SenTec FST300 electronic flow switch based on the thermal principle, the enclosed probe contains two resistors, one of which is heated as the detection resistance and the other is not heated as the reference resistance is taken away, the resistance value is changed, and the difference between the two resistances is used as the basis for judging the flow rates.
FST300 Gas-liquid dual type electronic flow switch is used for pneumatic and hydraulic systems, can be used for circulating water, cutting fluid and lubricating oil flow detection and pump idling protection.
Parameter :
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ITEMS |
PARAMETER |
ITEMS |
PARAMETER |
| Set the range | 1…150cm/s(water)，3…300cm/s(oil)，20…2000cm/s(air) | Response time | 1-13s, typical values 2s |
| Signal output | PNP, NPN, relay, Normally open+normally closed (SPDT) | Initialization time | 8s |
| Power supply | 24±20%VDC or 230V±15%VAC | Electric protection | Invert, short circuit, overload protection |
| Turn on the current | Max. 400mA(PNP or NPN), Max. 4A(Relay) | Protection grade | IP67 |
| No-load current | Max. 80mA | Medium temperature | -20 ° C ~ 80 ° C |
| Flow indicator | LED row (6) | Environment temperature | -20 ° C ~ 80 ° C |
| Set way | Potentiometer setting | Storage temperature | -20 ° C ~ 100 ° C |
| Pressure range | 100bar | Connection mode | M12 plug-in/direction attachment line |
| Temperature gradient | ≤4 ° C/S | Material | Stainless steel(Probe), PBT(Shell) |
| Weight | 0.4KG |