The Gigasense Dynamometer is excellent for measurement and control of tension forces and weight, where accuracy, reliability and safety in all conditions is required. The Gigasense Dynamometer conforms to the International Standards for Safety Inspectorates. The Gigasense Dynamometer is an all-weather instrument, equally suitable for use in the laboratory as in the field for weighing and measuring mechanical tension forces.
The pull rod movement operates the scale drum through a square thread stem. The power-absorbing element consists of specially made Belleville type spring washers, so designed as to be entirely free from wear. The spring washers cannot be overloaded. The Dynamometer can be overloaded with 100% without affecting the accuracy.
The Dynamometer has a safety factor of 5:1. It is guaranteed to withstand a load of 5 times full scale reading before rupture. The resistance to rupture is tested by the National Swedish Institute for Materials Testing. The Dynamometer may be overloaded by 100% without impairing the accuracy. The Dynamometers, types M-G, have drop-forged steel eye brackets (SIS 2174, St 52-3N acc. to DIN 17100, 50 D acc. to BS 4360); giving a guaranteed impact resistance down to -20 degrees C.
The O-ring of the pull rod is protected by a neoprene rubber membrane. On instantaneous unloading, e.g. breaking test, the return movement of the pull rod is retarded by a specially made spring washer. The PIAB Dynamometer is approved by the National Board of Occupational Safety and Health for integral connection in the carrying system of a lifting device and for weighing of test loads in connection with inspection.
The Dynamometer can be equipped with a built-on adjustable contact head. Using a micro switch, which is directly influenced by the pull rod, the Dynamometer gives an electrical contact function at a previously set value. For types MA-O extension to the body length is about 100 mm, for Q about 110 mm, for S about 78 mm, for U and G about 95 mm and for type E about 102 mm. For a dynamometer with 1100 lb. or 2200 lb. capacity, types MA and MB are used. These have springs assemblies for 1100 lb. or 2200 lb., arranged in type M housings. Gigasense Dynamometers MA-O can be equipped with 1-3 and types Q-E with 1-5 micro switches. The electrical connections are made in the terminal box to a numbered connection block.
The Dynamometer is fully pressure tight and each instrument is pressure tested. No leakage is permitted. The external surfaces are Zinc plated with clear chromate passivation. If the dynamometer is to be used in a very corrosive environment, it can be polyester lacquered. On special request the Dynamometer can be supplied Nickel plated.
The Gigasense Dynamometer used for remote reading is supplied with a built-in precision potentiometer. The potentiometer is directly connected to the scale mechanism of the Gigasense instrument. The electrical resistance of the potentiometer varies in proportion to the load on the Dynamometer. The resistance is indicated on a receiving instrument, calibrated individually and marked with the same serial number as the dynamometer. The connection to the Gigasense Dynamometer is made through a terminal box mounted on the surface of the Gigasense Dynamometer. If a Gigasense Dynamometer with potentiometer is delivered without receiving instrument, a resistance chart with at least 10 incremental values is included.