STS FM170 Hygienic Flow Sensor
Hygienic flow sensor for food/process applications, nominal DN3–DN100, PN6–PN40 pressure ratings and −20 to +150°C process temperature (model-dependent), accuracy to 0.2% according to STS model catalog.
Official technical evidence
STS FM170 original product documentation · STS model portfolio.
Approval scope: Rated pressure, process materials and any hazardous-area certificates require the manufacturer’s precise ordered assembly. This generic listing is not a certified installation drawing.
FM170 hygienic flow selection
Confirm hygienic fitting type, food/process wetted materials, cleanability and allowable cleaning-cycle temperature in the exact FM170 configuration. DN3–DN100, PN6–PN40 and 150°C represent the maker’s variant envelope rather than interchangeable options. Verify process sensor and matching electronics for the intended conductive liquid. The related FM700 image must not be mistaken for a certified FM170 installation example.
FM170 hygienic magnetic flow sensor — clean process and paired converter
| Selection factor | Source-grounded product detail | Installed-system consequence |
|---|---|---|
| Measuring principle | Electromagnetic flow measurement of conductive liquid; non-mechanical wetted measuring tube | Hygienic geometry helps cleaning but no generic CIP/SIP qualification is asserted without a gasket/certificate drawing. |
| Actual maker sizes | DN3–DN100 offered, pressure rating PN6–PN40 | Select port geometry, hygienic gasket, bore and pressure class for a purchase order. |
| Model catalogue accuracy | Up to ±0.2% in STS original model overview | Actual as-built accuracy depends on process velocity, conductive liquid and selected transmitter, not just a sensor tube. |
| Process temperature | -20…+150°C published family limit | The FM300 electronics are separately limited to -20…+60°C ambient. Keep the converter away from hot service. |
| Qualifying details | FM300 conversion electronics explicitly list FM170 all diameters as compatible | Get actual paired converter, flange/clamp/connection, wetted material and process approval from STS. |
Variant and approval conditions
The existing site image shows STS FM700, not the exact FM170 probe. That picture should not serve as proof of clamp/end connection or CIP materials. Preserve the existing attribution and request rights-approved exact model imagery for final QA.
Original STS sources: STS flow family FM170 catalogue specifications · STS FM300 compatible tube list February 2026.