TESTO 400 - LED Status; Technical Data for IAQ Data Loggers

14 IAQ data logger
134
It is not possible to display the measuring values of an ongoing
measurement in the graphic/table. Only the current measuring values of
the probes can be viewed in the Basic view.
14.8 LED status
LED status Description
Permanently red
Insufficient power supply or no compliant USB
mains unit (PC or very old mains unit instead of
the USB mains unit).
Flashing green/red (rapidly) Measurement in progress.
Power failure or probe missing/not responding.
After a power failure, the IAQ data logger
flashes red until the end of the measurement. If
a probe is missing, it flashes for as long as it is
missing. The measurement is still saved.
Flashing green/green
(slowly)
IAQ box connected, ready to measure, no
measurement is in progress.
Flashing green/green
(rapidly)
Measurement in progress.
Flashing red Internal error.
Disconnect the mains unit from the power
supply and reconnect it after a brief waiting
period.
If the problem persists, contact Testo
Customer Service.
14.9 Technical data for IAQ data loggers
Feature Value
Probe connections
2 x thermocouple type K
4 x Testo Universal Connector (TUC) for
connecting cable probes to the corresponding
plug
Interfaces
Micro USB for connection to a mains unit
USB mains unit
Recommended power supply 5 V, 2 A, 230 V
Internal memory capacity
1.5 GB = 1 million readings
Operating temperature
-5 to 45 °C
Storage temperature
-20 to +60 °C
Dimensions
89 x 136 x 39 mm
Housing material
PC, ABS, TPE
Weight
160 g
Protection class
IP 20