Electronic water flow detection switch, flow control switch, flow relay

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FES economic electronic flow switch

Product Introduction:

Real time monitoring of liquid flow in the pipeline, providing on off output, and using 6 LEDs to display real-time fluid flow rate status can achieve the following monitoring functions: medium flow, reducing/including flow rate; The medium exists/does not exist; Medium flow/stillness; Monitor the flow rate of fluid in the pipeline, monitor flow interruption, or prevent pump idling It is applied in industries such as petrochemical, power, metalurgy, steel mills, papermaking, food processing, water treatment, battery factories, etc

Product parameters:

Measurement range: water: 0.03-3m/s;

Oil: 0.03-3m/s;

Gas: 2-20 m/s

Withstand voltage: 1.6 M P a

Connection method: Thread G 1/2 ^ ^, G 1/4 ^ ^ ^, other

Switching time: O N: typical ≥ 4 s (1-13 s);

O F F: Typical ≥ 4 s (1-15 s)

Temperature change reaction time: ≤ 12 seconds

Working voltage: D C 2 4 V

Power consumption: 2 W

Output: Relay, N P N/P N P output

Contact capacity: 2 A/220 VAC, 3 A/30VDC

Insulation impedance: 100 M Ω at 100V D C

Number of control points: 1 pair

Contact capacity: 2A/220 VAC, 3A/30VDC

Insulation impedance: 100 M Ω at 100VD C

Probe material: 304 stainless steel

Shell material: PP

Working temperature: -10 ℃ -60 ℃

Environmental conditions: -20~85 ℃, ≤ 85% R H

Protection level: I P 6 7

Product features:

1. Economic and suitable for extended use on equipment

2. Replace the handle type flow switch with sensitive action and long service life

3. It can effectively prevent angle

4. Fully waterproof shell design

5. Suitable for a wide range of pipe diameters and can be adjusted at arbitrilyspot

6. The indicator light directly displays changes in flow rate

Conventional flow switches or flow signals are often used for buffle or piston type, releasing on liquid flow power to push the buffle or piston to move, resulting in high water resistance, large flow loss, poor accuracy, and inability to monitor small flow rates The sealing part is sealed with metal corroded pipes, which has poor pressure resistance and are prone to metal fatigue and cracking

Product packaging and accessories:

Knowledge extension:

What environmental factors should be noted when installing fire flow switches

The use of fire flow switches in engineering sites is very important, but there is a small element of their installation environment and actual usage requirements Today, we will talk about the installation environment of fire flow switches

Pay attention to the following situations during the installation of fire flow switches:

1. Before installing the instrument, it is necessary to ensure that the circulation pipeline has been cleaned to prevent debris such as stones from entering the pipeline It is recommended to install valves on the front and rear pipe sections of the flow meter flow switch for easy maintenance in the future If the battery needs to be replaced, it must be operated by person

2. Due to the significant impact of the installation position of the fire water flow switch and the state of the tested pipeline on the measurement accuracy, a location that meets the following conditions is selected

(1) Straight pipe sections with an upstream side of 10D and a downstream side of 5D or more; If the installation of pipelines accountants flow blocking connectors such as shrink pipes, expansion pipes, and elbows, please choose the appropriate installation location

(2) Within 30D on the upstream side, ensure that there are no factors that disrupt the flow (pumps, valves, origins, etc.)

3. The fire flow switch should be adjusted at a low flow value approximately when leaving the factory In actual use, do not lower the position set by the factory, otherwise it may cause the switch to be unable to return to the ^ ^ no liquid flow ^ ^ position;

4. If it is necessary to increase the flow value, the adjustment screw should be rotated clockwise If you need to lower the flow value after increasing the factory set value, you can rotate the adjustment screw counter clockwise;

5. After adjustment, check if the setting value of the flow switch is not lower than the factory setting value Press the main lever sever times to check if there is a ^ ^ click ^ ^ sound when the main lever returns If not, rotate the adjustment screw clockwise until the lever returns with a ^ ^ click ^ ^ sound

6. Note that the setting review for the sealing paint cannot be adjusted Otherwise, once changed, it will disrupt the control of the flow switch or cause regulation failure and render it unable to work

7. Remember to adjust the flow too high or too low If it is too high, it will not be able to drive the flow sheet and the switch will not be able to operate at low flow rates If it is too low, the switch will be too sensitive and cause misoperation

Fire flow switch

The installation environment of fire flow switches should avoid the following environmental factors as many as possible:

1. Attention should be paid to areas near high temperature environments, heating sources, and direct sunlight exposure;

2. Places with high humidity such as rain or water;

3. After frequently vibrating instruments such as compressors, constant displacement pumps, and oscillating valves, try not to install vortex flow meters, Coriolis flow meters, vortex street flow meters, etc. as many as possible;

4. To avoid exposure of the fire flow switch, corrosion resistant materials should be selected as the instrument case according to the situation;

5. The awareness of exploration proof and flammability safety at the construction site, the use of aircraft enclosures, and the reduction of power supply voltage;

6. Dust pollution can interfere with the reading and accuracy measurement of instrument data, and if necessary, add protective covers to the transmitter of the instrument;

7. Instruments with strong electromagnetic interference can affect their effectiveness, and protective covers should be installed around them to shield against electromagnetic interference;

8. In hash construction environments, it is recommended that the detection instruments and secondary meters (transmitters) of flow meters should not be integrated instruments Previous cross damage