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  • Ralston FieldLab

    With the Ralston FieldLab, you could run calibration tests whereever you are. It is a flexible portable toolkit that helps you on site. With single button logging of both Device Under Test (DUT) and Reference readings, techs get completely digital logging of test points.Instant tolerance feedback at each point lets you know sooner than later whether to recalibrate. Pressure safety valve crack tests and seat tightness tests can be performed with precision while generating solid data to back up your observations.Follow standard ASME Section 8 or create your own tests to follow your SOPs.

  • Calibration Manifolds

    Calibration Manifolds
    The most economical way of performing static pressure calibrations in the field using nitrogen or other compressed gas.

    • Fine adjustment piston provides precise pressure control instead of trying to make adjustments with a pressure regulator and a needle valve
    • Soft-seated valves make filling and venting the system very precise
    • Compact design allows the manifold, gauge adapter and hoses to fit in the included nylon bag
    • Because pressure is controlled at the device under test, the nitrogen cylinder can be mounted on a truck
    • Low volume Quick-test hose, gauge adapter and process connection reduce gas usage and make nitrogen cylinders last longer
    • Made in U.S.A.

    Nitrogen Calibration Sources
    Self contained unit provides a precise nitrogen source for calibrating differential and static pressure instrumentation using an external pressure calibrator

    • Proprietary pressure balanced fine adjustment piston allows for extremely precise, finger-tip control of pressure at 0.03 psi (2 mbar) or 3000 psi (210 bar) or any range in between.
    • Easily refillable nitrogen cylinder holds enough gas for multiple calibrations
    • Nylon bag to hold hose and fittings attached to inside of lid
    • Includes storage compartment in control panel for pressure reference test gauge
    • Low volume Quick-test hose, gauge adapter and process connection can be attached to NPAK without thread sealant or a wrench
    • Onboard pressure gauges display cylinder and regulated pressure (Accuracy +/-2.5% of full scale)
    • Optional padded strap for field use (NPAK-STRP)
    • Made in U.S.A.


     

  • Ralston Instruments Hoses and Adapters

    Ralston Instruments Quick-test hoses and adapters are designed to provide leak-free connections for use in pressure calibration to 6900 psi (475 bar). Their unique, proprietary design has allowed Ralston Instruments to become a leading supplier of pressure calibration connection products.
    Quick-test hoses come in several standard models. Hoses can be made to order in any length with a large selection of hose ends to choose from. Ralston Instruments also makes a wide variety of process connections that allow the user to connect to virtually any process.

  • Ralston Instruments Hoses and Adapters

    Ralston Instruments Quick-test hoses and adapters are designed to provide leak-free connections for use in pressure calibration to 6900 psi (475 bar). Their unique, proprietary design has allowed Ralston Instruments to become a leading supplier of pressure calibration connection products.
    Quick-test hoses come in several standard models. Hoses can be made to order in any length with a large selection of hose ends to choose from. Ralston Instruments also makes a wide variety of process connections that allow the user to connect to virtually any process.

  • Hydraulic Hand Pump with Gauge Connection-HPGV

    Simple, fast field testing for connecting a calibrator to a process connection. Connect this directly between the equipment to be tested and a reference. No need for a "T" joint.

    • Portable hand operated hydraulic pumps that easily generate up to 5000 psi (350 bar)
    • Two outlet ports allow user to connect to both device under test and external pressure calibrator thus eliminating a tee.
    • Fine Adjustment piston provides an easy way to achieve precise pressure
    • Vent valve is both durable and precise
    • Liquid reservoir holds enough fluid for multiple calibrations
    • Low volume Quick-test hose, gauge adapter and process connection can be attached to pump without thread sealant or a wrench
    • Rugged, all metal construction improves temperature and pressure stability
    • Made in U.S.A.

  • DCAP Pressure Test Pump Standard
  • APGV0000

    Ralston Instruments' Hand Pumps are rugged and portable. Field tested calibration solutions with standard Quick-Test adapters which make connecting to pressure references and the device being calibrated a snap.

  • GAUGE-30HG
  • GAUD-30HG
  • SP0V-15PSIG-M
  • DV0V-0000

    Typically ships in 7-8 weeks.

  • QTVC2 pic
  • NPAK-0000
  • NPAK-TRSO
  • QTHA-HSBG
  • QTHA-KIT0
  • DPOV-0020
  • QTHP-REPK

    Repair kits for hand pumps, calibration manifolds, nitrogen sources, and volume controllers

  • QTHA-FLTS-HC-40 and Replacement Filter
  • LC10-TA