설명
KDH-1 Weigh Module
Features
Capacity range: 200K and 300K lb (90.7K and 136K kg)
Low profile and low deflection with symmetrical mounting bolt pattern for easy installation
Floating design allows for thermal expansion and contraction
Seismic and wind resistant self-checking design
FM and CSA approved for hazardous locations
Application: Process Weighing & Batching,Hazardous Areas
Certificates: cFMus
Combined Error: 0.06-0.1 %
Environment Protection Class: NEMA 6,IP67,IP66,IP65,IP54,IP20
Industry: Metal,Mining,Chemical,Pharmaceutical,Food & Beverage
Material: Plated Steel,Painted Steel
Max Capacity: k lb: 115-450
Max Capacity: kN: 500-2000
Max Capacity: ton: 50-200
Product Type: Weigh Modules & Load Cells
CONFIGURATION
High Capacity Weigh Modules
DESIGN FEATURES
The cylindrical double-ended shear beam module is designed to measure shear stresses induced by an applied load without errors caused by thermal expansion. The combination beam and mounting hardware are ideally suited for use on large outdoor storage vessels where temperature, wind, and possibly seismic forces are encountered. The cylindrical tube-type transducer offers several advantages over rectangular shear beam designs. Superior resistance to moisture contamination is accomplished by eliminating gaged pockets on the outside of the beam. Instead, the KDH uses strain gages applied to the inside wall of the tube. In addition, the cable entry is equipped with a conduit itting for cable protection and is internally potted. Structurally, the cylindrical tube is equally strong in both the vertical and horizontal planes. Unlike rectangular shear beams that are typically weaker in the horizontal plane, KDH modules are less affected by sideloads induced by vibration, wind, or process dynamics. The design of the mounting hardware eliminates the need for pins and/or bolts to attach the beam. This reduces the adverse effects of varying edge and point stresses and makes the overall module less susceptible to calibration changes. Low proile design, symmetrical mounting bolt patterns, and optional top plates make KDH modules easy to install on new or existing structures and vessels.
TYPICAL KDH-1B WEIGH MODULE MOUNTING ARRANGEMENTS
High Capacity Weigh Modules
DIMENSIONS
| Capacity (lbs) | A | B | C | D | E | F | G |
|---|---|---|---|---|---|---|---|
| 200,000 | 12.0 | 10.0 | 1.69 | 3.18 | 9.97 | 2.28 | 1.10 |
| 300,000 | 14.0 | 11.0 | 1.90 | 2.97 | 10.73 | 2.40 | 1.65 |
High Capacity Weigh Modules
SPECIFICATIONS
| Parameter | Value |
|---|---|
| PERFORMANCE | |
| Capacity | 200K and 300K lb (90.7K and 136K kg) |
| Rated output (RO) | 2.0 mV/V ±0.1% |
| Zero balance | 1% RO |
| Combined error (best fit) | 0.10% RO |
| Creep (20 minutes) | 0.03% RO |
| Repeatability | 0.02% RO |
| ELECTRICAL | |
| Input resistance | 700 Ω ±7 Ω |
| Output resistance | 700 Ω ±7 Ω |
| Recommended excitation | 10 VAC or VDC (20 V max.) |
| TEMPERATURE | |
| Safe range | –34.4 to 104.4 °C (–30 to 220 °F) |
| Compensated range | –1 to 54 °C (30 to 130 °F) |
| Temperature effect on zero balance | 0.0025% RO per °F (30–130 °F) |
| Temperature effect on span | 0.0015% Reading per °F (30–130 °F) |
| LOADING SPECIFICATIONS (% RATED CAPACITY) | |
| Safe load | 150% (200K / 300K) |
| Ultimate load | 300% (200K / 300K) |
| Safe uplift | 100% (200K / 300K) |
| Ultimate uplift | 110% (200K), 155% (300K) |
| Safe sideload (axial) | 20% (200K), 50% (300K) |
| Ultimate sideload (axial) | 40% (200K), 105% (300K) |
| Safe sideload (transverse) | 85% (200K), 55% (300K) |
| Ultimate sideload (transverse) | 170% (200K), 110% (300K) |
| MATERIAL | |
| Beams | Ultra high strength steel |
| Brackets | High strength steel |
| PROTECTION | |
| Environmental class | NEMA 6, IEC IP67 |
| Corrosion protection | KDH-1A zinc chromate beam and hardware |
| DEFLECTION & WEIGHT | |
| Deflection (200K lb) | 0.029 in |
| Weight (200K lb) | 250 lb |
| Deflection (300K lb) | 0.050 in |
| Weight (300K lb) | 300 lb |
| TERMINATION | |
| Electrical connection | 10 m (32 ft 10 in) cable with conduit fitting (200K / 300K) |
NOTE: Many performance speciications are proven on a statistical sample basis. BLH Nobel is continually seeking to improve product quality and performance. Speciications may change accordingly.
THERMAL INSULATION PADS
Thermal insulation pads reduce heat conducted from a heated vessel. The pads are made of rigid laminate with extremely low thermal conductivity. BLH Nobel recommends using insulation pads if the vessel mounting surface temperature exceeds 52°C (130°F). Pads are 1 in thick with bolt spacing identical to module top plates.
DUMMY BEAMS
Optional dummy beams are solid steel shafts with the same dimensions as the corresponding KDH-1 beam. Dummy beams are used in place of the KDH-1 beams during the installation process. Using dummy beams eliminates the risk of damaging precision KDH-1 beams while welding and/or positioning the weigh vessel.
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