Sierra Instruments, Inc.
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Sierra - Model AirTrak 628S -Engine Intake Air Mass Flow Meter
AirTrak is a thermal mass flow meter specifically designed to measure engine air intake mass flow rate. The instrument is: Ideal for the toughest transient test cycles where flow excursion can approach 10:1 within less than two seconds. Uses extremely sensitive, 200-millisecond response-time thermal insertion sensor. A flexible solution for constrained piping environments commonly found in today’s engine and vehicle test facilities with integral laminar flow conditioning inside the flow body and wide 15:1 turndown.
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- Ensures accurate and repeatable engine air intake mass flow measurements
- Increase efficiency with fast response time within 200 milliseconds to changes in flow
- High performance in constrained piping with flow profile conditioning elements inside the flow body
- Increase flexibility with wide turndown range
Operating Principal: Thermal dispersion technology for direct mass flow measurement featuring no pressure or temperature compensation needed, no moving parts, low pressure drop, high turndown. Watch the video...
- Specifically designed for engine intake air mass flow rate applications
- Outstanding 15:1 turndown for high accuracy at low idle conditions
- Smart electronics permit field adjustment of critical flow meter settings
- Programmable pulse output for remote totalization
- Minimal flow blockage and low pressure drop
- Field flow-range adjustment, meter validation and diagnostics
- Program transmitter via RS-232 using free user software or with three push-button display interface
- Sierra`s state-of-the-art ISO 9000 calibration facility matches each application for best accuracy
- Flow-range adjustment, and validation and diagnostics
- Field Validation/Configuration to assure operating performance
- Flow totalizer and alarms
- 2 x 12 backlit LCD display totalizer values
- Remote enclosure mounting available
- No moving parts
- Free computer interface software: Download now
- Measure engine intake air and all clean inert gases
- Accuracy: +/- 1% of full scale
- Repeatability of +/- 0.2% of full scale
- Response time 200 milliseconds to achieve 63% of final value
- Pipe sizes from 1.5" (3.8cm) up to 8" (20.3cm)
- Flow range maximum 30,337 lb/hr (13,779 kg/hr)
- 15:1 turndown
- Temperature:
- Gas: -40°F to 176°F (-40°C to 80°C)
- Ambient: -40°F to 120°F (-40°C to 50°C)
- Power supply 15 to 18 VDC (regulated), 625 mA draw maximum
- Output signals: Linear 0–5 VDC and 4-20 mA
- User definable pulse output for totalized flow
- Digital communications solutions include: Modbus RTU
- Enclosure NEMA 4X (IP65); remote electronics mounting available
- CE approved