Pressure Transmitters/ Sensors & Pressostats
Trafag possesses comprehensive knowledge relating to the development, manufacture and use of pressure measurement equipment. This knowledge and wide experience in the field of sensor technology generally, together with application know-how of mechanical as well as electromechanical or electronic pressure sensors, form the basis of the successful, customer-oriented solutions for which the reputation of Trafag stands.PRESSURE TRANSMITTERS
Trafag is a technology pioneer in the miniaturization of rugged pressure transmitters.
Trafag pressure transmitters are used for the electronic measurement and evaluation of pressure values. They are available in many different versions with regard to pressure and electrical connections, measurement procedures, electric output signals, and approvals (CE, Ex, Shipbuilding, Railways).
At the very heart of Trafag pressure transmitters are pressure sensors based on either thin-film-on-steel or thick-film-on-ceramic technology derived from own in-house development and production. This ensures that the pressure sensors and associated electronics are perfectly attuned to one another, a feature subsequently successfully confirmed through reliable function and long serviceable life.
Trafag also develops and manufactures products specifically to customer requirements. Please contact us for further details.
| TYPE
(Link to data sheet) | SIGNAL OUTPUT
(Link to Standard Product) | SENSOR | MAIN FEATURES | RANGE | |
| HEX19mm: (different pressure ports & electrical connectors available) | |||||
 | NAT | 4…20mA
0...10VDC 0...5VDC 1...6VDC 0…10VDC | Thin-film-strain gauge
on-Steel | Pressure Transmitter for general industrial applications with normal industrial parameters. Excellent ability to withstand pressure peaks. Wide media temperature range. Stainless Steel wetted parts. Excellent repeatibility & stability over time. Min mpn Connector & Plug. Suitable for refrigerants & ammonia refrigeration applications. | 0…2.5
to 0…600bar (absolute or relative) |
| NSL | 4…20mA
0…10VDC 0.5...4.5VDC ratiom. | Thin-film-strain gauge
on-Steel | Pressure Transmitter for low pressure ranges in harsh applications. Wide temperature range and high vibration resistance. High overpressure rating. Standard Mini mpn Connector & plug or custom M12x1 electrical connector. | 0…0.2
to 0…2.5bar (absolute or relative) |
 | NAH | 4…20mA
0...5VDC 0…10VDC 1...6VDC 0.5…4.5VDC ratiom. | Thin-film-strain gauge
on-Steel | Pressure Transmitter for Hydraulic applications with
high accuracy parameters in harsh operating environments. Higher vibration options available. Wide media temperature range. M12x1 electrical connector. | 0…2.5
to 0…600bar (absolute or relative) |
| NAE | 4…20mA
0…10VDC 0.5…4.5VDC ratiom. | Thin-film-strain gauge
on-Steel | Pressure Transmitter for Shipbuilding
applications with medium and high requirements. Multiple marine approvals. Excellent resistance to pressure peaks, repeatable & stable operation in high vibrating applications. Wide media temperature range. M12x1 electrical connector. | 0…2.5
to 0…600bar (relative) |
 | CMP | CANopen | Thin-film-strain gauge
on-Steel | Pressure Transmitter with CANopen output for
high and medium requirements. Excellent repeatibility & stability, in applications with shock & vibration. Wide media temperature range, with M12 electrical connector to IP67. | 0…2.5
to 0…600bar (relative) |
| HEX27mm: (different pressure ports & electrical connectors available) | |||||
 | EPN | 4…20mA | Thin-film-strain gauge
on-Steel | Pressure Transmitter for Shipbuilding
applications with medium and high requirements. SW27 hex size with DIN connector. High resistance to pressure peaks in harsh applications with a wide media temparature range. | 0…2.5
to 0…600bar (relative) |
| EPR | 4...20mA | Thin-film-strain gauge
on-Steel | Pressure Transmitter for Railway applications
with medium and high requirements for vibration & shock with excellent stability & repeatibility. Wide media temperature range. DIN electrical connector. 500VAC Dielectric strength. | 0…2.5
to 0…600bar (relative) |
| EPTCR | 4…20mA
0.5...4.5VDC ratiom. | Thin-film-strain gauge
on-Steel | High pressure applications e.g. Common Rail in diesel
engines. M18 or M14 58 degree conical seal. Excellent resistance to pressure peaks. Two accuracy 7 media temperature options. Calibrated at 60 degrees Celsius for optimal accuracy. DIN electrical Connector & Plug | 0…1000
to 0…2000bar (relative) |
 | DCS | 4…20mA, 2 Relais
0…10VDC, 2 Relais | Thin-film-strain gauge
on-Steel | Pressure Transmitter with 2 adjustable
switchpoints, with LCD display. Wide media temperature eange with excellect stability & repeatibility and resistance to pressure peaks. Standard ranges to 250 bar, with higher ranges available on request. M12 electrical connector. Approvals also for shipbuilding | 0…1.0
to 0…2000bar (relative) |
 | ECO | 4…20mA
0…5VDC 0…10VDC 1…6VDC 0.5…4.5VDC ratiom. 0...10VDC mit AC-Supply | Thin-film-
on-Ceramic | Economic pressure transmitter with
normal requirements. Standard ranges +1..to +250 bar. Stainless Steel wetted parts. Versions also available for use in refrigeration, including ammonia with CR seal. Refrigeration thread 7/16-20UNF in both male and female with schrader depressor. | 0…1.0
to 0…250bar (abslolute or relative) |
| ECON | 4…20mA | Thick-film-on-ceramic | Pressure Transmitter for Shipbuilding applications with excellent media compatibility particularly seawater. Multiple marine approvals. DIN electrical connector. Stainless steel wetted parts. | 0...1.0
to 0...250bar (abslolute or relative) |
| Block-Design 30mm: | |||||
 | NPN | 4…20mA, G1/4i
4…20mA, Flansch | Thin-film-strain gauge
on-Steel | Pressure Transmitter for shipbuilding applications with medium and high requirements. DIN electrical connector, threaded & flanged process versions available. Refer data sheet 2.3.1.29 (H72313) for valve block to suit flanged connections.
| 0…2.5
to 0…400bar (relative) |
| EX pressure transmitters | |||||
 | EXNA | 4…20mA | Piezoresistive Stainless Steel wetted parts. | Pressure Transmitter for Ex applications. Approvals SEE ATEX 2642. To EEx ia IIC T4 also with GL marine approval. DIN electrical connector, threaded, flush & frontal versions available. Various accuracy & temperature classes available. | 0...0.1
to 0...1000 bar (relative) |
| Submersible pressure transmitter | |||||
 | NAL | 4…20mA | Piezoresistive Stainless Steel wetted parts. | Submersible Pressure Transmitter. Hydrostatic depth level measurement with lowest level 1 metre. PUR & Teflon Cable constructions for different media. GL approval for shipbuilding. Various accuracy options. High overpressure ratings. Ex version also available series 8858. | 0...0.1
to 0...40 bar (relative) |
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PRESSURE SENSORS
Trafag maintains a wide assortment of OEM pressure sensors. The sensor technologies used are:
■ Thin-film-on-steel
■ Thick-film-on-ceramic
The range can be expanded to include the specific applications of individual clients. In the event of an acceptable purchase volume, Trafag is also ready to manufacture customized pressure sensors. In combination with Trafag`s own ASIC technology (Application-Specific Integrated Circuits), even very special transducer or transmitter solutions can be realized.
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Products-Pressure Sensors
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PRESSURE SWITCHES
The mechanical pressure switches from Trafag are outstanding for their compact design and high-precision micro-mechanics specially developed and manufactured by Trafag itself. These switches can be installed in any position and need no electric power, making them particularly versatile in application and fully site-independent.
| TYPE
(Link to data sheet) | SIGNAL OUTPUT
(link to Standard Product) | SENSOR | MAIN FEATURES | RANGE | |
| … further versions see productfinder | |||||
 | PST...4 | on-off switch
| Bellows | Pressure Switch with compact block design. Ranges up to 40 bar. DIN connector & plug to IP65. High shock & vibration resistant. Fixed switching differential. Multiple marine approvals for Shipbuilding | -0.6…3.4
to 4…40bar |
| PST...F4 | on-off switch
| Bellows | Pressure Switch with compact block design with flange connection (refer to Trafag valve blocks)allowing multiple switch installations. Fixed switching differential. DIN connector & plug to IP65. Multiple marine approvals for Shipbuilding. | -0.6…3.4
to 4…40bar |
| PSTM...4 | on-off switch
| Membrane | Pressure Switch with compact block design. DIN Connector & Plug to IP65. High shock & vibration resistant. Fixed switching differential. Multiple marine approvals for Shipbuilding. | 1.0…2.5
to 10…100bar |
| PSTM...F4 | on-off switch
| Membrane | Pressure Switch with compact block design. DIN Connector & Plug to IP65. Fixed switching differential. Flanged connection (refer to Trafag valve blocks) allowing multiple switch installations. Multiple marine approvals for Shipbuilding. | 1.0…2.5
to 10…100bar |
| PSTK...4 | on-off switch
| Piston | Pressure Switch with compact block design. DIN Connector & Plug. High shock & vibration resistant. Fixed switching differential. Stainless Steel wetted parts. Multiple marine approvals for shipbuilding. | 1.0…10
to 40…400bar |
| PSTK...F4 | on-off switch
| Piston | Pressure Switch with compact block design. Flanged connection (refer to Trafag valve blocks)allowing multiple switch installations. Fixed switching differential. Stainless steel wetted parts. DIN Connector & Plug to IP65 Multiple marine approvals for shipbuilding. | 1.0…10
to 40…400bar |
 | PSTD | on-off switch
| Bellows | Differential Pressure Switch with
compact block design. DIN Connector & Plug to IP65. Fixed switching differential. Multiple marine approvals for Shipbuilding. | -1.0…6.0
to -1.0…8.0bar |
 | P | on-off-switch | Bellows | Pressure switch with bellows for low pressure ranges with high accuracy. Fixed switching differential. Epoxy coated aluminium housing to IP65. High shock & viobration resistance. Media temperature -20..+150 Celsius. Multiple marine approvals for shipbuilding. | -0.9…1.5
to 10…100bar |
 | PV | on-off-switch | Bellows | Pressure switch with bellows for low pressure ranges, with large adjustable switching differential. High shock & vibration resistance. Epoxy coated aluminium housing to IP65. Multiple marine approvals for shipbuilding. | -0.6…3.4
to 4…40bar |
 | PVF | on-off-switch | Bellows | Pressure switch bellows type for low pressure ranges, small adjustable switching differential. Epoxy coated aluminium housing to IP65. High shock & vibration resistance. Multiple marine approvals for shipbuilding. | -0.6…3.4
to 4…40bar |
 | PK | on-of-switch | Piston in Stainless Steel | Pressure Switch with stainless steel piston. For applications with pressure peaks and high overpressure. High shock & vibration resistance. Epoxy coated aluminium housing to IP65. Multiple marine approvals for ship building. | 1...10
to 60…600bar |
| EX pressure switches | |||||
 | EXP | on-off switch
| Bellows in stainless steel. | Ex Pressure Switch. Fixed switching differential. Protection to IP65. To EEx ed IIC T6 (PTB 02 ATEX 1050. | -0.9...1.5
to 4.0...40.0 bar |
 | EXPK | on-off switch
| Piston in Stainless Steel | Ex Pressure Switch for pressure peaks and high overpressure. Fixed switching differential. To EEx ed IIC T6 (PTB 02 ATEX 1050). | 1...40
to 60...600 bar |
| EXPD | on-off switch
| Bellows in Stainless Steel | Ex Pressure Switch for differential pressure measurement. Wet/wet process. To EEx ed IIC T6 (PTB 02 ATEX 1050. Fixed switching differential. | -1...6bar
-1...8bar -1...12bar -1...18bar |
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