Calibrate with Confidence
Ralston Instruments gives you everything you need for virtually any pressure calibration process.
Pressure Source/Control
Hand pumps, nitrogen gas controllers or calibration manifolds form the base of each kit.
Quick-test™ Hoses
Low volume, high pressure Quick-test™ hose is included for precise calibrations without wasting media.
Adapters
Kits include a range of standard adapters for connecting to NPT, BSPP or Tube process connections.
Integrated Test Gauge
All kits include an analog or digital test gauge with integrated gauge adapter.
Be prepared with the right combination of components for any calibration
Vacuum
-30 in Hg to 0(-584 mmHg to 0)
Applications:
Vacuum gauge calibration
Absolute pressure measurement
Pressure Media:
Vacuum (supplied from vacuum pump)
Models:
Low Pressure
0 to 100 psi(0 to 7 bar)
Applications:
Calibrating pressure gauges
Pressure transmitter calibration
Airspeed indicator calibration
Pressure Media:
Compressed gas
Models:
Medium Pressure
100 psi to 300 psi(7 bar to 20 bar)
Applications:
Static pressure transmitter calibration
Pressure gauge calibration
Float piston gauges
Pressure Media:
Compressed gas
Models:
High Pressure
300 psi to 5,000 psi(20 bar to 350 bar)
Applications:
Safety relief valve testing
Pressure gauge calibration
Deadweight replacement
Pressure Media:
Compressed Gas
Models:
Ralston has your calibration solution
Our pre-packaged calibration kits are available with a choice of either an analog or digital pressure gauge. Our test gauges have ± 0.25% full scale accuracy and are very durable.









