Detcon FP-624C User Manual download pdf (Page 16)

a) First, enter the programming menu by holding the programming magnet stationary over “PGM 2” for 30 sec-

onds until the display reads “VIEW PROG STATUS”, then withdraw the magnet. At this point you can

scroll through the programming menu by momentarily waving the programming magnet over “PGM 1” or

“PGM 2”. The menu options are: View Program Status, Set Alarm 1 Level, and Set Alarm 2 Level, Set Gas

Factor (target gas), Set Cal Factor (calibration gas).

b) Next, scroll to the “VIEW PROG STATUS” listing and then hold the programming magnet over “PGM 1”

for 3 seconds. The menu will then automatically scroll, at five second intervals, through the following informa-

tion before returning back to the “VIEW PROG STATUS” listing. Note that the “K factor” for the target gas

is displayed in item #12 and the “K factor” for the calibration gas is displayed in item #13. Compare the K fac-

tors to the listing in Table 1 to determine the target/calibration gas configuration.

1 -

The gas type, range of detection and software version number. The menu item appears as:

“LEL 0-100 V6.0”

2 - The alarm set point level of alarm 1. The menu item appears as: “ALM1 SET @ 20%”

3 - The alarm firing direction of alarm 1. The menu item appears as: “ALM1 ASCENDING”

4 - The alarm relay latch mode of alarm 1. The menu item appears as: “ALM1 NONLATCHING”

5 - The alarm relay energize state of alarm 1. The menu item appears as: “ALM1 DE-ENERGIZED”

6 - The alarm set point level of alarm 2. The menu item appears as: “ALM2 SET @ 40%”

7 - The alarm firing direction of alarm 2. The menu item appears as: “ALM2 ASCENDING”

8 - The alarm relay latch mode of alarm 2. The menu item appears as: “ALM2 LATCHING”

9 - The alarm relay energize state of alarm 2. The menu item appears as: “ALM2 DE-ENERGIZED”

10 - The alarm relay latch mode of the fault alarm. The menu item appears as: “FLT NONLATCHING”

11 - The alarm relay energize state of the fault alarm. The menu item appears as: “FLT ENERGIZED”

12 - The target gas K factor. The menu item appears as: “GAS FACTOR #.##”

13 - The calibration gas K factor. The menu item appears as: “CAL FACTOR #.##”

14 - The calibration gas level setting. The menu item appears as: “CalLevel @ xx%”

15 - Identification of the RS-485 ID number setting. The menu item appears as: “485 ID SET @ 1”

16 - The estimated remaining sensor life. The menu item appears as: “SENSOR LIFE 100%”

c) Exit back to normal operations by holding the programming magnet over “PGM 2” for 3 seconds, or automati-

cally return to normal operation in 30 seconds.

3.7.2 Changing the Target Gas

To change the target gas setting, select the applicable K factor from Table 1 and follow the instructions below.

a) First, enter the programming menu by holding the programming magnet stationary over “PGM 2” for 30 sec-

onds until the display reads “VIEW PROG STATUS”, then withdraw the magnet.

b) Next, scroll to the “SET GAS FACTOR” listing and then hold the programming magnet over “PGM 1” for

3 seconds. The menu item appears as “GAS FACTOR #.##”. Use the programming magnet to make an

adjustment to “PGM 1” to increase or “PGM 2” to decrease the display reading until the reading is equal to the

desired K factor. Save value by holding the programming magnet over “PGM1” for 3 seconds.

c) Exit back to normal operations by holding the programming magnet over “PGM 2” for 3 seconds, or automati-

cally return to normal operation in 30 seconds.

3.7.3 Changing the Calibration Gas

Optimum calibration of the FP-624C sensor requires that the calibration gas be the same as the target gas. However, if

the applicable calibration gas is not available, any other gas listed in Table 1 can be used to calibrate the sensor. Note

that the K factors are theoretical and calibration with a gas other than the target gas may be subject to error. A calibra-

tion gas of 50% LEL in air is required. To change the calibration gas setting, select the applicable K factor from Table 1

and follow the instructions below.

Model FP-624C Combustible Gas Sensor PG.16

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