Series-DPGA-DPGW

Supported Applications

The Dwyer Series DPGA and DPGW are digital pressure gauges designed for measuring air, compatible gases, and liquids. The product overview identifies these units as suitable for process applications, process start-up, and OEM applications.

• DPGA Models: Air and compatible gases
• DPGW Models: Liquids and compatible gases

Operating Conditions & Performance

The series delivers a specified accuracy of ±1.0% FS (includes linearity, hysteresis, repeatability). Measurement ranges span from 30" Hg to 0 (vac) up to 0 to 500 psi, with resolution values varying by range: 0.001 psi for the 20 in w.c. and 1 psi models; 0.002 psi for the 5 psi model; 0.01 psi for ranges from 30" Hg to 0 (vac) through 30 psi; 0.02 psi for the 50 psi range; 0.1 psi for 100, 200, and 300 psi ranges; and 0.2 psi for the 500 psi range.

Operating ambient temperature is limited to 30 to 120°F (-1 to 49°C). The pressure rating supports up to 2X the pressure range, with a maximum vacuum range pressure of 30 psig. A thermal effect of 0.05% FS/°F applies.

Configuration Options

Housing and Construction

• Housing Material: ABS plastic
• Dimensions (DPGA & DPGW): 2.62" O.D. x 1.52" deep
• Weight: 5.6 oz (160 g)

Sensor and Wetted Materials

The wetted materials differ by service type to ensure compatibility with the intended media.

• DPGA & DPGAB: Type 316L SS, silicone sensor
• DPGW & DPGWB: Type 316L SS; Ceramic Ranges: Type 316L SS, ceramic, fluor elastomer (Note: Gages with a 'C' in the range have a ceramic sensor)

Power and Display

The units are powered by a 9 V alkaline battery, included but not connected. Features include a 4-digit LCD display to eliminate parallax error, auto zero capability, selectable engineering unit conversion, and a 20-minute auto shut-off function.

Process Connection

• Type: 1/4" male NPT

Options and Accessories

• NIST Traceable Calibration Certificate: Available by adding the suffix -NIST to the model number.
• Protective Rubber Boot (Model A-293): Listed as an accessory; specifically noted for DPGWB models in related series documentation.

Key Product Differences

The Series DPGA and DPGW are distinguished primarily by their intended media service. The DPGA line is configured with a silicone sensor wetted material suitable for air and compatible gases, while the DPGW line utilizes Type 316L SS (and ceramic/fluor elastomer on specific ranges) for liquids and compatible gases.

Model numbering follows the pattern [Series]-[Range Code]. For example, DPGA-04 corresponds to a 0 to 5 psi range with 0.002 psi resolution, while DPGW-11 covers 0 to 500 psi with 0.2 psi resolution. Compound ranges are available in the broader family (e.g., DPGW-12: 30" Hg-0-100 psi), though specific availability should be verified against current variant listings.

While this series focuses on ±1.0% FS accuracy, related models within the same product line (DPGAB and DPGWB) offer a higher precision of ±0.5% FS in similar housings with protective rubber boots for rugged environments.