Weighmaster and technician licensing
Get licensed to weigh commodities or install scales, meters, or other devices
You need to be licensed to conduct most work involving weighing commodities and installing or repairing measurement devices. LA Revised Statute 3:4621 states , “No person may operate as a registered service agency, a registered service person, or as a weighmaster until he is licensed.”
Each license requires an exam, and no service person licenses will be issued without a passing exam score on file with our office. You only need to pass the exam once in your lifetime. You may take the exams as many times as you need to pass. The exam will be automatically graded, a certificate will be issued to you, and a copy will be sent to LDAF.
Types of technician licenses
What you want to work on* | License needed |
|---|---|
Mass flow meters | Mass Flow Meter Technician License |
Motor fuel devices | Petroleum Technician License |
Railroad track scales | Rail Scale Technician License |
Scales | Scale Technician License |
Taximeters | Taximeter Technician License |
*"Work on" means install, service, repair, test, or calibrate.
In order to work on all three scale categories (Categories 1, 2, and 3), you must take and pass both the scale technician and the rail scale technician exams.
The service agency registration fee is $100 per location.
Staying compliant
There are annual license fees. Click on the license type below for fee information. Renew your license online .
Licenses
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If you want to install, service, repair, test, or calibrate a commercial mass flow meter, you need a Mass Flow Meter Technician License.
The license fee is $65 per technician per year.
To apply
Prepare for the exam using the Mass Flow Meter Technician exam study guide .
Add the employee requiring a license to your USA Plants business account.
Pass the online exam .
If you want to install, service, repair, test, or calibrate a retail motor fuel device, you need a Petroleum Technician License.
The license fee is $65 per technician per year.
To apply
Prepare for the exam using the Petroleum Technician exam study guide .
Add the employee requiring a license to your USA Plants business account.
Pass the online exam .
If you want to install, service, repair, test, or calibrate a commercial railroad track scale, you need a Rail Scale (Heavy Duty) Service Technician License.
The license fee is $65 per technician per year.
To apply
Prepare for the exam using NIST Handbook 44 .
Add the employee requiring a license to your USA Plants business account.
Pass the online exam .
If you want to install, service, repair, test, or calibrate a commercial scale, you need a Scale Technician License.
The license fee is $65 per technician per year.
To apply
Prepare for the exam using the Scale Technician exam study guide .
Add the employee requiring a license to your USA Plants business account.
Pass the online exam .
If you want to install, service, repair, test, or calibrate a commercial taximeter, you must have a Taximeter Technician License.
The license fee is $65 per technician per year.
To apply
Prepare for the exam using the Taximeter Technician exam study guide .
Create an account in USA Plants if you don't already have one.
Pass the online exam .
If you want to be responsible for the weighing of commodities, you need a Weighmaster License. This will authorize you to weigh or measure accurately, identify improper weighing procedures, and be an impartial observer and recorder of a weighing event.
If your business engages in activities required by the Commissioner to be under the control and supervision of a licensed weighmaster, you need to employ at least one licensed weighmaster for each shift at each place of business where such activities are conducted.
Retail consumer outlets and individuals weighing pre-packaged commodities do not need a Weighmaster License.
The license fee is $100 per year per weighmaster.
To apply
Prepare for the exam using the weighmaster exam study guide .
Add the employee requiring a license to your USA Plants business account.
Pass the online exam .