Kanomax KM6841, KM6843, KM6842, KM6840 User manual

Model AT400

Page 1 of 16

User Manual

AT400 User Manual
Rev 2.0
Jan. 05-2017

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Page 3 of 16

IMPORTANT SAFETY INFORMATION

Classifications

Danger: To Prevent Serious Injury or Death

Warnings in this classification indicate danger that may result in serious injury or death if
not observed.

Caution: To Prevent Dama ge to the Pro duct

Warnings in this classification indicate risks of damage to the product that may void the
product warranty and/or calibration.

Description of Symbols

ESD Caution: To Prevent D amage to the Product

Warnings in this classification indicate risks of damage to the product that may void the
product warranty and/or calibration. Internal components are static sensitive and are not
user serviceable. Openi ng the cases by a non-authorized service cent er and/or in a non­ESD safe environment may cause damage not covered by the manufa cturer’s warranty.

Important: Mandatory Action Required

The specific action is gi ven near this symbol.

FCC Compliance Statement
This equip ment ha s been te sted a nd found t o comp ly wit h the limi ts for a Class
B digital device, pursuant to part 15 of the FCC rules. T hese limits are designed
to provide reasonable protection against harmful interference. This equipment
generates, uses and can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harmful interference to
radio communications. However, there is no guarantee that interference will not
occur in a particular situation.

AT400 User Manual
Rev 2.0
Jan. 05-2017

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Page 4 of 16

IMPORTANT SAFETY INFORMATION (continued)

EU – Declaration of Conformity
Kanomax-USA declares that the product for this manual complies with the
essential requirements and other relevant provisions of Directive 1999/5/
EC. A copy of the Declaration of conformity is available on request.

RoHS Statement
Concerning EU-Directive 2011/65/EU (RoHS 2), to the best of our
knowledge, based on supplier provided information, all Kanomax-USA
Instrument brand products, are not intentionally manufactured or
formulated with the following substances: Lead, mercury, cadmium, hexavalent
chromium, polybrominated biphenyls (PBB), polybrominated diphenyl
ethers (PBDE). Minimal levels established in the 2005 RoHS Directive still
apply under Article 4(2), Annex II: 0.1% by weight in homogenous
materials for lead, mercury, hexavalent chromium, polybrominated
biphenyls and polybrominated diphenyl ethers; 0.01% by weight in
homogenous materials for cadmium. Please be advised that we do not
analyze for these substances.

WEEE – Waste Electrical and Electronic Equipment - 2002/96/EC
Kanomax-USA asks that all our products to be recycled at the end of their
current use, to comply with local waste requirements. Kanomax-USA supports
local Waste Electrical and Electronic Equipment (WEEE) directives where
they are in operation. That means that WEEE may not be disposed as
unsorted municipal waste but is to be collected separately. Kanomax-USA
consumer products are therefore labeled with a crossed-out “wheelie-bin”
symbol which you can see above. Further, all our products bear any other
appropriate symbols for their respective region. WEEE may contain
hazardous substances which may negatively affect the environment and
human health when disposed of through normal channels. Kanomax-USA is
committed to reduce the negative environmental and human health effects of
WEEE.

AT400 User Manual
Rev 2.0
Jan. 05-2017

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Page 5 of 16

DANGER

Never touch the vane assembly blades and/or thermal sensors.
The vane assembly blades may contain sharp edges which may cause minor
cuts. The assembly contains precision bearings which are sensitive and the
blades are finely adjusted to specific pitches. Touching this assembly or its parts
may cause damage which can affect its operation and the calibration.
NOTE: If the vane assembly head or probe head requires cleaning we
recommend a fine mist of isopropyl alcohol and a fine long-haired b rus h o r se nd
the unit in or servicing.

Do not touch the circ ui t board when 120/220VAC is o r has been

applied. Only connect 120/220VAC wires to the unit with power
disconnected. Double-check to make sure the wires are in the correct
terminals before applying power.

Power may still be prese nt after voltage has been removed via storage in the
capacitors. Only authorized repairs can be accomplished after proper
discharging of the circuits.

CAUTION

When measuring, ensure that t he direction arrow is facing the

direction of air flow.

The arrow indicates the direction of airflow for the data provided on the calibration
certificate. It is meant to allow for uniform and consistent readings as per the provided
data. The probe will operate in the opposite direction but the data may be different.

The transmitter case is designed to protect against dust an d p owerful

water jet penetratio n (IP 66), when properly clos ed.

Do not over-tighten the cover screws, only secure snugly. Over-tightening may cause
cover warping and damage. Only insert round, appropriate sized cables into the Liquid
Tight Cord Grips. Use of non-round, double cables/wires, or too small cabling may
reduce the IP rating and cause damage.

AT400 User Manual
Rev 2.0
Jan. 05-2017

2

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Page 6 of 16

CAUTION (continued)

Do not use or leave the instrument in a high temperature, high humidity,
high speed airflows or dusty environments for prolonged p eriods.

The instrument may not function properly out of the specified operating conditions and/or
have a greatly reduced op erating life span.

Do not subject the instrument or the probe to strong impacts.
Dropping the instrument or the probe may cause damage or malfunction to the instrument
and may change the calibration data. We recommend sendin g i t in immediately to be
checked.

Never disassemble, modify or repair the product.
Failure to observe the above may cause damage to the instrument or the probe. It may
also void the manufacturer’s warranty and calibration certificate.

Do not pick up or carry the instrument by the cable.
It may cause a malfunctio n or damage to the wiring of the cable.

Do not wipe the instrument with a volatile solvent.
Use neutral solvent s and simple cleaners to clean the instrument with a soft cloth.

Regularly check the head of the probe for contamination.
Impurities (such as dust) on the blades and/or thermal sensor may affect the
accuracy of the instrument.

NOTE: If the vane assembly head or probe head requires cleaning we
recommend a fine mist of isopropyl alcohol and a fine long-haired b rus h o r se nd
the unit in or servicing.

AT400 User Manual
Rev 2.0
Jan. 05-2017

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Page 7 of 16

INTRODUCTION

The AT400 and TAT420 air velocity transmitters supply
accurate air velocity and (TAT420) temperature data from a
building or process airflow on a continuous basis to a computer,
chart recorder, printer, and meter or control circuit.

Every instrument has terminals for both DC and AC power, and
0-1V, 0-5V and 4-20mA outputs. The outputs are concurrent and
can accept multiple wires (depending on the gauge used).

The heavy, all metal (except for the electronics pod) air probes
can be used for airstreams that have a wide range of humidity,
temperature and contaminants without compromising accuracy.

AT400 User Manual
Rev 2.0
Jan. 05-2017

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Page 8 of 16

SPECIFICATIONS

Sensors:

Air Velocity sensor: Metal rotating vane 1” or 2 ¾”
Temperature (TAT420): PT100 RTD

Range:
Air Velocity: 1” Probe: 300-6890 FPM (1.5-35 MPS)

2 ¾” Probe: 50-7800 FPM (0.2-40 MPS)

Temperature (TAT420): -4˚ to 176˚F (-20˚ to 80˚C)

Accuracy:
Air Velocity Probes:

2 ¾” Probe: ±1%+1 digit

1” Probe: ±0.5% full scale +0.75% reading + 1 digit
Temperature Probe: ±1.0˚C (TAT420)
Transmitter Air Velocity: ± 0.02 mA
Transmitter Temperature: ± 0.10 mA (TAT420)
Response Time:
Air Velocity: 2 second average and update
Temperature (TAT420): Approximately 60 seconds

Analog Outputs (separate and concurrent):
Air Velocity:

0-1V, 0-5V and 4-20mA represent 0-6800FPM (0-35MPS) for

the 1” probe and 0-7800FPM (0-40MPS) for the 2 ¾”

probe
Temperature (TAT420):

0-1V, 0-5V and 4-20mA represent -4 to 176˚F (-20˚ to 80˚C)

Operating Range: -4˚ to 176˚F (transmitter)

-22˚ to 212˚F (probe heads)

Power Supplies: 120 or 220VAC, 50-60Hz, also

10-30VDC

AT400 User Manual
Rev 2.0
Jan. 05-2017

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Page 9 of 16

Input Current (with all options):

10-30VDC: AT400: 22mA, TAT420: 43mA

110VAC: AT400: 19mA, TAT420: 21mA
220VAC: AT400: 10mA, TAT420: 11mA

Output Impedance (0-1V and 0-5V outputs):

1KΩ

Enclosure:

ABS plastic, NEMA Class 4

Dimensions:

Housing: 4.8” x 4.8” x 2.2”
Probe: 1” or 2 ¾” diameters

Weight: 18 ounces

Options:

Custom cable lengths: For probe cables1

Included:

• (1) AT400 Instrument

• (1) Vane-type probe head, choice of AP100 or AP275

• (1) Probe connection cable, 5 ft. for AP275

NOTE: If a longer cable is ordered, the 5ft. is not included.

• (1) AT400 operation manual

• Certificate of Calibration with Data

AT400 User Manual
Rev 2.0
Jan. 05-2017

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Page 10 of 16

INSTALLATION AND SETUP FOR AT400, TAT420

MOUNTING THE TRANSMITTER

Mount transmitter on a secure surface. The recommended

screw size is a #8 x ¾” (or longer) tapping screw.

Note: Make all connections with Power Off. Remove cover to

attach Transmitter to mounting area and to attach

power and signal cables. Attach in location free of

physical dangers such as excessive heat or continuous

condensing moisture.2

Note: On the AT400, terminals 1-3 are not be installed.
Note: Terminals 13-15 are not installed on any transmitter.

TERMINAL CONNECTIONS

1. 4-20 mA temp 9. 220 VAC

2. 0-1 Volt temp TAT420 10. 110 VAC

3. 0-5 Volt temp 11. 220/110 VAC

4. 4-20 mA air velocity 12. No Connection

5. 0-5 Volt air velocity 13. Not Installed

6. 0-1 Volt air velocity 14. Not Installed

7. Ground 15. Not Installed

8. V+ (10-30 VDC)

AT400 User Manual
Rev 2.0
Jan. 05-2017

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Page 11 of 16

POWER HOOKUP*

WARNING: Use extreme caution when handling power wires.

Make sure the wires are disconnected from the source.

1a) 110VAC power: hook white (neutral) wire into slot 10.

Then hook black (hot) wire into slot 11.
1b) 220VAC power: hook either hot wire into slot 11. Then

hook the other hot wire into slot 9.
1c) 10-30VDC: first hook ground wire into slot 7. Then hook

V+ wire into slot 8.

AIR VELOCITY OUTPUT*

2a) 0-1V F/S output: hook output ground reference to slot 7.

Then hook the air velocity output wire to slot 6.
2b) 0-5V F/S output: hook output ground reference to slot 7.

Then hook the air velocity output wire to slot 5.
2c) 4-20mA F/S output: hook output ground reference to slot 7.

Then hook the air velocity wire to slot 4.

TEMPERATURE OUTPUT (TAT420)*

3a) 0-1V F/S output: hook output ground reference to slot 7.

Then hook temperature output wire to slot 3.
3b) 0-5V F/S output: hook output ground reference to slot 7.

Then hook temperature output wire to slot 2.
3c) 4-20mA F/S output: hook output ground reference to slot 7.

Then hook temperature output wire to slot 1.

MOUNTING THE PROBE

Mount the probe in the air stream to be measured. A common
3/8” by 16-tpi threaded rod or bolt can be used to mount the
probe to a fixture. Connect the air probe to the unit via the
connector on the top of the case.

AT400 User Manual
Rev 2.0
Jan. 05-2017

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METRIC OR ENGLISH UNITS

Shown on the diagram but no longer available

REPLACING COVER

Use care not to damage the seal.

DISPLAY SWITCH

Shown on the diagram but no longer available

Page 12 of 16

AT400 User Manual
Rev 2.0
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*NOTE: Be sure to tighten screws above slots when finished.

Diagram 1: Location and Polarity of Connectors and

Air velocity

Display
1

2

3

5

4.330”

3.515”

8.93 cm

Calibration
6

4

Temperature

Switches.

Page 13 of 16

Connector

AT400 User Manual
Rev 2.0
Jan. 05-2017

Jumper J1

11 cm

Connections:
TAT-420 only

Connector

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Page 14 of 16

APPENDIX A – No Longer Available

APPENDIX B – No Longer Available

_____________________________

1

In order to insure the proper calibration, all custom-length cables
for air probes with temperature sensors must be ordered at the time
the transmitter is purchased; or the unit must be returned for
calibration.

2

Cable grips will seal on round cables from 2.5 to 6.5mm diameter.
For wire bundles, if you wish to insure water tightness, use RTV
silicon or other sealant safe for electronics at end of cable grip.

Notes:

AT400 User Manual
Rev 2.0
Jan. 05-2017

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