Electronics Weekly
Measuring 19 x 16 x 5mm (sensor only), KM019 comes in three versions: 0 to 10N, 0 to 20N or 0 to 45N.
Tension or compression is applied through a pair of 4-40 UNC threaded holes in the two opposing 16 x 5mm faces – see below for more mechanical dimensions.
The internal Wheatstone bridge needs a 10V ac or dc bias supply (20V ac or dc max) and output at the nominal maximum force (Fnom) is 2mV per applied volt.
Input resistance is 387Ω ±50Ω, and it has a 350Ω ±5Ω output resistance.
Relative linearity error and hysteresis are ≤0.2% of Fnom, and relative repeatability error and relative deviation of zero signal are both ≤0.1% of Fnom.
The sensor will behave to spec over +15 to +70°C, and continue to operate down to -30°C and up to +85°C with slightly degraded tolerances, the company told Electronics Weekly.
Gain drift is ≤0.04% of Fnom/°C and zero offset drift is ≤0.02% of Fnom/°C.
Allowable physical over-load is 10 times Fnom.
The 2.3mm 1.5m long cable leaves from one of the 19 x 5mm faces, initially protected by a spring (see photo), and a metal shield increases total thickness to 7mm. Overall, the sensor has an IP40 protection rating.
“The Mini-S-Beam force transducer is particularly suitable for measuring small forces in production, dosing and assembly processes,” said Megatron. “Typical applications for the new miniature sensor include packaging systems for fragile goods, tablet presses, systems for handling pressure-sensitive parts and devices for measuring actuating forces for switches and levers, for example.” – adding that the sensors are not for use in legal metrology.
No amplifier nor bridge buffer is included, although Megatron offers a matching amplifier within its IMA2 DMS range (left) which have various standard industrial analogue outputs.
Owner-managed since 1960 and based near Munich, Megatron develops and manufactures its own products, and distributes products from other companies.
Find the KM019 force sensors on this web page, and the matching Wheatstone bridge amplifier here
