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Tricor systems inc 921A displacement force test station
Tricor Systems Inc. Model 921A Displacement Force Test Station
115/220 Volts AC, 50/60 Hz, 230 VA
Used, powers up, passes self test, needs to be calibrated
The Model 921A Displacement Force (DF) Test Station operation is similar to the highly acclaimed Models 951A and 961A Test Stations. The high accuracy and many of the features of the 951A and 961A have been incorporated in the 921A. Testing on the 921A is performed using remote test fixtures similar to the 961A. The remote operation permits testing a wide variety of components/ devices and also allows the 921A to operate as part of a fully automated test line. Keyboards, springs, switches and other components requiring measurement of displacement, force, or resistance (one channel optional) can be tested manually, individually or with automatic feed. The 921A is also ideally suited for engineering investigation and new product development.
When interfaced with a personal computer (PC), the resulting test data can be viewed, analyzed, and printed. The 921A stores test criteria for one test configuration. To assure simplicity of operation and efficient, effective, error-free use by anyone, the test station displays operator prompts and provides a minimum of operator controls: a MODE switch and a TEST switch.
Three operating modes are featured:
1. Local a pass/fail indication is provided during standalone operation, test results are not stored
2. PC a PC interfaces with the test station and is used to configure device test criteria and view stored test results
3. Engineering test data is logged for every 0.0001 inch of travel and is available for viewing at the PC.
The 921A features a precision lead-screw drive mechanism used to trip the device under test which serves to guarantee repeatability of results.
Prior to testing, the operator must perform a calibration cycle. Testing cannot be initiated until a calibration cycle has been performed.
The test sequence is initiated by pressing the TEST switch or externally by the PC. During the test sequence, sensor data is logged in 921A memory. Test data is then analyzed, parameters are calculated, and the results are compared with the configuration criteria to determine a pass or fail status. The PASS or FAIL indicator then illuminates. Upon completion of the test sequence, the 921A is ready to test the next device.
The 921A stores test criteria for one device configuration and up to 32 test results (PC operating mode) in non-volatile memory so that once loaded the station will retain the test criteria even upon power-down. Device configurations are identified by device part numbers. The operator s display indicates which device is currently being tested by displaying the part number of the device in the left-handed corner of the display.
* Power Requirements: 115/220 Volts AC, 50/60 Hz, 230 VA
* Test Cycle Time: 6 to 10 seconds typical
* Resistance Test Current: 10 mA standard
* Resistance Measurement Channels: One (Optional)
* Displacement Range: 6.25mm to 62.51mm (0.246 to 2.461 inches) standard
* Displacement Resolution: 0.00254mm (0.0001 inch) programmable
* Displacement Abs Accuracy: 0.00762mm ( 0.0003 inch) Maximum, 0.00254mm ( 0.0001 inch) Typical, 0.00762mm ( 0.0003 inch) Maximum, 0.00254mm ( 0.0001 inch) Typical (Related to free position)
* Force Range: 0 to 3.6kg (0 to 8 lb) standard
* Force Resolution: 1g (0.035 oz)
* Force Abs Accuracy: 0.25% of fsc maximum, 0.2% of fsc typical
* Force Repeatability: 0.1% of fsc maximum, 0.05% of fsc typical
* Resistance Range (Optional): 0 to 4 standard
* Resistance Resolution (Optional): 1 m
* Resistance Abs Accuracy (Optional): 0.25% of fsc maximum, 0.1% of fsc typical
* Resistance Repeatability (Optional): 0.1% of fsc maximum, 0.05% of fsc typical
