Dwyer Instruments SAH0616 Users Manual

Series SAH SMART Air Hood™

Bulletin TE-SAH

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.

SPECIFICATIONS

VOLUME FLOW
Service: Air.
Units: CFM, l/s, m
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.

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

3

/h.

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.

SETTING UP
Powering the Unit

The SMART Air Hood™ is ready to use directly out of the box. No assembly
process is required. The unit can be powered on by pushing the power button.

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.

Once the SMART Air Hood™ is on, blue and red lights blink intermittently.
This blinking pattern means that the SAH is not connected to is corresponding
handheld device.

Power on the handheld device by pushing the power button like any other
smartphone.

Connecting 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.

In the following screen, several options are available to the SMART Air
Hood™. To continue with the connection, tap on the CONNECT TO SMART
AIR HOOD button.

To connect to the SMART Air Hood™, tap the SEARCH button to locate it,
and tap on the empty square of the found SMART Air Hood™ device.