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RCM Flow Meter Transmitters
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Our 4-20 mA Transmitters (option W2 and W3) are now CSA Approved for Hazardous Locations Ex ia IIC: Class I, Zone 0 |
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| 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).
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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). |
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2 WIRE DIGITAL DISPLAY - RW3
A loop powered 4-20mA two wire transmitter displays 4 1/2 digits for flow rate and 8 digits for totalization. Open collector output for remote totalizer. Password protection and 16 bit A/D resolution. Includes square root extraction at the display.
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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). |
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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. |
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| Transmitters: |
| Option |
4-wire
(option W, Y, Z) |
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2-wire
(option W2, W3) |
| Accuracy Horizontal
Flow |
±3% F.S. above
30% F.S. |
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±3% F.S. above
15% F.S. |
| Accuracy Vertical
Flow |
±5% F.S. above
30% F.S. |
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±3% F.S. above
15% F.S. |
| Ambient temp
limit |
120°F | 50°C |
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120°F | 50°C |
| Current output |
4-20 mA into 800 ohms
max. (linear with flow) |
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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 |
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n/a |
| Frequency output
(option Y) |
1000 Hz F.S. 5 V peak,
270 us on time |
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CSA Approved Intrinsically Safe Entity |
| Electrical rating |
General Purpose |
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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 |
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24 Vdc, 25 mA |
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