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Ashcroft 1188S low pressure gauge with 4 1/2 inch white dial black phenolic case glass lens 1/2 NPT bottom connection

Ashcroft

Ashcroft 1188S low pressure gauge 0 to 100 psi 4 1/2 in dial 1/2 in NPT measurement tool

SKU CH-3QBN-BZ6SJ

Measures low pressure up to 100 psi with a 4 1/2 inch dial, 1/2 inch NPT connection and +/-2-1-2 percent accuracy

  • TypeElectronic
  • Accurate readings with ±2-1-2 % full-scale precision
  • Clear 4 1/2 in dial for easy visibility
  • Durable phenolic case resists harsh environments
  • Secure 1/2 in NPT male bottom connection
  • Glass lens protects dial from damage

Ashcroft 1188S low pressure gauge

This Ashcroft 1188S gauge measures low pressure from 0 to 100 psi on a 4 1/2 in dial. It is built for technicians and engineers who need reliable readings in industrial or commercial systems. The phenolic case and glass lens provide durability in workshop environments. A 1/2 in NPT male bottom connection fits standard process piping.

Accuracy class and case materials

The gauge meets a +/-2-1-2 percent accuracy specification across the scale. Its black phenolic case resists chemicals and impact better than metal alternatives. The white dial with glass lens ensures clear visibility under bright or dim lighting. No field-fillable liquid dampening is included, so the movement stays dry.

Pressure range and mounting limits

The 0 to 100 psi span covers typical low-pressure air, water and oil circuits. With a 5.38 in bolt circle, the gauge mounts securely on panels or brackets designed for that pattern. It lacks vibration resistance and an IP rating, so it suits steady, indoor applications rather than mobile or wash-down duty. Process connection size is fixed at 1/2 in NPT.

Highlights

  • Accurate readings with ±2-1-2 % full-scale precision
  • Clear 4 1/2 in dial for easy visibility
  • Durable phenolic case resists harsh environments
  • Secure 1/2 in NPT male bottom connection
  • Glass lens protects dial from damage

Specifications

BrandASHCROFT
TypeElectronic

Questions about this item

Will the 1/2 in NPT process connection on this 1188S gauge need periodic resealing or replacement under normal service?

The 1/2 in NPT male connection is a standard pipe thread; resealing with thread tape or compound is typical maintenance whenever the gauge is removed or reinstalled.

What is the first accuracy limit reached on the 0 to 100 psi dial during sustained pressure cycles?

The gauge is rated to +/-2-1-2 percent accuracy across the full 0 to 100 psi range; sustained cycling does not introduce a tighter limit beyond this specification.

How much heat does the phenolic case of this 4 1/2 in dial gauge dissipate when pressurised continuously all day?

The dry, non-fillable phenolic case relies on natural convection; no active cooling is fitted, so case temperature will track ambient and process fluid temperature.

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