Our Services
ZLS Corporation provides repair services for ZLS and LaCoste & Romberg meters. ZLS is fully equipped with clean rooms, an electronics lab, machine shop, and test facilities for service, repairs, and manufacture of new gravity meters.
Service of ZLS Burris Gravity Meters
Major Service (every 10 to 20 years)
Set levels
Meter testing and evaluation
Cleaning of sensor
Gear-box cleaning, changing of bearings and re-lubricating
Changing of seals
Adjust sensor to factory specifications
Turnaround time is usually four to six weeks but varies depending on the work load at ZLS. Repairs, if necessary, are quoted at a fixed rate per hour for labor, plus parts. Major service includes the following:
Additional meter testing
2-day leak test minimum
Backfill sensor with dry nitrogen
Seal sensor
Field/calibration check
Package for shipment
Service of ZLS Dynamic Gravity Meters
Major Service (every 5 years)
Set levels
Meter testing, both static and dynamic, and evaluation
Changing of seals
Leak test
Flood and floor tests
Platform compensation and calibration
Package for shipment
Turnaround time is usually four to eight weeks but varies depending on the workload at ZLS. Repairs, if necessary, are quoted at a fixed rate per hour for labor, plus parts. Major service includes the following:
Service of L&R Meters
Major Service for L&R Land and Earth Tide Meters (every 5 to 10 years)
This service is recommended for L&R land and earth tide meters that have not been serviced by ZLS. The service is also recommended for meters that have been serviced by ZLS within the last 5 to 10 years. Turnaround time is usually four to six weeks but varies depending on the workload at ZLS. Repairs, if necessary, are quoted at a fixed rate per hour for labor, plus parts. Major service includes the following:
Set levels
Meter testing and evaluation
Cleaning of sensor
Gear-box cleaning, changing of bearings and re-lubricating
Changing of seals
Adjust sensor to factory specifications
Additional meter testing: 2-day leak test minimum
Backfill sensor with dry nitrogen
Seal sensor
Field/calibration check
Package for shipment
Minor Service for L&R Land and Earth Tide Meters (every 3 to 5 years)
This service is recommended for L&R land and earth tide meters that have been serviced by ZLS within the last 3 to 5 years. Turnaround time is usually two to four weeks but varies depending on the workload at ZLS. Repairs, if necessary, are quoted at a fixed rate per hour for labor, plus parts. Minor service includes the following:
Adjust sensor to factory specifications
Additional meter testing: 2-day leak test minimum
Backfill sensor with dry nitrogen
Set levels
Meter testing and evaluation
Changing of seals
Seal sensor
Field/calibration check
Package for shipment
Major S-Meter Sensor Service (every 5 to 10 years)
ZLS UltraSys Upgraded L&R S-Meters Only
This service is recommended for ZLS upgraded S-Meters that have been upgraded or serviced by ZLS within the last 5 to 10 years. Turnaround time is usually four to six weeks* but varies depending on the workload at ZLS. Repairs, if necessary, are quoted at a fixed rate per hour for labor, plus parts. ZLS Upgraded S–Meter Major service includes the following:
Set levels
Meter testing, both static and dynamic, and evaluation
Cleaning of sensor
Gear-box cleaning, changing of bearings and re-lubricating
Changing of seals
Adjust sensor to factory specifications
Adjust dampers for optimal cross-coupling
Additional meter testing, both static and dynamic
Leak test
Backfill sensor with dry nitrogen
Seal sensor
Package for shipment
*Turnaround time is dependent on the extent of damper adjustments.
Minor S-Meter Sensor Service (every 3 to 5 years)
ZLS UltraSys Upgraded L&R S-Meters Only
This service is recommended for ZLS upgraded S-Meters that have been upgraded or serviced by ZLS within the last 3 to 5 years. Turnaround time is usually two to four weeks but varies depending on the workload at ZLS. Repairs, if necessary, are quoted at a fixed rate per hour for labor, plus parts. ZLS Upgraded S–Meter Minor service includes the following:
Set levels
Static meter testing and evaluation
Changing of seals
Adjust sensor to factory specifications
Additional meter testing
Leak test
Backfill sensor with dry nitrogen
Seal sensor
Package for shipment