PTFM-1000V2

Pitot Tube Exhaust Flow Meter

The PTFM-1000V2 is a standalone exhaust gas flow analyzer using the proven pitot tube measurement principle. With high-frequency pressure sampling (1 kHz), it accurately captures highly pulsating exhaust flows—including reverse flow—while offering real-time display and seamless integration with analyzer systems.

PTFM-1000V2

Pitot Tube Exhaust Flow Meter

Why Choose PTFM-1000V2

Direct Exhaust Measurement – Provides real-time accurate flow readings with no engine interference.
Wide Flow Range Support – Offers eight interchangeable pitot tube sizes (up to 65 m³/min) matched to engine needs.
Smart Automation Features – Auto-detects tube type and supports zeroing, purging, and full automation in test cycles.
Flexible Outputs & Integration – Delivers data via analog (10 Hz), RS-232, or LAN, compatible with standalone or integrated setups.

Key Advantages of PTFM-1000V2

Direct Exhaust Capture

Real-Time Flow Data

Measures exhaust flow without affecting engine operation by avoiding sample extraction or interference.

Optimized Tube Matching

Eight Tube Sizes

Choose the best range for each engine—from small passenger cars to heavy-duty engines—for maximum accuracy.

Automation-Ready Design

Auto-Detect + Auto-Purge

Automatically identifies and clears the pitot tube for seamless and hands-free testing workflows.

Flexible Data Interfaces

Analog, RS-232, LAN

Offers versatile connectivity options for legacy systems and modern networked test environments.

Technical Specifications of PTFM-1000V2

Test vehicle/engine	Diesel (HDD, LDD), Gasoline, LPG and CNG vehicles, Ethanol, Propane, Butane
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