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Ashcroft digital vacuum gauge with transmitter, stainless steel, 3 inch dial, bottom NPT connection, IP65 rated

Ashcroft

Ashcroft 302174SD02LXBLBK300# Digital Vacuum Gauge with Transmitter 0 to 300 psi

SKU CH-5A5A-D77MD

Digital vacuum gauge with transmitter measures 0 to 300 psi and outputs 4 to 20mA DC with ±0.25% full-scale accuracy

  • TypeElectronic
  • Accurate readings within ±0.25 % full scale
  • Nine selectable pressure units for versatile use
  • 4–20 mA output integrates with control systems
  • IP65 rating protects against dust and water
  • 300 psi range covers demanding vacuum applications

Application fit

The Ashcroft 302174SD02LXBLBK300# digital vacuum gauge mounts directly onto a 1/4 in NPT male process connection at the bottom of the vessel or line. Its IP65 rating protects the electronics from dust and water jets in plant environments. The 4 to 20 mA DC output transmits the reading to a PLC, recorder or remote display without additional signal conditioning. Stainless-steel wetted parts withstand the media specified for the installation.

Measurement behaviour

Accuracy is held to ±0.25 % of full scale across the 0 to 300 psi range during continuous operation. The transducer maintains this tolerance while the output signal updates in real time, so control loops see a steady value rather than a momentary peak. Nine selectable engineering units let operators read bar, kPa, in Hg or other scales without recalibration. The 3 in nominal dial provides a clear local indication alongside the transmitted signal.

Highlights

  • Accurate readings within ±0.25 % full scale
  • Nine selectable pressure units for versatile use
  • 4–20 mA output integrates with control systems
  • IP65 rating protects against dust and water
  • 300 psi range covers demanding vacuum applications

Specifications

BrandASHCROFT
TypeElectronic

Questions about this item

What is the accuracy limit of the ±0.25% full-scale specification during sustained use?

The gauge maintains an accuracy of ±0.25 percent of full scale across the entire 0 to 300 psi range.

How does the IP65 rating affect heat dissipation when the transmitter runs continuously?

The IP65-rated enclosure protects against dust and water jets without active cooling, relying on ambient airflow for heat dissipation during continuous operation.

What power supply must I already have to operate the 4-20 mA output loop?

An external DC power source is required to drive the 4 to 20 mA current loop; the transmitter does not generate its own loop voltage.

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