Installation Guide for Dwyer 2000-750PA Differential Pressure Gauge

Posted on: 13/04/2026

A comprehensive technical guide on how to install the Dwyer 2000-750PA differential pressure gauge. Includes mounting angles, pressure port connections, and zeroing procedures according to the official datasheet. Distributed by DLK Vietnam.

Installation Guide for Dwyer 2000-750PA Differential Pressure Gauge

In cleanrooms, HVAC systems, or environments requiring strict pressure control, correct installation is the foundation of accuracy. This guide provides step-by-step instructions for installing the Dwyer 2000-750PA—a specialized model with a 0-750 Pa range—ensuring durability and peak performance for your project. This product is officially distributed by DLK TRADING SERVICE COMPANY LIMITED.

Why Correct Installation Matters for Model 2000-750PA

The Series 2000 Differential Pressure Gauge operates on the frictionless Magnehelic mechanical principle. With its mid-range sensitivity of 0-750 Pa, the device is highly precise. Improper mounting angles or leaking connections will lead to measurement drift, directly impacting the efficiency of your ventilation system.

Standard Installation Procedure

Based on the official Magnehelic Series 2000 datasheet, follow these technical steps:

1. Selecting Location and Mounting Angle (Critical)

Environment: Choose a location free from excessive vibration, direct sunlight, and extreme heat sources.
Mounting Angle: Dwyer gauges are factory-calibrated in a vertical position (with the dial face perpendicular to the ground). If mounted horizontally or at an angle, the pointer will deviate from zero due to the effect of gravity on the internal diaphragm.

2. Securing the Device

Use the provided mounting holes at the back or the included mounting ears to secure the gauge to a wall or a control panel surface.
Ensure the mounting surface is flat to avoid distorting the die-cast aluminum housing.

3. Connecting Pressure Tubing

The Dwyer 2000-750PA features two sets of 1/8" NPT pressure ports (side and back):

"High" Port (High Pressure): Connect to the area with higher pressure or leave open if measuring positive room pressure.
"Low" Port (Low Pressure): Connect to the area with lower pressure or leave open if measuring negative room pressure.
Pro Tip: Apply thread sealant (PTFE tape) to the fittings to ensure an airtight seal.

4. Zero Adjustment

Once the gauge is securely mounted in its final position and before pressure is applied to the lines:

Use a small flat-head screwdriver to turn the "Zero" adjustment screw located at the bottom of the plastic cover until the pointer aligns exactly with the zero mark.

Common Installation Troubleshooting

Reverse Readings: If the pointer moves below zero, the High and Low lines are reversed. Simply swap the tubing at the ports.
Moisture Accumulation: In humid environments, ensure the tubing has a downward loop (drip leg) before entering the gauge to prevent condensation from entering the diaphragm chamber.

Technical Specifications (Model 2000-750PA)

Feature	Technical Specification
Measurement Range	0 - 750 Pa
Accuracy	±2% of Full Scale
Operating Temperature	20 to 140°F (-6.7 to 60°C)
Connections	1/8" female NPT (2 High ports, 2 Low ports)
Housing Material	Die cast aluminum
Included Accessories	2 port plugs, 2 tubing-to-pipe thread adapters, 3 mounting lugs