Dwyer 490A Liquid Differential Pressure Gauge
Liquid differential pressure gauge, wetted parts 316L stainless steel, measures differential pressure of liquids or gases, includes water level gauge kit.
- Original Factory Genuine, Tenfold Compensation for Counterfeits
- Full Machine Warranty, Lifetime Maintenance
- In Stock, Shipped on the Same Day
The 490A liquid differential pressure gauge features 316L stainless steel wetted parts, compatible with most liquid media, accuracy ±0.5% FS. It offers field-adjustable damping to suppress reading fluctuations and is supplied with a water level gauge kit, pressure probes and a hard carrying case, suitable for pump head and water treatment pipeline differential pressure testing.
| Parameter Name | Technical Specifications |
|---|---|
| Main specifications | |
| Medium | Compatible liquids or gases |
| Wetted materials | No valve: 316L stainless steel; -3V option: 316L SS, Buna-N, silicone, grease, PTFE, brass 360, copper, reinforced acetal copolymer |
| Accuracy | ±0.5% FS: 60~78°F (15.6~25.6°C); ±1.5% FS: 32~60°F and 78~104°F (0~15.6°C and 25.6~40°C). |
| Pressure hysteresis | ±0.1% FS. |
| Pressure limits | See selection table |
| Temperature limit | 32~140°F (0~60°C). |
| Storage temperature | -4~176°F (-20~80°C). |
| Display | 0.42" (10.6 mm) 4-digit LCD. |
| Resolution | See selection table |
| Power Supply | 9 V alkaline battery, user replaceable |
| Process connection | 2 x 1/8" (3.18 mm) NPT female |
| Weight | 14.1 oz (400 g). |
| Certification | CE. |
| Model selection | |
| Selection table | 官网以选型表截图发布，完整型号与量程见资料包内官方手册《490A_i1.pdf》 |
- Wetted material 316L stainless steel, compatible with most liquid media
- Accuracy ±0.5% FS (15.6~25.6°C)
- Field-adjustable damping for fluctuating conditions
- Supplied with water level gauge kit, pressure probes and hard carrying case
Pump head and differential pressure testing
Measure the differential pressure between pump inlet and outlet to calculate head and operating efficiency.
Water treatment pipeline differential pressure inspection
Measure the differential pressure across filters and heat exchangers to detect blockages.
Need selection advice or bulk quotation?
Send us the working condition parameters (signal type, medium, range, pressure, temperature, connection method), and our engineers will provide a selection scheme and quotation within 1 working day.
- Phone consultation +86-21-66020232
- Email inquiry web@qishan-sh.com
