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瑞軒電子科技(上海)有限公司>>DAYTRONIC>>200serise>> MODEL2170MODEL2170Strain Gage Meter

MODEL2170Strain Gage Meter

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更新時間:2017-09-18 13:12:29瀏覽次數(shù):476

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These Digital Panel Meter (DPM) models serve as high-sensitivity monitors and controllers for use with load cells, strain gages

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MODEL2170Strain Gage Meter、MODEL2170Strain Gage Meter、

These Digital Panel Meter (DPM) models serve as high-sensitivity monitors and controllers for use with load cells, strain gages, and other microvolt input signals where high accuracy and stability are required.

The Model 2170 uses standard six-wire connection to load cells, where the sense lines are separate from the excitation lines. (Standard four-wire cabling, where the excitation and sense lines are tied together, can also be accommodated.) By eliminating effects due to variations in lead resistance, this configuration allows long cable runs in outdoor environments with temperature extremes.

The "X" version (Model 2170X) allows custom scaling, as specified by the user at the time of order (specify minimum input value, minimum displayed reading, maximum input value, and maximum displayed reading). Contact the factory for more details.

When used directly as a DC microvoltmeter, either of these instruments can provide sensitivity down to 20 mV full-scale with 1 µV resolution. With a digital multiplier of five, 99,999 counts (selectable fixed zero or active least significant digit) can be displayed with a sensitivity of 0.2 µV per count. (In this case, a moving average filter with a time constant of 1.2 sec or greater should be selected.)

When used as a load cell meter, the 2170 or 2170X allows scaling for direct readout in pounds, kilograms, PSI, or other desired engineering units. Scaling can be via front-panel push buttons or computer commands. Zero may be set from -99,999 to +99,999, and range (i.e., span) may be scaled from 0 to ±99,999. Digital scaling and calibration eliminate zero and span drift associated with potentiometers in non-microcomputer based meters.

An isolated 10 VDC excitation supply can provide up to 120 mA of current to power up to four 350-? load cells in parallel (the excitation and sense points of the four bridges are connected in parallel through a summing box). The meter can be set to operate in a ratiometric mode to eliminate errors due to supply variations. With standard six-wire connections, the 2170(X) also compensates for variation in resistance of the transducer leads, thereby allowing long cable runs.

The strain gage meters allow easy setting of scale and offset through either the coordinate reading method or the manual coordinate method (explained under Digital Panel Meters (DPM’s)).

The auto-tare function provided by all 2000 Series DPM's is very useful when the strain gage meters are used in weighing applications, as in the first two applications listed above. Here, the displayed value is set to zero to subtract out the weight of an empty container. This function may be controlled by an external push-button contact closure or by a logic signal to the rear of the meter

As with all 2000 Series DPM’s, the peak value of the input signal is automatically captured and may be displayed via front-panel push button or a control signal received at the rear connector (since the last meter reset). For a typical peak capture application, see Using Peak Capture to Test Wire Tensile Strength. Data readings and outputs can be separay selected to be either filtered or unfiltered. See Digital Panel Meters (DPM’s) for a full description of these and other standard DPM features.

2000 Series options applying to the RMS voltage meter include

  • Isolated Relay Outputs
  • Isolated Analog Output
  • RS232 or RS485 Interface
  • BCD Digital Interface
  • Low AC/DC Power

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