Vishay Nobel KIS-2 20KN

Product Introduction

Manufactured by Vishay Nobel (BLH Nobel), part of the KIS-2 series of high-precision industrial load cells.
Designed for continuous process weighing, batch blending, reactor vessel weighing, and web tension control in harsh industrial environments.

Category: Others

Description

Features a unique double cantilever beam elastic element with a movable (floating) load point to accommodate misalignment and thermal expansion.
Engineered to withstand very high lateral (side) forces up to 100% of rated load without accuracy loss.

Technical Specifications

Nominal Capacity: 20 kN (approx. 4.5 k lbf)
Rated Output (R.O.): 2.040 mV/V
Combined Error: ±0.05 % of Rated Output
Repeatability: 0.01 % of R.O.
Input Resistance: 350 ± 3 Ohm
Output Resistance: 350 ± 3 Ohm
Zero Balance: ±5 % of R.O.
Creep (30 min at R.L.): ±0.03 % of R.L.
Recommended Excitation: 10 VDC/VAC (Max 18 VDC/VAC)
Insulation Resistance: >4 GΩ at 200 VDC
Safe Overload: 150 % of Rated Load (20 kN model)
Ultimate Overload: 200 % of Rated Load
Operating Temperature Range: -40 °C to +105 °C
Temperature Effect on Output: ±0.0033 % of R.O./°C
Temperature Effect on Zero: ±0.0014 % of R.O./°C

Material Composition & Structure

Sensor Body Material: Stainless steel, hermetically sealed for corrosion resistance.
Mounting Accessories: Yellow chromated steel or optional stainless steel brackets, fork assemblies, and tilt guards.
Structural Feature: Double cantilever beam design allowing a floating/movable load introduction point.
Cable: Typically supplied with 5 m or 10 m shielded 4-conductor cable depending on version (BLH or Nobel standard).

Protection & Certification

Ingress Protection: IP67 (dust-tight and protected against temporary immersion/water washdown).
Hazardous Area Certifications: ATEX, IECEx, FM (cFMus), CSA certified versions available for explosive atmospheres (gas and dust).

Working Principle

Based on strain gauge technology configured in a Wheatstone bridge on a double cantilever stainless steel elastic element.
Applied force deforms the beam slightly, causing a proportional change in resistance translated into a millivolt output signal relative to excitation voltage.
The movable load point design decouples the measurement axis from lateral forces, vibrations, and thermal expansion stresses.

Installation Requirements

Must use the movable load point to ensure the mechanical force vector aligns with the cell’s measurement axis.
Mounting bolts should be tightened using torque-controlled wrenches to avoid over-tightening which distorts the elastic element.
Cables must be routed away from high-current power lines to minimize EMI; shielded cable should be grounded at the indicator/transmitter end only.
Requires zero calibration after mechanical installation and periodically (e.g., every 3–6 months in harsh environments).

Application Scenarios

Batch, blend, and mix system weighing.
Reactor vessel and tank weighing.
Conveyor belt weighing.
Web tension control in paper, film, textile, and steel rolling industries.
Precision force measurement in pharmaceutical, chemical, food & beverage, and mining processes.

Usage Considerations

Avoid continuous operation at the full 20 kN limit; derating to 80% (16 kN) is recommended for long-term stability.
Ensure the selected model matches cable length and connector type during replacement.
Verify hazardous area certification markings if installed in explosive atmospheres.
Protect the cable entry and load cell surface from mechanical impact during handling.

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