Industrial Valves
Sanitary Pressure Transmitters
output and we will spec the rest.
All Sanitary Pressure Transmitters
27 products
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We Also Source
The products above are what we list online. We supply a good deal more than we list — these families are spec’d to the application, so we quote them rather than publish every permutation. Tell us the line size, end connection, pressure and service and a ValveMan specialist will come back with the exact model, current pricing and availability.
Photos are the manufacturers’ own product images, shown to illustrate what we source. Availability is confirmed at quote.
About Sanitary Pressure Transmitters
A sanitary pressure transmitter does the same job as an industrial one — it converts process pressure into a 4–20 mA, HART or digital signal — but everything on the wetted side is built so the instrument can be cleaned in place and sterilised in place without being removed from the line.
The difference is the process connection. An industrial transmitter uses a threaded port with an internal pressure cavity; product collects in that cavity, it cannot be flushed out by a CIP cycle, and in food, beverage, dairy and pharmaceutical service that cavity is a contamination risk and an audit finding. A sanitary transmitter replaces it with a flush diaphragm welded directly to a hygienic fitting — most often a tri-clamp (Tri-Clover / ISO 2852) ferrule — so the sensing surface is continuous with the pipe wall.
How to spec a sanitary pressure transmitter
Six decisions determine the part number. Have these ready and a quote takes minutes:
- Process connection and size. Tri-clamp is the default; 1-1/2" and 2" ferrules cover most process lines. The ferrule size does not have to match the line size — it has to match the tank or tee fitting you are landing on.
- Pressure range. Gauge, absolute or compound. Tank level applications are often specified in inches of water column rather than psi, because you are reading head pressure, not line pressure.
- Accuracy. Quoted as a percentage of span. General process control is comfortable at 0.25%; batching, custody and validated pharmaceutical steps usually call for 0.2% or better of adjusted span.
- Output and protocol. 4–20 mA two-wire is the workhorse. HART adds digital configuration and diagnostics over the same pair, which matters if the transmitter sits inside a validated loop you have to re-range without pulling it.
- Electrical termination. DIN EN 175301-803 Form A connector, M12, cable gland, or an attached cable. Washdown areas favour a sealed gland or moulded cable over a connector.
- Temperature. SIP cycles run well above process temperature. Confirm the transmitter is rated for the sterilisation temperature, not just the operating temperature — this is the single most common spec miss.
Where they are used
- Tank and vessel level — a bottom-mounted flush transmitter reads hydrostatic head and infers level, with no float, probe or moving part inside the vessel.
- CIP supply and return — proving that the clean-in-place circuit reached and held its target pressure is part of the cleaning record.
- Pump discharge and filter differential — a rising differential across a filter is the earliest signal that it is loading up.
- Fillers and dosing skids — fill accuracy tracks pressure stability upstream of the valve.
- Brewing, distilling and dairy processing — anywhere the vessel is emptied, cleaned and refilled on a cycle.
What we list here
This page carries the sanitary-connection transmitters from NOSHOK:
- NOSHOK 11 Series Sanitary Clamp Pressure Transmitters — flush-diaphragm sanitary clamp transmitters with 4–20 mA output and 0.25% accuracy (BFSL), in ranges from vacuum through 300 psig, with DIN EN 175301-803 Form A connectors or attached cable.
- NOSHOK 25 Series Intelligent Pressure & Level Transmitters — tri-clamp models with 0.2% of adjusted span accuracy, 4–20 mA two-wire with HART protocol, PG9 cable gland and a transparent cover for local configuration. Ranges include low differential spans quoted in inches of water column for tank level work.
Sanitary transmitter or sanitary gauge?
A gauge shows pressure at the valve; a transmitter sends it to a PLC, chart recorder or batch record. If the reading only has to be seen by an operator standing at the skid, a sanitary gauge is cheaper and needs no power. If the reading has to be logged, trended, alarmed or interlocked — or if it forms part of a batch record you have to produce for an auditor — you need a transmitter. Many skids carry both, so there is a local indication that does not depend on the control system being up.
Not sure which model?
Sanitary instrumentation is spec'd to the application, and the wrong diaphragm material or an under-rated SIP temperature is an expensive thing to discover after installation. Call 888-825-8800 and talk to a valve and instrumentation specialist — we have been selling this equipment for over 60 years and we will tell you plainly if what you have asked for is not the right part.
Frequently Asked Questions
The process connection. A sanitary pressure transmitter has a flush diaphragm welded directly to a hygienic fitting — usually a tri-clamp ferrule — so the sensing surface is continuous with the pipe wall. A standard industrial transmitter uses a threaded port with an internal pressure cavity, and product collects in that cavity where a CIP cycle cannot flush it out. In food, beverage, dairy and pharmaceutical service that cavity is both a contamination risk and an audit finding.
A gauge shows pressure at the valve; a transmitter sends it to a PLC, chart recorder or batch record. If the reading only has to be seen by an operator standing at the skid, a gauge is cheaper and needs no power. If it has to be logged, trended, alarmed, interlocked, or produced for an auditor, you need a transmitter. Many skids carry both, so local indication does not depend on the control system being up.
Yes — this is one of the most common uses. A flush transmitter mounted at the bottom of a vessel reads hydrostatic head, and level is inferred from it, with no float, probe or moving part inside the tank. Ranges for this work are usually specified in inches of water column rather than psi, because you are measuring head pressure, not line pressure. NOSHOK's 20 and 25 Series cover this on tri-clamp connections.
Accuracy is quoted as a percentage of span, and the application sets it:
- 0.25% is comfortable for general process control and CIP circuit monitoring.
- 0.2% of adjusted span or better is the usual call for batching, custody transfer and validated pharmaceutical steps.
Specifying tighter accuracy than the process needs adds cost without improving the result; specifying looser than a validated step allows will fail review.
Only if it is rated for the sterilisation temperature, not just the operating temperature — and this is the single most common spec miss. SIP runs well above normal process temperature, so confirm the transmitter's maximum process temperature against your SIP set point and hold time before ordering. If you tell us the cycle, we will check it against the datasheet with you. Call 888-825-8800.
No. The ferrule size has to match the tank port or tee you are landing on, not the nominal size of the run. 1-1/2" and 2" ferrules cover most process lines. Also decide the electrical termination at the same time — a DIN EN 175301-803 Form A connector, M12, cable gland or attached cable — because washdown areas generally favour a sealed gland or moulded cable over a connector.