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P135

Product catalog summary

Performance Features
The P135 Level Transmitter features a dry capacitive pure ceramic sensor with 99.9% purity, suitable for 1" pipes due to its 22 mm diameter. It offers a wide measuring range from 0…50 mbar to 0…20 bar, with accuracy up to ≤ 0.2% (≤ 0.3% for ATEX variant). The device provides an analog output of 4…20 mA with 2-wire configuration and includes enhanced protection against voltage surges. An optional PT100/PT1000 sensor is available for temperature measurement. It is certified for use in potentially explosive areas (Ex I I 1G Ex ia IIC T4 Ga, I M2 Ex ia I Mb).

Areas of Application
The P135 is designed for use with gaseous media, water, wastewater, oil, fuel, viscous and pasty media, aggressive media, and in potentially explosive environments. Its slim design allows for optimal installation in 1" pipes, making it ideal for industrial and drinking water applications, as well as level measurements in gasoline and oil tanks. The stainless steel housing (1.4404) ensures compatibility with various media.

2nd Generation Improvements
The second generation of the P135 features improved signal characteristics, reduced temperature effects, increased electromagnetic compatibility, and maintains identical installation dimensions, allowing for a 1:1 exchange with the first generation.

Technical Data
The P135 operates with a power supply of 12…30 V DC and offers a response time of 200 ms. It maintains long-term stability of ≤ ± 0.2% FS per year and a switch-on time of less than 1 second. The device is protected against short-circuits and reverse polarity, and complies with EN 61326 for electromagnetic compatibility. The housing is made of stainless steel 1.4404, and the sensor is pure ceramic Al2O3 (99.9%).

Measuring Ranges and Ordering Code
The P135 offers various measuring ranges from 0…50 mbar to 0…20 bar, with overload protection. It is available with different output signals, housing materials, cable lengths, and cable materials. Custom lengths and non-standard ranges are available upon request.

Catalog excerpts

Datasheet Level Transmitter P135PERFORMANCE FEATURES ■ Dry capacitive pure ceramic sensor (99,9%) ■ Smallest measuring range: 0...50 mbar/ 0...0,5 mH2O ■ Largest measuring range: 0.20 bar/ 0.200 mH2O Accuracy < 0,2% (< 0,3% ATEX Variant) ■ Increased protection against voltage surges ■ Optionally integrated PT100 / PT1000 Sensor for temperature measurement Due to its slim design and a diameter of 22 mm, the P135 model can be optimally installed in 1" pipes. Typical applications are in the field of industrial and drinking water, level measurements in gasoline and oil tanks can also be easily implemented. The integrated lightning protection shields the ceramic sensor element from voltage peaks and ensures a long-term reliable measurement. Its housing is made of high-quality stainless steel 1.4404 and is therefore suitable for almost all media. Our modular design concept provides a wide variety of products. Feel free to contact us if you need a customization that is not listed in this Datasheet. ■ Well / Deep well ■ Viscous and pasty media ■ Potentially explosive areas 2. GENERATION ■ Improved signal characteristics ■ Pure ceramic sensor (99,9%) ■ Lower temperature effect ■ Increased electromagnetic compatibility ■ Identical installation dimensions ■ 1:1 exchangeable with 1st generation Noding Messtechnik GmbH • Oldenfelder Bogen 29 • D-22143 Hamburg, Germany • Tel.: 040 / 67 58 51 - 0 Fax: 040 / 67 58 51 - 49 • Internet: www.noeding-messtechnik.de • E-mail: inf

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ELECTRICAL CONNECTION Measuring range < ± 0,5 % FS @ 25 °C at pressure range < 100 mbar 4.20 mA, 2-wires and Pt 100 / Pt 1000 temperature sensor, 3-wires white ■ LOAD Noding Messtechnik GmbH • Oldenfelder Bogen 29 • D-22143 Hamburg, Germany • Tel.: 040 / 67 58 51 - 0 Fax: 040 / 67 58 51 - 49 • Internet: www.noeding-messtechnik.de • E-mail: info@noeding-messt

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Measuring ranges see table 99 Non-standard range (on request) Material housing / sensor seal Cable length Specify custom lengths in meters 2 PUR cable 4 HDPE cable 6 FEP cable Options (Multiple selections possible) S Laser marking DH Diesel/Fuel oil 07/2025 A - Modifications reserved without notice Noding Messtechnik GmbH • Oldenfelder Bogen 29 • D-22143 Hamburg, Germany • Tel.: 040 / 67 58 51 - 0 Fax: 040 / 67 58 51 - 49 • Internet: www.noeding-messtechnik.de • E-mail: [email protected]

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

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