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El-usb-2, Led flashing modes, Humidity, temperature and dewpoint usb data logger – Martel Electronics EL-USB-2 User Manual

Page 3: Leds meaning action

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DT-EL-USB2

Martel Electronics Corporation 3

No LEDs flash

Alternating green double flash every 10 seconds

Alternating green single flash every 10 seconds

Alternating between green and red single flash every 10 seconds

Alternating between green single and red double flash every 10 seconds

Alternating between green or red triple flash every 10 seconds

Simultaneous red single flash every 60 seconds

- No logging started.

Start logging.

or
- Battery fitted but completely discharged.

Replace battery.

or
- No battery fitted.

Fit battery, start logging.

- Logger configured for delayed start.

No action needed,
logger will start at a
later date and time.

- Logger operating.

None

- Last stored Humidity and Temperature readings within set

alarm levels.

- The green LED indicates the parameter that is within set

alarm levels.

- The red LED indicates the parameter for which the Low

Alarm level has been exceeded.

- The green LED indicates the parameter that is within set

alarm levels.

- The red LED indicates the parameter for which the High

Alarm level has been exceeded.

: Logger memory is full.

Download data.

: Battery is nearly discharged.

Fit new battery and

No alarm conditions are indicated.

download data.

Once the battery is exhausted, no LEDs will flash.

Plug the data logger into the PC and run the control software
to find out which condition applies.

(if latching is enabled, then a flashing Green LED indicates that no

alarm condition has ever been logged)

(if latching is enabled, then the alarm condition may have

been triggered a while ago)

(if latching is enabled, then the alarm condition may have

been triggered a while ago)

In this condition, latching is automatically enabled, and a flashing Green
LED indicates that no alarm condition has ever been logged.

Warning

Warning

LEDs

Meaning

Action

RH T

60s

RH T

RH T

10s

10s

or

RH T

RH T

10s

10s

or

RH T

RH T

RH T

RH T

10s

10s

10s

10s

or

or

or

RH T

RH T

after 10s

RH T

10s

Repeating
sequentially

EL-USB-2

Humidity, Temperature and Dewpoint USB Data Logger

LED FLASHING MODES