KELLER Pressure Japan List of Products and Services

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 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 capacitive differential pressure transmitter PD-41X is designed to measure small differential pressures. It utilizes correction technology based on a mathematical model that provides accurate pressure values, achieving an accuracy of 0.2% full scale (FS). In addition to a digital RS485 interface, analog current or voltage outputs are available. 【Features】 - Although calibrated for a 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 the software CCS30 and converter K-114, pressure values can be displayed on a PC. Recording of pressure signals and graphical display, as well as zero adjustment, are also possible. - Up to 128 transmitters can be connected to the bus system.

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).

The K-114 series converter is an interface converter for communicating between Keller devices (such as pressure sensors and level gauges) equipped with RS485 communication and a PC via USB. 【Features】 〇 RS485 (Keller device side) ⇔ USB communication (half-duplex communication) 〇 Power supply to connected devices from the PC 〇 Easy connection to devices and PC using the included cable 〇 Dedicated software is available in Japanese, license-free, and provided at no cost * K-114 series K-114, K-114-A, K-114-B, K-114-M, K-114-V