Dwyer Series 645 Wet/Wet Differential Pressure Transmitters, ± 0.25% Accuracy, 4-20 mA
Dwyer Series 645 wet/wet differential pressure transmitter for liquids and gases: ±0.25% accuracy, 0–1 to 0–100 psid, 4-20 mA, optional 3-valve manifold.
Built to order to your specification and supplied by Ronsor Engineering · +65 6779 2818 · Not sure it's the right one? Try the Product Finder
Model / series: 645
The Series 645 measures differential pressure with liquid or gas on both ports, for example across pumps, filters, strainers, chillers and coils. Its capacitance sensor responds quickly, and an optional 3-valve manifold makes isolation and zeroing simple.
Key specifications
- Ranges: 0–1 to 0–100 psid
- Accuracy: ±0.25% of full scale
- Output: 4-20 mA, 2-wire, 11-30 VDC; response 30 to 50 ms
- Wetted parts: 17-4 PH and 300-series stainless steel, fluoroelastomer and silicone seals
- Operating temperature: up to 80 °C
- Housing: NEMA 4X (IP56); 1/4 in female NPT; optional brass 3-valve manifold
Where it’s used
Our application pages place it on water purification (UPW). It also suits pumps, strainers and coils in chilled and hot water systems.
Ordering
Built to order. Tell us the differential range, the static pressure and whether you need the 3-valve manifold, and we’ll confirm the model code and lead time.
