Deadweight Tester / Pressure Balance
GB
LR-
Cal
LDW-H
Operating Instructions
LR-
Cal
LDW-H
31
6. Specifications
.
Version
Single piston ranges
Double piston ranges
Measuring range 1)
bar,
1…120
2…300
1…60 /
1…60 /
1…60 /
kg/cm²
10…700
20…1,200
20…1,400
Required masses
kg
49.7
49.6
57.4
49.2
57.4
Smallest step 2) (standard mass set)
bar,
kg/cm²
0.5
2.5
0.5 / 5.0
0.5 / 10
0.5 / 10
Smallest step 3) (increment weights)
bar,
kg/cm²
0.02
0.05
0.01 / 0.1
0.01 / 0.2
0.01 / 0.2
Nominal cross-sect. area of piston
cm²
0.4032
0.1613
0.8065 / 0.0807
0.8065 / 0.0403
0.8065 / 0.0403
Measuring range 1)
psi, lb/in²
10…1.600
30…4.000
10…800 /
10…800 /
10…800 /
100…10,000
200…16,000
200…20,000
Required masses
kg
45.5
45.3
56.4
45
56.4
Smallest step 2) (standard mass set)
psi, lb/in²
5
20
5 / 50
5 / 10
5 / 100
Smallest step 3) (increment weights)
psi, lb/in²
0.2
0.5
0.1 / 1
0.1 / 2
0.1 / 2
Nominal cross-sect. area of piston
cm²
0.4032
0.1613
0.8065 / 0.0807
0.8065 / 0.0403
0.8065 / 0.0403
Measuring range 1)
kPa
100…12,000 200…30,000 100…6,000 /
100…6,000 /
100…6,000 /
1,000…70,000
2,000…120,000 2,000…140,000
Required masses
kg
49.7
49,6
57.4
49.2
57.4
Smallest step 2) (standard mass set)
kPa
50
250
50 / 500
50 / 1,000
50 / 1,000
Smallest step 3) (increment weights)
kPa
2
5
1 / 10
1 / 20
1 / 20
Nominal cross-sect. area of piston
cm²
0.4032
0.1613
0.8065 / 0.0807
0.8065 / 0.0403
0.8065 / 0.0403
Accuracies
Standard 4) 5)
% MV
0.015
0.015
0.015
0.015
0.025
Optional 4) 5)
% MV
0.007
0.006
0.006
0.007
0.007
Pressure transmission medium
Standard
Hydraulic fluid based on mineral oil VG22
Optional
Sebacate oil Sebacate oil Sebacate oil
Sebacate oil
Sebacate oil
Brake fluid
Brake fluid
Brake fluid
Brake fluid
---
Skydrol
Skydrol
Skydrol
Skydrol
---
Fomblin oil
Fomblin oil
Fomblin oil
Fomblin oil
---
Material
Piston
Steel
Steel
Tungsten
carbide
Tungsten
carbide
Tungsten
carbide
/ steel
/ steel
/ steel
Cylinder
Bronze
Steel
Steel /
Steel /
Steel /
Tungsten
carbide
Tungsten
carbide
Tungsten
carbide
Mass set
Stainless steel, non-magnetic
Weight
Piston-cylinder system
kg
1
0.8
2
2
2
Storage case for
kg
3.1
3.1
3.1
3.1
3.1
piston-cylinder system
kg
"bar" standard mass set
kg
61.3
61.2
69
60.8
69
(in 2 wooden cases)
"psi" standard mass set
kg
57.1
56.9
68
56.6
68
(in 2 wooden cases)
"bar" incremental weights
kg
0.33
0.5
0.5
0.5
0.5
"psi" incremental weights
kg
0.23
0.34
0.34
0.34
0.34
Dimensions
Carrying case for standard mass set
mm
W 400 x D 310 x H 310
Storage case for piston-cylinder
mm
W 300 x D 265 x H 205
systems (optional)
1) Theoretical starting value; corresponds to the pressure value generated by the piston or the piston and its make-up weights (by their own weight). To optimise the
operating characteristics more weights should be loaded.
2) The smallest pressure change value that can be achieved based on the standard weight set. To reduce this, a set of trim masses is also available.
3) The smallest pressure change value that can be achieved based on the optional fine increment weights. For further reductions, an accessory of class M1 or F1 trim
masses is available.
4) The accuracy from 10 % of the measuring range is based on the measured value. In the lower range, a fixed error based on 10 % of the range applies.
5) Measurement uncertainty assuming reference conditions (ambient temperature 20 °C, air pressure 1013 mbar, relative humidity 40 %). For operation without a
CalibratorUnit, corrections must be made if required.
