Teledyne T201 Manuel D’Utilisation

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07271B DCN6646 
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5.0 ALARMS 
AND 
CAUTIONS 
Please refer to the T200 Operation Manual for a functional block diagram 
of the analyzer. 
5.1  A
LARM
 
During initial warm up the internal Zero/Span factory option may exhibit a 
“Block Temperature” warning. This can be cleared once the block 
temperature stabilizes at 50 degrees Celsius. The block temperature is the 
actual temperature of the IZS block manifold inside the M501 NH
3
 
converter. If the block temperature warning exhibits a negative number such 
as (-37), then the umbilical cord is probably not attached or the Thermistor 
has become disconnected. 
5.2  C
AUTION
 
Be aware that the
 
ammonia converter operates at 825 degrees Celsius. Do 
not flow highly flammable gases through the T201 analyzer. When the 
analyzer is not in use, it is advisable to turn off the M501 NH
3
. If the 
converter hasn’t been powered for an extended period of time it is 
recommend that the analyzer be operated overnight prior to use. 
Before spanning the analyzer it is good practice to observe the NORM 
PMT signal. Its value should be equal to twice the concentration of the 
delivered span gas. A common error made during calibration is to span the 
analyzer with either too low a gas concentration or an incorrect value 
entered into the CONC menu for TNx and NOx. Commonly this will 
cause a slope value much greater than one.  
Note 
As a basic rule, always zero first, then span.