Contact RCM Flow Meter Sales Department: 201-419-6121 or sales@nciweb.com


RCM Flow Meter Transmitters

Our 4-20 mA Transmitters (option W2 and W3) are now CSA Approved for Hazardous Locations Ex ia IIC: Class I, Zone 0
Economical single package solution includes sensor and transmitter:
  • Differential Pressure measuring principle avoids problems associated with sticking floats and plugging passages.
  • Solid state strain gauge senses differential pressure directly
  • Low maintenance design with no moving parts.
  • Designed for use with computer control systems or remote readouts
  • Signal is proportional to flow rate squared (r²). (Square root extraction is required in the receiving device.)
  • Intrinsic safety option for Class I Div. I, Groups A,B,C,D; Class II Div 1, Groups E,F,G; EExia IIc T4 (CSA and Cenelec approvals pending).
W2 Option

2 WIRE TRANSMITTER - W2

The W2 option includes a mechanical analog indicator with the solid state strain gauge mounted on top sensing the differential pressure directly and providing a loop powered 4-20mA signal proportional to flow squared (r²).

RW3 Option

2 WIRE DIGITAL DISPLAY - RW3

The New digital display flow meter is a 2 wire loop powered 4-20mA DC indicator that displays a flow rate and total. On-screen engineering units are easily configured. Password protection and 16 bit A/D resolution. A New built in wet/wet differential pressure sensor is protected by an isolated stainless steel diaphragm and provides a 4-20mA DC signal to the display. The enclosure is IP67 / NEMA 4X rated which further enhances this models capability. Available in threaded or flanged connection and bronze or stainless steel construction.

W3 Option

2 WIRE TRANSMITTER - W3

Economical single package solution for monitoring flow to a remote control room. A solid state strain gauge senses the differential pressure directly which provides a loop powered 4-20mA signal proportional to flow squared (r²).

WXYZ Option

4 WIRE TRANSMITTER - W, X, Y, Z

The flow meter is available with either a 4-20mA output (Option W), a 0-1000 Hz frequency (Option Y), set point switching (Option X) and Option Z which combines W, X, & Y for interfacing with controllers, computers and alarms. The output signal is linear.

Transmitters:
Option 4-wire (option W, Y, Z) 2-wire (option W2, W3)
Accuracy Horizontal Flow ±3% F.S. above 30% F.S. ±3% F.S. above 15% F.S.
Accuracy Vertical Flow ±5% F.S. above 30% F.S. ±3% F.S. above 15% F.S.
Ambient temp limit 120°F | 50°C 120°F | 50°C
Current output 4-20 mA into 800 ohms max. (linear with flow) 4-20 mA into 650 ohms max. (350 ohms with option R) (current proportional to flow rate squared)
Contact rating (option X, Z) 3.0 amp @ 24 V, 1.0 amp @ 117 V, 0.5 amp @ 230 V n/a
Frequency output (option Y) 1000 Hz F.S. 5 V peak, 270 us on time

CSA Approved Intrinsically Safe Entity

Electrical rating General Purpose

Ex ia IIC: Class I, Zone 0: Cl. I, Groups A,B,C,D; Cl. II, Groups E,F G. Temp Code T3 at Tamb 50o C

Power input 24 Vdc, 100 mA 24 Vdc, 25 mA
 
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