Endress+Hauser Proline Prosonic Flow P 500 - Page 25

Proline Prosonic Flow P 500 HART Mounting
Endress+Hauser 25
Operating frequency selection
The sensors of the measuring device are available with adapted operating frequencies. For
the resonance behavior of the measuring pipes, these frequencies are optimized for
different properties of measuring pipes (material, pipe wall thickness) and media
(kinematic viscosity). If these properties are known, an optimum selection can be made
according to the following tables
3)
.
Measuring pipe material Nominal diameter of measuring
pipe
Recommendation
Steel, cast iron
< DN 65 (2½") C-500-A
≥ DN 65 (2½") Table for measuring pipe material: steel, cast
iron →  25
Plastic
< DN 50 (2") C-500-A
≥ DN 50 (2") Table for measuring pipe material: plastic
→  26
Glass-fiber reinforced
plastic
< DN 50 (2") C-500-A (with restrictions)
≥ DN 50 (2") Table for measuring pipe material: glass-fiber
reinforced plastic →  26
Order code for "Sensor version", options AG, AH: To comply with the measurement
accuracy specifications of the high-temperature sensors, these sensors may only be
installed on metallic pipes!
Further selection criteria are provided in SD03088D (Special Documentation for high-
temperature applications).
Measuring pipe material: steel, cast iron
Measuring pipe wall thickness [mm (in)]
Kinematic viscosity cSt [mm
2
/s]
0 < v ≤ 10 10 < v ≤ 100 100 < v ≤ 1000
Converter frequency (sensor version/number of traverses)
1)
1.0 to 1.9 (0.04 to 0.07) 2 MHz (C-200 / 2) 2 MHz (C-200 / 1) 2 MHz (C-200 / 1)
> 1.9 to 2.2 (0.07 to 0.09) 1 MHz (C-100 / 2) 1 MHz (C-100 / 1) 1 MHz (C-100 / 1)
> 2.2 to 2.8 (0.09 to 0.11) 2 MHz (C-200 / 2) 1 MHz (C-100 / 1) 1 MHz (C-100 / 1)
> 2.8 to 3.4 (0.11 to 0.13) 1 MHz (C-100 / 2) 1 MHz (C-100 / 1) 1 MHz (C-100 / 1)
> 3.4 to 4.2 (0.13 to 0.17) 2 MHz (C-200 / 2) 2 MHz (C-200 / 1) 1 MHz (C-100 / 1)
> 4.2 to 5.9 (0.17 to 0.23) 1 MHz (C-100 / 2) 1 MHz (C-100 / 1) 0.3 MHz (C-030 / 2)
> 5.9 (0.23) Selection according to table: "Measuring pipe material: steel, cast iron > 5.9 mm (0.23 in)"
1) Table shows a typical selection: In critical cases (large pipe diameter, liner, gas or solid inclusions) the optimum sensor type may differ from these
recommendations.
Measuring pipe material: Steel, cast iron with wall thicknesses > 5.9 mm (0.23 in)
Nominal diameter [mm (")]
Kinematic viscosity cSt [mm
2
/s]
0 < v ≤ 10 10 < v ≤ 100 100 < v ≤ 1000
Converter frequency (sensor version/number of traverses)
1)
15 to 50 (¹⁄₂ to 2) 5 MHz (C-500)
> 50 to 300 (2 to 12) 2 MHz (C-200) 1 MHz (C-100) 1 MHz (C-100)
3) Recommendation: product sizing in Applicator →  192