The PREX3000 instruments are pneumatic type transmitters which employ a combination of vector balance mechanism and involute mechanism.
The instruments are featured by high resistance against adverse environments, high turn-down ratio, high accuracy, and ease of maintenance.
Measuring range (continuously adjustable)
KDP11: 0-25 to 0-500 kPa {0-2,500 to 0-50,000 mmH2O}
KDP22: 0-2.5 to 0-53.9 kPa {0-250 to 0-5,500 mmH2O}
Process connection
Rc1/2 or 1/2NPT internal thread
Air supply connection
Rc1/4 or 1/4NPT internal thread
Air supply pressure
140±14 kPa {1.4±0.14 kgf/cm2}
Output
20-100 kPa {0.2-1.0 kgf/cm2}
External load
ID 4 mm × Length 3 m + 20 cm3 or over
Air supply capacity
20 /minute (N) or over, with 6.7 kPa {50 mmHg} change
Air consumption
5 /minute (N) or less (when balanced at output 100%)
Accuracy
KDP11:
±0.5% F.S. (for span 50 to 500 kPa {5,000 to 50,000
mmH2O})
±0.75% F.S. (for span 25 less than 50kPa {2,500 to less
than 5,000 mmH2O})
KDP22:
±0.5% F.S. (for span 5 to 53.9 kPa {500 to 5,500
mmH2O})
±0.75% F.S. (for span 2.5 to less than 5 kPa {250 to less
than 500 mmH2O})