SKU: E800061
Model P4
Continuous in-line measurement for 4″ process pipelines
4″ Pipeline Sensor for Brix, Total Solids & Density Measurement
Continuous in-line concentration measurement directly in 4″ process pipelines. The sensor measures total solids content — including both dissolved and suspended components — delivering stable, real-time data under high flow conditions without bypass loops or sample extraction.
Designed for high-volume production environments including sugar processing, food & beverage manufacturing, dairy operations, and chemical processing where robust measurement and coating resistance are essential for large-scale process control.
Sugar & Sweeteners
- Multi-effect evaporator feed and discharge lines
- Vacuum pan feed streams
- Syrup transfer between process stages
- Molasses and intermediate product pipelines
Food & Beverage
- High-capacity juice processing lines
- Beverage concentrate production
- Large-scale syrup blending and transfer
- Fruit and vegetable processing streams
Dairy
- Large-volume milk and cream processing
- Whey concentration lines
- Dairy ingredient transfer pipelines
- UHT processing streams
Chemical & Industrial
- High-capacity chemical transfer lines
- Reactor feed and discharge pipelines
- Industrial solution concentration
- Large-scale blending and mixing streams
- Measurement range (Brix / solids):
0-95% Factory configured to specific TS or Density range by customer specification - Accuracy & repeatability:
+/- 0.01 % concentration - Sensitivity:
+/-0.001% concentration - Measuring resolution:
0.01% concentration - Outputs:TS % & Temperature,
4 – 20 mA, Active and Isolated. Max load 750 Ohm. - Process conditions:
- Ph= 3-14
- Temperature=0 – 140 C.
- Pressure: recommended min 1.5 bar to avoid free air
- Sensor body: Aisi 316L.
Flanged process fitting.
Control the process where it flows — inline, in real time.
3-year warranty
A full, industry-leading warranty reflecting confidence in long-term performance.
Stable signal despite coating and buildup
Maintains a stable measurement signal even when product coating or buildup is part of normal operation
Wide Measurement Range
Accurate measurement from low concentrations to high-solids processes — one sensor covers your full production spectrum.
“We needed stable Brix measurement in our evaporator discharge line. The 4” sensor handles high concentrations and coating without signal drift — reliable data for our concentration control throughout the season.”
— Process Engineer, Beet Sugar Factory (Spain)
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Model P4: frequently asked questions
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What is the Inmec Model P4?
The Model P4 is a digital microwave sensor for continuous Brix, total solids and density measurement in 4″ process pipelines. It measures the flowing product directly in the line, without bypass loops or sample extraction.
Where is the Model P4 used?
In sugar production the Model P4 is used in multi-effect evaporator feed and discharge lines, vacuum pan feed streams, syrup transfer between process stages and molasses lines. It is also used in high-capacity juice and beverage concentrate lines, syrup blending, milk, cream and whey concentration lines, and chemical transfer, reactor feed and blending lines.
Does the Model P4 measure suspended solids as well as dissolved solids?
Yes. The Model P4 measures total solids, both dissolved and suspended, across the flowing product. This suits opaque, viscous and coating-prone streams and slurries, where optical sensors that measure only dissolved solids at a prism surface struggle.
Does coating or buildup affect the Model P4 measurement?
No. The digital microwave measurement extends into the product volume, so the signal stays stable when coating or buildup on the sensor surface is part of normal operation.
Which Inmec pipeline sensor size should I choose?
Choose the model that matches the pipe size: the P2 fits 2″ (DN50), the P4 4″ (DN100), the P6 6″ (DN150), the P8 8″ (DN200) and the P10 10″ (DN250) industrial process pipelines, all with a flanged fitting. For sanitary lines of 1.5–3″ (DN40–DN80) with a Tri-Clamp connection, use the Model P-TC, and for tanks and vessels the Model IL. All use the same digital microwave measurement.
How is the Model P4 installed?
The Model P4 installs directly in a 4″ (DN100) pipeline with a flanged process fitting. The pipe must run full, and a process pressure of at least 1.5 bar is recommended to avoid free air at the sensor.
Does the Model P4 need a separate transmitter?
No. All signal processing takes place in the sensor itself. It provides 4–20 mA outputs for total solids and temperature, active and isolated, with a maximum load of 750 Ω, directly to the PLC or DCS.
What are the measurement range and accuracy of the Model P4?
The measurement range is 0–95 % Brix or total solids, factory configured to the customer’s specific total solids or density range. Accuracy and repeatability are ±0.01 % concentration, sensitivity is ±0.001 % and measuring resolution is 0.01 %.
What process conditions does the Model P4 handle?
The Model P4 operates at pH 3–14 and 0–140 °C, with an AISI 316L sensor body. A process pressure of at least 1.5 bar is recommended to avoid free air at the sensor.
What warranty does the Model P4 have?
The Model P4 comes with a 3-year warranty, reflecting its long-term stability in continuous industrial operation.