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INCLUDED WITH THE SAH SMART AIR HOOD™

1.

Base unit with 2' x 2' (600 mm x 600 mm) opening

2.

UHH2 handheld

3.

Storage/carrying case

4.

12' (3.66 m) extension pole

5.

3' (0.91 m) extension pole

6.

UHH2 pole attachment

7.

Pole pins (Pack of 3)

8.

Charging cable and block for SMART Air Hood™

9.

Charging cable and block for UHH2

10.

1' x 4' hood with assembly pack

The Series SAH SMART Air Hood™

is designed to measure air flow from 

HVAC air ducts and diffusers for balancing. The SAH is lightweight, rugged, 
and ergonomically designed for easy use and maneuverability. The interface is 
Wi-Fi direct to the UHH2 handheld and can transmit up to 200 yards (183 m). 
The unit includes an on/off switch and LEDs to alert when the unit is connected, 
transmitting, and when the battery is running low in order to avoid recording 
inaccurate measurements. The SAH SMART Air Hood™ is durable and easily 
stores in the included travel case.

INTRODUCTION

Do not use the UHH2/hood unit for liquid or gas 
mixtures other than air. No responsibility will be taken 
by Dwyer Instruments, Inc. for any resulting damage to 

the unit or to the operators if it is used with corrosive or dangerous or explosive 
gas mixtures. When using the UHH2/hood to check air flow at ceiling diffusers, 
make certain that you can raise and hold the unit safely during use. This 
instrument is not classified as flameproof or intrinsically safe; therefore, it must 
not be used where an explosion hazard may exist. The unit is not authorized for 
use on life support applications.

Note: 

Observe standard safety procedures when working on ladders and 

scaffolding. Also, ensure the unit does not become caught in moving machinery 
or on sharp objects.

If stored under conditions outside normal operating 
range, allow the unit to stabilize at room conditions 
before use.

Owing to its size and shape, take care when carrying the assembled unit 
from place to place.

Avoid people and nearby equipment.

Avoid objects that may damage the capture hood.

Turn the instrument off before storage or transportation and remove the 
batteries if storing for long periods of time.

Avoid subjecting the capture hood sensing grid to excessive loading during 
use or assembly. Any air flow other than through the calibrated sensing 
holes, such as any hair-line cracks, will seriously affect the sensitivity.

A damaged sensing grid must be replaced. It cannot be repaired.

Take care when fitting different sized canvas hoods of the protruding pins 
at the capture hood.

Do not disassemble the sensing grid from the capture hood. The retaining 
structure is specifically designed to accommodate loading due to normal 
operation.

Under low humidity conditions, static electric charges may be encountered. 
These can be avoided by applying a suitable anti-static solution.

Bulletin TE-SAH

Series SAH SMART Air Hood™

SPECIFICATIONS

VOLUME FLOW
Service: 

Air.

Units:

CFM, l/s, m

3

/h.

Range:

30 to 2000 CFM.

Accuracy for Any Diffuser > 50 CFM: 

±3% of reading  ±10 CFM.

Resolution:

1 CFM

TEMPERATURE
Units: 

°F, °C, K.

Range:

40 to 140°F (4.4 to 60°C).

Accuracy:

±1.8°F (±1°C).

Resolution:

0.01°C

RELATIVE HUMIDITY
Range:

5 to 95%, non-condensing.

Accuracy: 

±5% of reading (no 

calibration required)

Resolution: 

0.04% RH.

ABSOLUTE PRESSURE
Units:

mbar, Pa.

Range: 

10 to 2000 mbar.

Accuracy @ 25°C:

±2% of reading 

(between 300 and 1100 mbar).

Resolution:

0.016 mbar

Power Requirements:

3.7 V MH12210 

lithium ion battery, included, user 
replaceable or (4) 1.5 V AA alkaline 
batteries, not included, user 
replaceable.

Dimensions: 

15" x 24" x 24" (381 mm 

x 610 mm x 610 mm).

Weight:

5.5 lb (2.5 kg)

Agency Approvals:

CE, FCC.

Summary of Contents for SAH SMART Air Hood Series

Page 1: ...p objects If stored under conditions outside normal operating range allow the unit to stabilize at room conditions before use Owing to its size and shape take care when carrying the assembled unit from place to place Avoid people and nearby equipment Avoid objects that may damage the capture hood Turn the instrument off before storage or transportation and remove the batteries if storing for long ...

Page 2: ...ing to the SMART Air Hood Once the handheld device is on access the Mobile Meter app by tapping on the screen where the icon is located The following screen appears offering multiple options The Mobile Meter app is a tool designed to read from several Dwyer devices To use the SMART Air Hood tap on the AIR BALANCING button to access the Branch Menu In the following screen several options are availa...

Page 3: ... are required to reach and place the SMART Air Hood on a diffuser The pole comes with an adapter that assemble to the SMART Air Hood using a pin Position the pole in order to be concentric to the hole in the mounting fixture of the SMART Air Hood Place the pin through the holes in order to lock the pole to the SMART Air Hood Attach the QUAD LOCK device on the handheld and the pole Once the handhel...

Page 4: ...To determine the diffuser style look through the translucent body of the SMART Air Hood or remove the SMART Air Hood from the diffuser In the below example airflow is being measured from a Plaque Register diffuser style In order to change from Step Down Three Cone Register diffuser style simply tap on the diffuser icon The following screen will appear showing the entire library of diffuser styles ...

Page 5: ...nstrument in water DO NOT use abrasive cleaning products on the hood The instrument can be wiped clean with a damp cloth DO NOT use abrasive cleaning products on the Pitot tube grid which may block or damage the grid The grid may be CAREFULLY wiped clean with a cloth Ensure Pitot tube holes are not contaminated with moisture DO NOT use abrasive cleaning products that may damage the grid or may lea...

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