LLRT Instrumentation by Graftel

The Model 9623 Local Leakage Rate Testing System is a compact, light weight and rugged instrument used for performing flow make-up or pressure decay Type B and C tests on valves, flanges, airlocks and other containment barriers.
This state-of-the-art unit utilizes all digital flow instrumentation. The microprocessor based laminar flow elements may be relied upon to accurately and repeatability
measure air or nitrogen flow. The user may custom specify the three ranges desired, from 500 sccm to 100 SLM full scale.

The monitor is powered by 12 VDC. This may be supplied by either the included rechargeable battery pack or by the power adapter/re-charger with wall plug. Up to 40 hours of operation may be expected on a single three hour charge.

A high accuracy digital pressure gauge is used to measure the test volume's pressure. The pressure gauge may be any full scale desired. The standard accuracy rating is 0.25% FS this may be increased at no additional cost to 0.05% FS. The pressure sensor may be subjected to up to 5X overpressure with no effect upon calibration.

Flow rates are direct reading in units switchable between scfh or sccm. Either air or nitrogen may be used. Pressure and temperature effects are automatically compensated for, no correction factors are ever required.

Spot checks of the flowmeters accuracy may be performed using the monitor’s built-in flow check nozzles. Each nozzle is sized to flow approx. 75% of its meter’s full scale flow at test pressure. The expected flow at test pressure may then be compared against the flow rate displayed. A 1% calibration may be performed by a simple panel adjustment of each meter’s span pot. A more accurate calibration may be performed by using the included PC calibration software and downloading a breakpoint table directly into the monitor’s nonvolatile memory.

OPTIONS

NON-VENTING
The monitor may be ordered with the non-venting option for use in highly contaminated
environments. This option uses a custom built non-venting, non-bleeding pressure
regulator with a spring loaded inlet check valve. This arrangement precludes the
possibility of back-flowing any contamination into the monitor.
QUICK FILL MANIFOLD
This manifold mounts in the case cover and allows for rapid filling and venting large
test volumes.
SERIAL OUTPUT WITH REMOTE DISPLAY
All monitors have a serial output for temperature, pressure, flow and fluid type. The
optional software package allows the user to record, display, and plot the test data in a
windows environment.

MODEL 9623 LOCAL LEAKAGE RATE MONITOR SPECIFICATIONS
Weight: Approx 15 Lbs.
Power: 12 VDC From Included Battery Pack or DC Adaptor
Display: 4 line LCD
Push button backlight
Serial Output: RS-232 or RS-485 8/N/1 9600 baud
Calibration Interval: One year
Pressure Regulator: Venting or non-venting, user specified
Outlet Pressure Range: 0.5 to 90 psig, user specified
Maximum Inlet Pressure: 120 psig
Inlet And Outlet: 1/4" or 3/8" Compression Fittings
Flow Check Nozzles: One nozzle for each range

Pressure:
Range: 0 to 100 psig, (or user specify other range)
Accuracy: 0.25% Full Scale
Resolution: 0.02 psi
Repeatability: 0.1 psi
Calibration Interval 10 years

Flow: Laminar Flow Elements:
Fluid: Air or Nitrogen
Accuracy: 1% of Full Scale
Repeatability: 0.5% of Full Scale
Ambient Temperature: 32° to 122° F
Ranges: Three User Specified Ranges

For more information about Graftel's innovative LLRT instrumentation, please feel fee to either call or email us for more details.

Graftel, Inc.
870 Cambridge Drive
Elk Grove Village, IL. 60007
Ph. 847.364-2600 Fax. 847.364-2899