Differential and Low Range Pressure Transmitters

The PA600-LR series of low range pressure sensors are suitable for measuring mBar pressures in gas and liquid media across a wide range of general purpose and industrial applications. The standard the PA600-LR comes with: Viton O-ring, 303 stainless steel case, 316L Stainless Steel diaphragm with Silicon-based sensing element and a ¼"BSP male process connection, but various standard options are available. The PA600-LR series provides a wide choice of electrical outputs from its ASIC-based amplifier circuit, these include 4-20mA, 0-5V, 0-10V, various mV/V, as well as a ratiometric 0.5-4.5vC (10% to 90% of supply voltage) signal that requires a 5V (2.7 - 5.5vDC acceptable).

PA600 Series covers higher range pressure ranges from 500mBar.

The Keller PD39X series differential pressure transducer is designed to indirectly measure differential pressure by using two absolute pressure sensors providing a more robust sensor in relation to unbalanced pressures that transducers using a single sensor. Differential pressure ranges between 0-3 and 0-300 bar are available with output signal options of 4-20mA and 0-10V. These units also have an RS485 output in addition to the standard analogue outputs. Typical error band ≤0,05 %FS typ. (linearity, hysteresis, repeatability and temperature effect

The Keller PD39XEi Series transducers are suitable for monitoring differential pressures in a hazardous area. The sensor uses two absolute pressure sensors, allowing for unbalanced pressures between each port, which isn't possible using a single sensor cell that would be damaged by the imbalance. Line pressures are available from 3 up to 300 Bar with the differential pressure range configurable within this range (at least 5% of line pressure. The RS485 output allows readings to be collected via RS485, or to connect to the CCS30 software using the K104 or K114B download cable. The scaled output can be either a 4-20mA or 0-10V.

Keller Series PD23 Differential Pressure Transducers and Transmitters. These piezoresistive pressure transmitter are designed for precision measurements in industrial applications for pressures ranging from 200mBar up to 20 Bar for liquids and gases. Standard line pressure up to 200 Bar, Max 600 Bar. Series 23 has a standard ¼" BSP threaded connection. Output options include a 2-wire 4-20mA, 3- wire 0-20mA or 0-10vDC with a standard frequency response of 1kHz with options available for 5kHz and 10kHz.

The PR41X series are designed for measuring very low pressure values in the mBar or µBar ranges. The Series 41X capacitive pressure transmitter from Keller combines a ceramic measurement cell for low pressure ranges with the µP electronics of the digital series 30 transmitter. The pressure values from the signals of the pressure and temperature sensors are determined by polynomial compensation. The values can be displayed and stored on a PC via an RS485 interface and programming can also be carried out. Analogue outputs are scaleable within the sensors range using the CC30 software and options are available for 4-20mA or 0-10V.

The PR41XEi series are designed for measuring very low pressure values in the mBar or µBar ranges in hazardous areas. The Series 41XEi capacitive pressure transmitter from Keller combines a ceramic measurement cell for low pressure ranges with the µP electronics of the digital series 30 transmitter. The pressure values from the signals of the pressure and temperature sensors are determined by polynomial compensation. The values can be displayed and stored on a PC via an RS485 interface and programming can also be carried out. Analogue outputs are scaleable within the sensors range using the CC30 software and options are available for 4-20mA or 0-10V.

Hazardous Area Approved

The PD41X series are designed for measuring differential pressure values in the mBar and µBar ranges and features a port suitable for non-aggressive dry gases as a reference pressure for the measuring cell. The Series 41X capacitive pressure transmitter from Keller combines a ceramic measurement cell for low pressure ranges with the µP electronics of the digital series 30 transmitter. The pressure values from the signals of the pressure and temperature sensors are determined by polynomial compensation. The values can be displayed and stored on a PC via an RS485 interface and programming can also be carried out. Analogue outputs are scaleable within the sensors range using the CC30 software and options are available for 4-20mA or 0-10V.