Sper Scientific 850021 User Manual

RH Anemometer Pen

850021

Instruction Manual

SPER

SPER

SPERSPER
SCIENTIFIC

SCIENTIFIC

SCIENTIFICSCIENTIFIC

TABLE OF CONTENTS

Features …………………………………………... 3

Front Panel Description ………………………….. 4

Measurement Procedures ….……………………. 5-9

Specifications ………………………………..……. 10-12

Battery Replacement …………………………..… 13

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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, or damage resulting

from accident, misuse, or abuse of the product. In

order to obtain warranty service, simply ship the

unit postage prepaid to:

SPER SCIENTIFIC LTD.

7720 East Redfield, Suite 7

Scottsdale, AZ 85260

Email: [e-mail],

Phone: [phone]

Be sure to include your name, address, phone

number, and a detailed explanation of why you are

returning the item. Mail your warranty card within

10 days or register on line at:

www.sperscientific.com.

FEATURES

• Anemometer units of measure: m/S, Km/h, FPM, mph,

Knots.

• Humidity with Dew point measurement.

• Temperature measurements in ºC and ºF.

• Vane anemometer (built-in) for highly reliable wind

speed measurements.

• Low-friction ball vane is accurate for both high and low

velocities.

• Fast response time for all measurements.

• One of the three modes can be displayed at one time:

Humidity/Temp., Humidity/Dew point and Anemometer/

Temp.

• Bright LCD display.

• Microprocessor circuit ensures high accuracy with spe-

cial functions and features.

Revised: 10/31/2007

• Records Maximum and Minimum readings.

• Durable compact ABS-plastic housing.

• Auto power-off saves battery life.

• Operates on 4 standard AAA alkaline batteries.

3

FRONT PANEL DESCRIPTION

BATTERY REPLACEMENT

Figure 1

1 Vane

2 Humidity/Temp Sensor

3 Power (▲) button

4 Hold ( ) & Unit button
5 REC () & Mode button

1. Replace the batteries when the low battery icon
is displayed in the upper left corner of the LCD.
Use 4 new AAA alkaline batteries.

2. To replace the batteries, open the Battery Cover by turn­ing counter-clockwise.

3. Ensure the Battery Cover is secured after replacing the
batteries.

X

6 LCD Display

7 Battery Compartment

4

13

SPECIFICATIONS

MEASURING PROCEDURE

Humidity & Dew Point

Humidity

Range 10% to 95% R.H,

Resolution 0.1 % R.H.

Accuracy ≥ 70% RH

± (3% reading + 1% RH)
< 70% RH - 3% RH
± 3% RH

Dew point *

ºC Range -25.3 ºC to 48.9 ºC

Resolution 0.01 ºC

ºF Range -13.5 ºF to 120.1 ºF

Resolution 0.01 ºF

*

The Dew point display value is automatically calculated
from the Humidity and Temperature measurements. Dew
point accuracy is directly dependent upon the accuracy of
the Humidity and Temperature measurements.

Mode Selection

1. Turn on the meter by pressing the Power button To
turn the meter off, press the Power button again.

2. The meter has three modes that can be selected:

a. Humidity / Temperature
b. Humidity / Dew Point
c. Anemometer / Temperature

3. Press the Mode button for at least 2 seconds and both
the upper and lower values will start to flash (see dia­gram below). Use the ▲ button to switch the upper dis­play unit, and use the  button to switch the lower dis­play unit. Then press the  button to accept the se-

lected units.*

%RH

Value Flashing

60.9

12

Value Flashing

*

The most recent settings are stored when the power is
turned off, and displayed again when power is turned back
on.

25.9 ºC

5

MEASURING PROCEDURE

SPECIFICATIONS

Unit Selection

1. Turn on the meter by pressing the Power button.

2. Press the Unit button for at least 2 seconds and both the
upper and lower values will start to flash (see below).
Use the ▲ button to switch the upper display unit, and
use the  button to switch the lower display unit. Then

press the 

Value Flashing

 button to accept the selected units.*

 

%RH

25.9 ºC

60.9

Value Flashing

Electrical Specifications

Anemometer (Air velocity)

Measure­ment

m/S 0.4 to 30.0 m/s 0.1 m/S

Km/h 1.4 to 108.0

FPM 80 to 5910 ft/

mph 0.9 to 67.0

Knots 0.8 to 58.3

Temperature

Range Resolution Accuracy

0.1 Km/h

km/h

1 Ft/min

min

0.1 mph

mph

0.1 knots

knots

≤ 20m/S :
± 3% F.S.

> 20 m/S :
± 4% F.S

(all measurements)

Measurement units:

Anemometer m/S, Km/h, FPM, mph, Knot

Temperature

Humidity %RH

Dew Point

*

The most recent settings are stored when the power is
turned off, and displayed again when power is turned back

on.

ºC, ºF

ºC, ºF

6

Measuring Range 0 ºC to 50 ºC / 32 ºF to 122 ºF

Resolution 0.1 ºC / 0.1 ºF

Accuracy ±0.8 ºC / 1.5 ºF

11

SPECIFICATIONS

MEASURING PROCEDURE

General Specifications

Display LCD size: 28mm x 19mm

Sensor Structure Anemometer—Vane probe with low

friction ball bearing design
Humidity—Capacitance humidity sen­sor, semiconductor
Temperature—Semiconductor

Sampling Time Approx. 1 second

Power off Auto or manual off

Operating
Temperature

Operating
Humidity

Power Supply 4 AAA alkaline batteries

Weight 182g / .4LB with battery incl.

Dimension 205 x 48 x 40mm

Accessories In­cluded

0 to 50º C

Less than 80% RH

8.1” x 1.9” x 1.6”

Instruction manual, soft carrying case
and batteries

Anemometer Measurement

1. Turn on the meter by pressing the Power button.

2. Set the mode to display: Anemometer / Temperature:
Upper display shows air velocity value and the lower
display shows temperature.

Humidity Measurement

1. Turn on the meter by pressing the Power button.

2. Set the mode to display: Humidity / Temperature: Up­per display shows humidity value and the lower display
shows temperature.

Dew point measurement

1. Turn on the meter by pressing the Power button.

2. Set the mode to display: Humidity / Dew point: Upper
display shows humidity value and the lower display
shows dew point.

10

7

MEASURING PROCEDURE

MEASURING PROCEDURE

Data Hold

1. To hold the current reading on the LCD, press the Hold
button. The LCD will show the HOLD symbol.

2. Press the Hold button again to resume active measure­ment.

Data Record (Maximum & Minimum Reading)

1. The data record function records the maximum and
minimum readings. Press the REC button to start the
Data Record function - REC shows on the display.

2. Press the REC button and the REC MAX symbol, along
with the maximum value will appear on the LCD display.

3. Press the REC button again and the REC MIN symbol,
along with the minimum value will appear on the LCD
display.

4. To exit the memory record function, press the REC
button for a minimum of 2 seconds. The display will
revert back to the current reading, not showing REC.

When the LCD display shows REC MAX (or REC MIN),
press the Hold button to delete the stored max (or min)
value.

Auto Power Off Management

1. The meter has a built-in Auto Power Shut-off function in
order to prolong battery life. The meter will switch off
automatically if no buttons are pressed within 10 min­utes.

2. To disable this feature, select the memory record func­tion during measurement, by pressing the REC button.

8

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