Delta LTL2000S Specifications download pdf (Page 26)

DELTA LTL2000S(Q) Retroreflectometer 22

the display one at a time using the keys.

An * after a text means that the message only is shown at special occasions e.g. an er-

ror or warning!

LTL2000S(Q) Display

Explanation (The following messages are possible)

R: 146 Q: 64

The latest measurement results.

Rl Signal: 143

Rl Out of Limit*

Rl Sig Overflow*

Rl Stray L: 0

Rl High Stray L*

VBat Rl: 11.2V

Low VBat Warning*

The measured Rl “raw signal” level.

The Rl value is negative.

Warning: unreliable measurement!

If the measured signal is greater than a predefined

limit then a warning will be displayed for one second

before the Rl Sig value is shown.

Error sources: Rl marking exceeds the dynamic range

of the instrument, failure in the optical system e.g.

dew or dirt on the front window or it can be an elec-

trical failure.

The measured stray light representing the amount of

light getting into the instrument from outside. Stray

light levels under acceptable predefined limits is dis-

played as 0.

Warning. A high stray light signal can indicate prob-

lems with direct sunlight from a low sun on a very

rough or uneven surface. Special precautions must, if

necessary, be taken to hinder the light from shining

directly on the measurement area. A warning will be

displayed for one second, if the signal gets critical,

before the Rl Stray L value.

The battery Rl voltage measured while the lamp is on.

The reading can be used to check the charge condition

of the built-in 12 V battery.

A warning will be displayed for one second before the

VBat Rl voltage is shown, if the voltage under load

drops to a critical low value. If the battery voltage

gets very low, the instrument will shut off during the

measurement because the battery voltage drops fur-

ther when the lamp is lit. This condition will be re-

ported in the display on the next power on. Measuring

will not be possible until the battery is recharged.

Qd Signal: 875

The measured Qd signal level.

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Delta LTL2000S Specifications Page 26

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