LMI Technologies G2 Manuel utilisateur
G2 Protective Cover
User Manual
15275.01.01_MANUAL_User_G2_protective_cover.pdf
G2 Protective Cover User Manual 2
G2 Protective Cover Quick Start Guide
The G2 protective cover is used on certain Gocator 2500 and Gocator 2600 sensors (see the list
below)to prevent scratches or breakage to the sensor's laser and camera windows. The protective
cover features replaceable windows and gaskets to provide secure and reliable protection.
For applications that rely on absolute measurements, LMI recommends applying scaling values to
the measurement outputs. For information, see Calculating and Applying a Measurement Scale on the
next page.
The protective cover's windows reduce light transmission by up to roughly 16%. If you are
adding a cover to an existing application, you may need to adjust the sensor's exposure.
The following table lists the supported sensors and available protective covers:
Description Part Number
Protective Cover for 2629, 2630 301275
Protective Cover for 2540, 2550, 2640 301276
Protective Cover for 2650, 2670, 2690 301277
Window service kit for Protective cover, qty. 5 301278
For detailed information on installing and configuring Gocator sensors, see the sensor user manual.
For information on reordering windows and gaskets, contact LMI.
G2 Protective Cover User Manual 3
Installing the Protective Cover
The protective cover is pre-assembled (cover, gaskets, and windows). Make sure that the sensor
windows and housing face are clean before installing the protective cover.
To install the cover on the sensor, use the provided screws. (The number of screws is model-
dependent.)
Calculating and Applying a Measurement Scale
Use the information in the following sections if you need to calculate and apply a scale to your
measurements.
Target and Mounting
LMIrecommends purchasing or manufacturing a gauge block for the procedure. The target's height
should be 50% to 75%of the sensor's measurement range. The width of the target should be less
than the sensor's FOVat mid-range. To determine an appropriate size for the target, see your
sensor's specifications in the sensor user manual.
You must securely mount the sensor above a stable surface.Because you must take two sets of
measurements, if the sensor moves between measurements, the results will be inaccurate. Mount
the sensor so that the surface you will scan (target or table surface) is in the upper half of the
sensor's measurement range.
G2 Protective Cover User Manual 4
You should install the protective cover without unmounting the sensor.
Collecting Height Measurements
You must collect measurements twice:before installing the protective cover and after installing the
protective cover. Do not change the sensor height between measurements.
To perform measurements for scaling calculation
1. Mount the sensor above a flat surface.
The sensor should be mounted so that the top of the target will be in the upper part of the sensor's
measurement range.
For more information, see Target and Mounting on the previous page.
G2 Protective Cover User Manual 5
2. Align the sensor to the flat surface under the sensor.
Gocator 6.x
On the Scan page, in the Alignment panel, click
Align.
GoPxL
On the Alignment page, in the Alignment section,
click Align Sensor... and follow the steps in the
alignment wizard.
3. Place the target in the sensor's field of view.
For important information on the target and its position in the sensor scan area, see Target and Mounting on
page3.
4. On the Scan page, set the sensor to Profile mode.
Gocator 6.x GoPxL
5. Capture a profile to make sure the target is in the sensor's field of view.
G2 Protective Cover User Manual 6
The Gocator 6.x interface is shown here.
Sensor profile: Target producing the profile:
6. On the Measure page, add a Profile Position tool.
Gocator 6.x GoPxL
Double-click the tool or drag and drop it to the space
to the right.
G2 Protective Cover User Manual 7
7. Place the tool's region on the top of the target's profile, resizing it if necessary to include only the top.
The Gocator 6.x interface is shown below.
8. Set the feature to Average and enable the Z measurement.
Gocator 6.x GoPxL
9. Enable recording.
Gocator 6.x GoPxL
G2 Protective Cover User Manual 8
10. Acquire 10 or more profiles, and on the Dashboard page (Report >Health page in GoPxL), make note of the
resulting average measurement for the Z measurement.
Gocator 6.x
GoPxL
11. Install the protective cover.
Be sure not to change the height of the sensor or otherwise move it.
For information on installing the cover, see Installing the Protective Cover on page3.
12. Re-align the sensor.
For instructions, see step 2.
13. Acquire 10 or more profiles and make note of the resulting average measurement for the Z measurement.
You should acquire roughly the same number of profiles as in step 10.
Collecting Width Measurements
You must collect measurements twice:before installing the protective cover and after installing the
protective cover. Do not change the sensor height between measurements.
To perform measurements for scaling calculation
1. Mount the sensor above a flat surface.
The surface should be roughly at the mid-point of the sensor’s measurement range.
For more information, see Target and Mounting on page3.
G2 Protective Cover User Manual 9
2. Align the sensor to the flat surface under the sensor.
Gocator 6.x
On the Scan page, in the Alignment panel, click
Align.
GoPxL
On the Alignment page, in the Alignment section,
click Align Sensor... and follow the steps in the
alignment wizard.
3. Place the target in the sensor's field of view.
For important information on the target and its position in the sensor scan area, see Target and Mounting on
page3.
4. On the Scan page, set the sensor to Profile mode.
Gocator 6.x GoPxL
5. Capture a profile to make sure the target is in the sensor's field of view.
G2 Protective Cover User Manual 10
The Gocator 6.x interface is shown here.
Sensor profile: Target producing the profile:
6. On the Measure page, add a Profile Dimension tool.
Gocator 6.x GoPxL
Double-click the tool or drag and drop it to the space
to the right.
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