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Truck Scale Load Cells PR6221

Truck Scale Load Cells PR6221

Brand : Sartorius

Weighing Capacity

20t … 75t

Accuracy (in % Emax)

0.015 (C3), 0.012 (C4), 0.010 (C5), 0.008 (C6)

 

Some Features

Proven rocked pin design. No corner adjustment necessary. 100% maintenance free. Ex-version availbale. IP 68 (1.5 m/10,000 hrs) /IP 69K (washdown cleaning)


Description

The PR 6221 range of load cells is designed exclusively for use on road weighbridges. The unique design principle, combined with the installation kits, counterbalances movements caused by mechanical or thermal expansion or contraction of the weighbridgeconstruction.

The unique combination of the selected geometry and material/surface hardness parameters guarantees perfect rolling characteristics, high restoring forces and long-term maintenance-free operation.

Product profile

The PR 6221 range of load cells is designed exclusively for use on road weighbridges. The unique design principle, combined with the installation kits, counterbalances movements caused by mechanical or thermal expansion or contraction of the weighbridge construction. The unique combination of the selected geometry and material/surface hardness parameters guarantees perfect rolling characteristics, high restoring forces and long-term maintenance-free operation. A particular design characteristic is that the height and shape of the load cell remain constant over various load stages, whilst there is a particularly high overload range of, in part, up to 200%. At the same time, this range distinguishes itself – in addition to its high measurement accuracy and repeatability – above all for its unmatched reliability, robustness and stability, which enable trouble-free operation without adjustment, year after year. The pendulum support principle, combined with patented measuring element geometry, ensures that force transmission into the sensor is always at the optimum level and, in this way, the effect on measurement accuracy is minimized. At the same time, the load cell offers a particularly high overload range. The hermetically sealed enclosure and special TPE cable allow the unit to be used even under extreme operating conditions. Special resistance strain gauge technology, in combination with the PR6021/.. cable junction boxes, provides for demonstrably improved lightning protection. The entire measurement chain can be calibrated without the use of a reference weight. Due to “matched output” technology, in many cases electrical corner adjustment is not required. This saves a tremendous amount of time during commissioning. An explosion-proof (Ex) version of this range of load cells is also available, as an option, for use in intrinsically safe environments.

Product Description

The PR 6221 range of load cells is designed exclusively for use on road weighbridges. The unique design principle, combined with the installation kits, counterbalances movements caused by mechanical or thermal expansion or contraction of the weighbridgeconstruction.

Restoring force

For each mm of movement that the top of the load cell shifts from the vertical axis, a horizontal restoring force of 0.5 % of the applied vertical load is generated.

Load cell housing construction

Deep-drawn pulled housing, membrane and measuring element hermetically sealed, welded, filled with inert gas.

Material-No

1.4301 (DIN 17440), 304 S15 (B.S.)

Ingress Protection

IP 68, IEC 529 / EN 60529: 1.5 m water column /10,000 h IP 69K, DIN 40 050: water under high pressure, steam cleaning Sealing equivalent to NEMA 6

robust, flexible, screened, sheath: TPE, colour: green (for PR 6221/..E: colour: blue), diameter: 5 mm, 4 x AWG22 (0.35 mm2), length: 16 m, bending radius: 50 mm (fix), 150 mm (flexible)

Bending radius

Fixed installation: ≥ 50mm; Flexible installation: ≥ 150mm

Certificate of conformity

Feature: II 1G EEx ia IIC T6, II 1D IP65 85°C; Registration number: PTB 02 ATEX 2059, TÜV 03 ATEX 2301x

Order number for ATEX load cells:

9405 6.. ..... e.g. PR 6221/20t C3E = 9405 621 03320

Specification

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