Teledyne 465M instruction manual SETUP-VARS Menu, Meaning Default Value, Range

7.2.5.SETUP-VARS Menu

The VARS menu allows viewing and editing of various global setup variables that effect how the M465M operates. These variables are stored in the instrument’s non-volatile memory. Table 7-6lists these variables and their function.

	Table 7-6: VARS List
VAR	Meaning	Default
		Value
	Controls the latching behavior of
ALARM MODE	the concentration alarms. See	LATCHING
	Section 7.1.3 for additional
	details.
ALARM DELAY	Number of readings above alarm	5
	limit required to trigger alarms
	Boxcar filter length for
	concentration filter. Higher
BC FILT SIZE	values will smooth out the	30
	concentration readings but will
	also increase the response time.
FLOW SWITCH	Enables/disables operation of	OFF
ENABLE	optional flow switch
COMM ADDRESS	MODBUS address for COM	1
	ports.
UNIT	Concentration unit-of-measure	PPM
	setting.
	Adjustment for display scroll
SCROLL DELAY	delay. Higher values result in	20
	slower scrolling speed.
AZERO ENABLE	Enables/Disables auto-zero	ON
	calibration
AZERO INTERVAL	Time interval for performing the	6
	auto-zero calibration (minutes)
	Molecular weight of carrier gas
	(ie. feed gas for ozone
GAS CARRIER	generator.) This value is only
	used for the calculation of wt%	32
WEIGHT
	concentration units. It is not
	used for PPM or g/Nm3
	calculations.
ANALOG RANGE	Full-scale concentration range.	5000
	Used to scale the analog output.

Range

LATCHING,

NON-

LATCHING

1 - 20

1 - 30

ON, OFF

1 - 247

PPM, WT%,

g/Nm3

6 - 100

ON/OFF

3 - 1440

20.0 – 40.0

5 – 50 g/Nm3

1000 – 9999 PPM

0.5 – 5.0 wt%

P/N 06160D DCN6409 Teledyne API Model 465M O3 Monitor Instruction Manual - Page 40