ONICON Incorporated’s F-3500 series insertion electromagnetic flowmeters are suitable for measuring electrically conductive liquids in a wide variety of applications.
Each F-3500 provides a single analog output for flow rate, a high-resolution frequency output to drive peripheral devices, scalable pulse output for totalization, and an empty pipe alarm signal. Two versions of the F-3500 are now available.
The standard configuration F-3500 is suitable for pipe sizes ranging from 3” to 72” in diameter. The small pipe configuration F-3500 is suitable for pipes ranging in size from 1¼” to 2½” in diameter. Optional remote displays and BTU measurement systems are also available for both versions.
The FB-3500 Electromagnetic Flow Meter is available for bi-directional flow applications. It provides an analog output for flow rate, a contact closure output to indicate flow direction and separate pulse outputs to totalize forward and reverse flow.
FEATURES
Simple Installation and Commissioning
Factory programmed and ready for use upon delivery.
Exceptional Performance & Value
Cost-eff ective insertion style design provides accuracy and reliability normally only found in more expensive full bore devices.
Excellent Long Term Reliability
Low maintenance, no-moving-parts fl ow sensing technology works well in diffi cult flow measurement applications such as open loop condenser water flow.
Highly Accurate Over a Wide Flow Range
Highly effi cient sensor design and continuous auto-zero function improve accuracy and sensitivity, particularly at low fl ow rates.
Simplifi ed Hot Tap Insertion Design
Standard on every insertion fl ow meter, this feature allows for insertion and removal by hand without a system shutdown.
Ideal Solution for Retrofits
The innovative hot tap adapter design allows for wet tapping pipes without interrupting fl ow
Application
- Accurate, reliable flow measurement for HVAC applications
- Ideal for monitoring open-loop condenser water flow
- Hot tap design simplifies domestic water retrofit installations
- The cost-effective way to monitor flow in larger pipe sizes
- Suitable for use in water and water/glycol systems
Typical Applications
The F-3500 is ideal for chilled water, hot water, domestic water, condenser water and municipal water applications.
Specification
| Accuracy | ±1.0% of reading from 2 – 20 ft/s | |
| ± 0.02 ft/s below 2 ft/s | ||
| Flow Range | 0.1 ft/s to 20 ft/s (200:1 turndown) | |
| Sensor Method | Electromagnetic sensor (no moving parts) | |
| Pipe Size Range | Standard Configuration: | 3- 72” nominal diameter |
| Small Pipe Configuration: | 1¼ – 2½” nominal diameter | |
| Input Power | 20 – 28 VDC, 250 mA at 24 VDC | |
| 20 – 28 VAC, 60 Hz, 6 VA | ||
| Temperature Range | 15°F to 250°F | |
| Ambient Temperature Range | -20°F to 150°F | |
| Operating Pressure | 400 psi maximum | |
| Pressure Drop | Standard Configuration: | 0.1 psi at 12 ft/s in 3” pipe, decreasing as line size increases |
| Small Pipe Configuration: | 0.33 psi at 8 ft/s in 1.25” pipe, decreasing as the line size increases | |
| Output Signal Provided | Analog Output (Isolated) | Selectable: 4-20 mA, 0-10 V or 0-5 V |
| Frequency Output | 0-15 V peak pulse, 0-500 Hz | |
| Scalable Pulse Output | Isolated solid-state dry contact Contact rating: 50 VDC, 100 mA maximum Pulse duration: 0.5, 1, 2 or 6 second |
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| Material | Wetted metal components: | 316 Stainless Steel |
| Sensor head: | XAREC | |
| Optional: | NSF/ANSI 61/372 version | |
| Electronics Enclosure | Weathertight NEMA 4 aluminum enclosure | |
| Electrical Connections | 10’ of PVC jacketed cable with ½” NPT conduit connection Dedicated earth wire required 4-wire minimum for power and analog output Additional wires required for pulse, frequency and alarm outputs |
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Ordering Information
Meter Model Number Coding= F-35AA–BB–CC–DEFG(-SPC)
F-35
AA = Insertion Electromagnetic Flow Meter
- 00 = Insertion electromagnetic flowmeter
BB = Outputs
- 11 = Frequency, isolated analog, scaled pulse and alarm (dry contacts)
- 12 = Frequency, isolated analog, bi-directional, scaled pulse and alarm (dry contacts)*
CC = Pipe Size Range and Meter Length
- A1 = 1.25 – 2.5” (F-3500 Small Pipe)
- C3 = 3.0 – 10.0”
- D4 = 3.0 – 16.0”
- E5 = 3.0 – 22.0”
- F6 = 3.0 – 72”
D = Process Connection
- 1 = 1” NPT adapter. ⅜” stem
E = Wetted Material
- 1 = 316 SS, XAREC, Viton, Temp < 150°F
- 2 = 316 SS, XAREC, FKM, Temp ≤ 250°F
- 3 = 316 SS, XAREC, EPDM, NSF rated for domestic water
F = Electronics Enclosure
- 1 = NEMA 4 weathertight enclosure
G = Wiring Connection
- 1 = 10’ PVC jacketed cable, pigtail with ½” conduit adapter
SPC = Special Configuration
*For 3” and larger pipes
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