Emerson IM-106-5500 Manual Do Utilizador

IM-106-5500, Original Issue
August 2005

4-7

CCO 5500

Figure 4-3. Diagnostic Mode 

Tree

Detector levels from the detector are displayed here. D1 is the reference level 
and should always be less than D2. The level of D2 should be between 
10,000 and 20,000. 

E2 and E1 are the detector levels with the gas 
cell within the transmitter unit in the sight path, 
and will be of the order of 1/2 of the D2 and D1 
levels. Smoothed detector values may also be 
displayed, these are noted as d1, d2, e1 and e2. 

The first of these two parameters (Sat.#) indicates whether the detector 
signals are saturating within the micro-processor (this value should always be 
zero). If a number other than zero is displayed, it indicates saturation and the 
detector gain should be adjusted. Refer to Section 3, Detector Levels.

Phase a is the phase time correction applied for 
the calculation of the detector levels. This will 
be between 0.1 and 5.9 milliseconds. This 
value is calculated by the instrument and may 
not be adjusted. 

Enter

Press Enter on Exit option

Detector levels
D1, D2, E1, E2,
d1, d2, e1 & e2
Saturation count &
phase correction

Modulation frequency
of detector D1
Modulation frequency
of detector D2

Parameter Y values
Instantaneous gas
calculation (ppm)

Cal values
Rx temperature

Fault status

Phase a = 3.5msec