Differential Pressure Gauge JH Gauge 0 point 5 H2O PSI

Description

Product Overview

The JH Gauge Differential Pressure Gauge is engineered for precise low‑pressure measurement in air and non‑corrosive gas applications. It offers a measurement range of 0 to 0.5 inches of water, delivering ±2% accuracy at 70 °F and a maximum pressure rating of 15 PSI. Constructed from high‑grade aluminum, the gauge is both lightweight and robust, resisting wear in demanding industrial environments. Dual 1/8‑inch female NPT ports provide flexible installation options, with duplicated side and back connections for high and low pressure taps. The clear, analog dial display features easy‑to‑read markings, enabling quick verification of fan pressures, blower pressures, filter resistance, furnace drafts, and pressure drops across orifice plates.

Usage

This gauge excels in a variety of settings where accurate low‑pressure monitoring is critical. In HVAC systems, it helps technicians verify fan and blower performance, ensuring optimal airflow and energy efficiency. In industrial filtration setups, the gauge measures pressure drop across filters, signaling when replacement is needed. It is also suitable for furnace draft checks, laboratory air flow studies, and any application requiring reliable measurement of small pressure differentials in air or compatible gases (excluding hydrogen). The compact 4.75 × 4.75 × 2.19 in. size and 1.5 lb weight allow easy mounting on panels, pipe sections, or test rigs.

Why Choose Us

Choosing the JH Gauge means selecting a product backed by over a decade of precision‑instrument expertise. Each gauge undergoes rigorous calibration to meet the ±2% accuracy specification, providing confidence in every reading. The aluminum housing not only reduces overall weight but also offers corrosion resistance, extending service life even in harsh environments. Our gauges are manufactured in compliance with industry standards, and each unit includes a detailed user manual and calibration certificate. In addition, JH Gauge provides responsive technical support and a straightforward return policy, ensuring that customers receive the assistance they need throughout the product lifecycle.

Key Features

• Accurate low‑pressure measurement from 0 to 0.5 inches of water, ideal for HVAC and filtration monitoring.
• ±2% accuracy at 70 °F ensures reliable data for critical process control.
• Lightweight aluminum construction provides durability while simplifying installation.
• Dual 1/8‑inch NPT ports with side and back connections give flexible mounting options.
• Comprehensive after‑sales support, including calibration certificates and technical assistance.

FAQ

What types of gases can be measured with this gauge?

The gauge is suitable for air and most non‑corrosive gases. Hydrogen is excluded due to its unique properties, but it works well with nitrogen, oxygen, and typical process gases used in HVAC and industrial applications.

How do I install the dual NPT connections?

Each side of the gauge features a 1/8‑inch female NPT port. Connect the high‑pressure line to the “H” port and the low‑pressure line to the “L” port. The duplicated side and back connections allow you to choose the most convenient orientation for your piping layout.

Can the gauge be used outdoors?

While the aluminum housing offers good resistance to environmental factors, the gauge is rated for indoor use where temperature remains near the calibration point of 70 °F. For outdoor installations, protect the gauge with a suitable enclosure to avoid exposure to extreme weather.

What is the warranty period for this product?

JH Gauge provides a one‑year limited warranty covering manufacturing defects. Should any issue arise within this period, contact our support team for a replacement or repair.

How often should the gauge be calibrated?

For most applications, an annual calibration is recommended to maintain the ±2% accuracy specification. In high‑precision environments, more frequent checks may be advisable.