Eproteca 850027 User manual

Mini Environmental
Quality Meter
850027
Instruction Manual

2
Mini Environmental Quality Meter 850027
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.
INTRODUCTION
For environmental testing anywhere. Model 850027
combines 11 environmental test functions into a single
compact unit. Features include touch-tone 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
Optional Accessory:
850027P - Pt 1000
Temp. Probe

3
TABLE OF CONTENTS
1. INTRODUCTION . . . . . . . . . . . . . . . . . . 2
2. MATERIALS SUPPLIED . . . . . . . . . . . . . . 2
3. FEATURES . . . . . . . . . . . . . . . . . . . . . 4
4. FRONT PANEL DESCRIPTION . . . . . . . . . . . 5
5. OPERATING INSTRUCTIONS . . . . . . . . . . . 6
Power on/o󰀨 . . . . . . . . . . . . . . . . . . . . . 6
LCD backlight on/o󰀨. . . . . . . . . . . . . . . . . 6
Mode selection . . . . . . . . . . . . . . . . . . . 6
Unit selection . . . . . . . . . . . . . . . . . . . . 6
Special attention for the
Humidity measurement . . . . . . . . . . . . . . . 8
Air ow measurement . . . . . . . . . . . . . . . . 9
Barometric measurement . . . . . . . . . . . . . 10
Altitude measurement . . . . . . . . . . . . . . . 11
Optional Pt 1000 probe . . . . . . . . . . . . . . 13
Hold Function . . . . . . . . . . . . . . . . . . . 13
REC (Record) function . . . . . . . . . . . . . . 13
Auto power o󰀨 disable. . . . . . . . . . . . . . . 14
6. BATTERY REPLACEMENT . . . . . . . . . . . . 14
7. SPECIFICATIONS. . . . . . . . . . . . . . . . . 15
8. WARRANTY . . . . . . . . . . . . . . . . . . . . 20

4
FEATURES
• 11 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
• Barometric sensor for precise atmosphere and
altitude measurement
• Built-in microprocessor circuit assures excellent
performance and accuracy
• Optional Pt 1000 Temp. probe
• Concise and compact buttons arrangement for
easy operation.
• Maximum and minimum memory with recall
• Hold function
• °F/°C selection

5
FRONT PANEL DESCRIPTION
3. FRONT PANEL DESCRIPTION
Fig. 1
3-1 Hold button
3-2 Button ( Power button )
3-3 REC nutton
3-4 LCD display
3-5 Wristlet
3-6 Anemometer Vane
3-7 Humdity/Temp. sensor
3-8 Battery Compartment / Cover
3-9 Buttons operation label
3-10 Anemometer Temp. sensor
3
7
4
1
8
2
3
11
10
5
1 HOLD button
2 Button (Power button)
3 REC button
4 LCD display
5 Wristlet
6 Light sensor
7 Anemometer vane
8 Humidity/Temperature sensor
8 Barometer sensor
10 Battery compartment cover
11 Buttons operation label
12 Pt 1000 ohm probe socket
6
12
9

6
OPERATING INSTRUCTIONS
Power on/o󰀨
Button = Power Button
1. Power on: Press once to turn meter on.
2. Power o󰀨: Press for > 3 seconds to turn meter o󰀨.
LCD backlight on/o󰀨
With the meter on, press once. The LCD backlight will
light for 5 seconds, then shut o󰀨 automatically.
Mode selection
This meter o󰀨ers 11 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
h. Light
i. Barometric pressure
j. Altitude
k. Pt 1000 Temp. (optional)

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
LIgHt = Light
bAr = Barometric pressure
HigH = Altitude
Pt = Pt 1000 Temp. (optional)
When the display shows the desired mode, release
HOLD and the meter will set this mode as the default.
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.

8
2. The next screen displays “dCdF” with the current
temperature scale selection (°F or °C). 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. (°F or °C)
The selection scales for all modes are:
Measurement Scales
Air Velocity m/s, Km/h, mph, knot, FPM
Temp. (Air velocity) °F/°C
Air ow CMM, CFM
Wind chill °F/°C
Temp. (Humidity) °F/°C
Dew point °F/°C
Wet bulb Temp. °F/°C
Heat index °F/°C
Light Lux, FC
Barometric Pressure hPa, mmHG, inHG
Altitude m, ft
Pt 1000 Temp. °F/°C

9
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
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.
Light measurement
For light measurement, hold the meter with the light sensor
on top, so it is not blocked by your hand. The display will
automatically reverse direction to be easily read.

10
Barometric pressure measurement
1. Actual location air pressure (absolute air pressure
value) measurement: with Power on, select “Barometric
pressure measurement” (refer to page 7, display will
show bAr text), now the meter is ready for actual air
pressure measurement (absolute air pressure value).
Note...
Actual air pressure in the measurement location changes
in response to two things: changes in altitude and
changes in atmosphere.
2. Sea level barometric pressure value measurement.
Press HOLD once, the Display will show the Hold
indicator then press REC continuously until the bottom
left of the display shows “m” or “ft”.
m = meter ft = feet
Use HOLD and to adjust the location altitude value.
When the location altitude value is set, pressing REC will
show the sea level barometric pressure value.
button = ▲button
HOLD button = ▼ button
REC button = Enter button

11
Note...
The sea level barometric pressure value can not be
saved as a default when the meter is powered o󰀨.
When the meter is powered on again and bAr is
selected the meter will show the actual air pressure in
the measurement location (absolute air pressure value).
Altitude measurement
Note...
The higher the location altitude, in comparison to sea
level, the lower the barometric pressure.
To measure your altitude value precisely:
a. Method 1: Set the altitude value if your start
location is known.
b. Method 2: Reset the sea level barometric
pressure value rst.
Method 1:
Power on the meter and under the altitude function, press
HOLD once, the display will show the Hold indicator. Press
REC once, the bottom of the display will show the m (or Ft)
indicator ashing.

12
Using HOLD and adjust the altitude value. When the
desired start location altitude value is set, press REC to
save the setting value as the default.
button = ▲button
HOLD button = ▼ button
REC button = Enter button
Note....
You can obtain your altitude value from a topographical
map or local landmark. Google Earth is an excellent
free program that provides the exact altitude for a given
address: www.earth.google.com. You can also get the
reference altitude value from the reading of a GPS system.
Method 2:
Power on the meter and under the altitude function, press
HOLD once, the display will show the Hold indicator.
Press REC continuously until the bottom left of display
shows “HPA” indicator ashing. Release REC.
Use HOLD and the to adjust the current sea level
barometric pressure value. When the desired value is set,
press REC to save as the default.
button = ▲button
HOLD button = ▼ button
REC button = Enter button

13
Note...
You can obtain your current sea level barometric pressure
value by checking an internet weather site for a nearby
location or contacting a local airport.
Optional Pt 1000 Temp. measurement
1. Insert the plug of the optional Pt 1000 Temp. probe
850027P into the Pt 1000 probe socket (see page 5)
2. Power on the meter, select the function to “Pt 1000
Temp.” (refer to page 6), now the meter is ready for
Pt 1000 Temp. measurement.
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.

14
2. With the REC symbol on the display:
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 o󰀨 disable
In order to prolong the battery life, this instrument has
an Auto Power O󰀨 function: the meter will turn o󰀨 if no
buttons are pressed for approximately 10 minutes.
To disable the Auto Power O󰀨 function, press REC and
enter the record function (page 13). The Auto power o󰀨
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.

15
GENERAL SPECIFICATIONS
Display 8 mm LCD display
Measurement 1. Anemometer (Air velocity)/Temp
2. Humidity/Temp
3. Light
4. Barometer
5. CFM, CMM
6. Dew point
7. Wet bulb
8. Wind chill
9. Heat index
10. Altitude
11. Pt 1000 Temp. (opt.)
Operating Humidity Max. 80%RH
Operating Temp. 32 to 122°F (0 to 50°C)
Over Input Display “- - - -”
Power Supply CR 2032 DC 3V battery
Power Consumption Approx. DC 5 mA
Weight 2.3 oz (68g) (battery included)
Dim (HWD) 4¾" x 1¾" x 1" (120 x 44 x 23 mm)
Standard Accessories Instruction Manual, battery, soft case
Optional Accessories 850027P Pt 1000Temp. probe

16
ELECTRICAL SPECIFICATIONS
@ 74 ±9°F (23 ±5°C)
Air Velocity
Range Resolution Accuracy
ft/min 80 to 3927 ft/min 1 ft/min
≤20 m/s:±3% FS
>20 m/s:±4% FS
m/s 0.4 to 20.0 m/s 0.1 m/s
km/h 1.4 to 72.0 km/h 0.1 km/h
mph 0.9 to 44.7 mph 0.1 mph
knots 0.8 to 38.8 knots 0.1 knots
°F 32 to 122°F 0.1°F ±2.5°F
°C 0 to 50°C 0.1°C ±1.2°C
VELOCITY DEFINITIONS
ft/min: feet per minute
m/s: meters per second
km/h: kilometers per hour
mph: miles per hour
knots: nautical miles per hour
Air Flow
Range Resolution
CMM 0.024 to 36000 CMM 0.001/0.01/0.1/1 CMM
CFM 0.847 to 1271300 CFM 0.001/0.01/0.1/1/10 (x10)/100 (x100) CFM

17
Dew point Temperature
Range Resolution Remark
°F -13 to 120°F 0.1°F *Calculated from the
humidity / Temp. value
°C -25 to 49°C 0.1°C
ELECTRICAL SPECIFICATIONS
@ 74 ±9°F (23 ±5°C)
Humidity/Temperature
Range Resolution Accuracy
RH 10 to 95%RH 0.1%RH <70%RH:±4%RH
≥70%RH:±(4%RDG +1.2%RH)
°F 32 to 122°F 0.1°F ±2.5°F
°C 0 to 50°C 0.1°C ±1.2°C
Wind chill*
Range Resolution Accuracy
°F 15 to 112°F 0.1°F ±3.6°F
°C -9 to 44°C 0.1°C ±2.0°C
Wet bulb Temperature
Range Resolution Remark
°F 22 to 120°F 0.1°F *Calculated from the
humidity / Temp. value
°C -5 to 49.0°C 0.1°C
*Wind chill value
is in e󰀨ect only when
the Temp. value
<15°C and Air velocity
value >1.4 m/s.

18
Light *auto range
Range Resolution Accuracy
Lux 0 to 2,200 Lux 1 Lux
±5%RDG
±8%RDG
1,800 to 20,000 Lux 10 Lux
Foot-candle 0 to 204.0 FC 0.1 FC
170 to 1,860 FC 1 FC
ELECTRICAL SPECIFICATIONS
@ 74 ±9°F (23 ±5°C)
Barometric Pressure (Barometer)
Range Resolution Accuracy
hPa 10.0 to 999.9 hPa 0.1 hpa ±1.5 hPa
1000 to 1100 hPa 1 hpa ±2 hPa
mmHg 7.5 to 825.0 mmHg 0.1 mmHg ±1.2 mmHg
inHg 0.29 to 32.48 inHg 0.01 inHg ±0.05 inHg
Alititude
Range Resolution Accuracy
m-2000 to 9000 m 1 m ±15 m
ft -6000 to 30000 ft 1 ft ±50 ft

19
Pt 1000 Thermometer (opt. probe)
Range Resolution Accuracy
°F 14 to 212°F 0.1°F ±2.5°F
°C -10 to 100°C 0.1°C ±1.2°C
Heat index
Range Resolution Accuracy
°F 32 to 212°F 0.1°F ±3.6°F
°C 0 to 100°C 0.1°C ±2.0°C
E󰀨ects of the heat index (shade values)
°F °C Notes
80 to 90°F 27 to 32°C
Caution: Fatigue is possible with prolonged
exposure and activity. Continuing activity
could result in heat cramps
90 to 105°F 32 to 41°C
Extreme caution: Heat cramps, and heat
exhaustion are possible. Continuing
activity could result in heat stroke
105 to 130°F 41 to 54°C
Danger: Heat cramps, and heat
exhaustion are likely; heat stroke is
probable with continued activity
130°F+ 54°C+ Extreme danger: Heat stroke is imminent
*Exposure to full sunshine can increase heat index values by up
to 14°F (8°C)
ELECTRICAL SPECIFICATIONS
@ 74 ±9°F (23 ±5°C)

20
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. Opening the meter
to expose its electronics will void the warranty.
To obtain warranty service, shipthe unit postage prepaid to:
SPER SCIENTIFIC LTD.
8281 E. Evans Rd., Suite #103
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.sperwarranty.com within 10 days of purchase.
Revised 6/13/2019
Tel.: [phone] • Fax: [phone]
[email protected] • www.eproteca.com