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      Dwyer Instruments 478A-0 | Digital differential manometer | Range -4 to 4" w.c.
Positive, negative, or differential pressures can be measured with the Dwyer 478A differential pressure digital manometer. It provides an immediate selection option with up to nine English and metric units, one-button auto-zero, and ±1.5% FS accuracy. The 478A is made to last because to its durable aluminum casing and auto power-off feature, which extends battery life.
- Specifications
 - Features
 - Downloads
 
| Accuracy | +/-1.5% FS @ 72°F (22.2°C). Includes linearity and repeatability | 
| Approvals | CE | 
| Connection | Process: For use with 3/16" or 1/4" I.D. tubing | 
| Display | 4 digit LCD (.425"H x .234"W digits) | 
| Material | Wetted: Consult factory | 
| Maximum Operating Pressure | 5 psig (.74 bar) | 
| Maximum operating temperature | 0 to 140°F (-17.8 to 60°C) | 
| Power | 9 V alkaline battery, installed non-functional, user replaceable | 
| PRESSURE | Hysteresis: +/-0.1% of FS | 
| Range | -4 to 4" w.c. | 
| Temperature | Compensated Temperature Limits: 32 to 104°F (0 to 40°C) | 
| Thermal Effect | 0.05% FS/°F | 
| Weight | 10.8 oz (306 g) | 
- Accuracy at full scale ±0.5%.
 - Durable aluminum extrusion housing.
 - Auto-zero function with one button.
 - Automatic shut-off feature to prolong battery life.
 - Select up to nine English/metric units instantly.
 
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