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Riels Instruments
RIV150 Flow switch

RIV150 Flow switch

Product catalog summary

Overview: The RIV150 Flow Switch by Riels Instruments is a compact paddle flow switch with an adjustable set point. It is designed to actuate a contact when a specific flow rate is reached, using a magnet fixed to the paddle. The switch head is replaceable without removing the flow switch from the pipe, and the switch point can be adjusted externally even when powered.

Key Features:

Hermetic separation of mechanical and electrical components.
Optional mounting positions and low pressure loss.
Adjustable set point with threaded connection and micro switch.

Technical Specifications:

Nominal width: DN 10 to 50.
Process connection: Female thread G3/8 to G1.
Switching range: 4 to 93 l/min, up to 150 l/min.
Pressure resistance: PN 25 bar.
Temperature range: Medium -20 to +110°C, Ambient -20 to +70°C.
Media: Water, with options for oils, gases, and aggressive media.
Electrical connection: Plug DIN 43650-A / ISO 4400, with optional round plug connector M12x1, 4-pole.
Switching voltage: Max 250 V AC, Switching current: Max 5 A.
Ingress protection: IP 65.

Handling and Operation:

Include a straight calming section of 5 x DN in inlet and outlet.
Use an open-ended spanner when tightening the union nut.
Install a filter if media are dirty.
Ensure voltage, current, and power values are not exceeded.
Connect a load in series when switched on.

Adjustment: Adjust the switch by opening the slider and using the adjustment screw. Turn clockwise for a lower switching point and anticlockwise for a higher point. Each revolution corresponds to 1 l/min adjustment.

Options:

Connection for round plug-in connector.
Signal lamp options in the plug.
Gold contact for specific voltage and current.
Protective bellows and special switching ranges for oil or gas.

Materials: Medium-contact materials include brass and stainless steel constructions with various coatings and seals. Non-medium materials include ABS, PA, and NBR.

Installation: Standard installation is horizontal inwards flow, with other positions possible but affecting the switching point and range.

Catalog excerpts

FLOW SWITCH FLOW CONTROLS Compact paddle flow switches Compact paddle flow switches with adjustable set point. When the adjusted flow rate is reached, a magnet, fixed to the paddle, actuates the contact externally located in the switch head. The switch head is a separate component and can be replaced without removing the flow switch from the pipe. The switch point is externally adjustable also in electrical powered condition. The electrical connection is made via DIN 43650 plug with PG9 cable gland. Technical data Stainless steel Tutti i dati ed i contenuti di questa scheda sono di proprietà esclusiva di Riels Instruments - Hermetic separation of mechanical and electrical component - Optional mounting position - Low pressure loss - Adjustable set point - Threaded connection - Micro switch - Low pressure loss Qmax. recom. l/min H2O Switching range Details in the table correspond to horizontal inwards flow with decreasing flow rate

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Technical data Technical data micro switch Nominal width Process connection female thread G3/8..G 1 (further process connections available on request) Materials medium-contact Brass construction: CW617N nickelled, CW614N nickelled, 1.4310, 1.4301, hard ferrite, NBR 4..93 l/min to 150 l/min (for details see table "Ranges) ±15 % of full scale value Installation location Pressure resistance Standard: horizontal inwards flow; switching head not recommended underneath; other installation positions are possible; the installation position affects the switching point and range. Medium temperature Ambient...

Open the catalog to page 2

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