Mini Environmental Quality Meter 850027 7720 E. Redfield Rd. Suite #7, Scottsdale, AZ 85260 Tel: (480) 948-4448 | Fax: (480) 967-8736 Web: www.sperscientific.
Mini Environmental Quality Meter 850027 Copyright ©2012 by Sper Scientific 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 Scientific. Sper Scientific 7720 E. Redfield Rd.
TABLE OF CONTENTS 1. INTRODUCTION . . . . . 4 2. M ATERIALS 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 . . 11 Air flow measurement . . . 11 Barometric measurement . 12 Altitude measurement . . .
INTRODUCTION For environmental testing anywhere. Model 850027 combines 11 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 Optional Accessory: 850027P - Pt 1000 Temp.
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.
FRONT PANEL DESCRIPTION 3. FRONT PANEL DESCRIPTION 7 4 1 12 11 2 3 9 10 6 8 5 Fig. 1 1 HOLD button 2 3-1 Button Hold button(Power button) 3 REC button 3-2 Button ( Power button ) 3-3 REC nutton 4 LCD 3-4 LCD display display 3-5 Wristlet 5 Wristlet 3-6 Anemometer Vane 6 Light sensorsensor 3-7 Humdity/Temp. 3-8 Battery Compartment / Cover 7 Anemometer vane 3-9 Buttons operation label 8 Humidity/Temperature sensor 3-10 Anemometer Temp.
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 11 selectable modes: a. Anemometer (Air velocity) / Temp b. Air flow (CMM, CFM) c. Wind Chill d. Humidity/Temp e. Dew point Temp f. Wet bulb Temp g.
h. Light i. Barometric pressure j. Altitude k. Pt 1000 Temp. (optional) 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 flow (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.
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. 2. The next screen displays “dCdF” with the current temperature scale selection (°C or °F). Press to select the desired scale. Press REC to save as the default.
you may only change the temperature scale setting. (°C or °F) The selection scales for all modes are: Measurement Scales Air Velocity m/s, Km/h, mph, knot, FPM Temp. (Air velocity) °C/°F Air flow CMM, CFM Wind chill °C/°F Temp. (Humidity) °C/°F Dew point °C/°F Wet bulb Temp. °C/°F Heat index °C/°F Light Lux, FC Barometric Pressure hPa, mmHG, inHG Altitude m, ft Pt 1000 Temp.
Air flow measurement 1. With the Power on, select Air flow mode (refer to page 8) 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 flow dimension value. When the desired dimension value is set, press REC to save as the default.
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. Barometric pressure measurement 1.
page 8, 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”.
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 Note... The sea level barometric pressure value can not be saved as a default when the meter is powered off. 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 first. Method 1: ower on the meter and under P the altitude function, press HOLD once, the display will show the Hold indicator.
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 flashing. 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 Note...
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 6) 2. Power on the meter, select the function to “Pt 1000 Temp.” (refer to page 7), 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.
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: 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 pressed for approximately 10 minutes.
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.
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. 0 ~ 50°C (32 ~ 122°F) Over Input Display “- - - -” Power Supply CR 2032 DC 3V battery Power Consumption Approx. DC 5 mA Weight 160g (battery included) Dim (HWD) 4.7" x 1.8" x 1.
ELECTRICAL SPECIFICATIONS (±23 ±5°C) Air Velocity Unit Range Res. 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. 0 ~ 50°C °C/°F 32 ~ 122°F Acc. ≤20 m/s: ±3% F.S. >20 m/s: ±4% F.S. 0.1°C ± 1.2°C 0.1°F ± 2.5°F ft/min: feet per minute mph: miles per hour m/s: meters per second knots: n autical miles km/h: kilometers per hour per hour Air Flow Unit Range Res. CMM 0.024 ~ 36000 CFM 0.001/0.01/ 0.1/1 0.001/0.01/ 0.
ELECTRICAL SPECIFICATIONS (±23 ±5°C) Wind chill Unit Range Res. Acc. °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. Humidity/Temperature Unit %RH Temp. Range Res. Acc. < 70 %RH: ±4 %RH 10 to 95 %RH 0.1 % RH ≥70 %RH: ± (4% rdg +1.2 %RH) 0 ~ 50°C 0.1°C ± 1.2°C 32 ~ 122°F 0.1°F 24 ± 2.
ELECTRICAL SPECIFICATIONS (±23 ±5°C) Dew point Temp. Unit Range °C °F Res. Remark -25.3 ~ 49.0° 0.1° * Calculate from the humidity/ -13.5 ~ 120.0° 0.1° Temp. value Wet bulb Temp. Unit Range °C °F Res. Remark -5.4 ~ 49.0° 0.1° * Calculate from the humidity 22.2 ~ 120° 0.1° / Temp. value Light *auto range Unit Lux Footcandle Range Res. 0 ~ 2,200 Lux 1 Lux 1,800 ~ 20,000 Lux 10 Lux ±5% rdg 0 ~ 204.0 FC 0.1 FC ±8% rdg 170 ~ 1,860 FC 1 FC 25 Acc.
ELECTRICAL SPECIFICATIONS (±23 ±5°C) Barometric Pressure (Barometer) Unit hPa Range Res. Acc. 10.0 ~ 999.9 0.1 hpa ±1.5 hPa 1000 ~ 1100 1 hpa ±2 hPa mmHg 7.5 ~ 825.0 0.1 ±1.2 mmHg mmHg inHg 0.01 inHg 0.29 ~ 32.48 ±0.05 inHg Alititude Unit Range Res. Acc. m -2000 ~ 9000m 1m ± 15 m ft -6000 ~ 30000 ft 1 ft ± 50 ft Pt 1000 Thermometer (opt. probe) Unit Range Res. °C -10.0 ~ 100.0 0.1°C ± 1.2°C °F 14.0 ~ 212.0 0.1°F 26 Acc. ± 2.
ELECTRICAL SPECIFICATIONS (±23 ±5°C) 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 27~ 32° 80~ 90° Caution: Fatigue is possible with prolonged exposure and activity. Continuing activity could result in heat cramps 32~ 41° 90~ 105° Extreme caution: Heat cramps, and heat exhaustion are possible.
WARRANTY Sper Scientific warrants this product against defects in materials and workmanship for a period of five (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 Scientific 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.
