TESTO 623 User manual

testo 623
Ambient Condition Recorder
Instruction manual
99 Washington Street
Melrose, MA 02176
Phone [phone]
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com

1 Contents
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1Contents
1Contents.................................................................................................25
2Safety and the environment..................................................................26
2.1. About this document......................................................................26
2.2. Ensure safety.................................................................................27
2.3. Protecting the environment............................................................27
3Specifications ........................................................................................27
3.1. Technical data...............................................................................27
4Product description...............................................................................28
4.1. Overview........................................................................................28
4.2. Basic properties.............................................................................30
5First steps ..............................................................................................30
6Using the product..................................................................................31
6.1. Commissioning..............................................................................31
6.2. Setting the limits............................................................................32
6.3. Performing settings........................................................................32
6.4. Flowchart.......................................................................................33
6.5. Measuring......................................................................................37
7Maintaining the product........................................................................41
8Tips and assistance...............................................................................42
8.1. Accessories and spare parts .........................................................42
8.2. Questions and answers.................................................................42
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2 Safety and the environment
2Safety and the environment
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2.1. About this document
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Use
> Please read this documentation through carefully and
familiarize yourself with the product before putting it to use. Pay
particular attention to the safety instructions and warning advice
in order to prevent injuries and damage to the products.
> Keep this document to hand so that you can refer to it when
necessary.
> Hand this documentation on to any subsequent users of the
product.
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Symbols and writing standards
Representa-
tion Explanation
Warning advice, risk level according to the signal
word:
Warning! Serious physical injury may occur.
Caution! Slight physical injury or damage to the
equipment may occur.
> Implement the specified precautionary
measures.
Note: Basic or further information.
1. ...
2. ... Action: more steps, the sequence must be
followed.
> ... Action: a step or an optional step.
- ... Result of an action.
Menu Element of the instrument or instrument display.
[Set] Control keys of the instrument.
... | ... Functions/paths within a menu.
“...” Example entries

3 Specifications
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2.2. Ensure safety
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> Do not store the product together with solvents. Do not use any
desiccants.
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> Only use the device in closed, dry rooms and protect it from rain
and moisture.
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> Only operate the product properly, for its intended purpose and
within the parameters specified in the technical data. Do not
use any force.
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2.3. Protecting the environment
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> Dispose of faulty rechargeable batteries/spent batteries in
accordance with the valid legal specifications.
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> At the end of its useful life, send the product to the separate
collection for electric and electronic devices (observe local
regulations) or return the product to Testo for disposal.
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3Specifications
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3.1. Technical data
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Characteristic Values
Parameters Temperature / Humidity
Units °C/°F
% RH, td, wb
Resolution Temperature: 0.1 °C
Humidity: 0.1 % RH
Measuring range Temperature: -10 to +60 °C
Humidity: 0 to 100 % RH (non-dewing)
Accuracy Temperature:
± 0.4 K + 1 digit
Humidity:
±2 %RH + 1 digit at 25 °C (10 to 90 %),
±3 % RH rest of range
Measuring rate 20 s
Operating
temperature -10 to +60 °C

4 Product description
Characteristic Values
Storage
temperature -20 to +60 °C
Battery type 4 x AA
Battery life at least 12 months
Housing material ABS
Protection class IP 30
Weight approx. 240 g (without batteries)
Dimensions
(LxWxH in mm) 185x105x36 185x112x47 (mounting clip folded out)
Warranty 24 months, warranty conditions: see
website www.testo.com/warranty
EC Directive 2004/108/EC
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4Product description
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4.1. Overview
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①Keypad
Key Function
Display max. value
Display min. value
Select histogram for temperature or humidity

4 Product description
Key Function
Select time interval
Change settings / select bar
Change settings / select bar
Confirm settings
Cancel input
Acknowledging an alarm
②Sensors
③Attachment device
④Battery compartment and instrument interface
⑤Mounting clip and wall fixture (integrated into housing)
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5 First steps
4.2. Basic properties
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Power supply
The instrument is powered optionally by:
• 4 batteries / rechargeable batteries, type AA
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Wall mounting
The distance between the upper and lower drill hole is 63 mm.
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5First steps
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Removing the protective film
> Remove the protective film from the display
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Inserting batteries/rechargeable batteries
1. Open the battery compartment on the rear of the instrument.
2. Insert batteries/rechargeable batteries (observe the polarity!)
3. Close the battery compartment.
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6 Using the product
6Using the product
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6.1. Commissioning
The date and time must be set on commissioning.
1. Select the required function with [Set].
If no button is pressed > 30 sec, the testo 623 changes to
Measuring Mode. To perform additional settings, press and
hold [Set] for 2 sec.
> The adjustable parameter flashes.
2. Set values with [◄] or [►]and confirm entry with [Set] (for
settings, see following table).
To scroll rapidly forward and back in the respective menu,
press and hold [◄ or ►].
Press [Esc] to cancel settings without saving them.
Hold [Set] down for 2 s to save previously set values and
leave the menu.
- Instrument returns to the display.
Display Function Setting option
DD.MM.YYYY flashes
or
MM.DD.YYYY flashes
Set date format DD.MM.YYYY = day,
month, year
MM.DD.YYYY =
month, day, year
Year flashes Set year 2009 - 2099
Month flashes Set month 01 - 12
Day flashes Set day 01 - 31
24H or 12H (AM/PM)
flash Set time format 24h/12h
Hour flashes Set hour value 00 - 23 or 01 - 12
Minute flashes Set minute value 00 - 59
Second flashes Set second value 00 - 59
°C flashes Set unit for
temperature °C/°F
Update date & time flashes ac tivate Yes / deac tivate No activa te Yes / deactivate No
If the power supply is interrupted the settings are being
saved for at least 3 min.

6 Using the product
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6.2. Setting the limits
Temperature
When changing the temperature unit from °C to °F, the set limit
values are converted
Humidity
When changing the humidity unit (%, td, wb), the set limit values
are not converted. The limit values must be reset via the Setup
menu.
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3.
6.3. Performing settings
1. Press and hold [Set] for 2 s.
> Display flashes.
2. Select the required function with [Set].
> The adjustable parameter flashes.
3 Set values with [◄] or [►]and confirm entry with [Set] (for
settings, see following table).
To scroll rapidly forward and back, press and hold [◄ or
►].
Press [Esc] to cancel settings without saving them.
Hold [Set] down for 2 s to save previously set values and
return to the current reading display.
If the entire Setup menu is run through, the settings made
are automatically stored.
If no key is pressed within 30 s, the screen reverts to the
current reading display automatically. No settings are
saved.
- Instrument changes to the next display function

6 Using the product
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6.4. Flowchart
A detailed description of the points , , , , ,  can be
found on the following pages.

6 Using the product
No. Display Function Setting
option/value
①and °C/°F
light up, ON or
OFF flashes
Activate or
deactivate display
for upper
temperature limit
alarm
Deactivate: OFF
Activate: ON
Only if ON is
selected
Upper limit
value flashes
Set value for upper
temperature limit
alarm
-
and °C/°F
light up, ON or
OFF flashes
Activate or
deactivate display
for lower
temperature limit
alarm
Deactivate: OFF
Activate: ON
Only if ON is
selected
Lower limit
value flashes
Set value for lower
temperature limit
alarm
-
and %light
up, ON or OFF
flashes
Activate or
deactivate display
for upper humidity
limit alarm
Deactivate: OFF
Activate: ON
Only if ON is
selected
Upper limit
value flashes
Set value for upper
humidity limit alarm -
and %light
up, ON or OFF
flashes
Activate or
deactivate display
for lower humidity
limit alarm
Deactivate: OFF
Activate: ON
Only if ON is
selected
Lower limit
value flashes
Set value for lower
humidity limit alarm -
②Calibration!
lights up,
ON or OFF
flashes
Activate or
deactivate
calibration reminder
function
Deactivate: OFF
Activate: ON

6 Using the product
No. Display Function Setting
option/value
Only if ON is
selected
Calibration!
lights up,
Year flashes
Set year 2009 - 2099
Only if ON is
selected
Calibration!
lights up,
Month flashes
Set month 01 - 12
③Reset Memory
flashes Deleting memory Deactivate: OFF
Activate: ON
④ Update date &
time? lights up,
No flashes
Set date and time
No change Select Yes
Select No
Only if Yes is
selected
DD.MM.YYYY
flashes
or
MM.DD.YYYY
flashes
Set date format DD.MM.YYYY =
day, month, year
MM.DD.YYYY =
month, day, year
Only if Yes is
selected
Year flashes Set year 2009 - 2099
Only if Yes is
selected
Month flashes Set month 01 - 12
Only if Yes is
selected
Day flashes Set day 01 - 31

6 Using the product
No. Display Function Setting
option/value
Only if Yes is
selected
24H or 12H
(AM/PM) flash Set time format 24H/12H
Only if Yes is
selected
Hour flashes Set hour value 00 - 23 or 01 - 12
Only if Yes is
selected
Minute flashes Set minute value 00 - 59
Only if Yes is
selected
Second flashes Set second value 00 - 59
⑤°C flashes Set unit for
temperature °C/°F
% flashes Set unit for humidity %, td, wb

6 Using the product
No. Display Function Setting
option/value
⑥Manual Scale
or Auto Scale
flashes
Choose between
automatic and
manual scaling
Manual Scale or
Auto Scale
Only if Manual
Scale is
selected:
Manual Scale
and upper limit
value flash
Set value for upper
limit -
Only if Manual
Scale is
selected:
Manual Scale
and lower limit
value flash
Set value for lower
limit -
If the power supply is interrupted the settings are being
saved for at least 3 min.
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6.5. Measuring
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With max./min., the time that it occurred and the
corresponding value (°C/% RH) is shown.
Displaying max. values
> Press [Max].
If Max. flashes, the past max. values can be viewed with [◄] or
[►].
If the max. temperature value is shown, press []to
display the max. humidity value.
If the [Max] key is not pressed for > 5 min, the screen
automatically reverts to the current display

6 Using the product
Displaying min. values
> Press [Min].
If Min. flashes, the past min. values can be viewed with [◄] or
[►].
If the min. temperature value is shown, press []to
display the min. humidity value.
If the [Min] key is not pressed for > 5 min, the screen
automatically reverts to the current display
Histogram
①Bar
②Bar segment
③Time interval
④Lower display value
⑤Displayed unit (temperature or humidity)
⑥Upper display value

6 Using the product
⑦Manual Scale:
Manually set upper and lower limit values that do not change.
Auto Scale:
The auto scale is calculated in such a way that all shown
readings lie within the scale.
•Upon changing the scaling, the upper and lower display
value and the Auto Scale symbol flash.
• The histogram shows 12 bars each of 20 segments.
◦The internal memory can save data for up to 90 days.
When the maximum memory capacity is reached, the
oldest measurement values are automatically
overwritten. (First in / first out principle).
◦With Manual Scale:
The lowest bar element of a bar flashes:
The measured value is below the lower display value.
◦The uppermost bar element flashes:
The measured value is above the upper display limit.
Displaying the humidity/temperature profile
To change the profile between humidity and temperature:
> Press [].
Setting the time axis of the histogram
To set the time axis:
> Press [►―◄].
The time axis can be set to 5 different time
intervals.
Time interval per
bar Histogram total time
5 min
10 min
1 h
2 h
24 h
1 h
2 h
12 h
24 h
12 days

6 Using the product
To display the mean reading:
> Press [◄]or [►]
- The selected bar or bar element flashes and the relevant
readings, start time and start date are displayed.
To display the max. temperature value and max. humidity value:
> Press [Max]
To display the min. temperature value and min. humidity value:
> Press [Min].
Display history:
> The history of the the last 90 days can be displayed with [◄]or
[►].
Acknowledging an alarm
Alarm was triggered:
- LED flashes
- The reading that was exceeded or undershot flashes
To clear an alarm:
> Press [Alarm].
- Alarm is cleared
With the alarm activated and a change to the setup menu,
the current alarm is acknowledged.
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7 Maintaining the product
7Maintaining the product
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Changing batteries/rechargeable batteries
CAUTION
Incorrectly inserted batteries / rechargeable batteries can
damage the instrument!
> Observe the polarity when inserting the batteries /
rechargeable batteries.
1. Open the battery compartment on the rear of the instrument.
2. Remove spent batteries / rechargeable batteries from the
battery compartment and insert new batteries / rechargeable
batteries (type AA)
- Instrument turns on automatically.
3. Close the battery compartment.
If the power supply is interrupted the settings are being
saved for at least 3 min.
If the instrument is not used over a longer period, the
batteries/rechargeable batteries should be removed from
the instrument to prevent damage to the instrument and the
batteries/rechargeable batteries.
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Cleaning the instrument
> If the housing of the instrument is dirty, clean it with a damp
cloth.
Do not use any aggressive cleaning agents or solvents! Weak
household cleaning agents or soap suds can be used.
Do not clean the instrument with compressed air, otherwise
the sensor may be damaged.
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8 Tips and assistance
8Tips and assistance
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8.1. Accessories and spare parts
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Description Article no.
Calibration and adjustment software incl.
USB cable 0554 6230
DKD humidity calibration certificate,
electronic hygrometer; calibration points
11.3 % RH and 75.3 % RH at 25 °C
0520 0206
ISO humidity calibration certificate, calibration
points 11.3 % RH and 75.3 % RH at 25 °C 0520 0006
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8.2. Questions and answers
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Question Possible causes
Instrument displays LO Below -20 °C
Instrument displays HI Above +70 °C
Instrument displays Battery life is approx. 1 month
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Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
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