KELLER Pressure Japan List of Products and Services

The pressure sensor series 23SX is a high-precision pressure sensor that compensates for temperature dependence and non-linearity through mathematical correction within the microcontroller. It comes standard with two outputs: digital RS485 and analog output via a D/A converter. With a fully welded structure that does not use internal seals, it can be used in a wide range of applications. Only stainless steel comes into contact with the measured medium. 【Features】 - Standard equipped with two outputs: digital RS485 and analog output - The analog output can be range-changed via digital RS485 - Achieves excellent long-term stability - Fully welded structure without internal seals 【Technology】 - Piezo-resistive pressure sensor - Correction technology using a mathematical model to provide accurate pressure values - Based on the technology used in the 33X series, achieving the highest level of accuracy

The differential pressure transmitter PD-23X is a high-precision differential pressure sensor that can also handle liquid/liquid differential pressure. A single silicon diaphragm integrated inside directly measures the pressure difference applied from both ports. This design allows for the measurement of small pressure differences under very high line pressures. It achieves an extremely high accuracy of 0.1% full scale (FS) using correction technology based on a mathematical model that provides accurate pressure values. 【Features】 - ±0.1% FS accuracy - Capable of measuring liquid/liquid differential pressure - Standard dual outputs of digital RS485 and analog output - Analog output can be range-adjusted via digital RS485 - Temperature range of -20 to 125℃ - High line pressure (up to 60 MPa) - Excellent long-term stability 【Technology】 - Piezo-resistive pressure sensor - Correction technology using a mathematical model for accurate pressure values

The pressure sensor 33X achieves an extremely high accuracy of 0.05% full scale (FS) in the temperature range of 10 to 40°C through a mathematical correction method. An additional option for high precision of 0.01% FS is also available. In addition to a digital RS485 interface, analog current or voltage outputs can be obtained. 【Features】 - Accuracy of ±0.05% FS in the temperature range of 10 to 40°C - Standard dual outputs of digital RS485 and analog output - Analog output can be range-adjusted via digital RS485 - Available in barometric range type (800–1200 hPa) and differential pressure range type (from 0–30 kPa to 0–3 MPa) - Temperature range of -20 to 125°C (optional -40°C also available) - Excellent long-term stability 【Technology】 - Piezo-resistive pressure sensor - Correction technology using a mathematical model to produce accurate pressure values

The pressure sensor 33X achieves an extremely high accuracy of 0.05% full scale (FS) over a temperature range of 10 to 40°C through a mathematical correction method. In addition to a digital RS485 interface, analog current or voltage outputs are also available. 【Features】 - Accuracy of ±0.05% FS over a temperature range of 10 to 40°C - Standard dual outputs of digital RS485 and analog output - Excellent long-term stability 【Technology】 - Piezo-resistive pressure sensor - Correction technology using a mathematical model to provide accurate pressure values

The differential pressure transmitter PD-33X is a high-precision differential pressure sensor capable of measuring liquid/liquid differential pressure. A single silicon diaphragm integrated inside directly measures the pressure difference exerted from both ports. This design allows for the measurement of small pressure differences even under very high line pressures. It achieves an extremely high accuracy of 0.05% full scale (FS) in the temperature range of 10 to 40°C using correction technology based on a mathematical model that provides accurate pressure values. 【Features】 - Accuracy of ±0.05% FS in the temperature range of 10 to 40°C - Capable of measuring liquid/liquid differential pressure - Standard equipped with two outputs: digital RS485 and analog output - Analog output can be range-changed via digital RS485 - Temperature range of -20 to 125°C (optional -40°C available) - High line pressure (up to 60MPa) - Excellent long-term stability 【Technology】 - Piezo-resistive pressure sensor - Correction technology using a mathematical model to provide accurate pressure values

The 23SXio series high-precision pressure transmitters, equipped with an IO-Link interface, can also be used as pressure switches. The IO-Link interface, compliant with IEC 61131-9, allows the 23SXio to be seamlessly integrated into intelligent automation systems. Switching functions and other parameters can be called and reconfigured via IO-Link, enabling rapid commissioning and flexible adaptation to specific requirements. This minimizes machine downtime and reduces workload. The pressure connection is made of stainless steel with a fully welded structure and no internal seals, ensuring that the 23SXio series delivers the highest durability and reliability even in harsh environments. The 23SXio series pressure transmitters are the ideal solution for modern automation applications that require high precision, flexibility, and durability.

The 21Zio series pressure transmitters, equipped with an IO-Link interface, can also be used as pressure switches. The IO-Link interface, compliant with IEC 61131-9, allows the 21Zio to be seamlessly integrated into intelligent automation systems. Switching functions and other parameters can be called and reconfigured via IO-Link, enabling rapid commissioning and flexible adaptation to specific requirements. This minimizes machine downtime and reduces workload. The pressure connection is made of stainless steel with a fully welded structure and no internal seals, ensuring that the 21Zio series delivers the highest durability and reliability even in harsh environments. It is the ideal solution for modern automation applications that require high precision, flexibility, and durability.

The 23SXc series pressure sensor achieves an extremely high accuracy of ±0.1% full scale (FS) through a mathematical correction method. Equipped with a CANopen interface, this high-precision pressure sensor is perfect for automation solutions in various fields. It can be used in a wide range of applications with a fully welded structure that does not use internal seals. The parts that come into contact with the measuring medium are made of SUS316L. 【Features】 〇 CAN bus compliant with ISO 11898-2, device profile CiA 404 V1.2 〇 Sampling rate >1.8 kHz 〇 Supports multiple pressure and temperature units 〇 Excellent long-term stability 〇 Wide operating temperature range of -40 to 125 °C 【Technology】 〇 Piezo-resistive pressure sensor 〇 Correction technology using a mathematical model that provides accurate pressure values 〇 Based on the technology used in the 33X series, achieving the highest level of accuracy 〇 Fully welded structure without internal O-rings

【Features】 - Accuracy of ±0.1% FS over a temperature range of -10 to 80℃ - Standard dual outputs of digital RS485 and analog output - Excellent long-term stability - Welded flush diaphragm 【Technology】 - Piezo-resistive pressure sensor - Correction technology using a mathematical model for accurate pressure values - Ideal for mounting with O-rings

The 20SX series pressure sensor head with screw connection is specially designed and optimized for OEM applications, achieving the highest level of accuracy, excellent long-term stability, and high pressure resistance. Features that many pressure sensor manufacturers offer only as options are standard in Keller products. The 20SX series is characterized by a compact, fully welded design and high-precision, range-changeable digital correction electronics. Accuracy errors, including thermal effects, are minimized or corrected using mathematical models. As a result, it achieves the highest accuracy and an extremely narrow Total Error Band (TEB). The introduction of the 20SX series has further expanded OEM products. 【Features】 • High accuracy of ±0.05% FS • Standard dual outputs of digital RS485 and analog output • Analog output can be range-changed via digital RS485 • Excellent long-term stability 【Technology】 • Piezo-resistive pressure sensor • Fully welded structure without internal seals • Correction technology using mathematical models to provide accurate pressure values • Based on the technology used in the 33X series, achieving the highest level of accuracy.

The capacitive pressure sensor series 41X 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 even 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 0-10 kPa/output 4-20 mA → pressure range 2-6 kPa/output 4-20 mA). - Using software CCS30 and converter K-114, pressure values can be displayed on a PC. Recording of pressure signals and graphic display, as well as zero adjustment, are also possible. - Up to 128 transmitters can be connected to the bus system. - Intrinsically safe explosion-proof type 41X-Ei / differential pressure type PD-41X.

The pressure sensor 35X achieves an extremely high accuracy of 0.05% full scale (FS) over a temperature range of 10 to 40°C through a mathematical correction method. An additional option for high precision of 0.01% FS is also available. In addition to a digital RS485 interface, analog current or voltage outputs are provided. The pressure connection features a G1/2 flush diaphragm structure. 【Features】 - ±0.05 %FS accuracy - The flush diaphragm structure allows for cleaning of the pressure receiving part! - Standard dual outputs of digital RS485 and analog output - The analog output can be range-adjusted via digital RS485 - Temperature range of -40 to 125°C - Excellent long-term stability 【Technology】 - Piezo-resistive pressure sensor - Correction technology using a mathematical model to produce accurate pressure values *What is a flush diaphragm structure? Typical pressure sensors have a screw at the tip, with the pressure receiving part located behind it. However, if you want to measure the pressure of ink or need to regularly clean the pressure receiving part, it is not possible to see inside, making it difficult to confirm whether it has been cleaned properly. In such cases, a flush diaphragm with the pressure receiving surface exposed is recommended!

The pressure sensor 35XHT/35XHTT can be used for media temperatures up to 150°C and is suitable for use in bioreactors and autoclaves that require regular sterilization due to its flush diaphragm structure. It achieves an accuracy of ±0.15% full scale (FS) over a temperature range of 20 to 120 °C using a mathematical correction method. The pressure connection of the standard model in the 35XHTT series features a G1/2 flush diaphragm structure. 【Features】 〇 Usable for media temperatures up to 150°C 〇 Standard equipped with two outputs: digital RS485 and analog output 〇 Analog output can be range-adjusted (turndown) via digital RS485 〇 Excellent long-term stability *What is a flush diaphragm structure? Unlike regular pressure sensors that have a screw at the tip with a pressure receiving part behind it, if you want to measure the pressure of ink and need to regularly clean the pressure receiving part, you cannot confirm if it has been cleaned properly since you cannot see inside. In such cases, a flush diaphragm with the pressure receiving surface exposed is recommended!

The high-temperature pressure sensor 35XHTC can be used for media temperatures up to 300°C. It is significantly different from the commonly available pressure sensors that can simply be used at high temperatures, as it achieves high accuracy of ±0.5% full scale (FS) even at a media temperature of 300°C through a mathematical correction method. In addition to a digital RS485 interface, analog current or voltage outputs are available, and scaling settings can be configured via the digital signal. The pressure connection is standard G1/2 male thread (flush diaphragm). *From 2025, the model name will change to 35HTCX. 【Features】 • Can be used at media temperatures up to 300°C, achieving ±0.5% accuracy at 300°C • Standard dual outputs of digital RS485 and analog output • Analog output range can be changed via digital RS485 (turndown) • Excellent long-term stability • Cooling capillary tube structure

The pressure sensor 35X achieves an extremely high accuracy of 0.05% full scale (FS) in the temperature range of 10 to 40°C through a mathematical correction method. In addition to a digital RS485 interface, analog current or voltage outputs are also available. 【Features】 - Pressure connection with a G1/2 flush diaphragm structure. Difficult to accumulate liquid and easy to clean. - Accuracy of ±0.05% FS in the temperature range of 10 to 40°C. - Standard equipped with two outputs: digital RS485 and analog output. - Analog output can be range-changed via digital RS485. - Excellent long-term stability. 【Technology】 - Piezo-resistive pressure sensor. - Correction technology using a mathematical model to provide accurate pressure values. ● What is a flush diaphragm structure? → The pressure receiving surface is protruding at the front. ● What are the characteristics of a flush diaphragm structure? 1. Suitable for measuring the pressure of viscous liquids such as ink. 2. Suitable for applications that require regular cleaning. 3. Can be used in food processes if it is a clamp type.

The differential pressure sensor series PD-39X is a high-precision model that indirectly measures differential pressure using two absolute pressure sensors and boasts high pressure resistance performance. In addition to a digital output (RS485), it comes standard with two outputs: analog current or voltage output. The analog output can be freely scaled within the line pressure range based on the settings of the digital signal. There is also an intrinsically safe explosion-proof type available (PD-39X-Ei).