Pressure measurement - Import export

The compact ECO2-Ei digital manometers are budget-friendly and provide a good resolution. The minimum or maximum value since the last reset can be displayed at the same time as the current pressure value in a wide variety of units of pressure. The swivel adapter allows the device to be optimally positioned. Power is supplied by a conventional CR2430 coin cell battery (provided). Intrinsically safe – suitable for use in explosive atmospheres.

The compact LEO2-Ei digital manometers are budget-friendly and provide high accuracy. The minimum or maximum value since the last reset can be displayed at the same time as the current pressure value in a wide variety of units of pressure. The swivel adapter allows the device to be optimally positioned. Power is supplied by a conventional CR2430 coin cell battery (provided). Intrinsically safe – suitable for use in explosive atmospheres.

The LEO1-Ei digital manometers have a measuring interval of 5000 individual measurements per second, which allows them to record fast pressure peaks. The minimum or maximum value since the last reset can be displayed at the same time as the current pressure value in a wide variety of units of pressure. Power is supplied by a conventional CR2430 coin cell battery (provided). Intrinsically safe – suitable for use in explosive atmospheres.

The high-accuracy LEO-Record-Ei digital manometers can record pressure and temperature autonomously for long periods thanks to their memory function. The data logger can be connected to a computer via the RS485 interface for configuration and for reading out the recorded data. The current pressure value can be displayed in a wide variety of units of pressure. Power is supplied by a high-quality 3,6 V lithium battery. Intrinsically safe – suitable for use in explosive atmospheres.

The high precision of the LEX1-Ei digital manometers makes them ideally suited to calibration and test applications. The minimum or maximum value since the last reset can be displayed at the same time as the current pressure value in a wide variety of units of pressure. Power is supplied by a conventional CR2430 coin cell battery (provided). Intrinsically safe – suitable for use in explosive atmospheres.

The LEO3 digital manometers also output the pressure values as an analog signal for display purposes and have an RS485 interface for integration in bus systems and communication with computers. The current 4...20 mA measured value is shown on the display at the same time as the pressure value. The minimum or maximum value since the last reset can also be displayed at the touch of a button. Power is supplied directly via the 4...20 mA circuit.

The compact ECO2 digital manometers are budget-friendly and provide a good resolution. The minimum or maximum value since the last reset can be displayed at the same time as the current pressure value in a wide variety of units of pressure. The swivel adapter allows the device to be optimally positioned. Power is supplied by a conventional CR2430 coin cell battery (provided).

The compact LEO2 digital manometers are budget-friendly and provide high accuracy. The minimum or maximum value since the last reset can be displayed at the same time as the current pressure value in a wide variety of units of pressure. The swivel adapter allows the device to be optimally positioned. Power is supplied by a conventional CR2430 coin cell battery (provided).

The LEO1 digital manometers have a measuring interval of 5000 individual measurements per second, which allows them to record fast pressure peaks. The minimum or maximum value since the last reset can be displayed at the same time as the current pressure value in a wide variety of units of pressure. Power is supplied by a conventional CR2430 coin cell battery (provided).

The high precision of the LEX1 digital manometers makes them ideally suited to calibration and test applications. The minimum or maximum value since the last reset can be displayed at the same time as the current pressure value in a wide variety of units of pressure. Power is supplied by a conventional CR2430 coin cell battery (provided).

The pressure transmitters of the 9LD series use the chip-in-oil technology developed by KELLER, uniting a pressure measuring cell, digital temperature compensation and signal processing in a compact housing made of stainless steel or Hastelloy. The transmitters are extremely resistant to environmental influences and delivery highly accurate measurement results as a digital output signal. The I2C interface and the low supply voltages make it easy to integrate in microcontroller-based systems. The extremely low power consumption is ideal for battery-operated devices. The D line is perfect for IoT solutions.

The pressure transmitters of the 9LC series use the chip-in-oil developed by KELLER, uniting a pressure measuring cell, digital temperature compensation and signal processing in a compact housing made of stainless steel or Hastelloy. The transmitters are extremely resistant to environmental influences and deliver compensated measurement results as an analog, ratiometric 0,5...4,5V output signal over a wide temperature range.

The pressure transducers of the PD-10L series have been developed to measure differential pressure. These OEM pressure transducers have a single silicon diaphragm in their interior, which is pressurised from both sides and measures the pressure difference directly. This design enables them to measure tiny pressure differences even at an extremely high line pressure.

Mechanically robust and with a chemical and condensed waterproof sensing area, the digital IST AG HYT humidity modules offer a wide application window and an optimal price-performance ratio. Precisely calibrated, the HYT modules deliver an outstanding accuracy and excellent long-term stability even at high humidity - ideal for sophisticated mass applications, industrial handheld devices and precise humidity transmitters. Further advantages of the HYT 939 digital humidity module include: — Calibrated and temperature compensated — Excellent humidity/temperature accuracy and stability — High chemical resistance — I2C protocol (address 0x28 or alternative address) — Wide humidity and temperature range (0 % RH to 100 % RH and -40 °C to +125 °C) — Very low drift — Very stable at high humidity — Interchangeable without adjustments — Pressure-resistant version (up to 16 bar) upon request

This pneumatic hand pump can generate negative pressure/vacuum and pressures of up to 25 bar. Thanks to the integrated fine adjustment valve, any calibration pressure can be configured precisely and rapidly, making the pump ideally suited to testing measuring equipment. An additional manometer (not supplied) is needed for reference measurement of the configured pressure. KELLER recommends manometers in the LEX1 series with a suitable pressure range.

The capacitive pressure transmitters of the 41X series are designed for measuring relative pressure values in the mbar and µbar range. They use digital compensation with a mathematical model to achieve an accuracy of 0,1 %FS – in the temperature range from 10 to 40 °C, this value even corresponds to the total error band. In addition to the digital RS485 interface, the X-line transmitters have a rangeable analog current or voltage output.

The compact pressure transponders consist of a digital, extremely robust D-line pressure transmitter and a passive RFID module. They obtain their power from the reader and therefore do not require a power connection or battery replacement. The 21D RFID transponders are therefore perfect for convenient on-side reading of instantaneous values, e.g. during inspection tours or safety checks on large vehicles.

The pressure transmitters of the 23SY-Ei series are designed for elevated requirements in industrial applications. Thanks to its modular concept, this series is highly flexible and makes it possible to realise customer-specific requirements in very little time. The sophisticated compensation circuit makes it possible to specify a narrow total error band. Intrinsically safe – suitable for use in explosive atmospheres.

The capacitive pressure transmitters of the 41X-Ei series are designed for measuring relative pressure values in the mbar and µbar range. They use digital compensation with a mathematical model to achieve an accuracy of 0,1 %FS – in the temperature range from 10 to 40 °C, this value even corresponds to the total error band. In addition to the digital RS485 interface, the X-line transmitters have a rangeable analog current or voltage output. Intrinsically safe – suitable for use in explosive atmospheres.

The HPX high-pressure calibrator is a high-precision calibration instrument for pressures between 0 bar and 700 bar. The functional calibrator is supplied in a sturdy carrying case and pressure can be quickly generated manually. It is therefore ideal for use in the field. The pressure is measured by the integrated LEX1 manometer and is both shown on the display and output via the RS485 interface. Additional functions such as zero point resetting, peak and trough pressure value indication and leak measurement make it even easier to take measurements.

The MPX pressure calibrator is a high-precision calibration instrument for pressures between -0,85 bar and 25 bar (after taring to ambient pressure). The functional calibrator is supplied in a sturdy carrying case and pressure can be quickly generated manually. It is therefore ideal for use in the field. The pressure is measured by the integrated LEX1 manometer and is both shown on the display and output via the RS485 interface. Additional functions such as zero point resetting, peak and trough pressure value indication and leak measurement make it even easier to take measurements.

The LPX low-pressure calibrator is a high-precision calibration instrument for pressures between -0,85 bar and 10 bar (after taring to ambient pressure). The functional calibrator is supplied in a sturdy carrying case and pressure can be quickly generated manually. It is therefore ideal for use in the field. The pressure is measured by the integrated LEX1 manometer and output both on the display and via the RS485 interface. Additional functions such as zero point resetting, peak and trough pressure value indication and leak measurement make it even easier to take measurements.

The remote data transmission unit ARC1-Box-SB with logger function is equipped with safety barriers and, in combination with intrinsically safe transmitters, it is suitable for use in hazardous applications. The unit is encased in a robust, water-tight aluminium housing. It records measurements made by external sensors (e.g. a level sensor) and periodically transmits the collected data via 2G, 3G, 4G or LoRaWAN. The high-performance battery and sophisticated power management enable autonomous operation for up to 10 years. KELLER provides a range of licence-free software solutions for configuration and data processing. The easiest and most convenient way to access the collected data is via KOLIBRI Cloud.

The remote data transmission unit ARC1-Box with logger function is encased in a robust, water-tight aluminium housing. This unit records measurements made by external sensors (e.g. a level sensor) and periodically transmits the collected data via 2G, 3G, 4G or LoRaWAN. The high-performance battery and sophisticated power management enable autonomous operation for up to 10 years. KELLER provides a range of licence-free software solutions for configuration and data processing. The easiest and most convenient way to access the collected data is via KOLIBRI Cloud.

The remote data transmission unit ARC1-Tube with logger function is encased in a robust, stainless steel housing, which is ideally suited to installation in 2" monitoring pipes. This unit records measurements made by external sensors (e.g. a level sensor) and periodically transmits the collected data via 2G, 3G, 4G or LoRaWAN. The high-performance battery and sophisticated power management enable autonomous operation for up to 10 years. KELLER provides a range of licence-free software solutions for configuration and data processing. The easiest and most convenient way to access the collected data is via KOLIBRI Cloud.

The remote data transmission unit ADT1-Box is encased in a robust, water-tight plastic housing. The LoRa module, which can be configured on a country-specific basis, establishes a connection with the Internet and makes it possible to collect measurement data in a low-cost and energy-saving manner. These autonomous devices can be linked with digital level sensors and pressure transmitters in the KELLER D and X product lines. With three conventional, high-quality AA batteries, the system can operate autonomously for up to 5 years. The LoRaWAN provider can be selected freely or an in-house or open source infrastructure and associated services can be used. The easiest and most convenient way to access the collected data at the end of the transmission chain is via KOLIBRI Cloud from KELLER.

The remote data transmission unit ADT1-Tube is encased in a robust, stainless steel housing, which is ideally suited to installation in 2" monitoring pipes. The LoRa module, which can be configured on a country-specific basis, establishes a connection with the Internet and makes it possible to collect measurement data in a low-cost and energy-saving manner. These autonomous devices can be linked with digital level sensors and pressure transmitters in the KELLER D and X product lines. With three conventional, high-quality AA batteries, the system can operate autonomously for up to 5 years. The LoRaWAN provider can be selected freely or an in-house or open source infrastructure and associated services can be used. The easiest and most convenient way to access the collected data at the end of the transmission chain is via KOLIBRI Cloud from KELLER.

The series 21DC RFID combines the digital and extremely robust D-line pressure transmitters and data logger electronics with an RFID interface. The built-in battery has a lifespan of 5 to 10 years. The pressure and temperature values are each saved as a pair of numbers in the memory. Instantaneous values and saved data can still be read if the battery is flat, because power is supplied by the reader.

The DCX-22AA-CTD data loggers measure conductivity and temperature as well as pressure, along with the depth of bodies of water. They compensate for the air pressure using an additional, water-tight absolute pressure sensor with a stainless steel separating diaphragm. Unlike gauge pressure systems with a capillary tube, this system is completely resistant to moisture and can therefore be immersed. Thanks to their long-life battery, they can keep recording measurement results for years (up to 10 years at a rate of one measurement per hour). The logger can be configured using the supplied software (measurement interval, incident management, delayed measurement start etc.) and data that has been read can be displayed in a graph or chart, corrected using air pressure values, converted into fill levels or other units, and exported.