Air Monitoring General Purpose (AVT55) Windowless (AVT65)

Air Monitoring
General Purpose (AVT55)
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Protected probe tip
Rugged ceramic sensor
Wide range of measurement applications
Fast response time
Windowless (AVT65)
Model AVT55
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Less flow blockage
Ideal for measuring in confined spaces
Fast response time
AVT55
Omnidirectional (AVT75)
AVT65
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AVT75
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Omnidirectional probe tip
Accurate at low velocities from 0.05 to 0.5 m/s
(10 to 100 ft/min)
Ideal for unknown or varying flow direction
Applications
Air Velocity Transducers
Models AVT55, AVT65, and AVT75
The AVT55, AVT65, and AVT75 Air Velocity Transducers are ideal
for both temporary and permanent installations for air velocity
measurements in research and development labs, manufacturing
processes, and other applications. The full–scale range, signal output,
and time constant are user selectable and can be easily changed to
meet the needs of your application.
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Accurate. Reliable. Every Time.
Comfort and draft studies
Critical environment installations (e.g., clean rooms
and hospitals)
Diffuser design analysis
Monitoring drying processes
Monitoring air flows in tunnels and subways
Used as a standard in wind tunnels and calibration facilities
Environmental monitoring in greenhouses and
IAQ applications
General engineering applications
Air Monitoring
Air Velocity Transducers
Models AVT55, AVT65, AVT75
All models contain on-board electronics and calibration curves
that provide a linear signal output. This linear signal is sent out as
either a current (mA) or a voltage (V) signal, allowing output to a
variety of data loggers or data acquisition systems. In addition,
the current and voltage output ranges are user-selectable for
your convenience.
6.0 cm (2.35 in)
Cable
5.0 m (16.4 ft)
Specifications
8.0 cm
(3.16 in.)
Models AVT55, AVT65, AVT75
Accuracy
AVT55
AVT65
AVT75
±2.0% of reading1, ±0.5% of full scale of selected
range
±2.0% of reading1, ±0.5% of full scale of selected range
±3.0% of reading2, ±1.0% of full scale of selected
range
12.6 cm
(4.95 in)
AVT65/75
6.4 mm
(.25 in.)
Field Selectable Range
AVT55 and AVT 65 0.125 m/s to 1.0, 1.25, 1.50, 2.0, 2.5, 3.0, 4.0, 5.0,
7.5, 10.0, 12.5, 15.0, 20.0, 25.0, 30.0, 40.0,
50.0 m/s (25 ft/min to 200, 250, 300, 400, 500, 750,
1,000, 1,250, 1,500, 2,000, 2,500, 3,000, 4,000, 5,000,
7,500, 10,000 ft/min)
AVT75
0.05 m/s to 0.5, 0.75, 1.0, 1.25, 1.50, 2.0, 2.5 m/s
(10 ft/min to 100, 125, 150, 200, 250, 300, 400,
500 ft/min)
Repeatability
AVT55 and AVT 65
AVT75
<±1.0% of reading3
N/A
Response to Flow
AVT55 and AVT 65
AVT75
0.2 sec.4
0.2 sec.5
7.5 cm (3 in.), 15.0 cm (6 in.)
22.5 cm (9 in.), 30.0 cm (12 in.)
Resistance
Signal
Time Constant
0.127 to 50.8 m/s (25 to 0.051 to 2.54 m/s (10 to
10,000 fpm), selectable
500 fpm), selectable
Accuracy
±(2% of reading at 18 to ±(3% of reading at 20 to
28°C (64.4-82.4°F) + 26°C ( 68.0-82.4°F) +1%
0.5% of full scale of
of full scale of selected
selected range)
range)
Response time
Input power
Voltage mode: less than 1 ohm, 20 mA max source
current
Current mode: 500 ohms maximum load
Field selectable 0–20 mA, 4–20 mA, 0–5V, 0–10V,
20–10V
Field selectable 0.05 to 10 seconds
350 m , 11-30 VDC or 18-28 VAC, A maximum
Specifications subject to change without notice.
Lancaster Road, Cressex Business Park, High Wycombe, Buckinghamshire, HP12 3QP, England
E-mail: [email protected]
E-mail: [email protected]
E-mail: [email protected]
Contact your local AIRFLOW Distributor or visit our website www.airflowinstruments.co.uk for more detailed specifications.
P/N 2980566 Rev A
Copyright © 2007 by TSI Incorporated
5.0 seconds
From 18 to 28°C (64.4 to 82.4°F), outside this range and within temperature compensation
range add 0.2% per °C (0.4% per °F).
From 20 to 26°C (68 to 78.8°F), outside this range and within temperature compensation range
add 0.5% per °C (0.9% per °F). Directed sensitivity of the Model AVT75 is a +5%/-20% of
reading +0/-0.05 m/s (+0/-10 ft/min) over 270° solid angle regardless of flow direction.
3 Standard deviation based on one minute average from 0.5 to 5.0 m/s (100 to 1000 fpm).
4 For 63% of final value, tested at 7.5 m/s (1500 fpm).
5 For 63% of final value, tested at 2.5 m/s (500 fpm).
6 Input voltage must be maintained within specifications at the transducer.
AIRFLOW Instruments, TSI Instruments Ltd.
Tel: +44 149 4 459200
Tel: +33 491 95 21 90
Tel: +49 241 523030
0.2 seconds
2
Probe length
7.5 cm, 15 cm, 22.5 cm, or 30 cm (3 in., 6 in., 9 in., 12 in.)
UK
France
Germany
AVT75
Range
1
Input Power
11-30 VDC or 18-38 VAC, 350 mA max6
3.4 cm
(1.33 in.)
7.5 cm (3 in.), 15.0 cm (6 in.)
22.5 cm (9 in.), 30.0 cm (12 in.)
AVT55/AVT65
Resolution (minimum)
0.07% of selected full scale
3.2 cm
(1.25 in.)
AVT55
6.4 mm
(.25 in.)
Temperature Range
Compensation
0 to 60°C (32 to 140°F)
Operating (electronics)
0 to 93°C (32 to 200°F)
Operating (sensor) 0 to 93°C (32 to 200°F)
Storage
0 to 93°C (32 to 200°F)
Output
Impedance
4.6 mm
(0.180 in.)