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Figure 8 hart-ram software flowchart – Detcon 700 Series Remote Sensor/Alarm Relay Module With HART Interface User Manual

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700 HART-RAM I.M.

The user interface of the HART-RAM is designed to mimic that of the Model 700 Gas Sensor. However,
only the functions deemed critical for normal remote sensor operation are available. These are the 5 menu
functions that are available for the remote control of the 700 Gas Sensor:

AutoZero – used to perform AutoZero remotely
AutoSpan – used to perform AutoSpan remotely, user is required to apply span gas flow to remote gas
sensor
View Program Status – displays the complete list of sensor status and diagnostic indicators
Set AutoSpan Level – used to change the span gas concentration
Signal Output Check – used to generate simulated outputs from the sensor for system diagnostic purposes

NOTE: For any other required operational changes, the 700 Gas Sensor must be accessed
directly.

Software Flowchart

dec

dec

Yes

/No

Set Energized

PGM1/2 (S)

PGM1/2 (3)

Yes

/No

Yes

/No

inc

Set Ascending

PGM1/2 (3)

PGM1/2 (S)

Set Latching

PGM1/2 (3)

PGM1/2 (S)

Set Level - XX

Set Alarm 2

Auto Time-Out

PGM2 (S)

PGM1/2 (3)

PGM1 (S)

PGM1/2 (M)

PGM1/2 (3)

Calibration Mode

(Auto Span)

View Sensor Status

Auto Time-Out

PGM1/2 (M)
PGM1/2 (3)

inc

PGM1 (S)

PGM1/2 (3)

Set AutoSpan Level

PGM1/2 (M)

PGM1/2 (3)

PGM2 (S)

XX

AutoTime-out

PGM2 (3)

PGM1 (3)

Normal Operation

PGM2 (3)

PGM1 (3)

Calibration Mode

(Auto Zero)

PGM1 - Program Switch Location X1
PGM2 - Program Switch Location X2

Signal Output Check

Auto Time-Out

(S) - Momentary Swipe
(M) - Momentary hold of Magnet during text

scroll until arrow prompt appears, then
release

(3) - 3 second hold from arrow prompt
(10) - 10 second hold from arrow prompt

Auto Time-out - 5 seconds

inc - Increase
dec - Decrease

X, XX, XXX - numeric values

Set Energized

Auto Time-Out

Yes

/No

PGM1/2 (3)

Yes

/No

PGM1/2 (3)

PGM1/2 (S)

PGM1/2 (M)

Set Latching

PGM1/2 (S)

PGM1/2 (3)

Set Fault

LEGEND:

Simulation

PGM1/2 (3)

PGM1/2 (M)

PGM2 (10)

Set Energized

Set Latching

Set Ascending

Auto Time-Out

Set Level - XX

Auto Time-Out

PGM1 (S)

PGM1/2 (3)

inc

PGM1/2 (3)

PGM2 (S)

XX

Set Serial ID

PGM1/2 (M)

dec

Yes

/No

Yes

/No

Yes

/No

inc

PGM1/2 (3)

PGM1/2 (3)

PGM1/2 (S)

PGM1/2 (3)

PGM1/2 (3)

PGM1/2 (S)

PGM1/2 (S)

PGM1/2 (3)

PGM2 (S)
PGM1 (S)

dec

Set Alarm 1

PGM1/2 (M)

Voltage = X.XX V

Temp = XX C

mA Output = XX.XX

Sensor Diags

Serial ID

Sensor Life XXX%

Last Cal XX Days

Range XXX ppm

AutoSpan @ XX

Version X.XX

Model Type

Alarm 2 Settings

Alarm 1 Settings

Fault Settings

Figure 8 HART-RAM Software Flowchart

700 HART-RAM I.M.

Rev. 0.0

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