Série C15Détecteur de débit en ligne

Détecteur de débit polyvalent à actionnement magnétique, normalement ouvert, dans un corps en laiton monobloc. Se ferme en réponse au débit. Idéal pour les applications en liquide propre, y compris la surpression et la commande de pompes ou de ventilateurs via un relais, un contacteur ou un API — en eau douce, eau de mer et diesel.

Série C15

Caractéristiques

  • Corps laiton monobloc
  • Montage toutes positions
  • Modèle adapté au diesel disponible
  • Contacts d’ampoule reed secs
  • Détecte les très faibles débits : enclenchement à 0,15 L/min (à la verticale, retenue non magnétique)
  • Conception à faible perte de charge
  • Entièrement entretenable
  • Étanche aux intempéries

La série C15 se compose d’un module de commutation électrique scellé chevauchant un corps métallique monobloc. Le module électrique autonome se retire facilement sans démontage de la tuyauterie et peut être inversé ou tourné indépendamment du corps. À l’intérieur du corps métallique, un piston libre en suspension magnétique actionne l’interrupteur dès le début du débit. Le C15 est fourni avec des contacts d’ampoule reed secs pour la commande par relais ou API. Tolère des pressions statiques ou dynamiques jusqu’à 100 bar (1450 psi) avec un facteur de sécurité de 4:1.

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Commande — Modèles disponibles

RéférenceDescription
C15-BDry reed switch S.P.S.T. N.O. — 50 W/VA, 250 VAC / 200 VDC, 1.5 A max. Suitable for PLC, telemetry and logic circuits.
C15-B-DDiesel-suited dry reed switch S.P.S.T. N.O. — 50 W/VA, 250 VAC / 200 VDC, 1.5 A max. Suitable for PLC, telemetry and logic circuits.

Limites de fonctionnement

Switching point on rising flow (horizontal or vertical, magnetic retainer fitted)0.35 L/min (water at ambient)
Switching point on falling flow (horizontal or vertical, magnetic retainer fitted)0.30 L/min (water at ambient)
Switching point on rising flow (vertical, flow upward, non-magnetic retainer fitted)0.15 L/min (water at ambient)
Switching point on falling flow (vertical, flow upward, non-magnetic retainer fitted)0.10 L/min (water at ambient)
Maximum recommended flow rate through switch30 L/min
Maximum operating pressure (static or dynamic)100 bar / 1450 psi
Operating temperature rangeHot or cold liquids from −20 °C up to 90 °C; can be steam-sterilised at 100 °C for short periods
Ingress protection ratingIP56

Données électriques

Module typeDry-contact reed switch (electrical module B)
Contact configurationS.P.S.T. normally open
Switched power (maximum)50 W/VA
Switched voltage (maximum)250 VAC / 200 VDC
Switched current, resistive AC RMS (maximum)1.5 A
Inductive loads (power factor 0.4)Not suitable
Typical applicationPLC, telemetry and relay logic circuits
Temperature de-ratingThe C15-B modules do not require de-rating at elevated temperatures

Dimensions

Dimensions Série C15
Multi-view overall dimensions in millimetres — 108 mm body length, 41 mm A/F brass hex, 1/2" BSPT male inlet (15 BSPT), 3/4" BSPT female outlet (20 BSPT), 8.5 mm cable gland.

Switching-Point Sensitivity

Switching point and sensitivity to flow depend on orientation, liquid velocity, viscosity and piston clearance. A non-magnetic piston retainer is supplied. With the switch mounted vertically and flow passing upward, the non-magnetic retainer halves the switch-on flow rate — i.e. makes the switch approximately twice as sensitive. Switching points are for water at ambient temperature; decreasing the fluid viscosity proportionally increases the switch-on flow rate.

Hazardous Areas

The C15-B and C15-B-D are simple apparatus under AS/NZS 60079.11 and may be used in a hazardous area only as part of an intrinsically safe circuit, connected through suitably certified associated apparatus. They are not Ex certified in their own right. The full conditions of use are given in the installation sheet.

Compatible Liquids

Suits many clean liquids, including fresh water, sea water and diesel fuel. Increasing fluid viscosity decreases the flow rate required to actuate the switch. The switch can only be used with liquids free from suspended solids and free from particulates attracted to magnets.

Elevated Temperatures

Suitable for hot or cold liquids up to 90 °C, and systems can be steam sterilised at 100 °C for short periods without damaging the switch. The C15-B reed-switch modules do not require de-rating at elevated temperatures.

Installation

Install in any location in vertical or horizontal pipes; in vertical pipes flow can be upward or downward with very little difference in flow sensitivity. Where possible, fit a union on the inlet and outlet for easy removal for cleaning and servicing. The male threaded end of the switch is the inlet. Make sure no thread tape or other foreign matter enters the switch, and always fit a Y-strainer in the inlet pipe directly before the switch where scale or other material may be present. The electrical module can be removed (undo the 4 self-tapping screws) so the body can be screwed into tight locations, for example the discharge port of a pump.

Check Valves

Many applications benefit from a non-return valve in the pipework directly before the switch. The flow switch is not designed to operate as a one-way valve, and rapid or high pressure flow reversal, such as water hammer, can damage its piston.

Electrical Safety

The C15 Series flow switch is a mains voltage device. All electrical work must be performed by a fully qualified and licensed electrician and conform to AS/NZS (or equivalent) standards and local wiring rules. After installing or servicing, always replace the lid, fully tighten the lid screw and ensure the cable gland is fully tightened. Without its lid the switch is not weather or insect proof and presents a potential shock hazard.

Maintenance

Entièrement entretenable sur site. Le module électrique se retire facilement sans démontage de la tuyauterie (dévisser les 4 vis autotaraudeuses qui assemblent les deux moitiés du module) et peut être tourné ou inversé indépendamment du corps ; l’inversion du module n’inverse pas l’action de l’interrupteur. Remonter avec les 4 vis autotaraudeuses inox, et ne placer ni graisse, ni colle, ni matériau de garnissage entre le module et le corps. Modules de rechange et kits de joints disponibles auprès de Kelco Engineering ou de votre distributeur.

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