Sartorius PR 6201 Technical data

PR 6201 (500 kg… 50 t)
Precision Compression Load Cell

Product Profile

The PR 6201 range of load cells is specially
designed for weighing silos, tanks and
process vessels.

The unique design principle, in combination
with the FlexLock installation kits, makes
it possible to blance out movements arising
from mechanical or thermal ex pansion or
contraction of the vessel or its supporting
construction.

A particular design characteristic is that the
overall height and shape of the load cell
remain unchanged, from 500 kg up to 50 t.
Alongside this, the unit has an especially
high overload capacity of 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 offer 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, high repeatability and perfect
linearity.

There is an especially wide working tempera­ture range attributable to sophisticated
resistance strain gauge technology. The
hermetically sealed enclosure and special TPE
cable allow the unit to be used even under
extreme operating conditions in harsh
production environments.

The entire measurement chain can be
calibrated without the use of reference
weights. Due to “matched output” techno ­logy, a damaged load cell can be exchanged
without the need for re-calibration. 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.

500 kg… 50 t Type LA | L | D1 | C3

– Easy to install
– Well-proven rockerpin design
– Easy corner adjustment by matched

load cell output
– Full stainless steel housing
– Wide temperature range
– High overload capacity
– Resistant against vibrations
– Hermetically sealed, IP68

(depth of 1.5 m for 10,000 hrs.), IP69K
– 4 to 20 mA output signal as option

(LA version)
– Optimum overvoltage protection
– Ex-version available (PR 6201/..E)
– W&M aprroval (OIML R60, NTEP)

Technical Data LA L D1 | N C3

Accuracy class 0.25 0.25 0.04 0.015 % E

max

Minimum dead load lowest limit of specified measuring range E

min

00 0 0% E

max

Maximum capacity highest limit of specified measuring range E

max

s. table s. table s. table s. table

Minimum LC verification minimum load cell verification interval,

v

min

= E

max

/Y Y 5,000 14,000

interval for E

max

= 1,000 kg Y 4,000

for E

max

= 500 kg Y 2,000

Rated output relative output at nominal load Cn16 mA 1 1 1 mV/V

for E

max

= 50 t (LA = 4...20 mA) Cn16 mA 2 2 2 mV/V

Tolerance on rated output permissible deviation from rated output dc< 1.0 < 1.0 < 0.25 < 0.07 % C

n

Zero output signal load cell output signal under unloaded condition S

min

4 mA* < 2.0 < 1.0 < 1.0 % C

n

Repeatability error max. change in load cell output

for repeated loading ε

R

< 0.02 < 0.02 < 0.01 < 0.005 % C

n

Creep, during 30 min. max. change in load cell output

under nominal load d

cr

< 0.05 < 0.05 < 0.03 < 0.015 % C

n

Non-linearity max. deviation from best straight line through zero d

Lin

< 0.25 < 0.25 < 0.03 < 0.01 % C

n

Hysteresis max. difference in load cell output dhy< 0.25 < 0.25 < 0.04 < 0.015 % C

n

between loading and unloading

Temperature effect on S

min

max. change of S

min

/10 K over BTreferred to C

n

TK

Smin

< 0.15 < 0.15 < 0.028 < 0.01 % Cn/10K

Temperature effect on C max. change of C/10 K over BTreferred to C

n

TKc< 0.1 < 0.1 < 0.03 < 0.01 % Cn/10K
Input impedance between supply terminals RLC– 650 + 50 650 ± 6 650 ± 6 O
Output impedance between measuring terminals RO– 610 ± 3 610 ± 1 610 ± 0.5 O
Insulation impedance between measuring circuit and housing at 100 VDCRIS– > 5,000 +106> 5,000 +106> 5,000 +106 O
Insulation voltage between circuit and housing, PR 6201/..E only - 500 500 500 V
Recommended to hold the specified performance Bu20… 28 4… 24 4… 24 4… 24 V

supply voltage
Max. supply voltage permissible for continuous operation U

max

28 32 32 32 V

without damage

Nominal ambient to hold the specified performance BT-10… +55 -10… +55 -10… +55 -10… +55 °C
temp. range

Usable ambient permissible for continuous BTu-30… +55 -40… +95 -40… +95 -40… +95 °C
temp. range operation without damage

Storage transportation and storage BTl-40… +70 -40… +95 -40… +95 -40… +95 °C
temperature range

Permissible eccentricity permissible displacement from nominal load line Sex10 10 10 10 mm
Vibration resistance resistance against oscillation (IEC 68-2-6 Fc) - 20 g, 100 h, 20 g, 100 h, 20 g, 100 h, 20 g, 100 h,

10… 150 Hz 10… 150 Hz 10… 150 Hz 10… 150 Hz

Air pressure effect influence of ambient air pressure on S

min

PK

Smin

up to 2 t 250 250 250 250 g/kPa
3 t to 10 t 320 320 320 320 g/kPa
from 20 t 420 420 420 420 g/kPa

Nominal deflection max. elastic deformation under nominal load s

nom

up to 30 t < 0.5 < 0.5 < 0.5 < 0.5 mm
50 t < 0.8 < 0.8 < 0.8 < 0.8 mm

* Tolerance on zero output signal: ± 2% C

n

Definitions acc. to VDI/VDE 2637
Data for LA version are typical values. The technical data given here serve only as a product
description and must not be interpreted as guaranteed characteristics in the legal sense.

Restoring force

For each mm of movement that the top of
the load cell shifts from the vertical axis, a
horizontal restoring force is generated of:
max. capacity ≤ 10 t: 0.65 %
max. capacity ≥ 20 t: 1.55 %
of the vertical load on the load cell

Load cell housing

Full stainless steel housing, membrane and
measuring element hermetically sealed,
welded, filled with inert gas.
Material-No.1.4301 (DIN 17440), equivalent
to 304 S11/S15 (B.S.)

Ingress Protection

IP68, IEC529 (equivalent to NEMA 6). The
load cell can be submerged in water to a
depth of 1.5 m for 10,000 hours, IP69k

Cable

Robust, flexible, screened
Sheath: TPE Thermopl. Elastomere, grey
(for PR 6201/..E: blue)
Diameter: 5 mm, wires 4 + 0.35 mm

2

Length: 5 m (500 kg - 10 t), 12 m (20 t – 50 t)

Bending radius

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

Certificate of conformity

Valid for: PR 6201/..E
Feature:
II 1 G EEx ia IIC T6, II 1D IP65 T 85 °C
Registration number:
PTB 02 ATEX 2059, TÜV 03 ATEX 2301X