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The S6022 flow switch responds to low fluid flow rates in applications with a pipe size below 1" to 3" in diameter. It is a Single-Pole, Double-Throw (SPDT) flow switch that is used in liquid lines carrying water, ethylene glycol, or other liquids that are not classified as non-hazardous. It can be wired to energize one device and energize another device powered from the same source when liquid flow either exceeds or falls below the set flow rate.
Rated voltage V Rated Current A | Power COS ø | 125VAC | 250V AC | |
No induced load current | 1 | 15 | 15 | |
Induced load | Full load current | 0.75 | 3.5 | 2.5 |
Current | Instantaneous current | 0.45 | 21 | 15 |
Figure1: Technological Parameter 1
Valve Size | Connector | Max Pressure (Mpa) | Protection | Allowable Medium Temp. | Wet. (Kg) | Modulating Range of Flow | ||||
Pipe Size | Min. | Max. | ||||||||
Flow decrease | Flow increase | Flow decrease | Flow increase | |||||||
3″ | 1″-11½ (NPT) | 1.60 | IP65 | -30~120 | 0.6 | 1″ | 2.5 | 4.2 | 8.5 | 8.8 |
2″ | 9.5 | 13.7 | 27 | 29 | ||||||
3″ | 19 | 27.5 | 50 | 53 | ||||||
Figure 2: Technological Parameter 2
When there is sufficient fluid through the pipe, the loop closes up between red and blue contacts.
Figure 3: Switch actions
Mount the switch in a section of pipe where there is a straight run of at least five pipe diameters on each side of the flow switch.
The switch should be mounted so that the terminals or wire leads are easily accessible for wiring.
Screw the flow switch into position so that the flat of the paddle is at a right angle to the flow. The arrow on the side of the case must point in the direction of the flow.
The switch must be mounted in a horizontal pipeline or a vertical pipeline with upward liquid flow. It is not recommended for installation where liquid flow is downwards. When mounted in a vertical pipe with the upward flow the switch trips will operate at a slightly higher flow than shown in Figure 4: “Typical Flow Rates”, due to the effect of gravity on the switch mechanism.
All wiring connections must be made using copper conductors only.
All wiring must be installed in accordance with the National Electric Code and local regulations
GPM (m3/hr) Required to Actuate Switch | |||||||||||||||||||||
Pipe Size （in.） | 1 | 1-1/4 | 1-1/2 | 2 | 2-1/2 | 3 | 4* | 5* | 6* | 8* | |||||||||||
Minimum Adjustment | Flow increasing red→yellow closed** | 4.2 (1.0) | 5.8 (1.3) | 7.5 (1.7) | 13.7 (3.1) | 18.0 (4.1) | 27.5 (6.2) | 65.0 (14.8) 37.0+ (8.4) | 125.0 (28.4) 57.0+ (12.9) | 190.0 (43.1) 74.0+ (16.8) | 375.0 (85.2) 205.0+ (46.6) | ||||||||||
Flow decreasing red→blue closed** | 2.5 (0.6) | 3.7 (0.8) | 5.0 (1.1) | 9.5 (2.2) | 12.5 (2.8) | 19.0 (4.3) | 50.0 (11.4) 27.0+ (6.1) | 101.0 (22.9) 41.0+ (9.3) | 158.0 (35.9) 54.0+ (12.3) | 320.0 (72.7) 170.0+ (38.6) | |||||||||||
Maximum Adjustment | Flow increasing red→yellow closed** | 8.8 (2.0) | 13.3 (3.0) | 19.2 (4.4) | 29.0 (6.6) | 34.5 (7.8) | 53.0 (12.0) | 128.0 (29.1) 81.0+ (18.4) | 245.0 (55.6) 118.0+ (26.8) | 375.0 (85.2) 144.0 (32.7) | 760.0 (172.6) 415.0+ (94.2) | ||||||||||
Flow decreasing red→blue closed** | 8.5 (1.9) | 12.5 (2.8) | 18.0 (4.1) | 27.0 (6.1) | 32.0 (7.3) | 50.0 (11.4) | 122.0 (27.7) 76.0+ (17.3) | 235 (53.4) 111.0+ (25.2) | 360.0 (81.8) 135.0+ (30.7) | 730.0 (165.8) 400.0+ (90.8) | |||||||||||
* + GPM figures are for a switch with a 6” paddle.
* For 4” and 5” line pipes, the 6” paddle is trimmed to a 4” and 5” length, respectively.
* For switching action, refer to figure 3.
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