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Trafag AG sensors & controls
LOW PRESSURE TRANSMITTER NSL 8257

LOW PRESSURE TRANSMITTER NSL 8257

Product catalog summary

Overview: The document is a technical datasheet for the NSL 8257 low pressure transmitter by Trafag, a Swiss company specializing in high-quality sensors and monitoring instruments. The transmitter is designed for applications in shipbuilding, engine manufacturing, machine tools, process technology, water treatment, and test benches.

Key Features:

Smallest design available for relative or absolute pressure measurement.
Excellent temperature and vibration resistance.
Completely welded steel sensor system without additional seals.
Thin-film-on-steel membrane technology for pressure ranges down to 0 ... 200 mbar.
High burst pressures up to 125 times nominal pressure.

Technical Specifications:

Measuring principle: Thin-film-on-steel.
Accuracy at 25°C: Typically 0.15 ... 0.8% FS.
Measuring range: 0 ... 0.2 to 0 ... 2.5 bar (0 ... 3 to 0 ... 30 psi).
Media and ambient temperature range: -40°C to +125°C.
Output signals: 4 ... 20 mA, 0 ... 5 VDC, 0 ... 10 VDC, 0.5 ... 4.5 VDC ratiometric.
Approval: DNV-GL.

Ordering Information: The type code for ordering includes options for measuring range, pressure connection, electrical connection, and output signal. Various configurations are available to suit specific application needs.

Environmental and Mechanical Data:

Protection: Minimum IP65.
Humidity: Maximum 95% relative.
Vibration resistance: 25 g (20 ... 2000 Hz).
Shock resistance: 100 g / 11 ms.
EMC Protection: Emission EN/IEC 61000-6-4, Immunity EN/IEC 61000-6-2.

Accuracy and Stability:

Accuracy at +25°C: 0.8% to 0.15% FS depending on the pressure range.
Long-term stability: 0.3% to 0.1% FS per year at +25°C.
Mounting dependency and error due to mounting torque are specified.

Dimensions and Mounting: Detailed dimensions and recommended mounting positions are provided for various configurations, ensuring proper installation and performance.

Additional Information: Further documents such as data sheets, instructions, and flyers are available on the Trafag website for more detailed guidance.

Catalog excerpts

Swiss based Trafag is a leading international supplier of high quality sensors and monitoring instruments for measurement of pressure and temperature. The very compact NSL low pressure transmitter is the only pressure transmitter in the market with thin-film-on-steel-membrane and pressure ranges down to 0 ... 200 mbar. This combination allows also for low pressure ranges accurate measurements with excellent longterm stability. Through the extraordinary high burst pressures up to 125 times nominal pressure the NSL is the first choice for critical applications. Applications ■ Shipbuilding ■ Engine manufacturing ■ Machine tools ■ Process technology ■ Water treatment ■ Test benches Features ■ Smallest design ■ Relative or absolute pressure measurement ■ Excellent temperature resistance ■ Improved vibration resistance ■ Completely welded steel sensor system without additional seals Subject to change Data sheet H72302 n 05/2020 Trafag sensors & controls Switzerland tmfciqsensors controls

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Ordering information/type code Pressure measurement range [bar] Sensor Relative pressure, accuracy: 0.3 % Absolute pressure, accuracy: 0.3 % Relative pressure, accuracy: 0.15 % 4) Absolute pressure, accuracy: 0.15 % 4) Pressure G1/4" male (Seal) connection 1/4" npt male 1/4" NPT female 6) 9/16"-18UNF male, SAE6 (J1926), seal: accessory 61 2) 6) Electrical Male electrical connector, industrial standard (contact distance 9.4 mm), Mat. PBT 01 connection Male electrical connector M12x1,4-pole, Mat. PBT 32 Male electrical connector M12x1,5-pole, Mat. PBT 35 Male electrical connector MIL-C 26482, 6-pole,...

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Imfcjq sensors ^^controls

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Recommended mounting position (Mounting dependency with 180° rotation see ’Accuracy’)

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Protection / electrical connection IP65*> Output signal 0 earth/housings 8257 .xx.xxxx.xx. 19 f | © us (pos. Supply)—> Out (Output)---> -© Us (neg. Supply)—> -© earth/housing 8257 .xx.xxxx.xx. 14/17/23 *) Provided female electrical plug is mounted according to instructions **) Ventilation via male electric plug/cable end Imfcjq sensors ^^controls

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LOW PRESSURE TRANSMITTER NSL 8257

LOW PRESSURE TRANSMITTER NSL 8257

Catalog excerpts

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