HORIBA PTFM-1000V2 Pitot Tube Exhaust Flow Meter

Configuration

Interface unit connected to pitot tube via umbilical cable. Pitot tube can be standard (0 - 230ºC) or high temperature (0 - 900ºC)

Flow Rate Accuracy

Within ±1 % of full scale or ±1.5 % of readings (at flow rate of 20 % of full scale)

Linearity

Either of the following:
(a) Within ±2.0% of full scale
(b) Intercept: |a0| ≤ 1.0% of full scale
Slope: 0.98 ≤ a1 ≤ 1.02
Standard estimated error: SEE ≤ 2.0% of full scale
Coefficient of determination: R2 ≥ 0.990

Response Time

<1ms

Tube Attachments

Pitot tube size should be selected from the following list, according to tailpipe diameter and exhaust flow rate:

Pilot Tube

Tube Diameter

Max Flow

A-type

32.0 mm

2.0 m³/min

B-type

42.7 mm

4.5 m³/min

C-type

60.5 mm

10 m³/min

D-type

76.3 mm

15 m³/min

E-type

89.1 mm

20 m³/min

F-type

101.6 mm

30 m³/min

G-type

127.0 mm

45 m³/min

H-type

152.4 mm

65 m³/min

Noise

Within 2.0% of full scale (at flow rate of 20% of full scale)

Repeatability

Within ±2.0% of readings (at flow rate of 20% of full scale)

Calibration

Interface calibrated every 12 months. Recommended pitot tube calibration every 12 months