Sper Scientific 800002 User Manual

SPECIFICATIONS

Accuracy 10°C to 150°C-2% of

reading or 2°C, whichever
is greater*

Resolution 1°C 10 to 150°C

1°F 50 to 302°F

0.1°C 10.0 to 110.0°C

0.1°F 50.0 to 230.0°F

Emissivity Setting 0.10 to 0.95 with a factory

preset of 0.95
Temperature
Sensor
Measurement
Wavelength
Region
Distance Factor D/S: Approx. 10:1

Sampling Time Approx. 1 second

Data Output RS232 PC Serial Interface

Operating
Temperature
Operating
Humidity

Power Supply 9v Battery (included)

Power Current Approx. DC 4.8 mA

Dimension of
Meter

Dimension of
Probe

Weight 385g/13.5 oz.

Display 13 mm (0.5 inch) digit LCD

Accessories Instruction Manual,

Thermocouple pie

6 to 12 micrometers

D=Distance, S=Size of

spot

0 to 50°C (32 to 122°F)

Less than 80% RH

180 x 72 x 32 mm (7.1 x

2.8 x 1.3 inch)

31.5 mm diameter cylinder

x 170 mm

(1.25” dia. X 6.75”)

Battery, Carrying Case

NARROW SPOT

IR THERMOMETER

800002

INSTRUCTION MANUAL

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TABLE OF CONTENTS

Features 3

Front Panel Description 4

Measurement Procedure 5

How to Hold the Probe when
Measuring

Emissivity 7

Calculating & Adjusting Emissivity 7

Factors Affecting Measurement 8

RS232 Serial Interface 10

Battery Replacement 11

Specifications 12

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

7720 E. Redfield, Suite 7, Scottsdale, Arizona 85260

Please Note: The defective unit must be accompanied
by a description of the problem and your return
address.

Please be sure to return your warranty registration
card within ten (10) days of purchase.

WARRANTY

LTD

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BATTERY REPLACEMENT

“LBT” will appear in the upper left of the
display when the battery outputs less than

6.5 to 7.5 v. You should replace the battery
as soon as possible. However,
measurements made for several hours will
still be within specs after the low battery
indicator appears. As the battery depletes,
the readings will become inaccurate.

1. To replace the battery, remove the
“Battery Cover” (Fig.1-8) on the rear of
the instrument by careful prying with a
flat head screw driver.

2. Remove the battery and replace it with a
new 9v battery.

3. Replace the cover.

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RS232 SERIAL INTERFACE

This instrument works with the Sper
Scientific Intelligent Software and the RS232
serial connection to output data directly to
your computer. You can also use it with
other software using the RS232 output via

3.5 mm terminal (Fig1-14). The connector
output is a 16 digit data stream which can be
utilized by the user’s specific needs.

A RS232 cable (Sper Scientific 840055) or
equivalent is required to link the meter to the
PC serial port. The cable must have a 3.5
mm jack plug and a 9 pin connector where
the center pin equals Pin 2 and the Ground/
Shield equals Pin 5. The 16 digit data
stream is displayed in the format:
Each digit indicates the following status:

D15D14D13D12D11D10D9D8D7D6D5D4D2D1D0

D0 End Word

D1 to D4 Upper Display Reading, D1=LSD, D4=MSD

D5 to D8 D5=? D6=? D7=? D8=?

D9 Decimal Point (DP) for display

D10 D10=0

D11&D12

D13 D13=0

D14 Reading Polarity for the Display

D15 Start Word

0=No DP, 1=1DP, 2=2DP, 3=3DP

Enunciator for Upper Display

01=°C, 02=°F

0=Display value is “+”
1=Display value is “-”

FEATURES

• Very useful for measuring the surface
temperature of small and narrow spot
targets, such as IC, transistors, coils,
and transformers

• Wide range measurement from –10°C to
300°C (14°F to 572°F)

• 0.1°C and F minimum resolution

• Emissivity adjustment from 0.10 to 0.95

• Removable probe, easy operation, and

remote measurement

• Large LCD display

• Minimum and maximum recordings with

recall

• Data hold function

• RS232 serial interface for use with your

computer and software such as
Sper Scientific Intelligent Software

850050.

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3

FRONT PANEL DESCRIPTION

1. Display

2. Data HOLD Button

3. °C/°F Scale Selection Button

4. Memory RECORD Button

5. Memory RECALL Button

6. POWER Switch

7. 1° / 0.1° Resolution Selection Switch

8. Battery Compartment Cover

9. IR Probe Socket

10. Emissivity Adjustment VR

11. IR Probe Main Body

12. IR Probe Sensing Head

13. Meter Input Plug

14. RS-232 Output Socket

Fig. 1

This is especially important when the
difference between the ambient
temperature and the object temperature
are significantly different.

3. Disturbance: Objects having low
emissivity or objects having a low
temperature yet high emissivity emit little
infrared energy. Measurement of these
objects is adversely effected by powerful
infrared energy radiated from nearby
objects having high emissivity or high
temperature. For example, when
measuring objects in sunlight, erratic
measurements are caused as strong
radiated energy from the sun is reflected
on the surface of the object which enters
the sensor.

4. Incorrect Emissivity: This can cause
incorrect readings. If you believe that
this is happening, adjust the emissivity
(refer to page 7).

5. Coating: If the object surface is covered
with frost, ice, or other material, clean it
to expose the true surface.

6. Reflectance: If the surface is highly
reflective, apply masking tape or apply
flat black paint, or another means to
flatten reflectivity.

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the object with the IR probe, adjust the
“Emissivity Adjust VR” (Fig.1-10) with a small
flat head screwdriver until the readings
match.

• Turning the VR to the left (counter­clockwise) will adjust the emissivity to

0.10 to 0.94.

• Turn the VR all the way to the right to
reset the probe to 0.95.

FACTORS AFFECTING

MEASUREMENT

1. Measurement Field/Distance:

• The ideal distance between the probe
and the surface being measured is
10 mm (3/8 inch)

• The size of the object should be at
least 2.5 mm (3/32 inch)

2. Positioning: For the most accurate
reading, the probe should be held as
perpendicular to the object as possible.

MEASUREMENT PROCEDURE

1. Plug the IR probe plug (Fig.1-9) into the
meter input socket (Fig.1-13).

2. Turn meter on using the POWER switch
(Fig.1-6).

3. Choose scale using the °C/°F button
(Fig.1-3). The chosen scale will appear
in the lower right of the display.

4. Select the resolution by moving the
1°/0.1° switch (Fig.1-7). Use “1°” for

general use.

5. While holding the IR probe main body
(Fig.1-11), point the tip of the probe
(Fig.1-12) at the object being measured.
The meter will display the surface
temperature.

• The ideal distance between the probe
and the surface being measured is
10 mm (3/8 inch)

• The size of the object should be at
least 2.5 mm (3/32 inch)

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6. Data Hold: During measurement, the
“HOLD” button (Fig.1-2) will hold the
measure value and the LCD will show
“D.H.” in the upper left of display.
Pressing the “HOLD” a second time will
release the data hold function.

7. Data Record: The recording function
displays the minimum and maximum
readings. To start, press the “RECORD”
button (Fig.1-4). “REC” will show in the
lower left of the display. With “REC” on:

• Press “RECALL”. “MAX” will show in
the display with the maximum
temperature value.

• Press “RECALL” again to change
display to show the minimum value.
“MIN” will show in the display.

• To exit record mode, press
“RECORD”. Display will revert to
current reading.

HOW THE PROBE SHOULD BE HELD

DURING MEASUREMENT

Correct Incorrect

EMISSIVITY

All objects emit invisible energy. The
amount of energy is proportional to the
object’s temperature and its ability to emit
energy. This ability to emit energy is called
emissivity and based upon the composition
of the object and the qualities of the surface.
Emissivity values range from 0.10 for a very
reflective object to 1.00 for a flat black
surface.

The probe of the IR Thermometer senses
energy and calculates the temperature
based on the amount of IR energy it
receives and a factory set emissivity value of

0.95, which will cover 90% of the typical
applications. However, if the emissivity
value of the measured material is not 0.95,
the emissivity value should be adjusted.

CALCULATING AND ADJUSTING

EMISSIVITY

To match the correct emissivity with the
specific value of the object is important in
order to obtain exact temperature. When the
emissivity of the object is unknown,
calculating the exact value can be difficult
and require the use of other devices.
However, there are several easy ways of
calculating the emissivity value. For
example:

Use a digital thermometer and a surface
probe to measure the object’s temperature
as close as possible. Then, while measuring

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