Tamron MST2000 operation manual Formulas & Conversion Factors, Metric Conversion Factors

FORMULAS & CONVERSION FACTORS OPERATION MANUAL

•ALARM ‘STATUS’ WORD = 206

•Using bi nary di vi sion, di vide the dec i mal word by each bi nary bit value start ing with the most sig- nificant bit value (bit 8 = 128) and then each successive lower bit.

a.206 B 128 = 1 with a re main der of 78 . . . . . . bit 8 (Watchdog timer fault) = 1

b.78 B 64 = 1 with a re main der of 14. . . . . . . . bit 7 (Hard ware fault) = 1

c.14 B 32 = 0 with a remainder of 14 . . . . . . . . bit 6 (ISO comm3 er ror) = 0

d.14 B 16 = 0 with a remainder of 14 . . . . . . . . bit 5 (ISO comm2 er ror) = 0

e.14 B 8 = 1 with a re main der of 6 . . . . . . . . . . bit 4 (ISO comm1 er ror) = 1

f.6 B 4 = 1 with a re main der of 2 . . . . . . . . . . . bit 3 (RTD fault) = 1

g.2 B 2 = 1 with a re main der of 0 . . . . . . . . . . . bit 2 (Over-range) = 1

h.0 B 1 = 0 with a re main der of 0 . . . . . . . . . . . bit 1 (Un der-range) = 0

•The decimal ALARM ‘STATUS’ WORD of 206 in di cates the fol low ing ac tive alarms:

Watchdog timer fault, Hardware fault, ISO Comm1 error, RTD fault and Over-range.

10. FORMULAS & CONVERSION FACTORS

The following formulas are used in the MST2000 software calculations:

•Velocity = 1096845. × DP ÷ Density

•ACFM = Ae × 667.657 × DP × (T ÷ P)

•SCFM = Ae × 23972..677 × DP × (P ÷T)

•LB / HR = SCFM × Standard Density (@68o F) × 60

•Ae or Effective Area (sq. ft) = Kfactor × Nominal Area (sq.ft). Thermo Brandt supplies the Effective Area (Ae) specification with each of its flowmeters.

•Where:

6Ve loc ity is in Feet per Min ute

6DP (Dif fer en tial Pres sure) is in Inches of Wa ter Col umn

6T (Tem per a ture) is in de grees Ran kine (de grees Ran kine = de grees Fahr en heit + 459.67)

6P (Ab so lute pres sure) is in pounds per square inch (PSI)

6Density is in pounds per cu bic foot (Lb/FT3)

6Ae (Ef fec tive Area) is in Square Feet.

Metric Conversion Factors

•Meters per second x 196.850 = Feet per minute

•Bar x 14.5038 = PSIA

•Square me ters x 10.7643 = Square feet

•Millimeters of wa ter col umn B 25.4 = Inches of WaterColumn

•Kilograms per hour x 2.205 = Pounds per hour

•Kilograms per cu bic me terB 16.0136 = Pounds per cubic foot.

•Cu bic meters per hour x 0.5885 = Cubic feet per minute

•(De grees C + 273.15) x 1.8 = de grees Ran kine

•Ae or Ef fec tive area (in square feet) = Kfactor x Nom i nal Area (square me ters) x 0.0929. Thermo Brandt supplies the Ef fec tive Area (Ae) specificationwith each of its flowmeters. The user must con vert to square me ters be fore en ter ing the ef fec tive are pa ram e ter in the ‘E_AREA’ programming menu.

11.

Page 22 MST2000 Multivariable SMARTFLOW ® Transmitter Brandt Instruments, Inc.