4104 + 1.4571 |
| Media temp. |
-25 ... 70 oC |
| Media temp. limit |
temperatures up to 85 oC are allowable for short periods. 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 |
-25 ... 70 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 250 Vac; capacity 5 A inductive, 8 A resistive |
| Mechanical lock/reset |
with special function possible |
| Optional functions |
add the type numbers below to the listed type numbers for extra functionality as described
| • |
-213: gold-plated contacts, switching capacity: max. 24 Vdc, 100 mA, min. 5 Vdc, 2 mA. And others not available with adjustable switching difference. |
| • |
-301: terminal connection housing, IP65 |
| • |
-513: Gold-plated contacts, single-pole switch-over. Switching differential permanent. IP65. Switching capacity: max. 24 Vdc, 100 mA, min. 5 Vdc, 2 mA, suitable isolating switching amplifier, degree of protection EEx-i |
| • |
-574: Normally closed contact with resistance combination for minimum pressure monitoring. Gold-plated contacts. Housing with surface protection (chemical version), IP65 |
| • |
-575: Normally closed contact with reclosing lock-out resistance combination for minimum pressure monitoring. Housing with surface protection (chemical version), IP65 |
| • |
-576: Normally closed contact with resistance combination for maximum pressure monitoring. Gold-plated contacts. Housing with surface protection (chemical version), IP65 |
| • |
-577: Normally closed contact with reclosing lock-out and resistance combination for maximum pressure monitoring. Housing with surface protection (chemical version), IP65 |
|
| Certificates |
| • |
ID 0000007042 according VdTUEV Memorandum Pressure 100/1, Issue 4.83 |
| • |
NG-4347AQ1411 according to DIN 3398, Part 3, Issue 11.92 |
| • |
3C028/5 according to DIN 3398, Part 4, Issue 10.86 |
| • |
CE0035BN004 according Directive 97/23/EC (Module B + D) |
| • |
SIL2 according IEC 61508 |
|
| Pressure adjustment range | Adjustable switching differential | Switching differential | Max. pressure | Allowable max. gas-pressure (DIN3398P3) | Type |
|---|
| bar | bar | bar | bar | bar | |
|---|
| 0.1 ... 0.6 | — | 0.04 | 6 | 6 | DWR06  |
| 0.2 ... 1.6 | — | 0.06 | 6 | 6 | DWR1 |
| 0.2 ... 2.5 | — | 0.1 | 16 | 10 | DWR3 |
| 0.5 ... 6 | — | 0.2 | 16 | 10 | DWR6 |
| 0.5 ... 6 | — | 0.25 | 25 | 20 | DWR625 |
| 3 ... 16 | — | 0.5 | 25 | 20 | DWR16 |
| 4 ... 25 | — | 1 | 63 | 50 | DWR25 |
| 8 ... 40 | — | 1.3 | 63 | 50 | DWR40 |
| Pressure adjustment range | Adjustable switching differential | Switching differential | Max. pressure | Allowable max. gas-pressure (DIN3398P3) | Type |
|---|
| bar | bar | bar | bar | bar | |
|---|
| 0.1 ... 0.6 | 0.08 ... 0.5 | — | 6 | 6 | DWR06-203 |
| 0.2 ... 1.6 | 0.15 ... 0.6 | — | 6 | 6 | DWR1-203 |
| 0.2 ... 2.5 | 0.17 ... 1.2 | — | 16 | 10 | DWR3-203 |
| 0.5 ... 6 | 0.3 ... 1.4 | — | 16 | 10 | DWR6-203 |
| 0.5 ... 6 | 0.4 ... 2.5 | — | 25 | 20 | DWR625-203 |
| 3 ... 16 | 0.75 ... 3.15 | — | 25 | 20 | DWR16-203 |
| 4 ... 25 | 1.3 ... 6 | — | 63 | 50 | DWR25-203 |
| 8 ... 40 | 2.3 ... 6.6 | — | 63 | 50 | DWR40-203 |
