623 - Measuring equipment Testo - Free user manual and instructions

Product type	Temperature/humidity data logger
Brand	Testo
Model	623
Measured parameters	Temperature, relative humidity, dew point (td), wet bulb (wb)
Temperature measuring range	-10 to +60 °C
Humidity measuring range	0 to 100% RH (non-condensing)
Temperature accuracy	±0.4 K + 1 digit
Humidity accuracy	±2% RH + 1 digit at 25°C (10 to 90% RH), ±3% RH remainder
Temperature resolution	0.1 °C
Humidity resolution	0.1% RH
Measurement rate	20 s
Display	LCD screen with histogram, max/min values, alarms
Main functions	Recording and display of measured values, 12-bar histogram, high/low alarms, dew point and wet bulb calculation, display of max/min values with time
Power supply	4 AA batteries (alkaline or rechargeable)
Battery life	At least 12 months (normal use)
Dimensions (L x W x H)	185 x 105 x 36 mm (without clip); 185 x 112 x 47 mm (with fold-out clip)
Weight	Approx. 240 g (without batteries)
Housing material	ABS
Protection class	IP30
Maintenance	Clean with a damp cloth; no solvents or harsh cleaners
Safety	Do not store with solvents; use in dry indoor environment; observe technical limits
Spare parts / accessories	Calibration and configuration software (ref. 0554 6230), humidity calibration certificates
Warranty	24 months (conditions at www.testo.com/warranty)

Frequently Asked Questions - 623 Testo

What to do if the device displays LO or HI?

If the display shows LO, the temperature is below -20 °C. If HI, it exceeds +70 °C. Ensure the probe is within the measuring range and the batteries are sufficient.

How to set the date and time?

In standby mode, press and hold the [Set] button for two seconds. Follow the on-screen prompts to set year, month, day, hour, minutes and seconds. Confirm with [Set].

How to change the temperature unit (°C/°F)?

Access the configuration menu by pressing [Set] for two seconds. Navigate to the °C option and select °C or °F using [<] or [>]. Confirm with [Set].

How to view the maximum and minimum values?

Press [Max] to display the max values. Use [<] and [>] to scroll through the records. Press [Max] again to toggle between temperature and humidity. Similarly, use [Min] for the min values.

How to set the temperature and humidity alarms?

Press and hold [Set] for two seconds. Use the arrow keys to select the upper/lower limit options. Set ON and adjust the desired value. Confirm with [Set].

How to clean the device?

Use a damp cloth. Do not use solvents or harsh cleaners. You can use mild soap. Avoid compressed air which could damage the sensor.

When should I change the batteries?

When the display dims or the device does not power on. Use 4 AA batteries (alkaline or rechargeable). Observe polarity. Settings are retained for at least 3 minutes after power off.

How to cancel an alarm?

When the alarm triggers, the LED flashes and the limit value flashes on the screen. Press [Alarm] to acknowledge. If the alarm remains active, check the values.

What to do if the screen displays 'Calibration!'?

This is a calibration reminder. You can enable or disable it in the configuration menu. If you wish to recalibrate, contact Testo or use the optional software (ref. 0554 6230).

How to reset the memory?

In the configuration menu, select the Reset Memory option and set it to ON. Confirm with [Set]. This will erase all stored data.

USER MANUAL 623 Testo

testo 623 · Ambient Condition Recorder

Bedienungsanleitung

testo 623 · Ambient Condition Recorder

Instruction manual

German 3
English 25
French 45
Spanish 67

1 Inhalt

Ambient Condition Recorder

Instruction manual

1 Contents

1 Contents 25
2 Safety and the environment. 26

2.1. About this document 26
2.2. Ensure safety 27
2.3. Protecting the environment 27

3 Specifications 27
3.1. Technical data 27
4 Product description. 28

4.1. Overview 28
4.2. Basic properties 30

5 First steps 30
6 Using 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

7 Maintaining the product 41
8 Tips and assistance. 42

8.1. Accessories and spare parts 42
8.2. Questions and answers 42

2 Safety and the environment

2.1. About this document

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.

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.
i	Note: Basic or further information.
1. ...	Action: more steps, the sequence must be followed.
2. ...
> ... 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	ns/paths within a menu.
“...”	Example entries

2.2. Ensure safety

Do not store the product together with solvents. Do not use any desiccants.
Only use the device in closed, dry rooms and protect it from rain and moisture.
Only operate the product properly, for its intended purpose and within the parameters specified in the technical data. Do not use any force.

2.3. Protecting the environment

Dispose of faulty rechargeable batteries/spent batteries in accordance with the valid legal specifications.
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.

3 Specifications

3.1. Technical data

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
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)	185x105x36185x112x47 (mounting clip folded out)
Warranty	24 months, warranty conditions: see website www.testo.com/warranty

EC Directive 2004/108/EC

4 Product description

4.1. Overview

① Keypad

Key Function
Max	Display max. value
Min	Display min. value
%	Select histogram for temperature or humidity
Select time interval
Change settings / select bar
Change settings / select bar
Confirm settings
Cancel input
Acknowledging an alarm

② Sensors

③ Attachment device
④ Battery compartment and instrument interface
⑤ Mounting clip and wall fixture (integrated into housing)

4.2. Basic properties

Power supply

The instrument is powered optionally by:

• 4 batteries / rechargeable batteries, type AA

Wall mounting

The distance between the upper and lower drill hole is 63~mm

5 First steps

Removing the protective film

Remove the protective film from the display

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.

6 Using the product

6.1. Commissioning

The date and time must be set on commissioning.

1. Select the required function with [Set].

i 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.

1. 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
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
If the power supply is interrupted the settings are being saved for at least 3 min.

6.2. Setting the limits

Temperature

When changing the temperature unit from ^ C to ^ , 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.

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

6.4. Flowchart

A detailed description of the points ①, ②, ③, ④, ⑤, ⑥ can be found on the following pages.

No.	Display Function		Setting option/value
1	and °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	-
2	Calibration! lights up, ON or OFF flashes	Activate or deactivate calibration reminder function	Deactivate: OFF Activate: ON
	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
③	Reset 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
	Only if Yes is selected24H or 12H (AM/PM) flash	Set time format	24H/12H
	Only if Yes is selectedHour flashes	Set hour value	00 - 23 or 01 - 12
	Only if Yes is selectedMinute flashes	Set minute value	00 - 59
	Only if Yes is selectedSecond flashes	Set second value	00 - 59
⑤	°C flashes Set unit for temperature		°C/°F
	% flashes	Set unit for humidity	%, td, wb
6	Manual 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	-
i	If the power supply is interrupted the settings are being saved for at least 3 min.

6.5. Measuring

i	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 [►].
i	If the max. temperature value is shown, press [% ] to display the max. humidity value.
i	If the [Max] key is not pressed for > 5 min, the screen automatically reverts to the current display

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 >5min ,the screen automatically reverts to the current display

Histogram

① Bar
② Bar segment
③ Time interval
④ Lower display value
⑤ Displayed unit (temperature or humidity)
⑥ Upper display value

⑦ Manual 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.
  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 display per bar	Histogram total time
5 min	1 h
10 min	2 h
1 h	12 h
2 h	24 h
24 h	12 days

Displaying the values of a bar

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].

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.

7 Maintaining the product

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)
3. Instrument turns on automatically.
4. Close the battery compartment.

i

If the power supply is interrupted the settings are being saved for at least 3 min.

i

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.

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.

i

Do not clean the instrument with compressed air, otherwise the sensor may be damaged.

8 Tips and assistance

8.1. Accessories and spare parts

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

8.2. Questions and answers

Question Possible causes
Instrument displays LO	Below -20 °C
Instrument displays HI	Above +70 °C

If we could not answer your question, please contact your dealer or Testo Customer Service. For contact details see the rear side of this document or the web page www.testo.com/service-contact

testo 623

Directive CE 2004/108/CE

• 4 piles / piles rechargeables, type AA

Fixation murale