Sekonic ST-50A User manual

Microprocessor-Based
Hygro-Thermograph
ST-50A / ST-50M
Operation Manual
Thank you for purchasing this Microprocessor-Based Hygro-Thermograph.
The essential information for the correct operation of the Hygro-Thermograph is described
in this manual. Please be sure to read this manual carefully before using the Hygro-
Thermograph.
CE Approved

- 2 -
Safety Information
This is a Class B product based on the standard of the Voluntary Control Council for Interfer-
ence from Information Technology Equipment (VCCI). If this is used near a radio or television
receiver in a domestic environment, it may cause radio interference. Install and use the equip-
ment according to the instruction manual.
●Pictorial Symbols
The following warnings and cautions are intended to prevent you and other people from being injured
and to prevent properties from being damaged. Please be sure to obsreve them to ensure your safe use
of the instrument. Various pictorial symbols are used in this manual. Please peruse the following descrip-
tions before proceeding to the text.
●Examples of Pictorial Symbols
Action liable to cause smoking or fire.
Action liable to get an electric shock.
Action prohibited.
Prohibition of disassembling or modifying actions.
Instruction to unplug the instrument for safety.
WARNING
Indicates a potentially hazardous situation that could lead the operator to death or setious injury .
CAUTION
Indicates a potentially hazardous situation that could lead the operatoe to slight injury or could cause
physical damage.

- 4 -
WARNING
●Precautions concerning AC adapter
• When connecting the AC adapter to the instrument and a plug receptacle, be sure to turn the power switch
OFF ( 【】
).
• When removing the inserted plug from the instrument or from the plug receptacle, never pull the cord.
• Never use any AC adapter other than the one provided by us.(Refer to Chapter12)
●Precautions concerning battery
• Do not charge, short-circuit, disassemble, heat or throw battery in fire.
• Before replacing the batteries, be sure to turn the power switch OFF (
【】
).
• Be sure to check the direction of the positive and negative poles carefully before inserting the batteries.
• Do not mix new and old batteries, or other types of batteries.
• When not using the instrument for a prolonged period, remove the batteries from the instrument.
• If leakage occurs, wipe out the fluid from the battery box, then insert new batteries.
●Using the instrument in abnormal situations may result in fire or getting an electric shock. If any abnormal
odor, sound, or smoke comes from the instrument, immediately turn off the power switch, then remove the
batteries and the AC adapter both from the instrument and from the plug receptacle. Make sure that the
smoke has stopped coming out of the instrument, then contact the distributor. Never repair it by yourself.
●Never modify or disassemble the instrument. Otherwise, a fire may be caused or you may get an electric
shock.
●Do not modify or disassemble the AC adapter. Otherwise, a fire may be caused or you may get an electric
shock.
●If you drop the insturment or cause damage to the cover, immediately turn off the power switch, remove
the batteries and the AC adapter both from the instrument and from the plug receptacle, then contact the
distributor.
●If foreign objects or water should enter the instrument, immediately turn the power switch OFF(
【】
),
remove the batteries and the AC adapter both from the instrument and from the plug receptacle, then
contact the distributor. If you keep operating the instrument, a fire may be caused or you may get an
electric shock.
●Never use the instrument near explosive or inflammable gases.
●Precautions concerning the instrument
• Never drop any objects like metals and inflammables in the opening.
• Keep the instrument away from dust, water or oil splashes.
CAUTION
●When not using the instrument, remove the AC adapter both from the instrument and from the plug
receptacle.
●Be sure to close all the covers before carrying the instrument, otherwise it may be damaged.
●Be sure to remove the AC adapter both from the instrument and from the plug receptacle before carrying it.
●Do not remove the sensor connector from the instrument unless attaching or detaching the extension
cable (option) or checking the instrument for maintenance. Otherwise, it will result in imperfect contact
or disconnection.
●Avoid the following environments to use the instrument, otherwise machine trouble may occur.
①Place under high radiation heat (direct sunlight)
②Place under mechanical vibration
③Near the source of electromagnetic field
④Place under influence of dust or lamp black
⑤Place easily affected by water or moisture
⑥Environment under influence of organic gas, inorganic gas or salt
●For maintenance, use a dry soft cloth and wipe the instrument lightly.
Do not use thinner, benzine or other volatile liquid and a wet cloth, otherwise the instrument may be
discolored or deformed.
●SD Card Usage Precautions.
①Do not use an SD I/O card (such as a wireless LAN card or communication card). This can cause
malfunctions ordamage to the ST-50M or the card.
②Before removing the SD card, set the [SD Card Record] switch to OFF, and check that the [MEMORY]
indicator no longer appears. Removing the SD card while the [MEMORY] indicator is fully lit or
blinking can corrupt the data.
③Do not pull forcefully when removing the SD card. This could damage the ST-50M or the SD card.
④If using a Mini SD card or Micro SD card, an SD card conversion adapter is required.
⑤SDHC cards, Mini SDHC cards, and Micro SDHC cards cannot be used.
⑥Use SD cards with a size from 128 MB to 2 GB and compliant with the SD standards. However,
operation is not guaranteed with all SD cards that satisfy this condition. For a list of the cards
where operation has been confirmed, please refer to the Sekonic Product Guide web page
("http://www.sekonic.co.jp/English/index.html).
Safety guarantee
If the instrument is used in a manner not specified by the manufacturer, the protection provided by theinstrument may be impaired.

- 5 -
Check Before Use
This instrument has passed our severe inspection, however,
the following points should be confirmed before use:
①Check the appearance of the instrument carefully to
make sure that the instrument is free from any damage.
②Check if all accessories are provided as specified.
The detail of the accessories is as follows:
If you find anything damaged or missing, please contact
us or the distributor from whom you purchased the
instrument.
7
9
Contents
Safety Information
Check Before Use
Chapter 1. Machine Call-outs................................ 7
Chapter 2. Installation............................................ 9
Chapter 3. Preparation for Measurement
■ Setting (Replacing) chart paper......................... 10
■ Inserting (Replacing) dry batteries..................... 11
■ Time to replace.................................................. 12
■ Setting (Replacing) recording pens ................... 12
■ Pen replacement mode...................................... 13
■ Connecting AC adapter...................................... 13
■ Connecting extension cable............................... 13
■ Inserting the SD card(ST-50M only) .................. 14
■ Removing the SD card(ST-50M only)................ 14
Chapter 4. Basic Operation
4-1. To start and stop recording ................................ 15
4-2. To change chart speed ....................................... 15
4-3. To select Celsius or Fahrenheit .......................... 15
4-4. Power saving mode ........................................... 15
Chapter 5. SD Card Writing Function (ST-50M Only)
5-1. Setting temperature recording range................. 16
5-2.
Starting and Stopping Data Writing to SD Card..... 17
5-3. Changing the SD Card Writing Interval.............. 17
5-4. Changing the Date............................................. 18
5-5. Changing the Time............................................. 18
5-6. Initializing the SD Card ...................................... 19
Chapter 6. Setting Recordeing Range
6-1. Setting temperature recording range................. 20
■ Setting range 0-50°C (30-130°F)....................... 20
■ Setting recording range manually...................... 20
6-2. Setting humidity recording range....................... 21
* The life of the attached batteries may be shorter than
the specified period because they have already been
used for trials. We recommend using new ones (size
D, alkaline) when you operate the instrument for prac-
tical use.
No. Parts Names Q’ty Remarks
1 Temperature recording pen 1 Red
2 Humidity recording pen 1 Blue
3 Chart paper 1 Z-folded plain paper
4 Dry battery 4 Used for trial
5 Operation Manual 1

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Chapter 7. Setting Alarm
7-1. Function overview.............................................. 21
7-2. Setting temperature alarm ................................. 22
7-3. Setting humidity alarm ....................................... 22
7-4. To initialize the alarm ......................................... 22
Chapter 8. Display indicators (ST-50M only) ........ 23
8-1. SD card recording cycle indicator...................... 24
8-2. Date indicator..................................................... 24
8-3. Time indicator ..................................................... 24
8-4. Normal measurement screen
(SD card recordable days indicator) ............... 24
8-5.
Temperature recording range setting indicator .......... 24
8-6. Humidity recording range setting indicator......... 24
Chapter 9. Useful Function
9-1. Pen trace oset compensation (POC)............... 25
■ Function overview.............................................. 25
■ Setting POC....................................................... 25
9-2. Marking function ................................................. 25
9-3. Indicating dew point
temperature and absolute humidity............. 25
Chapter 10. Sensor Calibtarion
10-1. Setting humidity alarm ..................................... 26
■ To check the calibration status ........................... 26
10-2. Calibrating temperature sensor ........................ 26
10-3. Calibrating humidity sensor .............................. 27
10-4. 2-point calibration of humidity sensoror........... 27
■ Calibration at 33% RH....................................... 27
■ Calibration at 75% RH....................................... 27
10-5. To initialize the calibrated value....................... 28
Chapter 11. Pen Position Adjustment
11-1. Periodic inspection........................................... 28
11-2. To check the adjustment status........................ 28
11-3.
Adjusting temperature recording pen position ..... 29
11-4. Adjusting humidity recording pen position........ 29
11-5. To initialize the adjusted value ......................... 29
Chapter 12. Maintenance
12-1. SFunction overview.......................................... 30
12-2. Replacement of sensor (assembly) ................. 30
12-3. Replacing the clock backup battery................. 30
Chapter 13. Data Files (ST-50M Only)
13-1. File Names....................................................... 32
13-2. Data Content.................................................... 32
Chapter 14. Troubleshooting
14-1. Troubleshooting tips......................................... 33
14-2. List of Error Messages..................................... 33
Chapter 15. Specifications.................................... 35

- 7 -
Chapter 1. Machine Call-outs
[LCD Screen]
『 』
indicates the current indication on the LCD.
① 『MODE 』
Comes on when you execute any setting.
② 『ALARM 』
Comes on when you set or check the alarm.
③ 『DATE 』(ST-50M only)
Comes on when you set or confirming the date.
④ 『TIME 』(ST-50M only)
Comes on when setting or confirming the time.
⑤ 『MEMORY 』(ST-50M only)
Comes on when writing data to the SD card and blinks
during SD card recognition, selecting SD card initializa-
tion, and while initialization is in progress.
⑥Battery life indicator
Indicates the battery life. (Not shown when the AC adapt-
er is used.)
⑦ 『AC 』
Comes on when the AC adapter is used.
⑧Temperature indicator
『D.P. 』
Blinks when a dew point temperature is displayed.
『23.1 』
Indicates the present temperature, (Celsius, Fahrenheit,
dew point temperature), various set items and set points.
『H』 ,
『L』
Comes on when the alarm is set and blinks when the set
alarm is given.
『°C 』 ,
『°F 』
Indicates the unit (Celsius or Fahrenheit) of the present
temperature.
⑨Humidity indicator
『71.0 』
Indicates the present humidity (relative humidity or abso-
lute humidity), various set items and set points.
『%』
,
『g/m3』
Indicates the unit of the present (relative or absolute) humidity.
『H』
,
『L』
Comes on when an alarm is set and blinks when an
alarm has occurred.
[Front view] Temperature recording pen
Humidity recording pen
Sensor
LCD
LCD Screen
Chart cassette
Control panel
Front door
Control panel door
Sensor terminal
Alarm output terminal
SD
SD card
AC
AC adapter terminal
[Side view]
〔LCD 〕
[LCD Screen]
①
②
⑩
⑧
⑫ ⑬⑪
③ ④ ⑤ ⑥ ⑦
l c c
_^qq=K=p^s b
bkqbo
a bt =ml f kq
^_pl i Ke r j f a f qv
j ^oh
l k
^i ^oj
l k l k
[Control panel]
DIP switch
c r k` qf l k Epq J RMj F
pmb ba Lo^ k db Ep qJ RM^ F

- 8 -
⑩ 『CAL. 』
Comes on when the sensor is calibrated or when the pen
position is adjusted.
⑪ 『CLEAR 』
Comes on or blinks when clearing any set point.
⑫ 『INTERVAL 』(ST-50M only)
Comes on when setting the SD card writing cycle.
⑬Chart speed/SD card information indicator
『REMAIN 』(ST-50M only)
Comes on when displaying the remaining space on the
SD card.
『SPEED 』
,
『mm/h』
Comes on when setting and displaying the chart speed.
『'』(ST-50M only)
Comes on when setting and displaying the date.
『10』
Displays the current chart speed, various setting items,
and setting values.
『s』
,
『m』
,
『h』
,
『D』
,
『M』(ST-50M only)
Displays the current SD card recording cycle and the
units of the available time left in the SD card (seconds,
minutes, hours, days, months).
[Control Panel]
【 】
indicates a switch or a key.
① 【POWER 】
Switch
Turns the power supply ON/OFF ( 【】
), or starts/stops
recording.
② 【BATT. SAVE 】
Switch
Reduces consumption of the batteries.
③
【FUNCTION 】
Key(ST-50M) / 【SPEED/RANGE 】 Key(ST-50A)
This is used to change the chart speed, SD card writing
cycle (ST-50M only), writing range, and pen adjustment
settings and to initialize the SD card (ST-50M only)
*
【
FUNCTION
】
Key =
【
SPEED/RANGE
】
Key in ST-50A.
④ 【ALARM 】
Key
Sets or checks the alarm, or changes the sensor calibra-
tion setting.
⑤ 【▲】
,
【▼】
Key
Used to switch the displayed information (ST-50M only)
and change the various settings.
⑥ 【ENTER/DEW POINT/ABSOL. HUMIDITY 】
Key
Registers the various settings, or displays the dew point
temperature or absolute humidity.
⑦ 【MARK 】
Key
Leaves a mark on the chart paper using a recording pen.
⑧DIP Switch
Sets the pen trace oset compensation (POC), selects
Celsius or Fahrenheit, and sets the recording range.
⑨SD Card Record Switch(ST-50M only)
Used when saving measurement data to the SD card.
CAUTION
Before opening the Control panel door, be sure to
open the Front door first.

- 9 -
Be sure to check the following points when installing the
instrument.
• The inclination of the body should fall within +/- 10 de -
grees both against the horizontal and the vertical (when
hanged on the wall.)
• The instrument should always stand as shown in the fig -
ure. If laid down, it may not work normally.
• When hanging it on the wall, fix the two screws 230 mm /
9.06 in. apart from each other.
CAUTION
The instrument weighs 2.9 kg approx. (including bat-
teries.) When hanging it, be sure to use the wall and
screws strong enough to hold 10 kg weight.
Chapter 2. Installation
230
230mm/abt. 9.06 in.
Holes for hanging on wall
(example)
Material of screw: Steel
3mm (abt. 0.12 in.)
5mm (abt. 0.20 in.)
7mm (abt. 0.28 in.)
15mm (abt. 0.59 in.)
3mm Approx.
5mm Approx.
15mm Approx.
Wall
ø 5-7mm
ø 3mm

- 10 -
Setting (Replacing) chart paper
①While pressing the stoppers on both sides of the chart
cassette, pull forward and remove it from the body.
CAUTION
• When replacing the chart paper, make sure that the
recording pens are raised. If not, this procedure may
cause damage to the instrument.
• See “Setting (Replacing) recording pens” in this
manual if the pens need to be raised.
Chapter 3. Preparation for Measurement
③Release the chart holders of the chart cassette, raising
the rear one (silver metal) and pulling down the front one
(transparent plastic), then insert the chart paper as the
arrow shows in the figure.
CAUTION
• Set the chart paper so that it is fed to the front. Set-
ting it in the opposite direction may cause the ma-
chine trouble.
• Set the chart paper so that the square holes come to
the left side and the rectangular holes come to the
right side.
CAUTION
Be sure to set the chart paper in the correct direc tion.
②Fan the chart paper carefully before setting.
④Pull out the end of the chart paper approx. 20 cm/7.87 in.
(3 or 4 teeth) and set it to the drum so that the teeth of
the sprocket wheel are properly engaged in the holes on
both sides of the chart paper.
Stopper
チャート紙
Chart paper
Drum
Chart holders
Chart paper
チャート紙
Chart paper

- 11 -
Inserting (Replacing) dry batteries
①Turn OFF ( 【】
) the power switch.
②Remove the battery cover on the rear side of the
body.
③Set four Size D batteries (LR20) in the battery case
according to the polarity indication inside the case.
④Return the battery cover.
CAUTION
• When using theAC adapter, be sure to turn OFF
(
【】
) the power switch.
• Do not use rechargeable batteries.
⑤Make sure that the chart paper is not raised from the
drum and close both the rear chart holder (silver matal)
and the front chart holder (transparent plastic).
⑥Turn the chart feed dial 2 or 3 times to make sure that
the chart paper is fed properly. At this time, check if the
chart paper is properly folded in the chart cassette.
⑦Place the chart cassette in the body, fit the protrusions to
the grooves of the body and push it in the arrow direction
until it clicks in place. Make sure that it is fixed securely.
Chart holders
Chart paper
Drum
２、
Turn it 2 or 3 times.
Chart feed dial
Chart cassette
Protrusions
Battery cover 4 Size D batteries
Press

- 12 -
温度記録ペン（赤色）
Temperature recording pen (Red)
湿度記録ペン（青色）
Humidity recording pen (Blue)
ペンホルダ
Penholders
Time to replace
The life of the batteries loaded in the instrument is indicat-
ed in the upper right corner of the LCD screen. The indica-
tor will change as follows:
CAUTION
• When the batteries run short, the bat-
tery life indicator will start blinking.
• When the AC adapter is used, the
battery life indicator will not appear.
• Data is not saved to the SD card
when the battery life indicator is blink-
ing.
• When the instrument is used at low
temperature, the battery will run short
quickly. Use the AC adapter (Option)
in such an environment.
• If the remaining battery level be -
comes low, the battery level indicator
may show an extremely low level
when the power is turned on or when
the pen is moved.In this case, a reset
may be applied, or writing to the SD
card may not be performed. Please
be aware that this is not a malfunc-
tion.
Setting (Replacing) recording pens
①Turn OFF ( 【 】
) the power switch.
②Raise the penholder lightly in direction of arrow.
③Remove the pen cap, and insert each pens into pen-
holders firmly. Have the pen chip reach the chart paper
slowly.
CAUTION
• If the penholders cannot be moved easily in such a
case as overlapping each other, see the following
paragraph “Pen replacement mode.”
• Do not move the penholder forcibly from side to side,
or do not press the pen tip hard to the chart paper. If
you do so, the instrument may be damaged.
• When removing the pen from the penholder, be sure
to hold the sides of the tip of the pen.
The battery voltage
is in the normal
state.
The batteries should
be replaced.
Penholders

- 13 -
Pen replacement mode
①Turn ON the power switch, then press the 【▼】
and
【EN-
TER 】 keys together.
②The 『MODE 』
indication appears and 『PEn 』 blinks in the
LCD.
③The 『PEn』
will stop blinking when the temperature
recording pen and the humidity recording pen get posi-
tioned on the chart paper, 25 mm from the left side and
25 mm from the right side, respectively.
④See the paragraph “Setting (Replacing) pen” to replace
the pen.
⑤To return to the normal measurement screen, press the
【▼】
and
【ENTER 】
keys together again.
Connecting AC adapter
To use the AC adapter, connect it to the AC adapter ter-
minal on the side panel of the body. While the AC adapter
is used, the 『AC 』 indication is displayed as shown in the
figure. If it is used together with battery, the priority will be
given to the AC adapter. In this case, the battery will be a
backup if the power supply is cut o due to a power failure.
CAUTION
When the AC adapter and the battery are used togeth-
er, disconnect the AC adapter periodically to check the
battery life on the LCD screen.
Connecting extension cable
To separate the sensor from the body for remote measure-
ment, use the extension cable. Three types of cables, 5m,
20m and 50m long are available.
①Remove the clamp for the sensor cord from the body.
②Disconnect the sensor connector, then connect the ex-
tension cable.
③Fix the extension cable with the clamp.
CAUTION
Before connecting the extension cable, be sure to
turn OFF (【】
) the power switch.
Sensor
Extension cable
Clamp
Sensor connector

- 14 -
Inserting the SD card (ST-50M only)
①Set the [SD Card Record] switch to OFF.
②Insert the SD card until it clicks into place in the SD card
slot.
③ 【MEMORY 】
blinks for a short time on the LCD. This indi-
cates that the information in the SD card is being loaded.
④When blinking of[MEMORY] on the LCD is finished, data
can be written to the SD card.
⑤To start writing to the SD card, set the [SD Card Record]
switch to ON.
Removing the SD card (ST-50M only)
①Set the [SD Card Record] switch to OFF.
②Check that 【MEMORY 】
no longer appears on the LCD.
③Gently press in the SD card inserted into the SD slot with
your finger until the SD card makes a clicking sound. The
SD can now be removed.
Sensor terminal
Alarm output terminal
AC adapter terminal
[Side view]

- 15 -
CAUTION
Be sure to keep the DIP switch No. 5 to No. 8 OFF state.
Chapter 4. Basic Operation
4-1.To start and stop recording
Turn ON the power switch. Wait 4.5 minutes or less till the
two pens get their positions to start recording. To stop re-
cording, turn OFF ( 【】
) the power switch.
4-2.To change chart speed
①Press the 【FUNCTION】
key once while the normal
measurement screen is displayed. The 『MODE 』 and
『SPEED 』
indications will appear on the screen, with
the chart speed displayed, blinking.
②Select the desired speed using the 【▲】
or
【▼】
key,
then press the 【ENTER 】 key. The chart speed indi-
cation will stop blinking to show the setting has been
completed.
③To return to the normal measurement screen, press
the
【FUNCTION 】
key.
4-3.To select Celsius or Fahrenheit
You can select Celsius (°C) or Fahr-
enheit (°F) by turning the DIP switch
1 OFF or ON. Celsius is initially se -
lected.
4-4.Power saving mode
To reduce the power consumption of the batteries, turn ON
the
【BATT. SAVE 】
switch.
Reference
When the
【BATT. SAVE 】
switch is turned ON, the chart
speed will be set to 2.5mm/h and the battery life will be
as long as about 4 months (ST-50M)/ 6 months (ST-
50A). We recommend you to select this mode in case
of unattended operation for a long time.
Reference
・The relation between available chart speeds andre-
cording periods is as shown below:
Chart speed Recording period
20mm (abt. 0.79 in.) /h 20 days approx.
10mm (abt. 0.39 in.) /h 1.5 months approx.
5mm (abt. 0.20 in.) /h 3 months approx.
2.5mm (abt. 0.10 in.) /h 6 months approx.
華氏（
Fahrenheit ( °F)
ON
1 2 3
・The display returns to the measurement screen if no
operation isperformed within one minute.
CAUTION
When using with batteries, if the remaining battery level be-
comes low, the battery level indicator may show an extremely
low level when thepower is turned on or when thepen is moved.
In this case, a reset may be applied, or writing to the SD card
may not be performed. Please be aware that this is not a mal-
function.

- 16 -
CAUTION
・Do not use an SD I/O card (such as a wireless LAN card
or communication card). This can cause malfunctions or
damage to the ST-50M or the card.
・Before removing the SD card, set the 【SD Card Record 】
switch to OFF, and check that the 【MEMORY 】 indicator
no longer appears.
Removing the SD card while the 【MEMORY 】 indicator is
fully lit or blinking can corrupt the data.
・Do not pull forcefully when removing the SD card. This
could damage the ST-50M or the SD card.
・Use SD cards with a size from 128 MB to 2 GB and
compliant with the SD standards. However, operation is
not guaranteed with all SD cards that satisfy this condi-
tion. For a list of the cards where operation has been
conrmed, please refer to the Sekonic Product Guide
web page.
・If using a Mini SD card or Micro SD card, an SD card
conversion adapter is required.
・SDHC cards, Mini SDHC cards, and Micro SDHC cards
cannot be used.
・SD cards are sold separately. Purchase a commercially-
available SD card for use.
・The operating temperature of the SD card varies de-
pending on themanufacturer and model, and so please
use an SD card that is suitable for the actual operating
environment.
Example: SD cards for the 0 to 55or -25 to 85tem-
perature range.
・A separate PC is required for loading the data written to
the SD card. The personal computer must have a built-in
SD card slot or SD card reader.
・If the SD card cannot be read by the ST-50M, use the
ST-50M to initialize the SD card. Do not initialize the SD
card using a PC.
・The graph data viewer application is for Windows ®only.
For customers who are using Macintosh ®or another OS,
please obtain a spreadsheet software program capable
of loading CSV files.
Chapter 5. SD CardWriting Function (ST-50M Only)
5-1.SD CardWriting Function
In addition to recording on chart paper, the ST-50M also
supports the writing of data to an SD card. A built-in clock
is included for recording the measurement date and time
data.
The ST-50M can write data to commercially-available SD
cards so that the data can be loaded to a PC using an SD
card slot or SD card reader. The data written to an SD card
is saved in CSV format, and this enables it to be loaded
directly into Microsoft®Excel and other applications. A
graph data viewer application (for Windows ®XP and Vista)
is available for download from the Sekonic Product Guide
web page (http://www.sekonic.co.jp/English/index.html) for
enabling the viewing and printing of graphs and data for
customers who do not have spreadsheet software.

- 17 -
5-2. Startingand Stopping Data Writing toSD Card
Insert the SD card and set the 【SD Card Write 】 switch to ON.
The MEMORY indicator turns on, and writing to the SD
card is started. To stop data writing, set the [SD Card
Write] switch to OFF.
CAUTION
・The error 700 occurs if the 【SD Card Write】switch is
set to ON without inserting an SD card.
・Set the write-protect tab on the SD card to OFF. If it
is left at ON, the error 702 occurs.
・
When the amount of available space on the SD card be-
comes 0, the error 704 occurs. Insert a new SD card.
・If the amount of available space on the SD card is 7
days or less, 【REMAIN】blinks. Obtain a new SD card.
・Data is not saved to the SD card when the battery life
indicator is blinking.
・When the battery level indicator changes from fully lit
to flashing, or vice-versa, data may not be written to
the SD card in some cases. Please be aware that this
is not a malfunction.
・
When using with batteries, if the remaining battery level
becomes low, the battery level indicator may show an
extremely low level when the power is turned on or
when the pen is moved. In this case, a reset may be
applied, or writing to the SD card may not be performed.
Please be aware that this is not a malfunction.
5-3. Changing the SD CardWriting Interval
①Pressing the 【FUNCTION】
key twice in the normal mea-
surementscreen shows 【MODE】 ,
【MEMORY 】
, and【IN-
TERVAL 】 , and the SD card writing interval begins to blink.
②Use the 【▲】
and
【▼】
keys to select the SD card writing
interval, and then press the 【ENTER 】 key to change the
indicator from blinking to fully lit and register the setting.
③To return to the normal measurement screen, press the
【FUNCTION 】
key.
CAUTION
・The maximum number of files that can be stored on a
single SD card is 512. This is equivalent to about 16
months of data.
・Note that the maximum number of files that can be
stored will be reduced if folders or files are created on
the SD card by a personal computer or other device
other than this instrument.
Reference
・The available SD card record intervals and record times
are as shown below.
SD card record
intervals
SD card size
128MB 256〜
2GB
1min 10months
16months
1.5min 14months
3min
16months
5min
6min
10min
12min
15min
30min
60min
・The display returns to the measurement screen if no
operation is performed within one minute.

- 18 -
Reference
・The display returns to the measurement screen if no
operation is performed within one minute.
Reference
・When the time setting is registered, the seconds are reset
to 0.
・The display returns to the measurement screen if no op -
eration is performed within one minute.
5-4. Changing the Date
①Pressing the 【FUNCTION 】
key three times in the normal
measurement screen shows 【MODE 】 ,
【DATE 】
, and the
year, month, and day. The year is blinking.
②Use the【▲】
and
【▼】
keys to change the year, and then
press the 【ENTER 】 key to change the blinking from the
year to the month.
③Use the 【▲】
and
【▼】
keys to change the month, and
then press the 【ENTER 】 key to change the blinking from
the month to the day.
④Use the 【▲】
and
【▼】
keys to change the day, and then
press the 【ENTER】 key to change the indicator from
blinking to fully lit and register the setting.
⑤To return to the normal measurement screen, press the
【FUNCTION 】
key.
5-5. Changing the Time
①Pressing the 【FUNCTION 】
key four times in the normal
measurement screen shows 【MODE 】 ,
【TIME 】
, and the
hours and minutes. The hours are blinking.
②Use the 【▲】
and
【▼】
keys to change the hour, and
then press the 【ENTER 】 key to change the blinking from
the hour to the minute.
③Use the 【▲】
and
【▼】
keys to change the minute, and
then press the 【ENTER 】 key to change the indicator
from blinking to fully lit and register the setting.
④To return to the normal measurement screen, press the
【FUNCTION 】
key.
CAUTION
・The clock of this instrument is set to Japan Standard
Time.
Before using for the first time, the time must be set for
your region.
・Automatic correction for summer time (daylight savings
time) is not supported.

- 19 -
CAUTION
・The SD card initialization screen will not be displayed if
the SD card is not inserted, if the [SD Card Write] switch
is set to ON, or write-protect tab on the SD card is set to
ON,or the battery level indicator is flashing.
・During initialization of the SD card, do not remove the
SD card or turn this instrument OFF. This could damage
the SD card.
・For some SD card types and sizes, initialization can take
an extended time. This is not a malfunction.
・The initialization process deletes all the data files on the
SD card. To delete a portion of the data files only, use a
PC to delete the files.
・When initializing the SD card , usage of new batteries or
an AC adapter is recommended.
5-6. Initializing the SD Card
The initialization process deletes all the data files on the SD
card.
①If the 【SD Card Write 】
switch is set to ON, set it to OFF.
②Pressing the 【FUNCTION 】
key five times in the normal
measurement screen shows 【MODE 】 ,
【MEMORY 】
, and
【CLEAR 】.
③Press the 【ENTER 】
key to change the 【CLEAR 】 indica-
tor from fully lit to blinking.
④Pressing the 【ENTER】
keyand the 【▼】 key at the same
time changes the 【MEMORY 】 indicator from fully lit to
blinking and starts initialization of the SD card.
⑤When initialization of the SD card is completed, the blink-
ing changes to fully lit, and "End" is displayed.
⑥To return to the normal measurement screen, press the
【FUNCTION 】
key.
Reference
・The display returns to the measurement screen if no
operation is performed within one minute. This does
not apply when initialization of the SD card is in prog -
ress.

- 20 -
【▲】/【▼】
Chapter 6. Setting Recordeing Range
6-1.Setting temperature recording range
The temperature recording range
can be set by changing over the DIP
switches.
CAUTION
Before changing over the DIP
switch, be sure to turn OFF ( 【 】
)
the power switch.
Setting range 0-50°C (30-130°F)
①Turn OFF ( 【 】
) the power switch, then turn ON the DIP
switch No. 3, and turn OFF the No. 4.
②When the power switch is turned ON, temperature will be
recorded in the range from 0 to 50°C or 30 to 130°F.
Setting recording range manually
①Turn OFF ( 【 】
) the power switch, turn ON the DIP
switches No. 3 and No. 4, and then turn the power switch
ON again.
②Press the 【FUNCTION 】
key five times (Six times when
the SD card is inserted and the [SD Card Record] switch
is set to OFF) while the normal measurement screen is
displayed.
『MODE 』
and
『r1』
will appear and the present
central temperature of the chart will blink on the left side.
『- -』
will blink instead if the recording range has not been
changed from the initial setting. (-20 to 80 °C or 0 to 170
°F)
③Change the temperature to be recorded in the center of
the chart paper with the 【▲】 or
【▼】
key, then press the
【ENTER 】
key. The central temperature will stop blinking
to show the setting has been completed.
④Then, the present recording range will blink on the right
side of the screen.
⑤Set the recording range 10 (+ / -10°C) or 25 (+ / -25°C)
in Celsius or 25 (+ / -25°F) or 50 (+ / -50°F) in Fahrenheit
with the
【▲】
or
【▼】
key, then press the 【ENTER 】 key.
The recording range will stop blinking to show that set-
ting has been completed.
Reference
If this setting is not required, press the 【FUNCTION】
key twice to return to the normal display.
ON
3 4
ON
3 4
ON
3 4
Sett ing Temperature
Record ing Range w ith DIP Sw itch
-20〜80
-20-80 °C or 0-170 °F
(humidity range 0-100%)
0〜50
0-50 °C or 30-130 °F
(humidity range 0-100%)
Manual setting

- 21 -
6-2.Setting humidity recording range
①Before setting, make sure that the DIP switches No. 3
and No. 4 are turned ON.
②Press the 【FUNCTION 】
key six times (Seven times
when the SD card is inserted and the [SD Card Re-
cord] switch is set to OFF) while the normal mea-
surement screen is displayed. 『MODE 』 and
『r2』
will
appear and the present central humidity of the chart
will blink on the left side. 『- -』 will blink instead if the
recording range has not been changed from the initial
setting. (0 to 100% RH)
③Change the humidity to be recorded in the center of
the chart paper with the 【▲】 or
【▼】
key, then press
the
【ENTER】
key. The central humidity will stop blink-
ing to show the setting has been completed.
④Then, the present recording range will blink on the
right side of the screen.
⑤Set the recording range 10 (+ / -10%) or 25 (+ / -25%)
from the central humidity with the 【▲】 or
【▼】
key,
then press the 【ENTER 】 key. The recording range
will stop blinking to show that setting has been com-
pleted.
Reference
If this setting is not required, press the 【FUNCTION】
key once to return to the normal display.
FUNC-
7-1.Function overview
Set the alarm for the abnormal value to inform you when
measured, with the 『H』 or
『L』
indicator blinking in the
LCD.
Reference
If the alarm has been set for 30.0 °C / 50.0 °F (50.0 %)
as the upper limit and the measured value is 30.0 °C /
50.0 °F (50.0 %) or higher, the 『H』 indicator will appear
and start blinking. If the current value becomes 29.5 °C
/ 49.5 °F (49.0 %) or lower, 『H』
will go out.
Also, if the same value has been set as the lower limit
and the measured value is 30.0 °C / 50.0 °F (50.0 %)
or lower, the
『L』
indicator will appear and start blinking.
If the current value becomes 30.5 °C / 50.5 °F (51.0 %)
or higher,
『L』
will goout. (The hysteresis is 0.5°C or 0.5
°F in temperature and is 1.0% RH in humidity.)
Chapter 7. Setting Alarm