Sper Scientific 850026 User Manual

Mini Environmental

Quality Meter

850026

7720 E. Redeld Rd. Suite #7,

Scottsdale, AZ 85260

Tel: [phone] | Fax: [phone]

Web: www.sperscientic.com

Mini Environmental
Quality Meter 850026

Copyright ©2012 by
Sper Scientic
ALL RIGHTS RESERVED
Printed in the USA

The contents of this manual may
not be reproduced or transmitted
in any form or by any means
electronic, mechanical, or other
means that do not yet exist or
may be developed, including
photocopying, recording, or any
information storage and retrieval
system without the express
permission from Sper Scientic.

Sper Scientic
7720 E. Redeld Rd. Suite #7,
Scottsdale, AZ 85260
Tel: [phone]
Fax: [phone]
Web: www.sperscientic.com

2 3

TABLE OF CONTENTS

1. INTRODUCTION . . . . . 4

2. MATERIALS SUPPLIED. . 4

3. FEATURES . . . . . . . . 5

4. FRONT PANEL

DESCRIPTION . . . . . . 6

5. OPERATING

INSTRUCTIONS. . . . . . 7

Power on/off . . . . . . . .7

LCD backlight on/off . . . . 7

Mode selection . . . . . . 7

Unit selection . . . . . . . 9

Special attention for the
Humidity measurement . 10
Air ow measurement . . 11

Hold Function . . . . . . 12

REC (Record) function . 12
Auto power off disable . . 13

6. BATTERY

REPLACEMENT. . . . . 14

7. SPECIFICATIONS. . . . 15

8. WARRANTY. . . . . . . 20

3

INTRODUCTION

For environmental testing
anywhere. Model 850026
combines 7 environmental test
functions into a single compact
unit. Features include touch­tone buttons, min/max and hold
functions. Comes ready to use
with wrist strap, instructions,
battery and soft carrying case.

MATERIALS SUPPLIED

Meter
Wristlet
CR 2032 DC 3V Battery
Soft Carrying Case

4 5

FEATURES

• 7 professional environmental

instruments in 1

• Lightweight, ergonomic design

• Wristlet design provides extra

protection to the instrument

• Low-friction ball bearing

mounted impeller design
provides high accuracy at
high and low air velocity

• High precision humidity sensor

with fast response time

• Built-in microprocessor circuit

assures excellent performance
and accuracy

• Concise and compact buttons

arrangement for easy operation.

• Maximum and minimum

memory with recall

• Hold function

• °C/°F selection

FRONT PANEL DESCRIPTION

3. FRONT PANEL DESCRIPTION

6

4

1

7

2

3

5

9

8

1 Hold button
2 Button (Power button)
3 REC button
4 LCD display
5 Wristlet
6 Anemometer vane
7 Humidity/Temperature sensor
8 Battery compartment cover
9 Buttons operation label

6 7

OPERATING INSTRUCTIONS

Power on/off

Button = Power Button

1. Power on: Press once to
turn meter on.

2. Power off: Press for > 3
seconds to turn meter off.

LCD backlight on/off

With the meter on, press
once. The LCD backlight will
light for 5 seconds, then shut
off automatically.

Mode selection

This meter offers 7
selectable modes:

a. Anemometer (Air velocity) /

Temp

b. Air ow (CMM, CFM)
c. Wind Chill
d. Humidity/Temp
e. Dew point Temp
f. Wet bulb Temp
g. Heat index

7

With the meter on, press HOLD
continuously and the Display
will show the following texts
in sequence:

Display Mode text

An = Anemometer (Air velocity)

/Temp

AirFL = Air ow (CMM, CFM)
CHiLL = Wind chill
rH = Humidity/Temp
dP = Dew point Temp
_Et = Wet bulb Temp
HEAt = Heat index

When the display shows the
desired mode, release HOLD
and the meter will set this mode
as the default.

8 9

Anemometer (Air Velocity)/
Temp Measurement

Unit Selection
REC button = Enter button

1. With the power on, press
REC for >3 seconds, the
display will show Unit.
Release REC, then press
to scroll through the available
scales. After the desired scale
is selected, press REC to
save as the default.

2. The next screen displays
“dCdF” with the current
temperature scale selection
(°C or °F) below. Press to
select the desired scale. Press

REC to save as the default.

Note…

When CHiLL, rH, dP, _Et and
HEAt are the selected mode,
you may only change the
temperature scale setting.
(°C or °F)

9

The selection scales
for all modes are:

Measurement Scales

m/s, Km/h,

Air Velocity

Temp. (Air velocity) °C/°F

Air ow CMM, CFM

Wind chill °C/°F

Temp. (Humidity) °C/°F

Dew point °C/°F

Wet bulb Temp. °C/°F

Heat index °C/°F

mph, knot,
FPM

Note…
For the most accurate
reading for the humidity/
Temp., Dew point Temp.,
Wet bulb Temp., Heat index
measurement, do not touch
or block the humidity sensor
at any time with your hand.

10 11

Air ow measurement

1. With the Power on, select Air
ow mode (refer to page 7)

2. Set the measurement area
dimension: Press Hold once,
the display will show HOLD
then press REC continuously
until the lower left of the
Display shows m-2 or F-2

m-2 = meter square
F-2 = ft square

The unit of measure is
determined by the selected
scale CMM or CFM

3. Use Hold and to adjust
the air ow dimension value.
When the desired dimension
value is set, press REC to
save as the default.

button = ▲button

Hold button = ▼ button
REC button = Enter button

Hold Function

Pressing Hold will freeze the
current reading on the display.
The HOLD symbol will be
displayed at the top of the
display window.

To release the Hold function,
press Hold again, the HOLD
indicator will disappear and
the current reading will be
displayed.

REC (Record) function

The REC (Record) function
will record and display the
maximum and minimum
readings.

1. Start the Record function
by pressing REC once.
The REC symbol will appear
on the display.

2. With the REC symbol on
the display:

12 13

a. Press REC once and the

Max symbol will appear on
the display along with the
current maximum value.

b. Press REC again, the MIN

symbol will appear on
the display along with the
current minimum value.

c. Clear the recorded MAX or

MIN value from the display
by pressing Hold once.
The MAX/MIN symbols
and their readings, will
disappear from the display.
The meter will return to the
REC function and continue
recording.

d. To exit REC function press

REC button for >2 seconds.

Auto power off disable

In order to prolong the battery
life, this instrument has an Auto
Power Off function: the meter
will turn off if no buttons are

13

pressed for approximately
10 minutes.

To disable the Auto Power Off
function, press REC and enter the
record function (page 12). The Auto
power off function will be disabled
until the record function is exited.

REPLACE BATTERY

1. When the LCD display
shows symbol, it is
time to replace the battery.
(Measurements may still
be made for several hours
after the low battery indicator
appears.)

2. Open the Battery Compartment
and remove the battery.

3. Install the battery (CR2032)
and replace the cover.

14 15

GENERAL SPECIFICATIONS

Display 8 mm LCD display

Measurement 1. Anemometer

(Air velocity)/Temp

2. Humidity/Temp

3. CMM, CFM

4. Dew point

5. Wet bulb

6. Wind chill

7. Heat index

Operating
Humidity

Operating
Temperature

Over Input
Display

Power Supply CR 2032 DC

Power
Consumption

Weight 160g (battery

Dim (HWD) 4.7" x 1.8" x 1.2"

Standard
Accessories

Max. 80% RH

0 ~ 50°C
(32 ~ 122°F)

“- - - -”

3V battery

Approx. DC 5 mA

included)

(120 x 45 x 20 mm)

Instruction Manual,
battery, soft case

15

ELECTRICAL SPECIFICATIONS

(±23 ±5°C)

Air Velocity

Unit Range Res. Acc.

ft/min 80 ~ 3927 1

m/s 0.4 ~ 20.0 0.1

km/h 1.4 ~ 72.0 0.1

mph 0.9 ~ 44.7 0.1

knots 0.8 ~ 38.8 0.1

Temp.
°C/°F

ft/min: feet per minute
m/s: meters per second
km/h: kilometers per hour
mph: miles per hour
knots: nautical miles per hour

0 ~ 50°C 0.1°C ± 1.2°C

32 ~ 122°F 0.1°F ± 2.5°F

≤20 m/s:
±3% F.S.

>20 m/s:
±4% F.S.

16 17

ELECTRICAL SPECIFICATIONS

Humidity/Temperature

Unit Range Res. Acc.

< 70 %RH:
±4 %RH

%RH

Temp.

Air Flow

Unit Range Res.

CMM 0.024~36000

CFM 0.847~1271300

10 to 95
%RH

0~50°C 0.1°C ± 1.2°C

32~122°F 0.1°F ± 2.5°F

0.1 %
RH

0.001/0.01/

0.1/1

0.001/0.01/

0.1/1/10 (x10)/
100 (x100)

≥70 %RH:
± (4% rdg
+1.2 %RH)

17

ELECTRICAL SPECIFICATIONS

Dew point Temp.

Unit Range Res. Remark

°C -25.3~49.0° 0.1°

°F -13.5~120.0° 0.1°

Wet bulb Temp.

Unit Range Res. Remark

°C -5.4~49.0° 0.1°

°F 22.2~120° 0.1°

Wind chill

Unit Range Res. Accuracy

°C -0.4~44.2° 0.1° ± 2.0°C

°F 15.0~112.0° 0.1° ± 3.6°F

* Wind chill value is in effect only when

the Temp. value <15°C and Air velocity
value >1.4 m/s.

* Calculate

from the
humidity/
Temp.
value

* Calculate

from the
humidity/
Temp. value

18 19

ELECTRICAL SPECIFICATIONS

Heat index

Unit Range Res. Accuracy

°C 0~100° 0.1° ± 2.0°C

°F 32~212° 0.1° ± 3.6°F

Effects of the heat index
(shade values)

°C °F Notes

Caution: Fatigue is

27~

80~

32°

90°

32~

90~

41°

105°

41~

105~

54°

130°

54°+ 130°+

* Exposure to full sunshine can increase

heat index values by up to 8°C (14°F)

possible with prolonged
exposure and activity.
Continuing activity could
result in heat cramps

Extreme caution:
Heat cramps, and heat
exhaustion are possible.
Continuing activity could
result in heat stroke

Danger:
Heat cramps, and heat
exhaustion are likely; heat
stroke is probable with
continued activity

Extreme danger:
Heat stroke is imminent

19

WARRANTY

Sper Scientic warrants this product
against defects in materials and
workmanship for a period of ve (5)
years from the date of purchase,
and agrees to repair or replace any
defective unit without charge. If your
model has since been discontinued, an
equivalent Sper Scientic product will
be substituted if available. This warranty
does not cover probes, batteries, battery
leakage, or damage resulting from
accident, tampering, misuse, or abuse
of the product.

To obtain warranty service, ship
the unit postage prepaid to:

SPER SCIENTIFIC LTD.
7720 E Redeld Rd, Suite 7
Scottsdale, AZ 85260

The defective unit must be accompanied
by a description of the problem and your
return address. Register your product
online at www.sperscientic.com, or
return your warranty card within 10
days of purchase.

Revised 09/05/12

20