Thank you for purchasing the Libra Feed Device. We understand that every minute and ration matter when feeding, and the Libra Feed from Central City Scale can assist you in this regard.

You can download the Libra Feed app from Google Play and the Apple App Store. Attach the Libra Feed to the front exterior of the mixer, ensuring the connectors point downward and are shielded from the elements. If there's a current indicator, install the Libra Feed in the exact location. Connect the cable from the mixer’s load cell junction box and a compatible power cord to the Libra Feed device. Tidy up any excess cabling.

The design supports 12V, similar to the traditional indicator model 640.

Please use the power cord only.

12 Volt Power Cord White Wire = (+)

Black Cord = Ground = (-)

Once installed, your Libra Feed and mobile devices must be paired to communicate. Download the app from the App Store or Google Play by searching for “Libra Feed.” Ensure the Libra Feed is downloaded.

Also, ensure Bluetooth has been enabled in the device's main settings. Remember that a specific app's Bluetooth availability can be disabled after a significant software update.

Pairing is done directly through the app Settings tab and NOT through the general 444 smartphone/tablet settings.

1. Bring the mobile device to the Libra feed device and launch the Libra feed app.
2. Select the Settings tab in the app and make sure that Primary Display is chosen for the main mobile device in the mixer. Pair a remote display only AFTER the primary display has been paired.
3. Select the Mixers tab.
4. Tap + to add the mixer equipment.
5. Name the mixer, select how you would like the weights displayed (1lb, 5lb, 10lb, etc.), and tap Done to begin the automatic pairing process.

The Primary Display device possesses the capability to establish a remote-control password, thereby enabling remote displays to access live weight data and manage the loading of the mixer from their mobile devices, whether situated at the loader or within range. The default password is set to 00000, and all remote displays that successfully pair will be granted remote control access, unless modifications are made to this setting on the primary display device.

If you have problems connecting to the Libra Feed device, please ensure each of the following in sequence:

1. The power cable is functioning and installed properly.
2. Bluetooth is enabled in your smartphone/tablet settings.
3. The Bluetooth icon is visible in the status bar at the top of your device. If not, reboot the mobile device. (swipe down to access the new menu; it is no longer visible on the newer version).
4. Ensure your Libra Cart device is selected from the list of Paired Devices in the Mixers tab of the Libra Cart App (tap to select).
5. The Bluetooth icon is black to indicate that the pair are actively communicating. If not, delete the paired device and re-pair it. (The Bluetooth icon is no longer visible in newer versions).
6. In the Libra app settings for the primary mobile device, Remote Mode is set to OFF; it is ON for mobile devices acting as remote displays. (The Primary Display should be highlighted).
7. There are no other mobile devices actively controlling the Libra Feed device.

If issues continue, disconnect the power cable from the Libra Feed device, wait 30 seconds, and reconnect it. (Ensure you notice a flashing light above the “Bistrata” logo. The light should flash every 10 to 12 seconds.)

The simplest way to reestablish a Bluetooth connection is to open the Mixer tab in the Libra Feed app and swipe left on the row of the device name. This will reveal a delete button. Tap delete and then press the + button in the upper left corner to repair the connection. (Continue with the example on the next page.)

All load cells installed on the mixer must possess identical sensitivity-to-capacity ratios (sensitivity/capacity). This condition applies provided that all load cells are of the same model; otherwise, verification should be conducted.

Please identify and document the calibration number of your current indicator, which corresponds to the Rated Capacity (lb), and apply 0.40 mV/V as the designated Sensitivity. It is advisable to refer to the existing indicator's user manual or consult ccscales.com for assistance in retrieving the calibration number for certain indicators.

In all other cases:

Please read and record the Sensitivity (Rated Output) and Rated Capacity (Rated Load) from any one load cell on the mixer. Subsequently, multiply the Rated Capacity by the TOTAL number of load cells on the mixer. Without specifications, a reasonable initial value is a Sensitivity of 0.40 mV/V and a Rated Capacity of 8000 lb, multiplied by the TOTAL number of load cells on the mixer.

Note: Topcon was previously referred to as Digi-Star. If it is observed that, following the application of the .4 method, the scale displays a reading of half, for instance, the most rational course of action would be to double the rated capacity number. Regardless of the ratio, one may multiply it; accordingly, one effective verification method involves utilizing a known human weight to suspend from the side or any area of the wagon that facilitates safe weight verification. Furthermore, should an individual weigh 200 lbs and the scale registers 100 lbs, it is logical to double the current rated capacity while maintaining the .4 for sensitivity and the calibration factor at 1.000.

Upper Display: Shows the net weight (gross weight minus the tare reference weight) on the mixer.

Lower Display: Shows the gross weight on the mixer.

Loading (New Batch): The upper display shows the amount of the ingredient that remains to be loaded in the mixer from the selected ration.

Weighback: The upper display shows the amount of way back/feed refusal that is being picked up from a pan and loaded into the mixer.

Feeding (Unloading): The upper display shows the amount remaining that has to be fed (unloaded) to a pen in the selected feed group

Main Keys

Tare: Sets a reference weight based on the subsequent readings (net weight).

Clear: Clears the tare reference weight.

Timer: This allows a countdown mix time to be entered (HH:MM:SS). Selecting the timer while running allows it to be modified or canceled.

Selected Ingredient: While loading, this shows the amount of an ingredient loaded into the mixer out of the total expected for the chosen ration.

Name of Mixer/Current Selected Ration (when loading): Tap the mixer name and scroll to disconnect from the Libra Feed device or connect to another mixer. This displays the mixer's current weight. When loading, it shows the total amount of all ingredients loaded compared to the expected total for the selected ration.

Selected Feed Group/ Selected Feeding: Select the feed group or feeding name to scroll and change the chosen feed group and feeding. Make sure the correct feed is selected on the device before loading. This shows the amount fed (unloaded) to that pen during feeding.

Selected Operator: Tap the operator's name to scroll and change the selected operator period. To add a new operator, navigate to the Operators tab.

Load—New Batch: The mixer begins loading and mixing the ration for the selected feed group. Either the primary display (main device) or remote displays with remote control access can operate the mixer's loading with ingredients from the mobile device within range.

1. Tap and select the correct feed group/feeding.
2. Tap Load (on the primary or remote display) to choose between New Batch or Weighback. If the mixer has a weight, you can include ingredients or weight.
3. Ensure the correct feed group/feeding is selected and tap Enter.
4. Begin loading the first ingredient displayed in the ration.
5. Tap Next to load the next ingredient in the ration.
6. Tap End to complete.

Load – Weighback (Less used): Allows feed refusal to be reintroduced into the mixer as part of the next ration, considering each ingredient. Wayback will be an option only after a ration has been fed to at least one pen.

1. Tap the display tab and then tap load.

2. Select Weighback for fill type.

3. Select a pen to load the weighback from.

4. Tap Done.

5. Begin collecting and loading the refusal into the mixer from the selected pen.

6. Tap End to complete.

Feed: Begins feeding (unloading) to the selected feed group.

1. Tap the Display tab and then tap Feed (from primary display only).
2. Begin feeding the first pen in the feed group.
3. Tap Next to feed the next pen in the feed group.
4. Tap End to complete.

Adding New Ingredients

1. Select the Rations tab and then tap Ingredients.
2. Tap + to add a new ingredient.
3. Enter ingredient name, mix time (optional), and the dry matter % (optional).
4. Tap Done to save.

Editing Ingredients

1. Select the Rations tab and then tap Ingredients.
2. Tap to select the ingredient to edit.
3. Tap Edit to edit the name, mix time, and dry matter % for that ingredient.
4. Tap Done to save.

Creating a Ration

1. Select the Rations tab and then tap Rations.
2. Tap + to add a new ration.
3. Enter the ration name, optional final mixing (HH:MM:SS), lb (or kg) per head, and tap Done on the keyboard.
4. Tap Add Ingredient to scroll and select from the list of ingredients.
5. Enter a daily amount for the selected ingredient and the units of measure.
6. Add or edit the individual mixing time for that ingredient.
7. Tap Done to save the ingredient to the ration.
8. Tap Done to save the new ration.

Overall Dry Matter % / Water (auto adjust)

When adding a new ration or editing an existing ration, the overall dry matter percentage will be displayed based on the dry matter percentage for each ingredient in that ration.

You can modify the overall dry matter to a specific percentage by adding an automatically adjusted water ingredient as follows:

1. Select Rations in the tab bar and then tap Rations.
2. Tap + to add a new ration or Edit to edit an existing ration.
3. Tap Add Ingredient and scroll to the bottom to find the Water (auto adjust) ingredient.
4. Enter an overall dry matter % for the ration.

When mixing, the Libra feed app will call for enough water to reach the desired overall dry matter percentage.

Manual Add

The manual ad switch can be enabled for ingredients with weights too small to be individually weighed by the mixer.

Editing a Ration

1. Select the Rations tab and then tap Rations.
2. Tap to select the ration to edit.
3. Tap Edit to edit the ration name, final mix time, and lb (or kg) per head, OR add new ingredients, reorder ingredients in the ration.
4. Tap Done to save.

Editing an Ingredient in a Ration

1. Select the Rations tab and then tap Rations.
2. Tap to select the ration to edit.
3. Tap Edit to view the list of ingredients in the ration.

1. Tap to edit the ingredient in the ration.
2. Tap Done to save.

The in the Rations tab

forms an email with a .CSV file attachment that contains the As Fed and Dry Matter Intake Rations Summary data. This file can be opened with Excel or another spreadsheet software package.

Ensure you understand how to install email on the iPad. Please use a larger email service provider like Yahoo, Google, Live, etc.

Follow these steps when adding an email account to the iPad:

1. Tap Settings
2. Tap Mail
3. Add Account
4. Select from the provided email companies, preferably Google.
5. Fill out the address and password, then press next.

If you have trouble emailing out the data, try as follows:

1. Tap Settings

2. Tap Email, then tap again on the specific email that is not working. The Mail App will ask if you want to delete the Email Account. Delete the Email address.

3. Repeat the “Add Email” steps to add the email to the Email App.

Adding a New Pen

1. Select the Pens tab and then tap Pens.
2. Tap + to add a new pen.
3. Enter the pen name, head count, and adjust feed % if necessary (optional).
4. Tap Done to save.

Feed Adjustment %

Adjusts the lb/head (or kg/head) for a specific pen in a feed group without changing each ingredient amount in a ration.

Bunk Reading

Subtracts an amount entered for a specific pen from the next load to account for feed refusal.

Editing Pens

1. Select the Pens tab and then tap Pens.
2. Tap to select a pen to edit.
3. Tap Edit to edit the name, head count, feed adjustment %, and view the Adjusted Total, Adjusted Rate in Feed Groups, and the Recent Fed Averages.
4. Tap Done to Save.

Adding a Feed Group

1. Select the Pens tab and then tap Feed Groups.
2. Tap + to add a new feed group.
3. Enter the feed group name and then tap Next on the keyboard.
4. Select a ration for the feed group.
5. Tap Add Pen to add pens to a Feed Group.
6. Tap Add Feeding to create a new feeding (optional).
7. Tap Done to save.

Feedings

A feeding splits a daily ration for a feed group into multiple feedings each day. The way feedings function varies based on the feeding mode (daily or standard), which can be set in the settings tab. (Standard Mode Recommended)

In daily mode, earlier feedings from the same feed group are subtracted from new batches. Therefore, the feeding percentage represents the portion of the daily ration amount that will be achieved after feeding.

A sample feeding schedule under daily mode, where half is fed in the morning and half in the evening, would look like this: Morning 50%, Evening 100%.

In standard mode, batches are treated independently, meaning the feeding percentage represents the fraction of the daily amount used during feeding. (Recommended)

The same feeding schedule of half in the morning and half in the evening would be: Morning 50%, Evening 50%.

Editing a Feed Group

1. Select Pens on the tab bar and then tap Feed Groups.
2. Tap to select the feed group to edit.
3. Tap Edit to edit the name, associated ration, pens, pen order, and feedings.
4. Tap Done to save.

The in the Pens tab

forms an email with a .CSV file attachment that contains the As Fed and Dry Matter Intake Rations Summary data. This file can be opened with Excel or another spreadsheet software package.

Viewing Batches

1. Select the Transactions tab and then tap Batches.
2. Tap to select the batch to view. View the Batch Summary and Ingredient Transactions included in this batch.

Editing Batches

1. Select the Transactions tab and then tap Batches.
2. Tap to select the batch to edit.
3. Tap Edit to edit the transaction.
4. Tap the icon beside the ingredient transaction you wish to edit. The change in weight between the original and desired weights for this transaction is shown.
5. Select Increase/Decrease Batch Weight to change this transaction and the actual batch weight by the difference weight. Select Keep Batch Weight to transfer the difference weight to another ingredient transaction without changing the actual batch weight.
6. If Keep Batch Weight was selected, select the ingredient the difference weight should be transferred to.
7. Tap Done to save.

Adding an Ingredient Transaction

1. Follow the Editing Batches instructions above to access the ingredient transaction edit.
2. Tap Add Ingredient Transaction to select and add an ingredient.
3. Tap the icon beside the ingredient to add a weight for this ingredient transaction.
4. Select Increase/Decrease batch Weight to change this transaction weight and the actual batch weight by the difference weight. Select Keep Batch Weight to transfer the difference weight to another ingredient transaction without changing the actual batch weight.
5. If Keep Batch Weight was selected, select the ingredient to which the difference weight should be transferred.
6. Tap Done to save.

Viewing Feedings

1. Select the Transactions tab and then tap Feedings.
2. Tap to select the feeding to view. View the Feeding Summary and Feeding Transactions included in this feeding.

Editing Feedings

1. Select the Transactions tab and then tap Feedings.
2. Tap to select the feeding to edit.
3. Tap edit to edit the transaction.
4. Tap the icon beside the feeding transaction you wish to edit. The change in weight between the original and desired weights for this transaction is shown.
5. Select Increase/Decrease Feeding Weight to change this transaction weight and the total weight fed by the difference weight. Select Keep Feeding Weight to transfer the difference weight to another feeding transaction without changing the total weight fed.
6. If Keep Feeding Weight was selected, select the pen to which the difference weight should be transferred.
7. Tap Done to save.

Adding a Feeding Transaction

1. Follow the Editing Feedings instructions above to access the feeding transaction edit.
2. Tap Add Feeding transaction to select and add a pen.
3. Tap the icon beside the pen to add a weight for this feeding transaction.
4. Select Increase/Decrease Feeding Weight to change this transaction weight and the total weight fed by the difference weight. Select Keep Feeding Weight to transfer the difference weight to another feeding transaction without changing the total weight fed.
5. If Keep Feeding Weight was selected, select the pen to which the difference weight should be transferred.
6. Tap Done to save.

1. Bring the mobile device to the Libra Feed device and launch the Libra Feed app.
2. Select the Settings tab in the app and ensure Primary Display is selected for the one main mobile device in the mixer. Pairing a remote display should only be done AFTER the primary display has been paired.
3. Select the Mixers tab.
4. Tap + to add and configure the mixer equipment.
5. Name the mixer, select how you would like the weights displayed (1lb, 5lb, 10lb, etc.), and tap Done to begin the automatic pairing process.

The primary display can set a remote control password to allow remote displays to view live weights and control loading the mixer from their mobile device (from the loader or within range). The password is defaulted to 00000 and all remote displays that pair will have remote control access, ubless this is changed on the primary display device.

Unpairing

1. Select the Mixers tab.
2. Tap the name of the mixer.
3. Swipe left or tap on the Weight Device Paired line and select Unpair.

Deleting a Mixer

1. Select the Mixers tab.
2. Swipe left on the line of the mixer name and select Delete.

Load Cell Configuration

All load cells installed on the mixer must have identical ratios of sensitivity to capacity (Sensitivity/capacity). This is true if all load cells are the same model and should be checked otherwise.

Using the calibration number from an existing indicator:

Find a note the calibration number of your existing indicator as the Rated Capacity (lb), and use 0.40 mV/V as the Sensitivity.

In all other cases:

Read and note the Sensitivity (Rated Output) and Rated Capacity (Rated Load) from anyone load cell on the mixer. Multiply the Rated Capacity by the TOTAL number of load cells on the mixture. If specifications are unavailable, a good starting point is a Sensitivity of 0.40 mV/V and a rated capacity of 8000 lbs multiplied by the total number of load cells on the mixer.

Configuration

1. Ensure the Libra Feed device and app are paired and connected.
2. Ensure units (lb, kg) are set to those of the Rated Capacity found previously.
3. Select the Device tab and enter the Sensitivity and Rated Capacity noted previously.
4. Enter the Calibration Factor as 1.0.
5. Tap Save Settings.

Calibration

1. Ensure the Libra Feed device and app are paired and connected.
2. Ensure the mixer is empty and on level ground.
3. Select the Display tab and tap Tare.
4. Load the mixer with a known weight and note the reading from the large display. Larger weights provide higher precision.
5. Select the Device tab and enter the known weight as the Certified Reading, and enter the noted amount as the Mixer Reading.
6. Tap Calculate to determine a new Calibration Factor.
7. Tap Save Settings.

Smoothing

Smoothing will slow down the weight display by adding extra filtering it is advised to begin with a level 3 smoothing and advance as needed.

Firmware

Just as the Libra Feed app can be updated through the App Store, the software that runs on the Libra Feed hardware device can also be updated. To check the availability of new firmware for the device, tap update Firmware. If a new version is available, the app will guide you through the update process.

Restoring the Device

In the unlikely event that you need to restore the firmware to factory defaults, tap restore device.

Sending Diagnostics

Tapping Send Diagnostics will send Agrimatics an email with all weight measurements collected by the Libra Feed app. This data will help us tune future versions of the app, and help diagnose any issues to ensure you experience the best performance possible. When sending diagnostics, please add some descriptive notes to the e-mail to ensure that we understand the problem or the specific need.

Dry Matter/ As Fed

Set the app to build and feed rations based on dry matter or wet weight. Tap to select the desired mode.

If dry matter is selected, the dry matter percentage for each ingredient can be changed by editing the selected ingredient or by choosing the water drop icon on the main display tab.

Imperial/Metric

Set the app to display amounts in either imperial or metric units. Tap to select the desired mode.

Daily Feeding

In daily mode, earlier feedings from the same feed groups on the same day are subtracted from new batches, so the feeding percentage is the fraction of the daily ration amount that will be reached after performing the feeding. A sample feeding schedule where half is fed in the morning and half in the evening under daily mode would be: morning 50%, evening 100%

Standard Feeding

in standard feeding mode batches are treated independently, so the feeding percentage is the fraction of the daily amount that will be fed during feeding. The same feeding schedule of half in the morning and half in the evening would be, morning 50%, evening 50%.

Primary Display

The primary display stores and displays all the feed data. Only one mobile device can be the primary display device in the mixer's cab. Tap to select the desired display before pairing to the hardware.

The primary display can set a remote control password in the mixers tab to allow or prevent remote displays from viewing live weights and controlling loading the mixer from their mobile device, from the loader, or within range. The password is defaulted to 00000, and all remote displays that pair will have remote control access unless this is changed on the primary display device.

Remote Display/Remote Control

Remote displays can view live weights and control loading the mixer from their mobile device, from the loader, or within range. Remote displays operate only while the primary display is connected. Tap to select the desired display before pairing it with the hardware.

The primary display device can set a remote control password in the mixers tab to allow remote displays to view live weights and control the loading of the mixer from their mobile device, from the loader, or within range. The password is defaulted to 00000, and all remote displays that pair will have remote control access, unless this has changed on the primary display device.

Prevent Offline Loading

When offline loading is prevented, loading is prevented if the device has not synced with the Agrimatics cloud service within the configured offline grace period.

Adding a New Operator

1. Select the More tab and then the Operators tab.
2. Tap + to add a new operator and type in a name.
3. Tap Okay to save.

Tap the name and the operators tab or tap the operator name on the main display to scroll and switch between operators.

Getting Started With The Cloud

To start with Agrimatics Cloud, we highly recommend establishing a Gmail account your organization can use as its primary email. To create an email account, search for "create a Gmail account" on Google and adhere to the instructions on the appropriate webpage.

For optimal results, it is suggested that you set up the account on a computer. If you prefer to use a new Gmail account, please ensure that you log out of your current Gmail account on your browser, mainly if Google is your default browser.

Agrimatics.com Sign in or Sign up

From the internet browser, search for agrimatics.com and select “CLOUD SERVICE LOGIN.”

Next, click “Sign in with Google” on the “Cloud Service Login” page.

Click on the desired Gmail account to be linked with Agrimatics Cloud, then Click on the brown Libra Feed App when taken to the “Select Your App” screen.

Signing in on a Mobile Device

From the home screen, locate the “Users” tab and click on it. When the screen first appears, a help box will appear explaining how to generate an eight-character code to sign into the first device. Read the description and click “Got It!” once finished.

(Notice the example has five user accounts; this is for troubleshooting; ignore the additional user accounts).

This set of instructions aims to help the user get started with the program and eventually lead to the purchase of Pro Licenses if desired.

Once you enter the “Users” screen, notice the “Users/Mobile Devices” heading. Below the heading is the Name, and then, going from left to right, the Google Account, Role, and App Connection.

Notice in the first row that the Name is Grain Cart 1 or Mixer 1, the Google account is matth@ccscales.com, the role is Web/Mobile, and the App Connection is red with a diagonal line going through a computer and phone symbol.

To the right of the disconnected computer and phone symbol is a pencil, a small tablet, and a trash symbol. The “Pencil” allows the user to edit the username, Google account, and role.

The “Tablet” symbol to the right of the “Pencil” is the desired place to click next. The caption of the “Tablet” is “Manage mobile device.” Click on the Tablet, and a new screen will appear. The presented code will be used for the iPad or mobile in the “Cloud” section of the Libra Cart app.

Switch from the Computer to the iPad Libra Feed App.)

Select “Enable Backup” to get to the eight-character code entry popup.

Pictures will guide the user through the following steps on the next page.

1. Enable backup by pressing the words, and a Join “Account Message” will appear.
2. Enter the eight-character code in the “Join Account box.” (From the webpage)
3. The account should begin to synch data across the iPad app and the computer webpage.

Note: No bu message will appear on the Libra Feed App. The grain cart and mixer app use the same users for the Feed app.

Notice the “Role” of Web/Mobile. There can only be one Web/Mobile connection, the primary connection between the computer webpage and the Libra Feed iPad app.

If you see dramatic weight differences from load to load and calibration has not helped, it is time to weigh all around the equipment. (if possible). Having the equipment fully loaded provides the best detail. The following pictures will guide you on how to weigh around on a grain cart. Not all equipment is the same and requires maneuvering to achieve this task.

ATTENTION!!! You can calibrate endlessly and still not solve the problem if there is a defective weight bar or a mechanical issue. Follow these steps, which should help get you back on the right track.

Example: The 1st weight is 180lb, location, Hitch. The 2nd Weight Right Axle is 180lb, and the 3rd Left Axle is 180lb = Good.

Example: The 1st weight is 120lb, location, Hitch. The 2nd Weight Right Axle is 180lb, and the 3rd Left Axle is 180lb = Problem.

Additional Weighing Problems that might indicate a load/cell weight bar problem.

1. - - - - (dashes can indicate) the primary display is in remote, or there is a connection problem
2. If the display stays on “0” and does not move, this typically indicates a problem with the weigh bar.
3. When the Libra box is disconnected from the weigh bar cable, it is customary to drift to a high weight reading. It can be as high as 1 million or several hundred thousand lbs.
4. Check the battery voltage, disconnect, and repair the connection to see if this resolves the issue. Then, continue to follow the instructions below.

Possible problems

Ensure the weigh bar/load cell is installed correctly, i.e., right side up of the recommended position. Most bars should be facing up and have a sticker marked TOP. If this is not the case, the operator will be informed before installation.

The bar that weighs the lightest is usually where the problem is located.

There are hundreds of combinations of weigh bars/load cells, and the more information we are provided, the faster we can get you up and running.

Things to Know

Brand of Weigh bar/ Load Cell and Connector Description Connector?

Make and Model of Equipment?

What is the part number of the weigh bar/load cell?

Further Testing

Ohms Test

The next step is to identify the brand of the weigh bars/load cells. If the brand is Avery-Weigh-Tronix, it will likely be a 5-pin system. If the brand is Digi-Star, it will likely be a 4-pin system. The EZ Mate connector is usually a variation of Digi-Star.

If a multimeter is handy, the resistance of the weigh bar can be checked. Look for the ohms Ω symbol on the multimeter. Ohms will be used to measure the resistance of the weight bar.

Table I: Color Code for Digi-Star hard-wired junction box

Table II: Color Code for Weigh-Tronix (Weigh-Tronix uses 5Pin (Plug) and Hardwired J- Boxes

Table III: Color Code for EZ Mate

Place the notch at the 12 o’clock position to begin.

A Drifting Scale

When the display drifts all over the place and does not seem to settle on weights, it is essential to determine which bar or load cell is causing the problem.

The Process of Elimination

1. Unplug all but one weigh bar/ load cell from the junction box (this will be continued on the next page).

5 Pin Junction Box with Connectors. Spring-Loaded Junction Box

Available with numerous ports. With open wires that plug into the

This example has 3.A summing board. To do the process

of elimination with this junction box

it is best to unbolt and lay flat. This

method works best to allow for a

a better angle to disconnect

the weigh bars/ load cells.

1. With the first weigh bar/load cell connected, zero out the scale monitor. Next, observe if the scale remains steady at zero. (A little shift in weight is acceptable). If the scale remains on a steady zero, this bar is okay, and you may leave it connected to the junction box.
2. Move to the next weigh bar/ load cell and see if it drifts after zeroing out the display. If the bar/ load cell drifts, set it aside for further testing.
3. Move to the next weigh bar/load cell and repeat step 2 to see if there is a drifting weight. 5. If you find a drifting bar, administer the Ohms Test.

Ensure the wires are accessible from the junction box when testing the spring-loaded style.

Additional Testing

The key is to tap on the sensor, which can cause vibration. If the scale drifts after zeroing, it could be due to a delaminated strain gauge requiring a new weigh bar.

1. Zero the scale and Tap on the Weigh Bar/ Load Cell with a rubber mallet to not damage the internal electronics
2. If the scale drifts, there is a
3. Problem with the Load Cell/ Weigh Bar