5.4 Set-Up
The sensor module set-points menu is used to initially set-up the alarm set points, relay actions, gas type and range, 4-20
mA action or RS-485/Sentry address and baud rates, Digital Input and Warm-up time. Use the [▲] or [▼] keys to select
following menus and press [E] to select.
• Alarms – Use the [▲] or [▼] keys to select Low Alarm (Warning) or High Alarm (Alarm) menu. Key [▲] will adjust the
setpoint upwards and Key [▼] will adjust the value downwards. Once it reaches the desired setpoint, Key [E] will accept
it and ACK will appear.
Set-points can be configured using this menu up to the following values:
Factory Alarm Set Points
Model Warning Alarm
5100-03-IT 19.5% 16.5%
5100-04-IT 50 PPM 100 PPM
5100-05-IT 10 PPM 20 PPM
5100-06-IT 2.0 PPM 5.0 PPM
5100-08-IT 0.3 PPM 1.0 PPM
5100-10-IT 10 PPM 20 PPM
5100-12-IT 2 PPM 4 PPM
5100-25-IT 25 PPM 50 PPM
5100-26-IT 2.0 PPM 5.0 PPM
5100-88-IT 1000 PPM 2500 PPM
NOTE:To enable rising O2 Alarm set warning setpoint higher than 20.9%
• Relays – Use the [▲] or [▼] keys to select High Alarm (Alarm) or Low Alarm (Warning) relay menu and press [E]. Use
the [▲] or [▼] keys to select the correct alarm relay action for the application, Latch, Sentry or Non-Latch. Selecting
“Sentry” enables the Sentry controller to make all alarm action decisions. * indicates the current selection.
• Range – Use the [▲] or [▼] keys to select Range menu and press [E]. When “Range” is selected menu provides any
choices of ranges available for the gas type selected. Use the [▲] or [▼] keys to select the desired range. If the “User”
range is selected, use the [▲] or [▼] keys to adjust the high end of the range desired.
Factory Range Set-up
Model Range Other Available
5100-03-IT 5-25% 0-25%
5100-04-IT 0-500 PPM Variable
5100-05-IT 0-100 PPM Variable
5100-06-IT 0-10 PPM None
5100-08-IT 0-3 PPM None
5100-10-IT 0-100 PPM Variable
5100-12-IT 0-20 PPM None
5100-25-IT 0-100 PPM Variable
5100-26-IT 0-10 PPM None
5100-88-IT 0-5000 PPM Variable
SMC 5100-XX-IT Toxic Gas Detector Module 27
US 5 Operation
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