FKT Series Differential Pressure / Speed Sensor Ranges

See table below for the ranges, resolutions and accuracies of all the sensors available for the FKT meter. All speeds were calculated with an air density of 1.2kg/m3 and with a probe of unity coefficient (K=1.0). Units of inH2O are defined at 16°C (60°F). 

 

0.25 inHO Differential Pressure / Speed Sensor

Range

Display Resolution

Accuracy

±0.0622 kPa

0.0001 kPa

±0.0001 kPa

±0.2500 inHO

0.0001 inHO

±0.0006 inHO

±0.467 mmHg

0.001 mmHg

±0.001 mmHg

±0.00902 psi

0.00001 psi

±0.00002 psi

±0.01837 inHg

0.00001 inHg

±0.00004 inHg

0.75 to 10.18 m/sec

0.01 m/sec

±0.15 to ±0.03 m/sec

2.46 to 33.4 ft/sec

0.01 ft/sec

±0.5 to ±0.09 ft/sec

148 to 2004 ft/min

1 ft/min

±30 to ±5 ft/min

 

 

 

0.5 inHO Differential Pressure / Speed Sensor

Range

Display Resolution

Accuracy

±0.1244 kPa

0.0001 kPa

±0.0003 kPa

±0.500 inHO

0.001 inHO

±0.001 inHO

±0.933 mmHg

0.001 mmHg

±0.002 mmHg

±0.01805 psi

0.00001 psi

±0.00004 psi

±0.03674 inHg

0.00001 inHg

±0.00008 inHg

1.06 to 14.4 m/sec

0.01 m/sec

±0.22 to ±0.04 m/sec

3.5 to 47.2 ft/sec

0.1 ft/sec

±0.7 to ±0.1 ft/sec

209 to 2835 ft/min

1 ft/min

±43 to ±7 ft/min

 

 

 

1 inHO Differential Pressure / Speed Sensor

Range

Display Resolution

Accuracy

±0.2488 kPa

0.0001 kPa

±0.0005 kPa

±1.000 inHO

0.001 inHO

±0.002 inHO

±1.866 mmHg

0.001 mmHg

±0.004 mmHg

±0.03609 psi

0.00001 psi

±0.00008 psi

±0.0735 inHg

0.0001 inHg

±0.0002 inHg

1.49 to 20.37 m/sec

0.01 m/sec

±0.31 to ±0.05 m/sec

4.9 to 66.8 ft/sec

0.1 ft/sec

±1 to ±0.2 ft/sec

290 to 4010 ft/min

10 ft/min

±60 to ±10 ft/min


 

 

 

 

5 inHO Differential Pressure / Speed Sensor

Range

Display Resolution

Accuracy

±1.244 kPa

0.001 kPa

±0.003 kPa

±5.00 inHO

0.01 inHO

±0.01 inHO

±9.33 mmHg

0.01 mmHg

±0.02 mmHg

±0.1805 psi

0.0001 psi

±0.0004 psi

±0.3674 inHg

0.0001 inHg

±0.0008 inHg

3.3 to 45.5 m/sec

0.1 m/sec

±0.7 to ±0.1 m/sec

10.8 to 149.3 ft/sec

0.1 ft/sec

±2.2 to ±0.4 ft/sec

650 to 8960 ft/min

10 ft/min

±130 to ±20 ft/min

 

 

 

12 inHO Differential Pressure / Speed Sensor

Range

Display Resolution

Accuracy

±2.986 kPa

0.001 kPa

±0.007 kPa

±12.00 inHO

0.01 inHO

±0.03 inHO

±22.39 mmHg

0.01 mmHg

±0.05 mmHg

±0.433 psi

0.001 psi

±0.001 psi

±0.882 inHg

0.001 inHg

±0.002 inHg

5.2 to 70.6 m/sec

0.1 m/sec

±1.1 to ±0.2 m/sec

17.1 to 231.6 ft/sec

0.1 ft/sec

±3.5 to ±0.6 ft/sec

1020 to 13900 ft/min

10 ft/min

±210 to ±40 ft/min

 

 

 

20 inHO Differential Pressure / Speed Sensor

Range

Display Resolution

Accuracy

±4.98 kPa

0.01 kPa

±0.01 kPa

±20.00 inHO

0.01 inHO

±0.04 inHO

±37.32 mmHg

0.01 mmHg

±0.08 mmHg

±0.722 psi

0.001 psi

±0.002 psi

±1.470 inHg

0.001 inHg

±0.003 inHg

6.7 to 91.1 m/sec

0.1 m/sec

±1.4 to ±0.2 m/sec

22 to 298.9 ft/sec

0.1 ft/sec

±4.5 to ±0.8 ft/sec

1320 to 17930 ft/min

10 ft/min

±270 to ±50 ft/min

 

* Compressible flow with reduced speed accuracy for V > 100m/s (328ft/s).

** Limited range due to supersonic flow forming a shock wave on the nose of the Pitot Static tube.


 

 

 

 

30 inHO Differential Pressure / Speed Sensor

Range

Display Resolution

Accuracy

±7.47 kPa

0.01 kPa

±0.02 kPa

±30.00 inHO

0.01 inHO

±0.07 inHO

±56.0 mmHg

0.1 mmHg

±0.1 mmHg

±1.083 psi

0.001 psi

±0.002 psi

±2.204 inHg

0.001 inHg

±0.005 inHg

8.2 to 111.6 m/sec

0.1 m/sec

±1.7 to ±0.3 m/sec

26.9 to 366.1 ft/sec

0.1 ft/sec

±5.5 to ±0.9 ft/sec

1610 to 21970 ft/min

10 ft/min

±330 to ±60 ft/min

 

 

 

40 inHO Differential Pressure / Speed Sensor

Range

Display Resolution

Accuracy

±9.95 kPa

0.01 kPa

±0.02 kPa

±40.00 inHO

0.01 inHO

±0.09 inHO

±74.6 mmHg

0.1 mmHg

±0.2 mmHg

±1.444 psi

0.001 psi

±0.003 psi

±2.939 inHg

0.001 inHg

±0.006 inHg

9.4 to 128.8 m/sec*

0.1 m/sec

±1.9 to ±0.3 m/sec

31 to 423 ft/sec*

1 ft/sec

±6 to ±1 ft/sec

1850 to 25350 ft/min*

10 ft/min

±380 to ±70 ft/min

 

 

 

60 inHO Differential Pressure / Speed Sensor

Range

Display Resolution

Accuracy

±14.93 kPa

0.01 kPa

±0.03 kPa

±60.0 inHO

0.1 inHO

±0.1 inHO

±112.0 mmHg

0.1 mmHg

±0.2 mmHg

±2.165 psi

0.001 psi

±0.005 psi

±4.41 inHg

0.01 inHg

±0.01 inHg

11.6 to 157.8 m/sec*

0.1 m/sec

±2.4 to ±0.4 m/sec

38 to 518 ft/sec*

1 ft/sec

±8 to ±1 ft/sec

2280 to 31060 ft/min*

10 ft/min

±470 to ±80 ft/min

 

* Compressible flow with reduced speed accuracy for V > 100m/s (328ft/s).

** Limited range due to supersonic flow forming a shock wave on the nose of the Pitot Static tube.


 

 

 

 

130 inHO Differential Pressure / Speed Sensor

Range

Display Resolution

Accuracy

±32.35 kPa

0.01 kPa

±0.07 kPa

±130.0 inHO

0.1 inHO

±0.3 inHO

±242.6 mmHg

0.1 mmHg

±0.5 mmHg

±4.69 psi

0.01 psi

±0.01 psi

±9.55 inHg

0.01 inHg

±0.02 inHg

17 to 195.3 m/sec**

0.1 m/sec

±3.5 to ±0.6 m/sec

56 to 641 ft/sec**

1 ft/sec

±11 to ±2 ft/sec

3300 to 38400 ft/min**

100 ft/min

±700 to ±100 ft/min

 

 

 

200 inHO Differential Pressure / Speed Sensor

Range

Display Resolution

Accuracy

±49.8 kPa

0.1 kPa

±0.1 kPa

±200.0 inHO

0.1 inHO

±0.4 inHO

±373.2 mmHg

0.1 mmHg

±0.8 mmHg

±7.22 psi

0.01 psi

±0.02 psi

±14.70 inHg

0.01 inHg

±0.03 inHg

21.1 to 195.3 m/sec**

0.1 m/sec

±4.3 to ±0.7 m/sec

69 to 641 ft/sec**

1 ft/sec

±14 to ±2 ft/sec

4200 to 38400 ft/min**

100 ft/min

±900 to ±100 ft/min

 

 

 

400 inHO Differential Pressure / Speed Sensor

Range

Display Resolution

Accuracy

±99.5 kPa

0.1 kPa

±0.2 kPa

±400.0 inHO

0.1 inHO

±0.9 inHO

±746 mmHg

1 mmHg

±2 mmHg

±14.44 psi

0.01 psi

±0.03 psi

±29.39 inHg

0.01 inHg

±0.06 inHg

30 to 195 m/sec**

1 m/sec

±6 to ±1 m/sec

98 to 640 ft/sec**

1 ft/sec

±20 to ±3 ft/sec

5900 to 38400 ft/min**

100 ft/min

±1200 to ±200 ft/min

 

* Compressible flow with reduced speed accuracy for V > 100m/s (328ft/s).

** Limited range due to supersonic flow forming a shock wave on the nose of the Pitot Static tube.


FKT Series Absolute, Temperature, Rel Humidity, and Density Ranges

 

 

 

15 psi Absolute Pressure Sensor (Default)

Range

Display Resolution

Accuracy

15 to 115 kPa

0.01 kPa

±0.58 kPa

60.3 to 462.1 inHO

0.1 inHO

±2.3 inHO

112.5 to 862.4 mmHg

0.1 mmHg

±4.3 mmHg

2.176 to 16.679 psi

0.001 psi

±0.083 psi

4.43 to 33.96 inHg

0.01 inHg

±0.17 inHg

 

 

 

30 psi Absolute Pressure Sensor (Upgrade)

Range

Display Resolution

Accuracy

15 to 207 kPa

0.1 kPa

±1 kPa

60.3 to 831.9 inHO

0.1 inHO

±4.2 inHO

112.5 to 1552.3 mmHg

0.1 mmHg

±7.8 mmHg

2.18 to 30.02 psi

0.01 psi

±0.15 psi

4.43 to 61.13 inHg

0.01 inHg

±0.31 inHg

 

 

 

Temperature Reader

Range

Display Resolution

Accuracy

-200 to 816°C

0.1°C

±1°C

-328 to 1500°F

0.1°F

±1.8°F

 

 

 

Relative Humidity

 

 

Range

Display Resolution

Accuracy

0 to 99%

1 %

±2 %

 

 

 

Density (with 15 psi Absolute Pressure Sensor)

Range

Display Resolution

Accuracy

0.05 to 5.48 kg/m³

0.01 kg/m³

±0.04 kg/m³

 

 

 

Density (with 30 psi Absolute Pressure Sensor)

Range

Display Resolution

Accuracy

0.05 to 9.86 kg/m³

0.01 kg/m³

±0.07 kg/m³