4 Speciications
4.1 Load cells
4.1.1
Equipment supplied with the load cell
No.
Description
1
Load cell
2
Quick guide/Installation manual
3
Certiicate
4
Load cell grease incl. usage instructions
4.1.2
General information
Restoring force
For each mm of displacement that the top of the load cell is shifted from the vertical
axis, a horizontal restoring force of 1.55% of the load resting vertically on the load cell
is generated per millimeter delection (measured at the load cell head).
Material for load cell
housing
Stainless steel 1.4301 acc. to DIN EN 10088-3 (corresponds to AISI 304, B.S. 304S11/
S15)
Protection against en-
vironmental inluences
Hermetically sealed by welding.
Filled with inert gas.
Protection classes
in compliance with EN 60529
IP68/IP69:
Dust-proof and leak-tight against water, with harmful efects when immersed, (1.5 m
water depth, 10,000 h) and water jets (high pressure and temperature).
Explosion:
Suitable for explosion subgroup IIC and IIIC.
Protection type
Intrinsic safety for PR 6221/..E
Ambient temperature in
the Ex area
see additional information “safety instructions for Ex load cells”
Cable diameter
5 mm
Cable length
Standard version: 16 m
Ex version: 20 m
Cable gauge
4×0.35 mm
2
Cable bend radius
≥25 mm (ixed installation)
≥75 mm (lexible installation)
Cable sheath material
Thermoplastic elastomer (TPE)
Cable sheath color
Green (standard version)
Blue (Ex version)
Weighbridge Load Cell PR 6221
4 Speciications
Minebea Intec
EN-8