Flow relay
The flow relay is energized when flow is present and during the power-on delay.
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Copy| Product Name | ifm SN0150 Flow Sensor Control Monitor |
| Item NO. | SN0150 |
| Weight | 0.2525 kg = 0.5567 lb = 8.9067 oz |
| Category | OTHER PRODUCTS |
| Creation Time | 2026-08-17 |
Single-channel control monitor for evaluating flow, temperature and sensor-wire conditions in liquid or gas applications.
ifm SN0150 is a single-channel control monitor for flow sensors. It evaluates flow, temperature and wire status and provides relay switching functions with visual status indication.
The unit operates from an AC supply, provides an adjustable 10-80 second power-on delay and supports liquid or gas selection through the documented terminal bridge. Eleven LEDs provide operating and status information.
| Brand | ifm |
|---|---|
| Article number | SN0150 |
| Product type | Control monitor for flow sensors |
| Evaluation channels | 1 |
| Nominal operating range | 90-240 V AC |
| Supply tolerance | -5% / +10% |
| Supply frequency | 47-63 Hz |
| Maximum power consumption | 4 VA |
| Protection class | Class II |
| Power-on delay | 10-80 s, adjustable with fixed resistors at terminals 22-23 |
| Relay contact rating | 4 A at 250 V AC or 30 V DC |
| Response time | Less than 3 s |
| Temperature switching range | 0-80 °C |
|---|---|
| Temperature repeatability | 4 K |
| Ambient temperature | -20 to +60 °C |
| Protection rating | IP20 |
| Housing material | PBT |
| Mounting | TH 35 rail according to EN 60715 |
| Connection | COMBICON terminals |
| Required external fuse | Maximum 5 A, fast acting |
| Dimensions (H x W x D) | 100 x 25 x 103.5 mm |
| Weight | 252.5 g |
| LED indicators | 11 |
| MTTF | 168 years |
The flow relay is energized when flow is present and during the power-on delay.
The temperature relay is energized when the configured temperature limit is exceeded.
The wire-break relay is de-energized if a wire break or short circuit is detected.

SN0150 is an IP20 control-monitor device for protected installation. Apply the official terminal assignment and supply-isolation instructions before energizing the unit.
It evaluates flow, temperature and sensor-wire conditions through one monitoring channel.
The nominal operating range is 90-240 V AC at 47-63 Hz, with a -5% / +10% tolerance.
The official data lists 4 A at 250 V AC or 30 V DC.
The delivery setting is for liquids; gas operation is selected by bridging terminals 23 and 24.
It mounts on a TH 35 rail according to EN 60715 and requires protected IP20 installation.
| Selection A | Selection B | Selection C |
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| Yaskawa SGD7F-2R8F00AY0829A | Lenze 82000000011400 | Moxa NPort IA-5150I-T |
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