RAY FS WP MID
MECHANICAL FLOW SENSOR
Application
RAY FS WP is a Woltman volume measuring device with a built-in pulse transmitter to measure heat for billing hot water consumption (max. 120°C). Its helix axis is parallel to the pipe ensuring low resistance to flowing and limited pressure loss.
Features
- MI004 approval in class 2 with dynamic range 10:1 (qp:qi)
- Complete range from DN50 qp 15 m3/h to DN200 qp 200 m3/h
- Remote transmission of quantities of flow (3 m cable), compatible with calculators with pulse input
- Installation in any position
- Register can be rotated as required for easier reading
- Very low pressure loss
- Encapsulated and waterproof meter
- As a safeguard against magnetic influences, a sealable anti magnetic screen is fitted on the meter
- Temperature range: 10°C to 120°C
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General
Application Heating Mounting position Any position Medium temperature range °C 10 ... 120 Ambient temperature °C 5 ... 55 Ambient class E1 + M1 Nominal pressure PN bar 161 Protection class IP 54 Approval MID (DE-15-MI004-PTB004) 1 special version on request -
Technical data
Nominal diameter DN mm 50 65 80 100 125 150 200 Nominal flow rate qp m3/h 15 25 32 50 80 200 200 Overload flow rate (short term) m3/h 60 60 90 180 250 400 500 Maximum flow rate qs m3/h 30 30 45 100 150 300 300 Minimum flow rate qi m3/h 1.5 2.5 3.2 5 8 20 20 Starting flow rate l/h 130 130 400 400 600 1,500 2,000 Pressure loss at qp Δp bar 0.02 0.02 0.01 0.03 0.03 0.05 0.002 Flow resistance coefficient Zeta 0.9 0.9 0.65 1.9 1.8 1 0.13 Pulse value reed switch 1 l/pulse 100 100 100 100 100 1,000 1,000 Dynamic range 2 qp / qi 10:1 10:1 10:1 10:1 10:1 10:1 10:1 1 other pulse values on request
2 other qp / qi on request -
Display range
Nominal diameter DN mm 50 65 80 100 125 150 200 0.5 l ... 999,999 m³ • • • • • 5.0 l ... 9,999,999 m³ • • -
Dimensions
Nominal diameter DN mm 50 65 80 100 125 150 200 Overall length L mm 200 200 225 250 250 300 350 Flange diameter D mm 165 185 200 220 250 285 240 Hole circle diameter K mm 125 145 160 180 210 240 295 Number of screwholes pcs 4 4 8 8 8 8 8 / 12 Screwhole diameter D1 mm 18 18 18 18 18 22 22 Height H mm 75 82.5 94 110 125 135 163 Height (without counter extension) H1 mm 141 141 141 200 200 244 244 Height (with counter extension) H1 mm 182 182 182 240 240 284 284 Diameter ØB mm 150 150 150 220 250 285 340 Weight kg 11.1 11.6 12.5 19.8 22.4 39 49 -
Pressure loss graph / Typical error graph
Pressure loss graph
Typical error graph
