The Dwyer SERIES HF In-Line Flow Monitors are ruggedly constructed and ideal for direct measurement for a range of compatible gases, oil or water-based liquids. This Series is designed based on a floating orifice disk and variable area flow measurement. Flowing media forces linear motion of the orifice disk and a ring-shaped magnet which ride on a tapered centre shaft. The transfer magnet drives a clearly visible magnet follower located outside the flow tube, and a ring on the magnet follower indicates flow rate on the direct reading scale.
- Setting pressure relief valves
- Fluid handling equipment
- Detecting low-flow rates for lubricating liquids
- Pulp and paper
- Industrial maintenance
- Fluid power
- Heating loop flow
Service : Compatible gases or liquids.
Wetted Materials : HFA: Aluminum casing, Buna-N seals, PTFE coated Alnico magnet, SS disk; HFB: Brass casing, Buna-N seals, PTFE coated Alnico magnet, SS disk; HFS: 303 SS casing, FKM seals with PTFE backup, PTFE coated Alnico magnet, SS disk.
Maximum Viscosity : 500 SSU.
Temperature Limits : 240°F (116°C).
Pressure Limits : HFA, HFB, HFL and HFH skus: 600 psig (41 bar) for air and gas, 3500 psig (241 bar) for liquids;HFS Model: 1000 psig (70 bar) for air and gas, 6000 psig (413 bar) for liquids.
Accuracy : ±4% FS over entire range; ±2.5% over center third of the measuring range.
Repeatability : ±1% of FS.
Shipping Weight : 1/4″ to 1/2″ female NPT skus; 2 lb (0.9 kg);
3/4″ to 1″ female NPT skus: 3.5 lb (1.59 kg); 1-1/2″ female NPT skus: 11 lb (5 kg);2″ female NPT skus: 13.5 lb (6.12 kg).