Led Status; Technical Data For Iaq Data Loggers - TESTO 400 Instruction Manual

14 IAQ data logger
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
Permanently red
Flashing green/red (rapidly)
Flashing green/green
(slowly)
Flashing green/green
(rapidly)
Flashing red

14.9 Technical data for IAQ data loggers

Feature
Probe connections
Interfaces
USB mains unit
Internal memory capacity
Operating temperature
Storage temperature
Dimensions
Housing material
Weight
Protection class
134
Description
Insufficient power supply or no compliant USB
mains unit (PC or very old mains unit instead of
the USB mains unit).
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.
IAQ box connected, ready to measure, no
measurement is in progress.
Measurement in progress.
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.
Value
2 x thermocouple type K
4 x Testo Universal Connector (TUC) for
connecting cable probes to the corresponding
plug
Micro USB for connection to a mains unit
Recommended power supply 5 V, 2 A, 230 V
1.5 GB = 1 million readings
-5 to 45 °C
-20 to +60 °C
89 x 136 x 39 mm
PC, ABS, TPE
160 g
IP 20