Dwyer 1207A User Manual
Page 9
1207A manual
Page 9
Backlight
Press and hold
to toggle the display's backlight.
Note: use of the backlight increases the current drain on the batteries.
Tasklight
Comes on with the display's backlight... see above.
Switching
PUMP on / off
The analyzer normally operates with the pump on. Press
quickly
to switch the pump off and on.
When the pump is switched off, the analyzer displays "PUMP OFF"
approx every 30 seconds.
NOTE: the pump will not switch off if the CO reading is above
20 ppm. This helps to protect the CO sensor from damage.
NOTE: the pump cannot be switched off with the rotor set to
-----------MENU.
Zeroing the
pressure sensor
Press and hold the
key until the top line display shows ZERO
CAL.
“Freezing” the
display
Press and hold the
/
key until a second beep is heard to
freeze all readings. The display flashes and readings can be printed by
pressing
key. Press and hold the
/
key again until a
second beep is heard to go back to “live” measurements.
The
function is inhibited when the display LEDs are flashing.
Storing a set of
readings
Press and hold the
/
key for approx. 4 seconds.
Note: this STORE function is inhibited if the display LEDs are flashing.
Note: this STORE function is inhibited in normal operation if the pump is
switched off.
Changing the
display's active
line
Press and release the
/
key until the illuminated LEDs point at
the display line that you wish to change. While the LEDs are flashing
turn the rotary dial to display the parameter that you want. If the rotary
dial is not turned the active line will go back to its previous setting after
approx. 5 secs.