Mini Environmental Quality Meter 850026 7720 E. Redfield Rd. Suite #7, Scottsdale, AZ 85260 Tel: (480) 948-4448 | Fax: (480) 967-8736 Web: www.sperscientific.
Mini Environmental Quality Meter 850026 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 . . 10 Air flow measurement . . . 11 Hold Function . . . . . . . 12 REC (Record) function . .
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.
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.
FRONT PANEL DESCRIPTION 3. FRONT PANEL DESCRIPTION 6 4 1 9 2 3 8 7 5 Fig. 1 1 Hold button 3-1 Hold button 2 3-2Button (Power button) Button ( Power button ) 3-3 REC nutton 3 REC button 3-4 LCD display 4 LCD display 3-5 Wristlet 3-6 Anemometer Vane 5 Wristlet 3-7 Humdity/Temp. sensor 3-8 Battery Compartment / Cover 6 Anemometer vane 3-9 Buttons operation label 7 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 7 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.
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 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. 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.
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 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.
Air flow measurement 1. With the Power on, select Air flow 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 flow dimension value. When the desired dimension value is set, press REC to save as the default.
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.
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.
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.
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 Max. 80% RH Operating Temperature 0 ~ 50°C (32 ~ 122°F) Over Input Display “- - - -” Power Supply Power Consumption CR 2032 DC 3V battery 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. °C/°F 0 ~ 50°C 0.1°C ± 1.2°C 32 ~ 122°F 0.1°F ± 2.5°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 16 Acc. ≤20 m/s: ±3% F.S. >20 m/s: ±4% F.S.
ELECTRICAL SPECIFICATIONS Humidity/Temperature Unit %RH Temp. Range Res. Acc. < 70 %RH: ±4 %RH 10 to 95 %RH 0.1 % RH 0~50°C 0.1°C ± 1.2°C 32~122°F 0.1°F ± 2.5°F ≥70 %RH: ± (4% rdg +1.2 %RH) Air Flow Unit Range Res. CMM 0.024~36000 CFM 0.001/0.01/ 0.1/1 0.001/0.01/ 0.847~1271300 0.
ELECTRICAL SPECIFICATIONS Dew point Temp. Unit Range Res. Remark °C -25.3~49.0° 0.1° °F -13.5~120.0° 0.1° * Calculate from the humidity/ Temp. value Wet bulb Temp. Unit Range Res. Remark °C -5.4~49.0° 0.1° °F 22.2~120° 0.1° * Calculate from the humidity/ Temp. value 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.
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 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.
