6 Guttman Boulevard, Charleroi Industrial Park, Charleroi Pennsylvania 15022
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6.0 COMMAND CODES
25 Unlock Monitor
Enter Command Code 25 to unlock the monitor. A prompt will be displayed requesting entry of the
User Password. The User Password is factory pre-programmed to “1”. When the User Password
is entered, the monitor will go into unlocked condition for a 15-minute period. In the unlocked
condition, instrument settings can be modified.
100 Programmable Parameters
View when locked. View and modify when unlocked.
Gas Type: Selects target gas and range.*
Decimals: Selects the number of digits represented in fractional form.*
Range: Selects range for 20 mA output signal.*
Span: Selects span calibration gas concentration.*
111 Gas Sensor Calibration
Enter Command Code 111 while the monitor is un-locked to activate the gas sensor calibration
routine. The Calibration routine is detailed on page 10.
120 Alarm Parameters
View when locked. View and modify when unlocked.
AL1-L: Alarm Level 1 low limit
AL1-H: Alarm Level 1 high limit
AL2-L: Alarm Level 2 low limit
AL2-H: Alarm Level 2 high limit
On Delay: Delay, in seconds, to onset of alarm condition
Off Delay 1: Delay, in seconds, required to reset alarm relay 1
Off Delay 2: Delay, in seconds, required to reset alarm relay 2
Alarm Type: 8-bit binary word used to define output relay alarm modes (See Page 8)
Sensor Fail Level: Sets limit of live concentration excursion beyond zero and range that defines
sensor fail
*Factory Programmed Value-User will not typically need to modify – Could render unable to detect faults with sensor
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