Pressure Switch for Gas DG
• Monitoring of gas and air pressures (positive, negative and differential pressures)
• Certified for systems up to SIL 3 and PL e
• With approved isolating amplifier for Zone 1 and 2 hazardous areas
• EU certified pursuant to EN 1854 and class “S”
• DG..S: special version available for NH3 and O2
Type & Positive pressure
DG..B — Gas, air, flue gas or biomethane
DG..U, DG..T — Gas, air, flue gas or biomethane
DG..H, DG..N, DG..HT, DG..NT — Gas, air, flue gas or biomethane
DG..I– Air or flue gas
DG..S — NH3 or O2
| Code | Description |
| DG | Pressure switch for gas |
| 1,5 | Negative pressure, adjusting range -1,5 to -0,5/+0,5 to +3 mbar |
| 6 | Adjusting range 0,4 to 6 mbar |
| 10 | Adjusting range 1 to 10mbar |
| 12 | Negative pressure, adjusting range -12 to -1/+1 to +7 mbar |
| 18 | Negative pressure, Adjusting range -2 to -18 mbar |
| 30 | Adjusting range 2,5 to 30 mbar |
| 50 | Adjusting range 2,5 to 50 mbar |
| 120 | Negative pressure, adjusting range -10 to -120 mbar |
| 150 | Adjusting range 30 to 150 mbar |
| 400 | Adjusting range 50 to 400 mbar |
| 450 | Negative pressure, adjusting range -80 to -450 mbar |
| 500 | Adjusting range 100 to 500 mbar |
| B | Positive pressure |
| U | Positive pressure, negative pressure, differential pressure |
| H | Locks off with rising pressure |
| N | Locks off with falling pressure |
| I | Negative pressure for gas |
| S | Positive pressure only, for oxygen and ammonia |
| T | T-product |
| G | With gold-plated contacts |
| Electrical connection: | |
| -3 | via screw terminals |
| -4 | via screw terminals, IP 65 |
| -5 | via 4-pin plug, without socket |
| -6 | via 4-pin plug, with socket |
| -9 | via 4-pin plug, with socket, IP 65 |
| K2 | Red/green pilot LED for 24 V DC/AC |
| T | Blue pilot lamp for 230 V AC |
| T2 | Red/green pilot LED for 230 V AC |
| N | Blue pilot lamp for 120 V AC |
| A | External adjustment |
