top of page


Yantrika Instruments Pvt. Ltd. with 40 years of experience is one of the leading manufacturers in the field of process instrumentation and calibration equipment. It is a professionally managed rapidly growing company with a strong R&D and production team that constantly upgrades the products to the latest innovative design & technology to meet the highest quality, reliability and performance requirements

For more info, kindly visit:


Pressure Comparators

Comparison Test Pumps are lightweight pressure sources that are used to smoothly generate and set pressures at two test points, and the calibration is performed by comparing the result of a master gauge with the gauge under test. The customer needs to additionally order master gauges with these pumps to make use of them.



Site calibration of analog gauges and verification of pressure transmitters or switches.


Standard Accessories: 

1/8″,1/4″,3/8″,1/2″ BSP Adaptors

Instruction Manual, Dust Cover

Spare Seals , Tool Bag

Dust Cover

Operating fluid for oil based instruments only

Optional Accessories:

1/8″,1/4″,3/8″,1/2″ NPT Adaptors

Angle Adaptor for back mounting gauges

Pointer Puller &  Pointer Punch

Operating Principle:

Fluid Pressure generated by a screw pump is made available at two test ports. A suitable master gauge (not part of supply) is fixed at one port and the gauge under test is fixed on the second port.


Special Features:

Range : Vacuum-2000 bar

Accuracy : Depends on master gauge used

Pressure Generation : Direct via ram screw

Weight : 10 kg, 20 kg for Vacuum

Materials of Construction:

Internals: Mainly Stainless steel

Base:  Aluminum


Master Pressure Gauges

Precision Test Pressure Gauges offered by us are easy to use high accuracy pressure indicators. These can be used as reference indicator of pressure with comparison pumps and feature reliable mechanical construction & dial readout. Further, these are designed to deliver high accuracy in readings ± 0.25%F.S.



  • Testing and Calibration Laboratories

  • Test Benches/ Rigs

  • Research & Development

  • As Master Gauges in Process Industries


  • High accuracy (± 0.25% of span)

  • Mirrored band on dial

  • Potection to IP65

  • Pressure ranges up to 2500 bar

  • Supplied with beautiful foam lining carry case with number lock

  • Overload capacity 1.3 times of FS

  • ‘Easylok‘ for protection of the gear mechanism during transport


Get a quote/Book a service!

bottom of page