Siemens Building Technology QFA3230.FWSN Sensor 318172-701 by connecting the sample line

by connecting the sample line to the low-pressure (L) inlet while leaving the high-pressure (H) inlet open to the atmosphere

This hi-limit switch is typically used in low-voltage safety strings

DPR1000 (including B and D series)

Industrial Build: Features heavy-duty 460V 3-phase construction to handle high-amperage cycles without premature failure

In VAV terminal units and multi-zone air handling systems

Siemens Building Technology QFA3230.FWSN Sensor 318172-701 by connecting the sample lineThe Siemens QFA3230. FWSN is a high precision room relative humidity sensor engineered for demanding building automation environments. Designed to interface seamlessly with controllers via 0 10Vdc or 4 20mA selectable outputs, this unit provides critical environmental data for variable air volume (VAV) systems and air handling units (AHUs). It offers a full 0 100% RH measurement range paired with a 10k? Type II thermistor for integrated temperature