HK Instruments AVT Series Installation Instructions

INTRODUCTION
Thank you for choosing an HK Instruments AVT series air veloc-
ity transmitter. The AVT series is intended for use in commercial
environments. It is designed with a duct mount probe and adjust-
able collar suitable for round or rectangular ducts. The AVT series
provides separate readings for air velocity and temperature.
The AVT series comes with three measurement ranges in a single
device (0–400, 0–2000 and 0–4000 FPM). The AVT series is avail-
able with a relay and NIST standard calibration certificates.
APPLICATIONS
AVT series devices are commonly used in HVAC/R systems for:
• in-duct air flow and velocity monitoring
• in-duct temperature monitoring
• VAV applications
SPECIFICATIONS
Performance
Measurement ranges:
Velocity: Range 2: 0–400 fpm
Range 10: 0–2,000 fpm
Range 20: 0–4,000 fpm
Temperature: 32−122 °F (0−50 °C)
Accuracy:
Velocity: Range 2: 0–400 fpm
<20 fpm +5 % from reading
Range 10: 0–2,000 fpm
<100 fpm +5 % from reading
Range 20: 0–4,000 fpm
<200 fpm +5 % from reading
Temperature: <0.9 ºF for v > 100 fpm
Accuracy specifications include: general accuracy,
temperature drift, linearity, hysteresis, long term
stability, and repetition error.
Technical Specifications
Media compatibility:
Dry air or non-aggressive gases
Measuring units:
fpm and °F
Measuring element:
Temperature: ntc10k
Velocity: Pt1000
Environment:
Operating temperature: 32−122 °F (0−50 °C)
Storage temperature: -4−158 °F (-20−70 °C)
Humidity: 0 to 95 % rH, non condensing
Copyright HK Instruments, Inc. 2017
AIR FLOW AND VELOCITY TRANSMITTERS
AVT Series
• READ THESE INSTRUCTIONS CAREFULLY BEFORE ATTEMPTING TO
• Failure to observe safety information and comply with instructions can result in
• To avoid electrical shock or damage to equipment, disconnect power before
• To avoid potential fire and/or explosion do not use in potentially flammable or
• Retain these instructions for future reference.
• This product, when installed, will be part of an engineered system whose
• LISEZ ATTENTIVEMENT CES INSTRUCTIONS AVANT DE PROCÉDER À
• Le non-respect des informations et instructions de sécurité peut entraîner DES
• Afin d'éviter les chocs électriques et les dommages matériels, déconnectez
• Afin de prévenir les risques d'incendie et/ou d'explosion, n'utilisez pas l'appareil
• Conservez ces instructions à titre de référence.
• Une fois installé, ce produit fera partie d'un système technique dont les
Physical
Case:
Dimensions: 3.54" x 3.74" x 1.4"
(90.0 x 95.0 x 36.0 mm)
Dimensions - Probe:
OD: 0.394 in (10 mm)
Length: 8.26 in (210 mm) from bottom of the cover
Immersion length with flange: Adjustable 2"–7.08"
(50–180 mm)
Weight (Case + Probe): 7.76 oz (220 g)
Mounting: 2 screw holes, 11/64" (4.0 mm)
Materials:
Case: ABS (UL 94 V-0 Approved)
Lid: PC (UL 94 V-1 Approved)
Probe: Stainless Steel
Protection standard: IP54 / NEMA3
Display
3 1/2 digit LCD display
Size: 1.8" x 0.5" (45.7 x 12.7 mm)
Electrical connections: (2 each)
Power supply & signal out: 4-screw terminal block
)
12–24 AWG (0.2–1.5 mm 2
Relay out: 3-screw terminal block
12–24 AWG (0.2–1.5 mm )
2
Cable entry: (2 each)
Strain relief: M16
Knockout : 0.625" (16 mm)
Electrical
Input: 24 VDC / 24 VAC ± 10 %
Current consumption 35 mA (50 mA with relay) +
40 mA with mA outputs
Output signal 1: (temperature out)
0–10 V (linear to temperature)
L min 1 kΩ
4–20 mA (linear to temperature)
L max 400 Ω
www.hkinstrumentsinc.com
WARNING
INSTALL, OPERATE OR SERVICE THIS DEVICE.
PERSONAL INJURY, DEATH AND/OR PROPERTY DAMAGE.
installing or servicing and use only wiring with insulation rated for full device
operating voltage.
explosive atmospheres.
specifications and performance characteristics are not designed or controlled
by HK Instruments. Review applications and national and local codes to assure
that the installation will be functional and safe. Use only experienced and
knowledgeable technicians to install this device.
AVERTISSEMENT
L'INSTALLATION, LA MISE EN SERVICE OU L'ENTRETIEN DE CET APPAREIL.
DOMMAGES CORPORELS, LA MORT ET/OU DES DÉGÂTS MATÉRIELS.
l'alimentation électrique avant l'installation ou l'entretien, et utilisez uniquement du
câblage avec isolement assigné pour une tension d'alimentation optimale.
dans des environnements potentiellement inflammables ou explosifs.
spécifications et les caractéristiques de performance ne sont ni conçues ni
contrôlées par HK Instruments. Consultez les applications et les codes nationaux
et locaux pour garantir le fonctionnement correct et sûr de l'installation. Ne faites
appel qu'à des techniciens expérimentés et compétents pour installer cet appareil.
Output signal 2: (velocity out)
0–10 V (linear to fpm)
L min 1 kΩ
4–20 mA (linear to fpm)
L max 400 Ω
Relay Out: 3 screw terminal block
(NC, COM, NO)
12–24 AWG (0.2–1.5 mm
Potential free SPDT
250 VAC, 6 A / 30 VDC, 6 A adjustable switching point
and hysteresis
Conformance
Meets requirements for CE marking:
EMC Directive 2014/30/EU
RoHS Directive 2011/65/EU
Meets safety requirements for electrical equipment for
measurement, control, and laboratory use:
ETL marking, standard IEC61010-1.
Product is tested and meets the NRTL product approval
requirements.
4002576
INSTALLATION
INSTRUCTIONS
2 )
Conforms to ANSI/UL Std 61010
Certified to CAN/CSA Std C22.2 No 61010
COMPANY WITH
MANAGEMENT SYSTEM
CERTIFIED BY DNV GL
= ISO 9001 = ISO 14001 =
Installation version 2.0 2017
RoHS 2
2011/65/EU