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Flow Switch FH12B02-M12 ideal for medium flows of water - 1/2"G

Name: FH12B02-M12
Brand: Eicos
Price: 203.28 EUR
Availability: InStock

Eicos flow switch FH12B02-M12, ideal for medium liquid flows

1 pc.

168.00 € pc.

In stock

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ADJUSTABLE IN WATER @ 25°C (LPM)
CONTACT		min.	50%*
	ON	0.8	5.0
	OFF	0.5	3.5

ADJUSTABLE IN OIL 68cSt @ 40°C (LPM)
CONTACT		For application in oil, recommended model: FH12B04-M12 or FH12B06-M12
	ON
	OFF

*Half-scale reference.

Overview

Description

The fluid flow causes the displacement of magnetic piston and closes the electrical contact of sensor (reed switch).

The Eicos flow switch FH12B02-M12 of 1/2"G port is ideal for medium flows of water. The sensor has an operation range that allows to adjust the ideal flow of liquid to be detected in application.

The sensor works Normally Open (NO), with ON signal when the flow (liters per minute) is higher that the sensitivity adjusted in the sensor and OFF signal when the flow decreases below the set point.

Output connection in male M12 plug (not included with sensor).

For oil applications, see the model FH12B04-M12 and FH12B06-M12.

Liquids with magnetic particles will cause deposition/magnetic sedimentation and it will prejudice the operation of the sensor. Use magnetic filter before the sensor.

Liquids with encrustation particles and/or solids require tests.

Technical specifications

Body	PPA - Polyphthalamide
Internal clearance	114mm²
Maximum operation pressure	25bar
Operating temperature range	0ºC to 100ºC \| 140ºC @1h
Inlet/outlet port	G 1/2" female (BSP - Parallel)
Spring	AISI 302 stainless steel
Sealing	NBR (nitrilic rubber) O'Ring
Output connection	M12 male, 2 pins (A-code)
Enclosure rating	IP66
Electrical contact	Reed Switch 20W/VA
Warranty	2 years

Switching Voltages

Operating Voltage	Max. switching power	Max. switching current
110Vac	20VA	0.2A
220Vac	20VA	0.1A
5Vdc	2.5W	0.5A
12Vdc	5W	0.5A
24Vdc	10W	0.5A

24Vac: Use with Schneider relay coupler model RSLZVA1 or equivalent.
Relay coupler (110Vac-220Vac): Use 4K7 10W resistor in series.

Mounting

Beware of EXCESSIVE force to which the sensor will be submitted in its installation.

FLOW

Dimensions (mm) and weight

Sensitivity adjustment 200g Scale Inlet fittin Outlet fittin dimensões

Sealing

O'Ring (NBR) for sealing
Parker code 2-116
(included) vedação

Typical connection to contactor and electrical connection

AUXILIARY CONTACTOR (mini contactor)
Check the distance:

Direct connection
to the sensor Use 22R 5W
resistor in series Use
24Vdc voltage Distância ligação

Snubber
Filter Esquema ligação contator

Installing the snubber filter extends the lifespan of the sensor’s electrical contact.

Never connect the sensor directly to a motor, pump, lamp or any other load over 20W.

Always use a contactor or relay.

M12 male connector 2 pins M12 female connector Flow Switch 1-BR 3-BL Esquema Plug M12

Switch	NO - SPST
Output	Contact ON/OFF
Enclosure rating	IP66

Maintenance

Open the plug, remove the spring and clean using a nylon brush if there is encrustation;
Mount the sensor again as illustrated bellow:

Plug O'Ring Spring Piston Allen Wrench 12mm Scale Brush M12 conector Manutenção

Troubleshooting

DIAGNOSIS	ACTION
1) The electrical contact keep on closed WITHOUT flow.	Check if there si overload; Test with an ohmmeter; Open the plug and check if the piston is not blocked.
2) There is flow and the electrical contact remains always open.	Adjust the sensitivity; Check the electrical contact with an ohmmeter; Possible overload that damaged the electrical contact.