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Flow Indicating Switch
Flow Indicating Switch
Armor-Floâ„¢ meters provide even more effective process control input with switching capabilities. Simple electromechanical switches define your process limits. Adjustable switches provide positive indication of flow/no flow conditions and may be positioned to actuate at specific flow rates. The design of the switch is to capture the indicator, preventing movement until the flow rate is once again within the acceptable range. The switches are SPDT glass encapsulated reed type rated at 0.25 amperes at 120V ac (1.5 amperes at 24V dc). This switch is appropriate for use in Class 1, Division 2 areas.
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- Coolant monitoring
- Pump seals
- Chilled water
- Staging air compressors
- Lube oil systems
- Accuracy: ±2% full scale
- Repeatability: ±1% full scale
- Scales: Direct reading
- Resolution: Maximum-30 division/Minimum-15 divisions
- Rangeability: 10 to 1 turndown
- Switch/Type: Hermetically sealed reed switch
- Contact rating: 0.25A @ 120 vac 1.5A @ 24V dc
- Adjustment limits:
20-50% full scale-low limit
50-90% full scale-high limit
30% differential between low and high
- Materials of Construction:
Housing: Aluminum,brass, 70/30 copper/nickel, 316 stainless steel, Hastelloy ® C-22
Shunt: As housing or carbon steel
Window: Tempered glass or polycarbonate
Vane: Cobalt/chromium/nickel alloy or Hastelloy ® C-22 with Teflon ® encapsulated magnet
“O†rings: Buna-n, ethylene propylene, Viton ® , Kalrez ® or Teflon ®
- Piping Connections:
1 ? " to 1" NPT Female
1 1 ? 4 " to 4" NPT male
1 1 ? " to 3" Tri-clamp I
1 1 ? 4 " to 6" Grooved
1 1 ? 4 " to 6" Beveled
- 1 ? " to 6" 150# /300# RF/FF ANSI
Flanges (carbon stl) - 1 ? " to 6" 150# RF ANSI
Flanges (stainless stl) - 1 ? " to 6" 150# RF ANSI
Flanges (aluminum) - 1 ? " to 6" 150# FF ANSI
Flanges (brass) - 15 to 25 mm DIN 2999/BS21/ISO R7
Female threaded - 15 to 150 mm DIN PN 10
Flanges (316 stainless stl & carbon stl) - Pressure Limits:
1 Housing (aluminum)
0, 1 or 5 Shunt-200 psig (13.8 bar)
2 Housing (brass)
0 Shunt-400 psig (27.6 bar)
2 or 5 Shunt-200 psig (13.8 bar)
6 Housing (316 stainless stl)
0 Shunt-400 psig (27.6 bar)
5 or 6 Shunt-200 psig (13.8 bar)
7 or 8 Shunt-400 psig (27.6 bar)
8 Housing (high pressure 316 stainless stl)
0 Shunt-1000 psig (69 bar)
9 Housing (Hastelloy ® C-22)
0 Shunt-400 psig (27.6 bar) - Temperature Limits:
-23 to 85°C (-10 to 185°F)with Teflon ® o-ring at constant temperature conditions
-23 to 121°C (-10 to 250°F)with buna-n o-ring
-23 to 204°C (-10 to 400°F)with Viton ® , Kalrez ® or ethylene propylene o-ring
- Instantaneous flow rate measurement.
- Adjustable low and/or high flow limit switches.
- Use in horizontal or vertical piping systems.
- Individually calibrated for fluid and operating conditions.
- User selectable 10:1 turndown flow ranges.
- User selectable units of measure.
- No floats to get stuck, tubes to break or dynamic seals to leak.
- Low pressure loss.