RS PRO ISM 400 User manual

Instruction Manual
ISM 400
Solar Power Meter
FREN IT DE ES
READMEMORY
SET POWER / %
HOLD
2
MODETIME
2

Solar Power Meter / EN
08/15/16 Version No. 01
Table of Contents
1. INTRODUCTION.............................................................1
2. FEATURES AND APPLICATIONS................................. 2
3. SPECIFICATIONS ..........................................................4
4. PARTS............................................................................5
5. OPERATIONS.................................................................9
5-1 Solar Power Measurement.......................................9
5-2 Using the MAX MIN Recording Mode for Solar
Power Measurement..............................................10
5-3 Solar Power Transmission Measurement...............11
5-4 Integrated Solar Energy Measurement...................12
5-5 Manual Data Memory Write and Read Mode .........13
5-6 Disable Auto Power off Function............................14
5-7 Setting the Calibration Function (CAL)...................14
5-8 Zero Reading Adjustment.......................................15
6. BATTERIES..................................................................16
7. MAINTENANCE............................................................17

Solar Power Meter / EN
1 08/15/16 Version No. 01
1. Introduction
The digital solar power meter is a precision instrument
used to measure solar radiation in the field.
It is fully cosine corrected for the angular incidence of
solar illumination.
The solar power meter is compact, rugged and easy to
operate.
The solar sensitive component used in the meter is a
very stable, long-life silicon photovoltaic detector.

Solar Power Meter / EN
08/15/16 Version No. 01 2
2. Features and Applications
Features :
4 digit LCD reading
Wide spectral range
Excellent long term stability
Cosine corrected
Automatic transmission measurements
Select either power or transmission
Solar energy measurement
Current time setting function
User calibration factor setting function.
End-mount light sensor
Select either W/m
2
or Btu / (ft
2
x h) units
Data hold/MAX/MIN/AVG modes
Manual Data Memory and Read function. (99 sets)
Auto power off function
Applications :
The meter can directly measure the solar power radiated from
any direction, angle or position, and can be mounted firmly on
a tripod. The meter can also calculate the total solar energy
against elapsed time or calculate the average solar energy
per hour.
1. Solar Power Panel Industry:
The meter can be used to measure the solar power at the
installation to determine the best location, angle and
direction before fitting the solar panel.

Solar Power Meter / EN
3 08/15/16 Version No. 01
2. Solar Power Research:
The meter can be used for solar power research and
development, as a tool of education and to check the
efficiency of solar cells.
3. Agriculture:
Vegetables, flowers and plants are influenced by sunlight,
especially when cultivated in a greenhouse. The meter can
measure the solar power and help optimize plant growth.
4. Solar transmission measurement:
The meter can measure the solar transmission of glass,
heat insulation papers, parasols, sunshades etc.
For example:
Compare the solar power radiation measured before and
after a sunshade is installed. The measured readings help
determine whether the sunshade material is good at
reducing the solar power transmission.
5. Construction:
The meter can check the solar radiation at any angle and
any time, which is helpful when installing sheltering
systems to control the indoor temperature efficiently and
save energy.
Electricity can be produced by combining the building materials
with the solar power panel. The meter can measure the solar
power radiation to obtain the highest efficiency.

Solar Power Meter / EN
08/15/16 Version No. 01 4
3. Specifications
•
Display：LCD display, 4 digit LCD reading.
• Measuring Range：2000 W/m
2
, 634 Btu / (ft
2
x h)
• Resolution：0.1 W/m
2
, 0.1 Btu / (ft
2
x h)
•
Overrange Display：LCD will show “OL” symbol.
•
Spectral Response : 400 to 1000nm
•
Accuracy：Typically within ±10 W/m
2
[±3 Btu / (ft
2
x h)] or
±5%, whichever is the greatest in sunlight ;
Additional temperature induced error
±0.38 W/m
2
/°C [±0.12 Btu / (ft
2
x h)/ °C] from 25°C
•
Angular Accuracy : Cosine corrected < 5% for angles < 60°
•
Drift : < ±2% per year
•
Sampling Rate : 4 times/sec.
•
Photo Detector：One silicon photovoltaic detector.
•
Manual Data Memory Capacity：99 sets.
•
Operating Temperature & Humidity：
0 to 50°C（32 to 122°F）& 0% to 80% RH.
•
Storage Temperature and Humidity：
-10 to 60°C（14 to 140°F）& 0% to 70% RH.
•
Power Source：4 X AAA batteries.
•
Battery Life ( typical ) ：100 hours ( carbon zinc ).
•
Meter Dimensions/Weight：H110 x D34 x W64mm / 158g
•
Accessories：Instruction manual, batteries, Tripod mounted
screw.

Solar Power Meter / EN
5 08/15/16 Version No. 01
4. Parts
TIME MODE
9
2
3
5
7
4
6
8
1
HOLD
POWER / %SET
MEMORY READ
2
2
1. Solar sensor.
2. LCD Display：Display 4 digit displays with a maximum
reading of 9999, the measured values, unit function
symbols, and decimal points etc.
3. TIME key :
Push key to turn on the meter, hold it on for 3
seconds to turn off the meter.

Solar Power Meter / EN
08/15/16 Version No. 01 6
Push TIME key to switch between minute : second
display and day – hour display. Note: this is effective
once the day and time have been set.
(see 5. SET ↵key )
4. HOLD/ MODE key :
HOLD Function : Push this key momentarily to freeze
or unfreeze the displayed readings.
Recording Mode : Push this key for 3 seconds to
launch into MIN /MAX / AVG recording mode.
Push this key to select between maximum (MAX),
minimum (MIN), average (AVG) and current (MAX
MIN AVG) reading. Push this key for 3 seconds to exit.
Disable Auto Power Off : Push and hold this key,
when turning on the meter, the flashing Auto Power off
symbol “÷” will disappear from the LCD.
5. SET ↵key :
Unit Select : Push this key to switch the unit between
W/m
2
and Btu / (ft
2
x h).
Real Time Setting Mode : Push this key for 3
seconds to enter the time setting mode.
The display shows “ - ” ( Day-Hour )
Push ,andkeys to set the day-hour
Push again to move to “ : ” (Minutes:Seconds)
Push ,andkeys to set the minutes: seconds
Push ↵key to store the time settings and start the
integrated solar energy measurement.

Solar Power Meter / EN
7 08/15/16 Version No. 01
Calibration Factor Setting Mode : Push and hold this
key, when turning on the meter. The LCD displays
“CAL” and one flashing digit.
Push ,andkeys to set up desired calibration
factor values. Push ↵key to store and exit.
6. POWER / % key :
Power and Transmission % Function Select : Push
this key to select power or transmission (%) function.
Power and Energy Units Select : In the integrated
solar energy mode, push this key to select power or
energy units.
Zero Adjustment : Push and hold this key for 3
seconds, when turning on the meter, the LCD will
show “CAL”. Cover the solar detector to zero the
reading then push ↵key, the LCD will momentarily
display “MIN” to confirm the zero adjustment.
key : In READ mode, push this key to increase the
memory location.
In setting mode, push this key to increase the parameter.
7. MEMORY key :
Memory Function : Push this key momentarily to store a
measuring value.
Clear the stored Data : Push and hold this key, when
turning on the meter. The LCD shows “ CLr”.
Push key to select “ ” or “ ”. to erase the
memory data. Push the ↵key to confirm the selection.
key : In setting mode, push this key to move cursor to
the desired position.

Solar Power Meter / EN
08/15/16 Version No. 01 8
8. READ key :
Read Function : Push this key to enter READ mode,
then push or key to select the desired stored
number of data to read. Push ↵key to exit.
key : In the READ mode, Push key to select
decrease the memory location.
In the setting mode, Push key to decrease the
parameter.
9. Tripod mounted screw.
To mount on a tripod, remove the screw and replace with
the tripod thread adapter supplied.

Solar Power Meter / EN
9 08/15/16 Version No. 01
5. Operations
The meter uses a silicon photovoltaic detector mounted in
a cosine-corrected head to provide solar radiation
measurements for solar, agricultural, meteorological, and
hydrological applications.
5-1 Solar Power Measurement
In power mode, the meter measures the solar radiation
powel level.
1. Push “ ” key to turn on the meter.
2. Push “SET” key to select the desired W/m
2
or Btu / (ft
2
x h) unit.
3. Position the meter with the solar sensor facing the sun
directly.
4. Read the solar power value from the LCD display.
5. Push “HOLD” key, if the displayed value needs to be
held.
Push the “HOLD” key again to exit.
Calibration
factor

Solar Power Meter / EN
08/15/16 Version No. 01 10
5-2 Using the MAX MIN Recording Mode for Solar Power
Measurement
1. Push the “ ” key to turn on the meter.
2.Push “SET” key to select the desired W/m
2
or Btu / (ft
2
x h)
unit.
3. Position the meter with the solar sensor facing the sun
directly.
4. Push “MODE” key for 3 seconds to enter MAX MIN
Recording mode. The maximum, minimum, and average
values are then reset to the present reading, the LCD
displays “MAX” and the auto power off feature is
disabled.
5. Push “MODE” key to select between the display of the
maximum (MAX), minimum (MIN), average (AVG), and
current (MAX MIN AVG) readings. The average reading
is the average of the last 4 measured values.
6. Push “MODE” key for 3 seconds to exit.

Solar Power Meter / EN
11 08/15/16 Version No. 01
5-3 Solar Power Transmission Measurement
In transmission mode, the meter is able to calculate the solar
transmission percentage associated with a given material
such as glass, film or other transparent materials.
1. Push the “ ” key to turn on the meter.
2. Push “SET” key to select the desired W/m
2
or Btu / (ft
2
x h) unit.
3. Position the meter with the solar sensor facing the sun directly.
4. Push “POWER / %” key to transmission mode, LCD then
shows “ %” mark.
5. Push “↵” key to store the solar power measured value
as a reference, LCD then shows “100.0%”.
6. Put the glass or film material between the solar source
and the meter solar sensor.
7. Read the LCD display.
8. Push “HOLD” key, if the displayed value needs to be held.
Push “HOLD” key again to exit data hold mode.
9. Remove the sample material and confirm the meter
returns to 100.0%. If the meter does not display 100.0%
with the sample removed, ignore the reading and begin
the test process again.
10. Push “POWER / %” key to exit.

Solar Power Meter / EN
08/15/16 Version No. 01 12
5-4 Integrated Solar Energy Measurement
The meter can measure the amount of sunlight available at
the installation site of a PV system. The meter can calculate
the total solar energy against elapsed time or calculate the
average solar energy per hour.
The quantity of sunlight reaching a location is effected by
the time of day, the climate (especially the cloud cover,
which scatters the sun’s rays), and the air pollution in the
region.
1. Push the “ ” key to turn on the meter.
2. Push “SET” key to select the desired W/m
2
or Btu / (ft
2
x h) unit.
3. Position the meter with the solar sensor facing the sun
directly.
4. Push “SET” key for 3 seconds to enter the real-time
setting. The display shows “ - ” ( Day-Hour )
5. Push ,andkeys to set the day-hour
6. Push again to move to “ : ” (Minutes:Seconds)
7. Push ,andkeys to set the Minutes: Seconds
8. Push “↵” key to store the real-time and start integral solar
energy measurement.
Hour
Minute
Second

Solar Power Meter / EN
13 08/15/16 Version No. 01
9. Push “POWER / %” key to select solar power or
integrated solar energy units.
10. Push “TIME” key to switch between day-hour and
minute : second time display.
In this mode, the “HOLD MODE” key and Auto Power
Off are disabled.
11. Push and hold “ ” key for 3 seconds to exit and turn off
the meter.
5-5 Manual Data Memory Write and Read Mode
1. Clear the internal stored data
Push “ ” key to turn off the meter.
Push and hold "MEMORY" key, when turning on the meter
again, LCD will display " CLr "
Push “” key to select “ ” or “ ” then push “↵”
to confirm.
2. Manual data storage
Push "MEMORY" key momentarily to store current LCD
reading to the memory. Total memory size is 99 sets.

Solar Power Meter / EN
08/15/16 Version No. 01 14
3. Manual memory data READ
Push "READ" key to read manual recorded data.
The LCD then shows " R " mark.
Push “” or “” key to select the desired memory
address number data for display.
Push “↵” key to exit.
5-6 Disable Auto Power off Function
The meter will turn off automatically if no key is pushed for 10
minutes.
Disable auto power off function :
1. Push " " key to turn off the meter.
2. Push and hold "HOLD" key when turning on the meter
again, the auto power off function will be disabled. The
auto power off symbol "÷" will disappear.
3. Auto power off function will be actuated every time the
meter is turned on.
5-7 Setting the Calibration Function (CAL)
The calibration factor CAL serves to calibrate the result
display. The solar power value measured internally is
multiplied by the value of CAL that has been entered and
the resulting value is displayed or stored. The CAL setting
range is from 0.000 to 9.999. The calibration factor
adjustment method needs a standard solar meter or
calibrated light source as a reference.

Solar Power Meter / EN
15 08/15/16 Version No. 01
1. Push & hold "SET" key, when turning on the meter to set
up the calibration factor, the LCD displays "CAL" and the
first digit that can be changed starts flashing.
2. Push “” key to select the desired flashing digit.
3. Push “” or “” key to the desired value.
Repeat step 2 and 3 for the remaining digits until the
displaying value is the same as the standard reference.
4. Push “↵” key to store the new setting value and exit.
5-8 Zero Reading Adjustment
1. Push & hold “POWER / %” key when turning on the meter
to zero the reading , the LCD displays “CAL”.
2. Cover the solar sensor and push the ↵key to zero the
reading, the LCD will momentarily display “MIN” to
confirm the zero adjustment .

Solar Power Meter / EN
08/15/16 Version No. 01 16
6. Batteries
1. If the battery capacity is low, the LCD will display
"
+
"；this requires the batteries to be replace with
standard 4 x 1.5V AAA-size batteries.
2. Release the screw on the back of the meter and remove
the carrying clip / battery cover.
3. Disconnect the batteries from the instrument and replace
them with standard 4 x 1.5V AAA-size batteries and
replace the cover.
Note : Make sure the battery polarity is observed.

Solar Power Meter / EN
17 08/15/16 Version No. 01
7. Maintenance
1. The white plastic plate on the top of the meter should be
cleaned with a damp cloth when necessary.
2. Do not put the instrument in a place where temperature or
humidity is excessively high.
3. The calibration interval for the solar sensor will vary
according to operational conditions, but generally the
sensitivity decreases in direct proportion to solar light
intensity multiplied by the operational time. Therfore in
order to maintain the basic accuracy of the instrument,
periodic calibration is recommended.