Detcon DM-700 - Manual (Page 17)

Model DM-700
DM-700 Instruction Manual Rev. 4.0 Page 13 of 48
3. Operation
3.1 Programming Magnet Operating Instructions
The Operator Interface of the Model 700 Series gas sensors is accomplished via two internal magnetic
switches located to either side of the LED display (see Figure 12). The two switches, labeled “PGM1” and
“PGM2”, allow for complete calibration and configuration, thereby eliminating the need for area de-
classification or the use of hot permits.
Figure 11 Magnetic Programming Tool
The magnetic programming tool (Figure 11 Magnetic Programming Tool) is used to operate the magnetic
switches. Switch action is defined as momentary contact, 3-second hold, and 10-second hold. (Hold times are
defined as the time from the point when the arrow-prompt “
“appears.) For momentary contact use, the
programming magnet is briefly held over a switch location. For 3-second hold, the programming magnet is
held in place over the switch location for three seconds. For 10-second hold, the programming magnet is held
in place over the switch location for 10 seconds. The 3 and 10 second holds are generally used to enter
calibration/program menus and save new data. The momentary contact is generally used to move between
menu items and to modify set-point values. Arrows (“
” and “”) are used on the LED display to indicate
when the magnetic switches are activated. The location of “PGM1” and “PGM2” are shown in Figure 12.
MODEL
DM-700
detcon inc.
H 2 S Sensor
detcon inc.
Program Switch #1
Program Switch #2
LED Display
Figure 12 Magnetic Programming Switches
NOTE: While in the Program Mode, if there is no magnetic switch interaction after 4
consecutive menu scrolls, the sensor will automatically revert to normal operating condition.
While changing values inside menu items, if there is no magnet activity after 3-4 seconds
the sensor will revert to the menu scroll.
(Exception to this is with “Signal Output Check” mode.)