Anaheim Scientific M140 User manual

Model M140
Mini Solar Power Meter

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Table of Contents
1INTRODUCTION............................................................................... 3
1.1 The M140 Features:................................................................... 3
1.2 The M140 Applications:.............................................................. 3
2SAFETY SUMMARY......................................................................... 4
3COMPLIANCE STATEMENTS......................................................... 5
4PRODUCT CONTENTS AND INSPECTION .................................... 5
5DEVICE DESCRIPTION ................................................................... 6
5.1 LCD Display: .............................................................................. 6
5.2 Control Buttons: ......................................................................... 7
6DEVICE OPERATION....................................................................... 7
6.1 “Power”Button: ......................................................................... 7
6.2 "ZERO”Button: .......................................................................... 7
6.3 “UNIT”Button: ........................................................................... 8
6.4 Data “HOLD”Button: ................................................................. 8
6.5 Auto “Range”Button:................................................................. 8
6.6 Battery Replacement:................................................................. 9
7TESTING EXAMPLES .................................................................... 10
8TECHNICAL SPECIFICATIONS .................................................... 12
9SERVICE, REPAIRS, CALIBRATION............................................ 13
10 LIMITED TWO-YEAR WARRANTY ................................................ 15

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1 Introduction
Thank you for purchasing a M140 Solar Power Meter
from Anaheim Scientific. The M140 measures solar
irradiance in units of W/m2or [BTU/(ft2*h)]. Durable
and reliable the M140 is easy to use.
1.1 The M140 Features:
•Super low price, high precision
•Measurable light sources include all visible light
•Overload display OL
•Select either W/m2or [BTU/(ft2*h)] units
•Power off: Manual on/off by push button, or auto
shut-off after 15 minutes
1.2 The M140 Applications:
•Solar power evaluations
•Finding the optimal incident angle for solar panels
•Measurement of the sun’s transmission through
transparent and opaque materials

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2 Safety Summary
CAUTION
Adhere to the following conditions for safe
and effective usage of this meter
•Do not operate the meter in an environment filled
with combustible gas, liquids, dust or fibers
•In order to avoid reading incorrect data, please
replace the battery immediately when the symbol
“" appears on the LCD
•For long storage, remove the battery to prevent the
battery from leaking causing damage
•Operating Environment: This meter is designed for
use with in Pollution Degree 2
•Operating Environment: 5°C ~ 40°C, <80% RH,
≤2km altitude
•Storage Environment: -10 to 60°C, <70% RH
•Clean the device with a dry soft cloth. Wet cloths,
liquid and water are prohibited.

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3 Compliance Statements
Caution: This symbol indicates that the
equipment and its accessories are
subject to special collection and
disposal procedures
This meter is EMC compliant and has undergone tests
according to EN61326 (1997) + A1 (1998) + A2 (2001)
4 Product Contents and Inspection
This unit is tested prior to shipment. It is therefore
ready for immediate use upon receipt. An initial
physical inspection should be made to ensure that no
damage has been sustained during shipment.
Inspect the packing box on receipt for any external
damage. If any external damage is evident, remove
the instrument and visually inspect its case and parts
for any damage. If damage to the instrument is
evident, a description of the damage should be noted
on the carrier’s receipt and signed by the driver or
carrier agent. Save all shipping packaging for
inspection. Forward a report of any damage to the
agent through which the unit is procured.

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Retain the original packing in case subsequent
repackaging for return is required. Use of the original
packing is essential.
After the mechanical inspection, verify the contents of
the shipment. The items included in this package are:
•M140 Meter
•User Manual
•Carrying Case
•2 x AAABatteries
5 Device Description
5.1 LCD Display:
1. Main display
2. Data hold
3. ZERO display
4. Low battery
5. BTU (ft2*h).
6.W/m2display
7.Indicator Decimal point

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5.2 Control Buttons:
1. Power button
2. ZERO button
3. UNIT button
4. Data Hold
button
5. Auto Range
6 Device Operation
6.1 “Power” Button:
Press the “ ” button to turn ON the power. The display
comes alive.
Press the “ ” button once again to turn OFF the power
and put the device into sleep mode. The display changes
from light to dark.
6.2 "ZERO” Button:
You should always make sure the meter is “zeroed
out.” This means that when in complete darkness the

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meter reads “0.00”. With the solar sensor covered,
press the “ ”button for the zero adjustment.When
the light sensor cover is not attached properly, “CAP”
is indicated.
6.3 “UNIT” Button:
Press the “ ” button to turn ON the power and put the
device to operating mode. The screen displays BTU/
(ft2*h). Press the “ ” button to switch from BTU/(ft2*h)
to W/m2. To select a different unit, just press this
button once again.
6.4 Data “HOLD” Button:
Press the “ ” button to go into hold mode, and
“HOLD” appears on the screen to allow you to read
the data. Press this button once again to deactivate it.
6.5 Auto “Range” Button:
Press the “ ” power button to turn ON the power and
put the device to operating mode. If “199.9” comes up
on the screen, it suggests

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the device will become overloaded or has become
overloaded “OL”. In this case, press the “ ” button,
and “1999” or your acquired value then comes up.
6.6 Battery Replacement:
WARNING
If the symbol ” ” appears on the LCD,
please replace the battery immediately
•Remove the battery cover
•Noting the polarity, replace the battery.
•Install the battery cover.

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7 Testing Examples
•Measure your car’s headlights.
Turn ON your car’s headlights. Then turn ON the solar
meter and “000.0” appears on the screen. Put the
device down close to the headlights. Switch between
high beam and low beam, and light intensity values
appear on the screen. Both the right and left
headlights must be tested. Note the values and put
them in your car for reference.
•Measure the effect of the solar insulation of your
car’s windows:

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Aim the device at the sun and close to a window, and
the intensity appears on the screen. Open the window
and aim the device at the sun. Compare the value
against that acquired
when the window is
closed to understand
the efficiency of the
window’s solar film.
Test y o u r ne w ca r a n d
preserve the
measurements in it.
After that, test it at
least once every year.
•Meausre the effect
of the solar
insulation of your
house’s windows:
Close the window. Press the “ ” button on your TM-
750 solar meter, and “000.0” comes up on the screen.
Put the device close to the window and aim it at the
sun. Compare the value against that acquired when
the window is closed and the device is placed at the
same position, in order to understand the window’s
heat efficiency.

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8 Technical Specifications
Accuracy
Typically within ± 10W/m2[ ±3 BTU /
(ft2*h) ] or ±5% , whichever is greater in
sunlight; Additional temperature induced
error ±0.38 W/m2/℃[ ±0.12 [BTU/(ft2*h)]/
℃] from 25℃
Resolution
0.1W/m2or 0.1 [BTU/(ft2*h)]
Range
1999 W/m2or 634 [BTU/(ft 2*h)]
Accuracy
Attenuation
<±3%/year
Display
3¾digits LCD with maximum reading
3999
Sampling
Rate
About .25 seconds
Power
Supply
2 AAA Batteries
Battery life
50 hours during consecutive use
Dimensions
134 ×48 ×27 mm (H ×W ×D)
Weight
90g
Warranty
Limited two-year warranty

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9 Service, Repairs, Calibration
•The following are instructions regarding policies for
servicing, repairing or calibrating Anaheim Scientific
products. Turnaround time is usually less than ten
(10) working days unless expeditedservice is
requested and pre-arranged.
•Send an email to servi[email protected]
requesting an RMA number specifying your request
for either service/repair and/or calibration with your
product’s model number.
•Once you receive a reply from
[email protected], you will be asked
to ship prepaid to the address below. Package the
unit carefully using filler or bubble wrap, and if
possible, ship in the original box. Ship each unit
separately. (Anaheim Scientific is not responsible
for any shipping damage that may occur.)
•Include a packing list with each unit shipped stating
what type of service is required and include the
return shipping information: name, address and
telephone number.
•If the unit is in warranty, please provide the
following: proof of purchase or copy of the original
invoice.
•If the unit is out of warranty, prepayment is required
by Check, Money Order or Credit Card.
•Return all merchandise to Anaheim Scientific with
pre-paid shipping. The flat-rate repair charge for
Non-Warranty Service does not include return

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shipping. Return shipping to locations in North
American is included for Warranty Service.
•For overnight shipments and non-North American
shipping fees please contact Anaheim Scientific
Anaheim Scientific
ATTN: Service/Repair
22820 Savi Ranch Parkway
Yorba Linda, CA 92887
www.anaheimscientific.com

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10 Limited Two-Year Warranty
•Scientific warrants to the original purchaser that its
products and the component parts thereof, will be
free from defects in workmanship and materials for
a period of two years from date of purchase.
•Anaheim Scientific will, without charge, repair or
replace, at its option, defective product or
component parts. Returned product must be
accompanied by proof of the purchase date in the
form of a sales receipt.
•To he l p u s b e tte r s e rve y o u , ple a s e co m ple t e t h e
warranty registration for your new instrument via
our website www.anaheimscientific.com
•Exclusions: This warranty does not apply in the
event of misuse or abuse of the product or as a
result of unauthorized alterations or repairs. The
warranty is void if the serial number is altered,
defaced or removed.
•Anaheim Scientific shall not be liable for any
consequential damages, including without limitation
damages resulting from loss of use. Some states
do not allow limitations of incidental or
consequential damages. So the above limitation or
exclusion may not apply to you.
•This warranty gives you specific rights and you may
have other rights, which vary from state-to-state.

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22820 Savi Ranch Parkway
Yorba Linda, CA 92887
www.anaheimscientific.com
© 2013 Anaheim Scientific