Endress+Hauser Instrument Calibration Services in Vietnam

Calibration of measurement instruments is a critical factor that helps businesses maintain accuracy, process stability, and the quality of final products. As the only authorized representative of Endress+Hauser for calibration services in Vietnam, NK Engineering provides professional, fast, and precise calibration solutions for a wide range of industries.

Certificate authorized service and calibration provider of Endress+Hauser

ISO/IEC 17025

1.   General Introduction to Calibration Services

In industrial production, measurement instruments operating with incorrect accuracy can lead to various issues: material loss, inconsistent product quality, process interruption, or failure to meet quality assessment requirements. Therefore, periodic calibration is essential to maintain the reliability of the entire system.

NK Engineering currently provides calibration services for Endress+Hauser instruments, including:

• • Flow measurement instruments
  • Pressure measurement instruments
  • Temperature measurement instruments
  • Liquid analysis instruments such as pH, conductivity, dissolved oxygen, COD, TOC, etc.

Depending on the operational requirements and customer needs, calibration services can be performed either at the customer’s factory or at NK Engineering’s workshop.

2.  Scope of Calibratable Instruments

2.1. Flow Measurement Instruments

• • Measuring range: 0.3 – 180 m³/h
  • Standard accuracy: ±0.05%
  • Calibration equipment: Coriolis reference meter

2.2. Temperature Measurement Instruments

• • Measuring range: –25 to 150°C
  • Accuracy: ±0.1°C
  • Calibration equipment: Beamex MC6

2.3. Pressure Measurement Instruments

• • Measuring range: –1 to 120 bar
  • Accuracy: ±0.01%
  • Calibration equipment: Beamex MC6

2.4. pH Measurement Instruments

• • Measuring range: 0 – 14 pH
  • Accuracy: ±0.01 pH
  • Calibration equipment: Standard buffer solutions

2.5. Conductivity Measurement Instruments

• • Measuring range: 0 – 1000 mS
  • Accuracy: ±1%
  • Calibration equipment: Conductivity standard solutions

3.  Standards – Equipment – Post-Calibration Documentation

3.1. Standards Applied in Calibration Services

NK Engineering’s calibration services strictly comply with:

• • ISO/IEC 17025:2005: General requirements for the competence of testing and calibration laboratories, including sampling
  • Regulations of the Directorate for Standards, Metrology and Quality of Vietnam
  • Endress+Hauser standards: fast response in equipment availability, supporting accessories, transportation procedures, and well-trained service engineers

These ensure that calibration results are accurate, transparent, and aligned with the requirements of auditing and regulatory bodies.

3.2. Equipment Used for Calibration Services

We utilize internationally certified reference equipment:

• • Coriolis master flowmeter
  • Beamex MC6 calibrator
  • Standard pH and EC solutions
  • Specialized diagnostic tools from Endress+Hauser

Additionally, all reference instruments and calibration tools used by NK Engineering are sent annually to Endress+Hauser factories in Germany for recalibration and certification to ensure high accuracy according to international metrology standards.

3.3. Documentation Provided After Calibration

After completing the calibration service, NK Engineering provides customers with:

• • Calibration label
  • Calibration certificate
  • Measurement report
  • Traceability records
  • Operational guidance or technical recommendations (if any)

These documents help customers meet requirements for audits, ISO assessments, and regulatory compliance.

4.  Calibration Procedure

NK Engineering’s calibration procedure is standardized according to international requirements, including:

• • Visual inspection & verification of instrument operating conditions
  • Connecting the instrument to reference equipment
  • Performing measurements and recording results
  • Evaluating deviations and recalibrating the instrument if errors exceed permissible limits
  • Recording results – preparing reports – issuing certificates – applying calibration labels

Each step is carried out by engineers trained directly by Endress+Hauser.

5.  Customer Benefits

• • Fast and flexible service adapted to production schedules
  • On-site calibration reduces downtime
  • Minimizes operational and maintenance risks
  • Clear, transparent results
  • Long-term cost optimization through accurate equipment performance

6.  Technical Capabilities of NK Engineering

NK Engineering is the sole Endress+Hauser Authorized Service Calibration Provider (ASCP) in Vietnam. Our engineers receive regular training at:

• • Endress+Hauser Training Center in Switzerland
  • Regional Training Center in Singapore
  • Endress+Hauser global manufacturing facilities

Training Certificates

Additionally, NK Engineering possesses a highly experienced engineering team working across various industries:

• • Food & Beverage
  • Oil & Gas – Chemicals
  • Pharmaceuticals
  • Water & Wastewater Treatment

If you need NK Engineering’s calibration services, please contact us: