Delta OHM HD45 17A, Manual

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The logging interval can be set to 1 minute or 30 seconds. For the interval change
mode, see section “CONFIGURATION”.
4.5 Indicating a fault
All models have an error signal mode.
Models with display indicate an error condition by displaying an “E” on a black
background, alternated to the error code, on bottom left of screen.
Fig. 4.D: Error condition signal
Several errors are indicated in a sequence, alternated by the symbol “ E ”:
Tab. 4.H: Error codes
ERROR
CODE
DESCRIPTION
1 Humidity module not present or faulty
2 Error in humidity module calibration data
3 Humidity module calibration data not present
4 Error in configuration and/or calibration data
5 Program memory altered
6 Error in temperature calibration
7 Temperature measure out of range
8 Humidity measure out of range
9 CO
2
measure out of range
In models without display, when an error occurs, the “POWER” LED flashes a number
of times equal to the error number, spaced by a sequence of quick flashes. Several
errors are indicated in a sequence, spaced by quick flashes.
In HD46…R models, when an error occurs in measuring a quantity, the respective
LED flashes.
In HD45…V…, HD45…A…, HD46…V and HD46…A models, the analog output is set
to 11Vdc or 22mA if there is a measuring error (for example, in case of sensor fault).