Variable Resistor Module simulates PT100 and PT1000 RTDs.

Press Release Summary:

Combining fine and coarse control mechanisms with calibration system, 18-channel PXI Model 40-262 provides resistance setting resolution of better than 10 mW over entire resistance range and accuracy of better than 0.1% for all resistance settings. Requested resistance value is provided by use of resistance calls to module. Calibration port can be used to calibrate resistor channels while unit is connected to UUT in test system using external DMM.

Original Press Release:

New High Accuracy Resistance Temperature Detector (RTD)Simulator

Clacton on Sea, UK, February 8th 2008,-Pickering Interfaces is expanding its range of PXI products with the introduction of the high accuracy Resistance Temperature Detector (RTD) simulator. The 40-262 is an 18 channel variable resistor module designed to simulate the operation of PT100 and PT1000 RTD's with unprecedented resolution and accuracy in the PXI form factor. The 40-262 provides a resistance setting resolution of better than 10 mW over the entire resistance range and an accuracy of better than 0.1% for all resistance settings, allowing RTD's to be simulated with great accuracy. The 40-262 uses an innovative (patented) design principal that combines fine and coarse control mechanisms in combination with a calibration system to achieve its excellent performance. The requested resistance value is simply provided by the use of resistance calls (in ohms) to the module instead of the alternative approaches which are based on setting patterns of relay settings. According to David Owen, Business Development Manager for Pickering Interfaces, "This approach saves users considerable effort in simulating variable resistance devices, users can simply implement an interface to the simulator based on the known resistance versus temperature curve for the their chosen sensor. The 40-262 achieves this with an accuracy that is at least an order of magnitude more accurate than that achievable by other approaches used in PXI modules". The excellent accuracy of the 40-262 is easily supported when deployed in a system. The module includes a calibration port that can be used to calibrate the resistor channels while the unit is connected to the UUT in a test system using an external DMM. Other versions of the 40-262 RTD simulator can be supplied suitable for simulating other types of sensors. More about Pickering Interfaces Pickering Interfaces is a market innovator in signal switching and conditioning for a broad range of applications and architectures, with the largest range of switching cards in the industry for PXI, LXI, PCI, VXI and GPIB applications. Pickering Interfaces has provided solutions to both commercial and military applications. In addition, Pickering's range of instrumentation provides innovative test solutions to users and integrators of modular test systems. Pickering Interfaces operate globally with direct operations in the US, UK, Germany, Sweden, France , Czech Republic, and Engineering support in China, together with additional representation in countries throughout the Americas, Europe and Asia. Sales Contact for the US : Tel. +1 781-897-1710

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