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Porta-tronic Installation Guide 

1. Introduction 

 
The scale must not be loaded beyond its capacity. Avoid areas where the scale might receive 
damaging side impacts from wheels, forklift tines, etc., or shock damage from falling objects. 

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N

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 1/2” 

wrench 

 

  Small screwdrivers (regular and Phillips) 

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U

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p

p

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Remove packing material and inspect scale for any visible damage caused during shipment. If 
damage did occur, notify your freight carrier immediately to register  a claim. 

Depending on design and packing, some scales are shipped fully assembled. On others, the load 
feet and the anchor plate option are shipped separately via UPS. 

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1.  Set the scale or cart on its wheels in an upright position and lock wheel brake(s).  
2.  Mount the column to the base or cart with hardware provided.  
3.  Mount the indicator to the top of the column with hardware provided. 
4.  Connect the load cell cable to the indicator. Refer to the table below for wiring color codes. 

Note: Casters with grease nipples should be serviced regularly, especially when the scale 
is used in a wash-down environment.

 

 

 

Celtron LOC/LE  HBM PW12 Home Run Cable 

(+) Excitation 

Green 

Blue 

Red 

(-) Excitation 

Black  

Black 

Black 

(+) Signal 

Red 

White 

Green 

(-) Signal 

White 

Red 

White 

(+) Sense 

Blue 

Green 

Blue 

(-) Sense 

Brown 

Gray 

Brown 

Shield Clear 

or 

Yellow 

2. Calibration 

1.  If the indicator and Porta-tronic were calibrated at the factory, the scale is now ready for use. 

If the indicator came separately, the scale must be calibrated to the indicator. Refer to the 
indicator’s manual for calibration instructions. 

2.  After calibration has been completed, take known weight (25% of capacity) and check each 

corner. Place weight between center of scale and each corner one at a time as shown 
below. Use the same calibrated weight in each corner. 

3.  To adjust corner weight readings, use the trim pot designated for that corner which is 

numbered the same as the corner you need to adjust. 

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