DELTA LTL 2000 RetroMeter, highway DOT road surface markings retroreflectometer



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LTL2000 Retrometer

LTL2000 RETROMETER, On site quality control of road markings & road surfaces in agreement with CEN specifications


The LTL2000 Retrometer is a self-contained, portable instrument with built - in facilities, capable to measure accurately and reliably retroreflection properties of road surfaces and road markings (dry and wet) including those with profiled and/or textured surfaces.
The LTL2000 Retrometer measures the retroreflection (with direct read-out of the coefficient of retroreflected luminance in mcd-m-2 .lx-1) at a simulated distance of 30m, a distance large enough to be relevant for practical driving conditions at night.
Built-in printer and non-volatile memory provide registration of measurement results and corresponding supplementary data. Serial interface RS232 is included for extended control, calibration, and data output. The LTL2000 Retrometer is powered by a rechargeable battery with a capacity corresponding to approx. 1000 measurements . A mains powered battery charger is supplied as a standard accessory.


  • Plane & profiled markings
  • Dry & wet surfaces
  • Measurements in full daylight
  • Stray light compensation
  • Measurement geometry corresponding to realistic viewing conditions in night time traffic in agreement with the prEN 1436 "Horizontal Signalization" draft standard
  • Portable, self-contained instrument with reflection standard for on site calibration
  • Direct digital read- out of the coefficient of retroreflected luminance, RL
  • Built-in printer
  • Data storage in internal non-volatile memory
  • RS 232 serial interface for data output, extended control, calibration and diagnostics
  • Carrying case, including calibration standard

LTL2000 specifications in agreement with prEN 1436 draft

Field of measurement:
Width 45 mm
Min. length 200 mm
Illumination angle to the road. 1.24°
Observation angle to the road 2.29°
Illumination angular spread horizontal 0.33°
Vertical 0.17°
Observation angular spread ±0.17°
Equivalent observation distance 30m
Min. reading ( mcd-m-2 .lx-1) 0
Max. reading ( mcd-m-2 .lx-1) 2000

Instrument dimensions:
Max. length 72cm
Max. width 21 cm
Max. height 47 cm
Weight 12 kg
Gross weight 22 kg

Power supply: Internal 12V, 3.5Ah sealed lead-acid battery external charger
Memory capacity: min. 1000 measurements
Serial communications: 9600, N, 8, 1 Interface: RS232


Seller refurbished. Good functional and cosmetic condition. Received from working department.


  • DELTA LTL 200 RetroMeter unit
  • Brand new battery
  • Charger
  • Carry case
  • Calibration standard
  • RS-232 serial cable


        30 Day warranty. We pledge to offer the best service and warranty to all of our customers!  We are extending a 30 Day warranty on this item. This is our way of saying thank you for allowing us to serve you.


        This is a genuine product from this manufacturer.