Dwyer 1207A - Manual (Page 3)

1207A manual Page 3
DWYER 1207A
User Guide
The DWYER 1207A Combustion Analyzer measures O
2,
differential
temperature, differential pressure and CO.
It calculates efficiency (Nett, Gross or Condensing), losses, the CO/CO
2
ratio,
Poison Index, excess air and CO air free in ppm only.
The analyzer can be upgraded with the addition of a Nitric Oxide sensor either
on initial purchase or as a retrofit as part of an annual service procedure.
In addition the DWYER 1207A Combustion Analyzer’s CO sensor checks
carbon monoxide levels in ambient air - useful when a CO Alarm is triggered
and tests the safety of appliances.
The CO and NO readings can be referenced to the oxygen reading in ppm or
mg/m
3 .
It has a protective rubber sleeve with a magnet for “hands–free” operation and
their flue probes work on all combustion appliances and take ambient air
measurements.
The large display shows 4 readings at a time and all data can be printed via an
optional infrared printer. The printed data can be 'live' data, 'frozen' data or
'stored' data. 255 sets of tests can be stored. Note: stored data is lost if the
batteries are removed or are exhausted. Two lines of 16 characters can be added
to the header of printouts.
The analyzer is controlled using 4 buttons and a rotary dial.
The four buttons (from left to right) switch on and off the analyzer, print actual
or frozen data/ switch on and off the backlight, switch on and off the pump and
“freeze”/ hold data. The buttons with
, and arrows also change
settings such as date, time, fuel source, etc. when in MENU mode.
The rotary dial changes the LED indicated display line and selects access to the
menu to make changes to the date, time, fuel, etc.