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.
Why Choose PTFM-1000V2
Direct Exhaust Measurement – Provides real-time accurate flow readings with no engine interference.
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Wide Flow Range Support – Offers eight interchangeable pitot tube sizes (up to 65 m³/min) matched to engine needs.
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Smart Automation Features – Auto-detects tube type and supports zeroing, purging, and full automation in test cycles.
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Flexible Outputs & Integration – Delivers data via analog (10 Hz), RS-232, or LAN, compatible with standalone or integrated setups.
Key Advantages of PTFM-1000V2
1.
Direct Exhaust Capture
Measures exhaust flow without affecting engine operation by avoiding sample extraction or interference.
2.
Optimized Tube Matching
Choose the best range for each engine—from small passenger cars to heavy-duty engines—for maximum accuracy.
3.
Automation-Ready Design
Automatically identifies and clears the pitot tube for seamless and hands-free testing workflows.
4.
Flexible Data Interfaces
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 | ||
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