Pressure Calibration Nitrogen Sources
NPAK (3000 psi / 210 bar)
Specifications
NPAK connection type
Maximum pressure
Pressure media
Fine adjust resolution
Mechanical rotation
Operating temperature range
Cylinder capacity
Cylinder pressure gauge
Regulated pressure gauge
Over pressure relief
Reference connection (brass)
Quick-test hose 1 (brass ends)
Quick-test hose 2 (brass ends)
Process connection (brass)
Inlet port (stainless steel)
Outlet ports (stainless steel)
Construction
Internal connections
Case
Seal material
Dimensions
Weight
National Pipe Thread (NPT)
3000 psi (210 bar)
Compressed nitrogen
± 0.0005 psi (0.035 mbar)
42 turn (pressure balanced)
0º to 130ºF (-18º to 56º C)
15.3 ft³ (430 l)
2.5” (6.5 cm) psi / bar scale, ± 0.5% full scale accuracy
2.5” (6.5 cm) psi / bar scale, ± 0.5% full scale accuracy
3200 psi (221 bar) relief pressure
See below
6 ft (183 cm) long (QTQT-HOS-6’)
3 ft (92 cm) long (QTQT-HOS-3’)
(2) 1/4” male NPT (QTHA-2MB0)
Male Quick-test with check-valve, cap and chain
(2) Male Quick-test with cap, and chain
Aluminum, brass, plated steel
Stainless steel tubing, tube fittings
Vented high impact ABS plastic
Buna-N, Teflon™, Delrin™
18.5 x 14.6 x 7.5 in (47 x 37 x 19 cm)
28.8 lb (13.0 kg)
British Parallel Thread (BSPP)*
3000 psi (210 bar)
Compressed nitrogen
± 0.0005 psi (0.035 mbar)
42 turn (pressure balanced)
0º to 130ºF (-18º to 56º C)
15.3 ft³ (430 l)
2.5” (6.5 cm) psi / bar scale, ± 0.5% full scale accuracy
2.5” (6.5 cm) psi / bar scale, ± 0.5% full scale accuracy
3200 psi (221 bar) relief pressure
See below
2 m (6.6 ft) long (QTQT-HOS-2m)
1 m (3.3 ft) long (QTQT-HOS-1m)
(2) 1/4” female BSPP (QTHA-2FB0-RG)
Male Quick-test with check-valve, cap and chain
(2) Male Quick-test with cap, and chain
Aluminum, brass, plated steel
Stainless steel tubing, tube fittings
Vented high impact ABS plastic
Buna-N, Teflon™, Delrin™
18.5 x 14.6 x 7.5 in (47 x 37 x 19 cm)
28.8 lb (13.0 kg)
Ordering Information
NPAK calibration source NPT connections
Model
NPAK-1MBA-6’-3’
NPAK-2MBA-6’-3’
NPAK-2FBA-6’-3’
NPAK-0000-0-0
Description
1/8” male NPT gauge adapter (QTHA-1MBA), 2 hoses, 2 process connections
1/4” male NPT gauge adapter (QTHA-2MBA), 2 hoses, 2 process connections
1/4” female NPT gauge adapter (QTHA-2FBA), 2 hoses, 2 process connections
NPAK only, no gauge connection, no hoses, no process connections
NPAK calibration source BSPP connections*
Model
NPAK-2FBA-RG-2m-1m
NPAK-3FBA-RG-2m-1m
NPAK-4FBA-RG-2m-1m
Description
1/4” female BSPP gauge adapter (QTHA-2FBA-RG), 2 hoses, 2 process connections
3/8” female BSPP gauge adapter (QTHA-3FBA-RG), 2 hoses, 2 process connections
1/2” female BSPP gauge adapter (QTHA-4FBA-RG), 2 hoses, 2 process connections
* Not for sale in North American market
For accessories, repair kits and hoses see page 17. For a complete list of accessories and parts see product manual or detailed specification sheet.
For a list of the most commonly used gauge and process connections see page 18. For a complete list refer to Ralston Instruments
Pressure
Connection
catalog. Contact your Ralston Instruments dealer or the factory for information on reference gauges and pressure calibration kits.
R al ston I ns truments, LLC
w w w. ral sto nins t.com
1. 8 00. 3 47.6575
RALSTON [ RALSTON INSTRUMENTS. ]
