GN 000.8 Position indicators Pendulum system, analog indication

Photo

ELESA original design
code: GA11 / GA12

Product description

Information

Position indicators GN 000.8 are suitable for installation in various types of operating elements.

Points of special interest are:
Housing, spindles of pointers and sight glass are all in one piece welded by ultrasonic process. They are spray water proof and corrosion proof (Protection class IP 67).

The pendulum system is mounted on ball bearings for accurate display, and operational up to 60°.

The reducing ratio shows the number of revolutions (long red hand) required per 1 complete revolution of the small hand.


Specification

Housing, plastic
Technopolymer (Polyamide PA)
  • Glass fiber reinforced
  • Black, matte finish

Sight glass plastic
Technopolymert (Polyamide PA)
  • clear glass, ageing proof
  • shock-resistant

Housing / Sight glass
  • temperature resistant up to 100 °C
  • oil and solvent proof
    (not suitable for alcohol)

Pointer plastic
  • long pointer red
  • short pointer black

Scale aluminum
  • matte anodized
  • Graduation lines and numbers black

Pendulum system on ball bearings

Protection class IP 67

RoHS

On request

Special scales
glycerin filled as a damping media

Technical drawing

3D
Hide technical drawing
GN 000.8 Position indicators, Pendulum system, analog indication sketch

Article options / Table

Type

RNumbers ascending clockwise
LNumbers ascending anti-clockwise
Show / Hide columns
d1Reduction
Counting gear
d2d3l1l2
422:1*10:120:140:172:1*49,848,23023
424:1*12:124:148:1*100:1*49,848,23023
426:1*15:1*30:150:1*120:1*49,848,23023
428:1*16:1*36:1*60:1*-49,848,23023
602:1*10:120:140:1*72:1*68,5673225
604:1*12:124:148:1*100:1*68,5673225
606:115:1*30:150:1*120:1*68,5673225
608:1*16:1*36:160:1*150:1*68,5673225
* not available from stock, requires a minimum order quantity

Build & Price

Outside diameter d1
Reduction
Type


Function

Fixed firmly to the housing or the operating element, the pointer shaft with the longer red pointer is mounted at the centre of the position indicator. The red pointer therefore shows the revolution of the spindle at a ratio of 1 to 1, at the same time turning in the same direction as the spindle. The pendulum is positioned freely on the same pointer shaft, with the pendulum not turning in sync but always held in the same position owing to its force of gravity.
The scale and the gear wheels required for the desired reduction ratio of the second pointer are mounted on this pendulum. The rotary motion of the operating element is now transferred to the second, shorter pointer via a gear wheel fixed to the pointer shaft and via the reduction gearing at the fixed pendulum. Any position (rotary position) of the spindle can now be read with accuracy on the scale.

Use

The outstanding feature of pendulum-type position indicators is that the measuring system is fully integrated in the operating element. During installation, they require no further measures on the machine side.
In principle, these position indicators have been designed solely for attachment to horizontal spindles, but the high precision of the mechanical measurement system (the pendulum system is mounted on ball bearings) and the extremely low centre of gravity allow these to be used also for spindles inclined by as much as 60°.

Selecting the reduction

While the longer red pointer shows the rotary motion of the spindle of a ratio of 1 to 1, the shorter black pointer makes only a fraction of the rotary motion defined by the reduction ratio.
The reduction ratio is selected depending on the maximum number of spindle revolutions over the entire range of adjustment. The preferred selection is the standard reduction ratio which is the same as or, if possible, slightly larger than the maximum number of revolutions.


Example:

Spindle adjustment range: 11 revolutions

Selected reduction ratio: 12 to 1

This selection gives virtually the whole scale range for the position indication.

Scale

The standard scales have divisions (number of graduation marks) matching the reduction ratio.
The numerical sequence also matches the reduction ratio depending on use, i.e. right turn (clockwise) or left turn (anti-clockwise).
If required and using a separately arranged table, the measured value corresponding the application in hand can be assigned to each scale number. Special scales on request.

Selected Part (How to order)

Weight: 0,075 kg
If this article is new in our product range, it may happen that details concerning weight are as yet not listed.
If you do need weight details, please contact our Sales Department!
Phone+49 7723 6507 - 0
RoHS: Yes
This article is RoHS-compliant in application of Annex III., which means it complies with EU Directive 2011/65/EU, including extension (2015/863/EU), for restricting the use of certain hazardous substances in electrical and electronic devices. The Directive regulates the use of hazardous substances in devices and components. The implementation in national law is summarily described with RoHS(Restriction of (the use of certain) hazardous substances)).
Please note our quantity discounts.
With a total value (net) per order:
from 175,00 Euro -> 10 % discount
from 275,00 Euro -> 20 % discount
from 375,00 Euro -> 30 % discount
With a total value (net) per order:
All prices in accordance with our price list No. 52, valid from 1 May 2019, plus VAT only valid for Germany.

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