FIELD FIELD

CALIBRATION OFCALIBRATION OFCALIBRATION OFCALIBRATION OF

INSTRUMENTS.INSTRUMENTS.

� Douglas Churchill, PLS – Geospatial Sales and Support

– dchurchill@keypre.com

Introduction

� Lou Desimone– Service Technician

– ldesimone@keypre.com

� Founded 1989� 5 Offices With Service Centers

(VA-ME) – HQ Allentown, PA– NY Office, East Syracuse

About KPI

– NY Office, East Syracuse

� Trimble Geospatial– Infrastructure

� VRS Network (KeyNetGPS)

– Tools– GC/CM Field Solutions– Spectra Precision

� Definition� What needs field calibration� When should a calibration be completed� Benefits of calibrating Equipment� Compare

– Field Calibration

OVERVIEW

– Field Calibration– Service Calibration

� Procedures� Accessory part availability� Benefits of a Maintenance program� Schedule� Tips

� Field Calibration- is the practice of performing “function checks” and adjusting equipment in the field and office to account for the

Doug’s Definition

office to account for the environmental and performance variables.

What equipment needs a Calibration/Maintenance

� Total Station

� Prism Pole

� Tripod

� Tribrach� Tribrach

� Auto Level

� Lasers

Why / When / How

Field Calibration -vs- Service Calibration� Field Calibration

– Can be completed by the End User

– “Functional Test”– Adds user offsets to the instrument’s current offset values

which helps to calculate out most

Comparison

which helps to calculate out most of the angular errors

� Service Calibration– Cannot be completed by the End User

– “Testing All Functions and alignments”– Adjusts the factory offset values of the instrument to the

original manufacture specifications– Certificate of Calibration

Observe!

Total Station-� Are your bubbles consistent?

� OP Adjustment

� Instrument calibration routines

� Antenna’s?

AccessoriesAccessories� Prism Pole

� Tribrach

� Traverse Kits

Auto Levels-� Are your loops closing

Laser-� Rotating lasers.

Robotic Total Station Calibrations. Trimble S6 Example.

HA/VA Collimation.

If current values are 0’s

Then collimation has not been done.

Tracker Collimation.

If current values are 0’s

Then collimation has not been done.

Using Tribrach Adjustors.

� Place the tribrach on a tripod. Put the adjustor on the tribrach. Place the to be adjusted on top of the adjustor so that it is upside down looking at a target on the ceiling. The distance between the tribrach and target should be 4-5 feet.

� Using the leveling screws of the bottom tribrach, put the crosshair of the tribrach being tested on the target.the tribrach being tested on the target.

� Rotate the tribrach being adjusted 180 on the adjuster. If the crosshairs stay on the target you are good to go.

� After the 180 turn if the crosshair does not stay centered on the target, half the error needs to be corrected for. Use the adjustment screws on the tribrach to do this. NOTE: Adjustment screws and techniques do vary by tribrach manufacturer.

� Repeat the second two steps shown above until you get to the point where the crosshair stays on the target.

Peg Testing your Levels.

What about GPS?

-Accessories� Rover Pole

� Tribrach’s?� Tribrach’s?

� Tripods.

Calibrating the Tilt Sensor and ECalibrating the Tilt Sensor and E--Bubble.Bubble.

Calibrating the Tilt Sensor and ECalibrating the Tilt Sensor and E--Bubble.Bubble.

Calibrating the Tilt Sensor and ECalibrating the Tilt Sensor and E--Bubble.Bubble.

Calibrating the Tilt Sensor and ECalibrating the Tilt Sensor and E--Bubble.Bubble.

Calibrating the Tilt Sensor and ECalibrating the Tilt Sensor and E--Bubble.Bubble.

Calibrating the Tilt Sensor and ECalibrating the Tilt Sensor and E--Bubble.Bubble.

Calibrating the Tilt Sensor and ECalibrating the Tilt Sensor and E--Bubble.Bubble.

Adjustment tools.• Tribrach adjusting cylinders'.

• Prism pole jigs.

• https://www.loink.com/category/surveyingoptribrachadjustingsupplies

Part Availability- Accessories• Trimax

• 90550

• Tripod

• 22217

• Bi-Pod• Bi-Pod

• 5217-04-XXX

• Prism Pole

Low Dollar repairs. Why?

Technical Tips!

http://www.surveying.com/Video/Tech-Tip-Videos.aspx

� Maintenance Schedule/Plan– Ex: My Trimble Protected

� http://www.trimbleprotected.com/� VIDEO

– Free Rentals for Units under Support

� Peace of Mind� Planned and budgeted maintenance expenses

Maintenance

� Planned and budgeted maintenance expenses� Avoid surprises, lost productivity, downtime� Stay up-to-date and consistent on Firmware &

Software� Fleet management support� No more “bad news” moments

Field Calibration Checklist

– Tripod � Tighten up loose screws� Make sure clamps are secure� Points are tight (use a point that fits

your needs, use never sieze)� Feet- secure � Straps- secure and complete

Additional Tips

� Straps- secure and complete� Etc

– Instrument Storage� Never Put away WET or COLD!� Always put in the case to transport

(even short distances)� Wipe down once a week with a damp

cloth (avoid optics)

– Firmware and Software Updates!� Latest versions can be downloaded

from manufacturers web sites.

www.facebook.com/Keystone

PrecisionInstruments

QUESTIONS?QUESTIONS?

Sales- sales@keypre.com

Service- service@keypre.com

Rental- rental@keypre.com

www.keypre.com