Zhuhai Easson Measurement Technology Ltd.
Easson Measurement Technology Ltd. Always Committed to Quality, Technology & Innovation
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High Accuracy Push & Pull Structure Absolute Linear Encoder Glass Scale with Digital Readout
Product View
| VA10 | VA11 | VA12 | VA13 | VA20 | VA21 | VA22 | VA23 | ||
| Measuring Standard | Glass Scale - Grating period: 20μm (0.02mm) | ||||||||
| Optical Detecting System | Transmissive Infrared System: wave length 880mm | ||||||||
| Slide Carrier System | Vertical five bearings supporting system | ||||||||
| Resolution | 5μm | 1μm | 5μm | 1μm | 5μm | 1μm | 5μm | 1μm | |
| Measurement Travel | 50-1200mm | Every 50mm per length Specification | Not available | ||||||
| 1300-3000mm | Not available | Every 100mm per length Specification | |||||||
| Accuracy | 50-450mm | ±3μm - ±5μm | -- | ||||||
| 500-800mm | ±10μm | ±5μm | ±10μm | ±5μm | -- | ||||
| 1050-2000mm | ±10μm | ±5μm | ±10μm | ±5μm | -- | ||||
| 1300-3000mm | -- | ±10μm/m | |||||||
| Repeatability | 2μm (0.002mm) | ||||||||
| Hystersis | 3μm (0.003mm) | ||||||||
| Protection | IP 53 | ||||||||
| Power supply | DC 5V ± 5% | ||||||||
| Output Signal | TTL | TTL | 422 | 422 | TTL | TTL | 422 | 422 | |
Installation Dimensions
VA20 Series
Connector interface
Easson absolute linear encoder use Gold-plated pins to avoid poor connection and Anti-corrosion, it has a small PCB inside the connector which allow the VA series Absolute Linear Scale built in the Laser compensation data and directly connect to our LCD DRO, ensure the high measuring accuracy.
DSUB 9PIN
| PIN | TTL | 422A | ||
| Signal | Cable | Signal | Cable | |
| 1 | —— | —— | A- | Yellow |
| 2 | 0V | Orange | 0V | White |
| 3 | —— | —— | B- | Red |
| 4 | GND | GND | GND | GND |
| 5 | —— | —— | R- | Black |
| 6 | A | Yellow | A | Green |
| 7 | 5V | Red | 5V | Brown |
| 8 | B | Green | B | Blue |
| 9 | R | Brown | R | Grey |
Product Description
Advanced Optical Measuring System
Features:
1. VS20 Linear encoder using a double T-slot design, which is convenient for users to install and correct the scale body.
2. VS20 Linear scale can be connected to a positive pressure system, the protection level can reach IP65.
3. Linear Encoder has three reference mounting surfaces, which can flexibly fit to various types of machine tools.
VA scale has a small PCB inside the 9 PIN connector, the laser compensation data is store inside, with our LCD Digital display unit, the compensation data will directly load the ECF file (compensation file) into the DRO, accuracy up to ±2μm.
Aging Test
Easson Optical Linear Scale's reader head need to power on for 24 x 3 hours aging test before assemble,
make sure all linear scale's is reliable working for long time.
100% Laser calibration
All linear encoder glass scale are individually inspected and calibrated by our in-house laser interferometer to ensure measuring accuracy comply 100% with the specifications.