The Model PKII is a self-regulating, portable, primary type pressure standard designed for use in ranges
The Model PKII is a self-regulating, portable, primary type pressure standard designed for use in ranges from 4" H2O through 30 psi. The PKH is self-contained in a rugged plastic case designed for ¡°closed-case¡± operation, eliminating wind problems. The weights are stacked in foam pockets in the case for convenient handling. Additional space is provided in the case and cover for accessory equipment and tools.
SPECIFICATIONS (Additional Ranges and Accuracies Available)
Accuracy
¡¾0.05%; optional accuracy .025% and .015% of indicated reading. Stainless steel weights. Calibrated for International Standard Gravity 980.665 Gals. (cm/sec2) or user's local gravity.
¡¾0.5%, with non-magnetic die cast alloy weights available as an economical alternative in non-corrosive environments. Calibrated at U.S. Mean Gravity 980.000 Gals. (cm/sec2)
Repeatability
.005% of output reading
Temperature Coefficient
.00167% of output pressure per ¡ÆC, based on 23¡ÆC
Supply Pressure
Instrument quality air per ISA Quality Standard S7.3. Maximum: 100 psi. Minimum: 30 psi or 150% of output pressure, whichever is greater
Flow Rate
1.0 SCFH at 4" H2O output, 11.0 SCFH at 30 psi output
Case Size
131/8" x 91/4" x 63/8" on 4"-104" H2O and 4"-254" H2O testers, and 131/8" x 81/4" on 4"-854" H2O testers.
Total Weight
14 to 23 lbs. (1/4" tube fitting)
Optional Ranges
Other Ranges available, including gm/cm_, mbar, bar, kPa cmH2O, inHg Medical units for use with Oxygen