Pressure Comparator Pump calibation service

With the aim of serving customers with the best after-sales services, EMIN Vietnam has established the Equipment Inspection - Calibration - Repair Service Center. With the support from numerous equipment manufacturers in the world, EMIN Vietnam possesses well-prepared calibrating instruments. EMIN Vietnam has successfully repaired and calibrated specialized equipment in Vietnam, ensuring the quickness, effectiveness and convenience for customers. Only few technical trading company in Vietnam do possess this technical capacity including EMIN Vietnam.

>> Comparison Tester
- A high precision device for calibrating most pressure sensors, including transducers, transmitters, gauges or pressure switches.

>> Other information
♦ Principle of operation
Checkweights are high performance pressure measurements or standard pressure readings. Using a well-controlled piston gauge system, consisting of a vertically mounted, precisely ground piston and an assembled cylinder, a precisely calibrated weight (force) is applied to the piston Area), which is freely raised in the cylinder.

♦ Tools
There are four basic variations in the compressed air supply; Single pressure, single vacuum, vacuum and double pressure, and high pressure models are controlled by pneumatic oil. Pressure or vacuum is generated by an external source or an optionally constructed hand pump. The hand pump option is not available at pressurizers above 500 psi (35 bar).

♦ Piston cylinders / cylinders
The piston / cylinder assembly is at the heart of the check with the reference weight. They are manufactured from materials with low heat stability and resistance to heat coefficient and strain.

♦ Weight correction
Weight varies significantly with geographic location and this variation has a direct influence on the weight of the weights and the accuracy of the test using the reference weights. Each instrument can be calibrated to local weight at no additional cost. If not specified, the instrument will be calibrated to the Gravity Criterion at 980.665 cm / s2

For further information about calibration service, visit our website at:

For further information and calibration requirements, Please contact

Equipment Inspection - Calibration - Repair Service Center - EMIN Vietnam JSC 

 Adress: No 11, Hoang Cau Moi Street, Trung Liet Ward Dong Da District, Ha Noi City

Email: - Hotline: 097.251.2864 (Mr. Truong)