Keller Company Essential Safety Explosion-Proof Low Pressure Sensor Series 41X-Ei
Low pressure intrinsic safety explosion-proof pressure sensor achieves high precision!
The capacitive pressure sensor series 41X-Ei is designed to measure gauge pressure in low-pressure ranges. Through a mathematical correction method, it achieves high accuracy of ±0.2 to 0.3% FS in low-pressure measurements within a temperature range of 10 to 50°C. In addition to a digital RS485 interface, analog current or voltage outputs are also available. 【Features】 - Although calibrated in the standard range, programming of the analog output signal within the standard pressure range is possible using the license-free software CCS30 (e.g., standard pressure range 0 to 10 kPa/output 4 to 20 mA → pressure range 2 to 6 kPa/output 4 to 20 mA). - Using software CCS30 and converter K-114, pressure values can be displayed on a PC, allowing for recording of pressure signals, graphical display, and zero adjustment. - Up to 128 transmitters can be connected to the bus system. - Intrinsically safe explosion-proof type.
basic information
Pressure range: 0 to 3 kPa to 0 to 30 kPa Accuracy: ± 0.1% FS Overall accuracy: ± 0.2% FS @ 10 to 50 °C Output: RS485, 4 to 20 mA, 0 to 10 V Temperature range: -20 to 80 °C *Software CCS30 The license-free software CCS30 is used for configuration and recording of measurement values. Measurement - Real-time graphic display - Adjustable measurement and saving intervals - Export function - Connection to bus systems - Up to 100 measurements per second Configuration - Information retrieval (pressure and temperature range, software version, serial number, etc.) - Zero and span recalibration - Analog output rescaling (units, pressure range) - Low-pass filter adjustment - Selection of instrument address and baud rate
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Low pressure + explosion-proof application
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Examples of applications for explosion-proof pressure sensors - automotive, petroleum, aerospace, chemical industries, etc.
Products suitable for environments with a risk of explosion are used in a wide range of applications. Since 1988, KELLER has been developing and manufacturing explosion-proof pressure measurement technology. Based on years of experience and achievements, KELLER's explosion-proof pressure sensors have received high praise in many industries. Examples of applications (one example each): - Automotive sector: Painting robots When atomized by a spray nozzle, the mist can generate a flammable mixture. - Oil sector: Monitoring fuel levels at gas stations At gas stations, there is a risk of gas atmospheres exploding due to electrical sparks. - Aviation industry: De-icing machine liquids De-icing fluids contain more than 50% highly flammable glycols and are used in a mixture with water. - Chemical industry: Monitoring the storage conditions of chemicals Warehouses owned by chemical manufacturers and distributors store numerous containers of various chemicals, which may contain all kinds of explosive and hazardous substances.
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Understanding Explosion-Proof Zones and Equipment Categories Correctly - What is an ATEX Zone? A Clear Explanation Using Real Examples
There is always a risk of explosion in areas where flammable gases, vapors, mists, or dust may be present. Examples include the chemical industry, energy supply, biogas plants, solvent processing facilities, hydrogen infrastructure, and gas distribution systems. An important point to understand about explosion protection is the location of the measurement point within the zones. A common misconception is that if flammable gas is used, the highest hazard classification automatically applies; however, the frequency of explosive atmospheres can vary significantly from one industrial plant to another. For instance, explosive mixtures may always be present inside a tank, while they rarely occur in well-ventilated piping areas, typically only during abnormal situations. This is precisely why ATEX systems classify zones as 0, 1, and 2. The related links below provide detailed explanations of the basic principles of ATEX zones, real-life examples from hydrogen filling stations, comparisons of protection concepts (why safety barriers or isolation amplifiers are necessary), and what types of pressure sensors we at KELLER can offer for each zone.
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Our company is the Japanese branch of KELLER Pressure (Switzerland). Since its establishment, KELLER Pressure has developed and produced all its products at its factory in Winterthur, Switzerland, and is a leading manufacturer of pressure transducers and pressure transmitters, certified with ISO 9001. As a core business, we manufacture and sell over 1.3 million pressure measurement cells annually, offering products with pressure ranges from 5 mbar (500 Pa) to 2000 bar (200 MPa). With the extensive experience gained from all our products, our solutions can cater to a variety of applications. We are highly regarded as a manufacturer of high-precision pressure sensors and also accommodate OEM and custom products. We have received positive feedback from many customers. Contact: sales.jp@keller-pressure.com