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Automatic Lap Controller
ALC-2120 Data Sheet


Additional Features

System Description

The Model ALC-2120 is a microprocessor based automatic lap controller. The ALC-2120 system controls the lapping and polishing of piezoelectric materials by monitoring their resonant frequencies during lapping, then terminates the process after the target frequency has been achieved. Up to twenty, user programmable lapping profiles can be stored for quick setup. The ALC-2120 controller injects a sweep frequency signal through an electrode mounted in one lapping plate. As crystals pass the electrode, the ALC-2120 observes the resonant responses and automatically stops the lap at target frequency. The ALC-2120 has evolved from a generation of Transat controllers which have earned a reputation for performance and reliability. This system can alternately control 2 lap machines. When target frequency is reached on one, monitoring automatically switches to the other. The frequency "Spread" display indicates out of process conditions. Automatic signal loss detection deactivates the system to a safe "off" condition. Probe and cabling options provide flexibility for either 2-way or 4-way lapping configurations.

Frequency Range1-95MHz
Accuracy+/- .1%
Display type5 digit, Frequency & 3 digit, Spread, LCD display
Lap control1 or 2 laps
Enclosure typeNEMA 1
Power requirements100/115/215/230VAC, 15W, 50/60Hz.
Dimensions (LxWxH)29cm x 29cm x 12cm
Weight4.5 Kg.

Ordering Information
Part# 00013756:ALC-2120 controller
Refer to the "ALC Accessories" data sheet for ordering and selection criteria of the probes, electrodes, mounting plates and slip rings.

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