| Size | Micro | ||
| Actuator lock | Rotary knob with detent | ||
| Design | Directly actuated diaphragm regulator | ||
| Symbol | 991.538 | ||
| Operating pressure | 1 bar ... 10 bar | ||
| Max. pressure hysteresis | 0,3 bar | ||
| Air purity class at output | Compressed air to ISO 8573-1:2010 [7:4:4] Inert gases | ||
| Ambient temperature | -10 °C ... 60 °C | ||
| Type of mounting | In-line installation With accessories Either: | ||
| Pneumatic connection, port 2 | QS-4 | ||
| Material sub-base | Wrought aluminium alloy | ||
| Material housing | Wrought aluminium alloy |
| Series | D | ||
| Mounting position | optional | ||
| Controller function | With secondary venting | ||
| Pressure gauge (ANALOG) or Pressure display (DIGITAL) | With pressure gauge | ||
| Pressure regulation range | 0,5 bar ... 7 bar | ||
| Operating medium | Compressed air to ISO 8573-1:2010 [7:4:4] Inert gases | ||
| Media temperature | -10 °C ... 60 °C | ||
| Product weight | 110 g | ||
| Pneumatic connection, port 1 | QS-4 | ||
| Note on materials | RoHS-compliant | ||
| Material seals | NBR | ||
| Material membrane | NBR |
