- 1 - 12th edition No. SS2-5220-1100 PREX3000 Vector Involute type Pneumatic Differential Pressure Transmitter (Standard type for High and Medium Differential Pressures) Model KDP11/22 OVERVIEW 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. Standard Specifications 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}) Dead band 0.1% F.S. Working pressure -50 kPa to 10 MPa {-0.5 to 100 kgf/cm2} (differs by material of cover) [Refer to Figure 1] Operating temperature Meter body (process fluid) -40 to +120°C Transmitter (ambient) -30 to +80°C [Refer to Figure 1] Operating humidity 10 to 90% RH Overload protection 10 MPa {100 kgf/cm2} (on one side) Construction Dustproof and waterproof meets IEC IP54. NEMA Type 3R. JIS F8001 Class3 splashproof, JIS C0920 rainproof Materials Center body SUS304 Wetted parts of center body SUS316 (diaphragm: SUS316L) SUS316L, Monel, Tantalum 2 1 Specifications are subject to change without notice. “This product is designed for general industrial use.”