Product Overview
155421BSPP is a RFO type RotorFlow sensor. The paddlewheel design combines high visibility rotors with solid-state electronics that are packaged into compact, panel mounting housings. This provides accurate flow rate output with integral visual confirmation, all with an unprecedented price/performance ratio. Typical applications are water purification/dispensing systems, chemical metering equipment, lasers and welders, water injection systems, semiconductor processing equipment, chillers and heat exchangers.
- Flow range from 0.5 to 5GPM standard range, 0.1 to 1GPM low range
- Accuracy is ±7.0% standard range, ±7.0% low range
- 0.25" NPT port size
- Polypropylene body material
- Operating pressure range from 100PSIG (6.9bar) at 70°F (21°C), 40PSI (2.8bar) at 180°F (82°C)
- Operating temperature range from -20°F to 180°F (-29°C to 82°C)
- Current consumption is 8mA, no load
- 70mA max current source output
- Frequency output range from 15Hz (low flow) to 225Hz (high flow)
Product details
| Sensor Type |
Electronic Flow Sensor |
| Flow Rate Max |
20l/min |
| Operating Pressure Max |
7bar |
| Supply Voltage Max |
24VDC |
| Sensor Output Type |
Analogue - 4.5VDC to 24VDC |
| Process Connection Size |
1/4" |
| Pipe Size |
- |
| Operating Temperature Min |
-20°F |
| Product Range |
RotorFlow RFO Series |
| Flow Rate Min |
2l/min |
| Operating Pressure Min |
- |
| Supply Voltage Min |
4.5VDC |
| Accuracy |
± 7% |
| Media Type |
Liquid |
| Process Connection Type |
BSPP |
| Sensor Mounting |
Panel Mount |
| Operating Temperature Max |
180°F |
| SVHC |
No SVHC (25-Jun-2025) |
Other details
| Brand |
GEMS SENSORS |
| Part Number |
155421BSPP |
| Quantity |
Each |
| Technical Data Sheet (121.26KB) EN |
View or download |
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