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   Model 2500
Digital Flow Transmitters		 Flow Meters & Instrumentation
Model 2500
Features
4-20 mA Output Signal - Can be transmitted over 300 ft without conditioning.
Point-of-Use Display - Display of flow rate and totalized flow is standard.
Wide Rangeability - Flow velocity range of 0.5 to 33 ft/sec, measures flow in either direction.
High Reliability - Utilizing an integral Hall-effect flow sensor with unique 5-bladed rotor.
Adjustable Display - The viewing angle for display can be adjusted to the ideal viewing angle.
Description

The FloSite Model 2500 Flow Transmitter provides a 4-20 milliamp output signal proportional to measured flow. The flow transmitter is typically used in water treatment applications for flow-pacing control of a chemical dosing pump or to control an actuated valve.

The Model 2500 Transmitter consists of an integral flow sensor and local display of flow rate and accumulated flow. The flow sensor is a Hall-effect type, available in a choice of PVC, polypropylene, or PVDF. The sensor utilizes a unique
5-bladed low-drag rotor which minimizes the chance of fouling.

The digital display of flow or total flow is selectable through a 3-pushbutton keypad. Calibration of the display to the application requirements (as well as the 4-20 mA output signal) is easily done through this front keypad.

Sensor electronics are epoxy-encapsulated and the view-adjustable display is housed in a corrosion resistant NEMA 4X enclosure. Output signal can be transmitted up to 3300 ft. without conditioning.
Rugged 3-pole electrical connection on rear of enclowure
Technical Data
Type: Insertion paddlewheel flow sensor (Hall-effect type) with integral display
Flow Velocity Range: 0.5 to 33 ft/sec (0.15 to 10 m/sec), flow measured in either direction
Measuring Range
Pipe Size Range: 1/2" to 8"
Output: 4-20 mA signal proportional to flow, maximum loop resistance <700 ohms 
Output Signal Transmission: Up to 3300 ft (1000 m)
Accuracy: ±1 % of indicated flow over the full calibrated range
Repeatability: ±0.5 % over calibrated range 
Linearity: ±1 % over calibrated range
Viscosity Range: 0.5 to 20 centistokes
Maximum Percent Solids: 10 % (with particulate size not to exceed 0.5 mm length of cross-section)
Power Requirement: Any power supply from 12 to 24 V DC
Display Type: 6-digit LCD for flow rate or totalized flow (user-selectable)
Volumetric Units: Flow rate in GPM, total flow in gallons
Enclosure Rating: NEMA 4X (IP65) with cover closed
Operating Temperature of Electronics: 32 to 140F (0 to 60C)
Sensor Pressure and Temperature Rating: See chart on pg. 23

Materials:

 
  • Enclosure: ABS
  • Flow Sensor Body: PVC, PPL, or PVDF
  • Rotor: 5-bladed E-CTFE (Halar) with magnet inserts 
  • Rotor Shaft: Ceramic
  • Rotor Bearings: Ceramic
  • O-Rings: EPDM standard with PVC or PPL sensors (Viton® optional), Viton® standard with PVDF sensor
    •  Required Installation Fittings: 
    T-fittings in PVC (1/2" to 1-1/4"), Pipe saddles in PVC (1-1/2" to 8")

    Dimensions
    .
    Flow-Paced Liquid Chemical Addition in a Cooling Water Recirculation System
    For de-sliming and preventing fouling of cooling water makeup lines, a chemical dosing pump is typically used to dispense a biocide. A FloSite 2500 Flow Transmitter is installed in the makeup waterline and provides a 4-20 mA output to the dosing pump's external stroke frequency control in proportion to flow.
    Flow-Paced Liquid Chemical Addition in a Cooling Water Recirculation System
    Viton® is a registered trademark of DuPont Dow Elastomers.
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