Easy way to test Process Loops

Loop-Mates are novel single-function low-cost pocket-sized units, designed for test and calibration of process loops. Simplicity of operation is their key, with no keypads or complicated menu selections. Engineers will be able to pick them up and get to work immediately. Just select 4-20mA or 10V loop, and TxSim, RxTest, RxSim or TxTest. The Loop-Mate1 is the simulator and acts as a source to provide loop signals of 4-20mA or 0 - 10V. No complicated selection of the output, just operate up/down buttons to increase or decrease the signal. There are seven set points: 0, 10, 25, 50, 75, 90 and 100%, each is indicated on a high brightness LED and an audible beep sounds on each change of output. Auto-stepping mode (adjustable rate) allows Loop-Mate1 to be left connected automatically stepping up and down the set points. This allows the engineer to move to another location to check (using Loop-Mate2) that the signal is arriving correctly and is within specification. Loop-Mate2 is a dedicated loop signal indicator, and is just as easy to operate. Once again the user selects the loop type, 4-20mA or 0-10V, and chooses whether the display is in direct units, or percentage of span. The LCD shows the signal to an accuracy of 0.05% either in milliamps, volts or percentage of span. Both devices have internal loop drive supplies that can be used to power the loop if required. The major advantage of using separate source and display units is that now both ends of the loop can be checked at the same time. Both transmitters and indicators can be tested and calibrated while connected in the process loop, or when removed from the loop. With an accuracy of 0.1% for Loop-Mate1 and 0.05% for Loop-Mate2, both are suitable for all process loop applications. Time Electronics plan to continue with the theme of simplicity of operation for a range of SensorMates. These will also be single function sensor simulators for thermocouples, PRTs, millivolt/milliamp and pressure. Each SensorMate is pocket-sized, easy to operate, and low-cost.

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