Date Download Description

290 Birch Street (Brea, CA)

Main Facility
2950 Birch Street
Brea, CA 92821
T: +1.714.528.2301
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Since 1964, Volumetrics has been a premier provider of test equipment and calibration services for the nuclear power industry. In 1998, Curtiss-Wright Nuclear purchased the Volumetrics product line and has continued to provide the industry with accurate and reliable local leak rate monitors.

The Volumetrics Model 14380 Leak Rate Monitor is a portable, mass flow leak measurement device, designed for local leak rate testing (LLRT) in accordance with ANS 56.8. The 14380 can measure leakage rates utilizing either make up flow or pressure decay methodologies.

The 14380 employs a microprocessor and digital electronics provide unmatched performance. With flow accuracies to ±1.0% and pressure accuracies to ±0.1%, the 14380 exceeds the industry requirements. Standard features such as auto calibration, field selectable engineering units and over/under range alerts provide user-friendly operation.

Key Features and Benefits

Digital, Microprocessor Based Design User friendly prompts simplify operation
Thermal Mass Flowmeters Provide actual mass flow readings without the need for corrections
AutCalibration Simplifies and shortens the time required tcalibrate unit
Over / Under Range Alarms Lets the user know when tchange ranges for best accuracy
AutCalibration Simplifies and shortens the time required tcalibrate unit
Over / Under Range Alarms Lets the user know when tchange ranges for best accuracy
Stable Reading Indication Alerts user that process has stabilized, eliminating uncertainty

Principles of Operation

A predetermined test pressure is maintained within the test volume using a precision pressure regulator. For makeup flow, after the test gas has stabilized within the test volume, a maintenance flow through the system compensates for any leakage in the test volume. This maintenance flow is equal tthe amount of leakage in the test volume, and is measurement and displayed by the precision mass flowmeters.

In pressure decay applications, after the test gas has stabilized, the instrument is isolated from the test volume except for the pressure sensor. This sensor measures the drop in pressure caused by a leak within the test volume. This pressure loss, over time, is directly related tthe leakage rate.

Thermal mass flowmeters allow for direct reading without requiring corrections for temperature or pressure. These flowmeters provide high accuracy and responsiveness and can withstand pressurization and flow fluctuations without damage.

General Specifications

Electrical Power Requirements: 110 VAC, 50/60 Hz; 12 VDC Battery (optional)
Test Media: Nitrogen or Instrument air
Leakage Flow Rates Ranges:
  • Low:
    • 0 - 20 sccm
    • 0 - 200 sccm
    • 0 - 2,000 sccm
  • Med:
    • 0 t200 sccm
    • 0 t2,000 sccm
    • 0 t20,000 sccm
    • High: t200 SLM
    • Extended: t400SLM
Readout: (4) Vacuum Fluorescent Displays, (3) Flow, and (1) Pressure
Accuracy: Flow - ±1% of full scale Pressure
- ±.25% full scale
(±0.1% full scale available for pressure)
Repeatability: Pressure - ±.10% of full scale
Resolution: 1 Part in 65,535
Working Pressure Range: 60 - 100 psig
Maximum Inlet Pressure: 150 psig
Operating Temperature Range: 50° to 110°F (test gas and ambient)
Connection Ports: 3/8" Quick disconnects
1/4" Quick disconnects (optional)
Case Material: Powder coated, Aluminum
Case Dimensions: 17.0W" x 13.0H" x 11.0D"
Weight: 29.0 lbs.
Calibration Intervals: 6 Months

Plant Design


Typical Plant Applications

  • Isolation Valves
  • Containment Hatches
  • Check Valves
  • Electrical Penetrations
  • Airlocks