AZ Instrument NICEFLOW Users Manual

Operation Manual

10cm Vane

Wireless Air Flow Meter

with Airflow cone

Model:8903/8904/8906

Model:

89161
89171
89191

Thank you for purchasing this wireless

INTRODUCTION

air flow meter. This meter is specially
designed for HVAC&R application that
combines those required measurements,
like Air Velocity, Air volume, Temp., RH,
WBT, DP, and CO2 in one handy meter.

Optional airflow cone helps in quick
volume measurement, just install the
compatible airflow cone, meter will
recognize the area for air volume
calculations automatically.
A hassle free way to take the value of
air volume .

Features :

Wireless transfer with free App

available for both iOS & Android.
Available for air velocity, air volume,
temp., RH, WBT, DP, and CO2.

Big LCD digital display
Multi-points and Timed average
Metric& Imperial units selectable
Optional Round & Square airflow cone
Fast response &
Low battery indication
Blue back light for dark places use
Handheld size, easy to carry

Function Table

Air Velocity
Air volume

Air temp.
Humidity
Dew Point
Wet Bulb
CO2

Accurate reading

89161 8919189171

1

MATERIAL SUPPLIED

This package contains:

The meter x 1
Battery x 4 (AAA size )
Operation manual x1

Hard carry case x1

Optional accessory:

Airflow cone set:
Round conex1 (dia.210mm)
Square conex1 (346x346mm)

CONTROLS AND INDICATORS

LCD DISPLAY

HOLD

inch

cm

Upper display: air velocity, RH, CO2 value.

(Depends on model) duration time in average.

Lower display: air volume, temp., WBT, DP

(Depends on model) value.

HOLD
MAXMIN:maximum & minimum reading

AVG: multi-points & timed average

: battery low voltage indicator

ppm

m/s,fpm: air velocity unit
%RH : relative humidity unit

OO

OO

: temperature unit

F

C

CMM,CFM: air volume unit
WBT, DP : wet bulb, dew point temp.

2

2

cm

inch

: area dimension unit
: air flow cone indicator
: vain icon in this meter

MIN

2

2

MAX

AVG

m/s
fpm

ppm

%RH

OO

C

CMM
CFM
WBT

DP

: freezes the current reading.

:CO2 unit

2

OO

F

KEY PAD

-Power button

-Long press to enter or exit setup
mode.

-Freeze current reading on LCD

-Long press to review MIN and MAX

-In average mode, press to record
data or start timed recording.

-In setup mode, press to enter data
settings.

-Switch for upper display.

-Long press to enter average mode.

-In average mode, press to select
option of average mode, press again
to return to normal mode.

-In setup mode, press to select
category or increase value.

-Switch for lower display.

-In average mode, press to view
recorded and average reading of
all parameters.

-In setup mode, press to select
category or decrease value.

+ -Disable auto power off.

3

MEASUREMENT

POWER ON/OFF

Press to turn on the meter. The
screen shows full display with blue
backlight on and enter normal mode.
(Model 89161/89171).
For model 89191,it proceeds 30
seconds warm up after turned on the
meter, then it enter normal mode.
Press again in any mode to turn
off the meter.

The meter is preset auto sleep in 20
minutes of inactivity. To disable this
function, hold down and for 2
seconds to turn on the meter while it is
off. It shows “n” on the LCD (see Fig.A)
and goes into normal mode(or 30 sec.
warm up for model 89191) and won’t
turn off itself until is pressed or out
of voltage.

Fig.A

SWITCH DISPLAY

When the meter is turned on, it shows
the current readings of air velocity on
the upper display and air temp. on the
lower(see Fig.B). To switch display of
other measurements, press or .

m/s

OO

C

Fig.B

4

Short press , the upper display will
cycle among air velocity, RH, and
CO2 (89191 only).
And short press , the lower display
cycles among air temp. air volume
WBT(wet bulb temp) DP(dew
point temp)(Fig.C).

%RH

CMM

Fig.C

AIR VOLUME

To measure air volume, it is necessary
to get the outlet dimensions. Go to
Setup mode and input the AREA value
first before taking measurement. (See
page 9 , P2.0)

After AREA setting is completed, press
to switch the display to air volume
and the measured air volume will be
displayed on the lower LCD.

Measure with airflow cones

Two optional airflow cones are
available for using with this
anemometer and are sold as a set.

Square
346x346mm

Round
dia. 210mm

5

To measure air volume with use of an
airflow cone. Just plug on the cone and
the meter will automatically recognize
it and shows a on the display(Fig.C).
Then the meter will calculate the air
volume by the default dimensions
despite of any AREA value is input.

Note:

Be sure the airflow cone is well mounted
and locked tight. (See pic.1)

pic.1

Lock

RH(89171/89191 only)

The capacitive humidity sensor is built
in the center of the vane to measure air
flow relative humidity and is used for
calculating dew point and wet bulb
temperatures.

Press to switch to RH display. It
shows measured RH readings on the
upper display. And it is also possible to
display with RH offset. Go to Setup
mode (see page 9, P3.0) and input
offset value, then the displayed readings
will be the measured data with offset.

6

CO2 (89191 only)

Model 89191 features additional CO2
measurement for HVAC application.
The NDIR CO2 sensor is built in the rear
side of the meter. Press to switch
to CO2 display and the current reading
will show on the upper LCD.

For places in high altitude, the pressure
compensation needs to be considered
in order to get accurate CO2 readings.
Go to Setup mode P4.0 and input the
pressure value according to your
location before taking measurements.

DATA HOLD

In normal mode, press and the
current readings are fixed on the LCD
with HOLD icon on the top and won’t
change until a second press on .

MIN/MAX

In normal mode, long press for 3
seconds and it displays the minimum
readings of all parameters since power
on with MIN icon on the top. Long press
this button again, it shows the maximum
readings with MAX on the top. (Fig.D)
Long press again and it returns to the
normal mode.

While reviewing the minimum and
maximum data, press and
and it switches to display MIN and MAX
readings of other parameters.

MAX

MAX

m/s

m/s

OO

OO

C

C

Fig.D

7

AVERAGE

This meter calculates multi-points
average and timed average of all
parameters.

Multi-points average

In normal mode, press for 2 seconds
to enter multi-point average mode.(See

Fig.E, the upper display shows the record
number and the lower is the measured reading)

- Press to record readings.

- Press to see the multi-point average
once all data is recorded. It shows the
average readings with flashing” “.

AVGAVG

- Press to view the average reading
of each parameter.

(See Fig.F, the upper display means total
20 recorded data; and the lower display is
the average reading of RH.)

- Press to return to normal mode.

m/sAVG m/sAVG m/sAVG m/sAVG

AVG

AVG

%RH

%RH

Fig.E

Fig.F

Timed average

In normal mode, press for 2 seconds
and it goes into multi-point average.
Press it again to enter timed average
mode. (See Fig.G, the upper display shows

the duration time in second, the maximum
time is 19999 seconds, and the lower is the
measured reading)

- Press to start recording, the upper
display starts the counting clock.

- Press to stop and calculate the
timed average. It shows the duration
seconds on the upper display and the
average readings at the lower display
with flashing” “. (See Fig.H)

AVG

AVG

8

AVGAVGAVGAVG

AVGAVG

ppmp pm

OOCOO

C

Fig.G

Fig.H

- Press to view average reading of
other parameters.

- Press to return to normal mode.

SETUP

The setup mode is for those related
parameters setting that can ensure
more accurate measurements.
It includes:
P1.0: Unit selection
P2.0: AREA size
P3.0: RH offset
P4.0: Pressure input (model 89191 only)

In normal mode, press for 2 seconds
to enter SETUP mode. It starts with P1.0
unit selection. Press or to select
among P1.0 to P4.0. Long press
again to return to normal mode.

P1.0: Unit selection

In P1.0 (Fig.I), press to enter units
selection (Fig.J). Then press or
to switch from Metric to Imperial unit.
The units include air velocity(m/s, fpm),
temp.(C, F), air volume(cmm,cfm), and
area size(cm ,inch ). After finishing the
setting, press to return to P1.0.

2 2

2

2

cm

cm

m/s

OO

OO

C

C

CMM

CMM

Fig.I

Fig.J

9

P2.0: AREA Size

In P2.0(Fig.K), press to enter AREA
size setting. It shows “99999” on the
lower display with the first digit flashing.
(Fig.L) The flashing digit means it is
ready to adjust. Press to change the
number and it will cycle from 0 to 9.
Press to move to next digit. After
completed, press again to return to
P2.0.

2

cm2cm

Fig.K

Fig.L

P3.0: RH offset

In P3.0(Fig.M), press to enter RH
offset setting. It shows blinking 0.0 RH
reading on the upper display(Fig.N).
Press to increase the offset value
and to decrease it. When finished
the setting, press again to return
to P3.0.

%RH%RH

Fig.M

Fig.N

P4.0:Pressure input (89191 only)

In P4.0 (Fig.O), press to enter
pressure input. It shows default 1013
hpa on the display with blinking value
at the upper (Fig.P). Press to
increase the pressure value and
to decrease it. Once finished, press
again to return to P3.0.

10

Fig.O

Fig.P

CALIBRATION

RH CALIBRATION

The humidity calibration of this meter
requires specific fixture and cannot be
done by end users. Please contact the

dealer for calibration service.

CO2 CALIBRATION(89191 only)

The meter is calibrated at standard
400ppm CO concentration in factory.
It’s suggested to do manual calibration
regularly to maintain good accuracy.

Note:

When the accuracy becomes a concern
after a long time use, return to dealers
for standard calibration.

400ppm calibration

400ppm calibration is suggested to be
done in outdoor fresh air that is well
ventilated and in sunny weather.

CAUTION:

Do not calibrate the meter in the air
with unknown CO concentration.
Otherwise, it will be calibrated as
default and leads to
inaccurate measurements.

2

2

400ppm

Place the meter in the calibration site
and follow the below procedure to
complete the 400ppm calibration.

11

1. While the meter is turned off, hold
down , and simultaneously
to enter CO2 calibration mode. It runs
30 seconds countdown with CAL at
lower display(Fig.T), and then starts
400ppm calibration.

2. During calibration, a CO2 reading in

the range of 380 to 420ppm will be
flashing on the upper display.(Fig.U)

3. Wait for 10 minutes until the reading
stops flashing, the 400ppm calibration
is completed and it returns to normal
mode automatically. .
To abort the calibration, turn off the
meter at any time.

ppm

Fig.T

Fig.U

NOTE:

Be sure the batteries are with full
voltage during the calibration to
prevent from interruption and fail
in the calibration.

LOW-BATTERY

When the battery voltage falls below the
measurement required range, shows
on the LCD. Replace with fresh batteries
to ensure accurate measurements.

12

Nice Flow App installation

Smart device system requirement
iOS version above iOS
Android version above 5.0

Please always remember to enable
the wireless function on smart device
before using this App.

App function

Main Page

Preference display

User can choose which parameters to be

displayed at the main page.
Default setting is to display all parameters,
press “ star ” button next to the parameter to
remove the one you don’t want to see at the
main page, and press again to add it back.

Main Page
Press to return to the main page and

view the current measuring values of
different meters.

(Maximum display 5 meters at one time)

Files
Press to check the history data of

Avg-Min-Max data.

About

Information of privacy and version.

Return

Return to previous page.

13

Avg-Min-Max by App

This App is able to calculates
multi-points average / timed average,
and display together with Minimum /
Maximum values of all parameters after
starts the recording process.

User can determine when to start and
when to stop the calculation, or when
to take the measurements under
Point Avg. Mode by App.

The data will be saved automatically
after stop recording, it can be output in
csv format for further analyze.

Timed average

- Select one device at one time on main
page, you will see the detail of current
measurements of the specific meter.

- Press “Time Avg.” to enter the Timed­ average mode.

- Press “Start” to start recording, the
upper right corner display the time
duration of recording.

- Press “Stop” to stop recording, the
data will be saved automatically.

-Check the recording detail at “Files”

Multi-points average

- Select one device at one time on main
page, you will see the detail of current
measurements of the specific meter.

- Press “Point Avg.” to enter the Point
Average mode.

- Press “Start” to record, the upper
right corner display the total record
point

- Press “Stop” to stop recording, the
data will be saved automatically.

-Check the recording detail at “Files”
14

Data Review & Output by App

Search Recorded Data

- Press “File” to enter the search page

- Enter serial number or file name at the
upper blank area, press “icon ” to
search.

- The search result will be listed, click
“File Name” to see the detail.

Edit File Name

- Select the file and you will see the
“Rename” option appear.

- Click “Rename”, click edit, enter file
name.

- Press Save to save the file name.

Send in CSV format

- Select the file and you will see the
“CSV” option appear

- You can select multiple files to send
them in CSV format for further analyze.

Delete File

- Select the file and you will see the
“delete” option appear.

- Click “delete” to delete the file, the
delete file will not be able to resume,
please be sure before press click.

15

Setting by App

User is able to do the setting by App.

- Select one meter on main page

- Press “ SET ” on upper left corner for

general setting list as below:

Device Name

- Press Device Name to start.

- Enter maximum 6 characters for

device name setting.

- Press ok to confirm.

Unit Selection

- Press Unit to start.

- Select Metric or Imperial.

- Press ok to confirm.

RH off set(89171/89191 only)

- Press RH off set to start.

- Enter the number between 0~12 for

RH off set setting.

- Press ok to confirm.

Pressure input (89191 only)

- Press Absolute pressure to start.

- Enter number between 700~1990 for

pressure compensation.

- Press ok to confirm.

Outlet Area input

User can also input the outlet area via
App, please follow below steps:

- Ensure airflow cone is not installed

- Press the meter you would like to input

outlet area on main page

- Press “Volume Flow” for outlet area

input, 3 options available:

*Area: Enter the calculated outlet area
*Diameter: If the outlet is in round

shape, enter the diameter
*LxW: Enter the Length and Width of
the outlet area

16

TROUBLESHOOTING

1. Power on but no display

1) Make sure the time of pressing
key is more than 200mS.

2) Check the batteries are in good
contact with correct polarity.

3) Replace new batteries and try again.

2. Display disappeared
Check whether the low battery
indicator shows before display
disappears, if yes, replace with new
batteries.

3. Error code and solution

1)Air Temp.
E02: Temp. is under low range limit.
Put the meter in room temp for
30 minutes. If E02 still shows,
send to the dealer for repair.
E03: Temp. is over high range limit.
Put the meter in room temp for
30 minutes. If E03 still shows,
send to the dealer for repair.
E31: temperature measuring AD
damaged. Send to the dealer
for repair.

2) RH

E04: temperature error caused the
RH error. Check the temp.
error solution.
E11: RH calibration error.
Try recalibration or send for
repair if it still can’t work.
E33: RH measurement circuit error.
Send to the dealer for repair.

17

3) DP and WBT

E04: Temp. or RH error.
Check temp. or RH error
solution.

4) Air velocity

E03: Velocity is over high range limit.
Try in range measurement. If
it still shows in range velocity,
recalibrate it send for repair.

5) Air volume

E03: Reading exceeds display limit.
Check if the outlet area setting
is correct.
E04: Air velocity error.
Try recalibration or send for
repair if it still can’t work.

6)CO2

E03: Temp. is over high range limit.
Put the meter in room temp.
for 10 minutes and if E03 still
shows, recalibrate it or send
for repair.

E01/E33: Voltage too low or CO2
module error.
Check if battery low icon showed
on the LCD, if yes, replace with
new batteries.
Try recalibration, or send for
repair if it still can’t work.

7) Others

E32: Memory IC error.
Turn off the meter and turn it
on again. If E32 still shows,
send to the dealer for repair.

18

TROUBLESHOOTING FOR APP

1. App no display

1) Make sure meter is power on with
display.

2) Turn off other BLE device.

3) Close the app and switch it on again.

FCC Radiation Exposure Statement

This equipment complies with FCC RF
radiation exposure limits set forth for an
uncontrolled environment. This
equipment should be installed and
operated with a minimum distance of 0.5
centimeters between the radiator and
your body.
This transmitter must not be co-located
or operating in conjunction with any
other antenna or transmitter.
The antennas used for this transmitter
must be installed to provide a separation
distance of at least 0.5 cm from all
persons and must not be co-located or
operating in conjunction with any other

antenna or transmitter.

19

SPECIFICATION

Measuring r ange

Air velocity 0.20~30.00m/s
Air volume

Temperature
Relative Humidity
DP(Dew point temp.)

WBT(Wet bulb temp.)
CO2

Resolution

Accuracy

Air velocity +/-(1.5% of reading +0.3m/s) for under 20m/s

Temperature

Relative Humidity

CO2

CO2 Warm-up time

Vane / Meter siz e (mm)

Air flow cone size(mm)
Round Dia. 210
Square 346x346

Operating condition
(avoid condensation)
Storage c ondition

Power supply

Standard package
Optional accessory Air flow cone set ( w /soft carry case ),

89161 89191

0.1m/s, 0.1(0~9999.9) or 1(10000~99999), 0.1 C/ F, 0.1%RH

Meter, manual ,AAA bat.,Hard carry case

Extension set

Certification

This device complies with Part 15 of the
FCC Rules. Operation is subject to the
following two conditions:
(1) This device may not cause harmful
interference, and
(2) This device must accept any
interference received, including
interference that may cause
undesired operation.

89171

3

0 to 99,999 m /m

o o

-20.0~60.0 C (-5~140 F)
N/A
N/A
N/A

N/A N/A

+/-(3% of reading +0.3m/s) for above 20m/s

N/A
N/A

N/A

Dia. 100, 269(L)x106(W)x51(H)

-10~ 50 C, <90%RH(avoid condensation)

0.1%~99.9%RH

o

-5.0~59.9 C

o

-20.0~59.9 C
0~9999 ppm,

(5001~9999 ppm out o f scale range)

o o

o

+0.6 C

o

+3%RH(a t 25 C, 10~90%RH) ; +5%RH( oth ers )

+30ppm+5% of rdg.(0~5000ppm)

N/A

N/A

0 to 50 °C, <80%RH

o

AAA x 4pcs

30 seconds

20

WARRANTY

The meter is warranted to be free from
defects in material and workmanship
for a period of one year from the date
of purchase. This warranty covers
normal operation and does not cover
battery, misuse, abuse, alteration,
tampering, neglect, improper maintenance
or damage resulting from leaking batteries.

Proof of purchase is required for
warranty repairs. Warranty is void if the
meter has been opened .

RETURN AUTHORIZATION

Authorization must be obtained from the
supplier before returning items for any
reason. When requiring a RA (Return
Authorization) , please include data
regarding the defective reason, the
meters are returned along with good
packing to prevent any damage in
shipment and insured against possible
damage or loss.

21

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2018.09 v.01