Lumasense-technologies ISR 50-LO Manuel d'utilisateur télécharger pdf (Page 39)

INFRATHERM pyrometer ISR 50-LO

Mounting:

For mounting and aligning the optical head to the

measured object a mounting angle or a ball and

socket mounting is available. The ball and socket

mounting is an easy way to align the pyrometer to

the measured object. The clamping-screws of the

ball and socket mounting enable an easy and fast

adjustment of the pyrometer in all directions.

Mounting angle

Ball and socket mounting

Air purge:

The air purge protects the lens from contamination

with dust and moisture. It has to be supplied with

dry and oil-free pressurized air (1.5 m³ / h) and

generates an air stream shaped like a cone.

Air purge

Displays:

Additionally to the built-in temperature indicator of

the pyrometer IMPAC offers several digital displays

which can also be used for remote parametrizing of

the pyrometer.

Digital display DA 6000

LED large display

7 Optical head

The instrument will be delivered with a HD optical head which is specially designed to connect a HD fibre.

This optic has to be adjusted ex works to the required measuring distance (possible range is 340 …

4500 mm, the measuring distance is always measured from the front of the lens). Only in this distance the

spot sizes mentioned in the table 7.1 will be

achieved. A tape can be used to determine the distance be-

tween object and pyrometer. Decreasing or increasing the measuring distance enlarges the spot size. Spot

sizes for intermediate distances, that are not shown on the optical profiles, may be calculated using the

following formula:

Ø M

Ø M1

()

DDM

−+=

()

DDM

+−=

adjusted

measuring distance

6 mm

Aperture-Ø D

Note:

In ratio mode the pyrometer can measure objects at any distance, objects can be

smaller or bigger than the spot size in this distance (see 9.6 Switch-off level).

In 1-color mode

the pyrometer can measure objects at any distance, but it has to

be at least as big as the spot size of the pyrometer.

7.1 Measuring distance / spot size

Spot size M

[mm] Measuring

distance

a [mm]

700 … 1800°C (MB 18)

(green marked fibre)

800 … 2500°C (MB 25)

(red marked fibre)

1000 … 3000°C (MB 30)

(yellow marked fibre)

Aperture

D [mm]

340 5.1 1.7 0.9 17

600 9 3 1.5 17

1000 15 5 2.5 17

4500 66 22 11 17

: Spot size M focusing to the measuring distance „a“ for 90% of the radiation.

D: The aperture is the effective lens diameter of the optics

1 2 ... 34 35 36 37 38 39 40 41 42 43 44 ... 55 56

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Lumasense-technologies ISR 50-LO Manuel d'utilisateur Page 39

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