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No. 4.012 – Drag Pointer (10 pcs)







Recommended Sales Price
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CHF  13.00

EUR  11.57

USD  13.67

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Technical data
Item no. 4.012
Material POM with TeflonŽ
Net weight 2 g
Gross weight 4 g
Packaging unit bag of 10 pcs
Code EAN13 7612348140121
Customs Tarif 8423.9092
Country of origin Switzerland (CH)
Quality Image (RGB) Detailed information

Brief product information
Fits all Medio-Line spring scales. The drag pointer is a plastic ring, new with well gliding Teflon components. The drag pointer easily clicks over the aluminium scale tube. Before measuring move the drag pointer towards the zero position. With increasing load the drag pointer moves down and stops at the maximum load per measurement.
Suitable for rupture tests up to 1000 g. (The fine Micro-Line spring scales are not designed for use with drag pointers as possible friction might influence the reading).
 
Influence of Frictional Force of Drag Pointers on the Measuring Results
Operating Condition of Drag Pointer -> Frictional Force

  • immediately after first assembly on the scale tube -> ~ 40 g / 0.4 N
  • one hour after assembly on the scale tube -> ~ 35 g / 0.35 N
  • one day after assembly on the scale tube -> ~ 28 g / 0.28 N, ever after remaining at same level
 
To determine the exact value of the measurement with a drag pointer, its (small) friction force on the tube will have to be deducted. Compare your operating condition with the above cited 3 versions.
The indicated frictional force is to be deducted from your measuring result, except for the case of a repeated comparison measurement of no relevance to the absolute value.
 
HINT: Attach the new drag pointer to the tube and wait for one day until the first use. Thereafter the smallest and continuous friction force will be reached.
 
ATTENTION: A greasy or dirty tube surface may slightly influence the measuring result as well as bending the drag pointer ring open or compressing it (variation in friction of the drag pointer). During rupture tests the spring backstroke force may slightly displace drag pointers of very low clamping force.


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