Detcon TP-624D - Manual (Page 17)

Model TP-624D
TP-624D Instruction Manual Rev. 0.4 Page 13 of 40
3. Operation
3.1 Programming Magnet Operating Instructions
The Operator Interface of the TP-624D gas sensors is accomplished via two internal magnetic switches located
above and below the LED display (Figure 11). 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 10 Magnetic Programming Tool
The magnetic programming tool (Figure 10) 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 11.
Figure 11 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.)
PGM 1
PGM 2
MODEL TP-624D
HOUSTON, TEXAS
FLT 1 2 CAL
MicroSafe H2S Gas Sensor
ALM ALM
TM
Program 1
Program 2