SensAlarm
Flex
–
Universal Gas Detection System
Sensidyne Document No. 360-0257-01 (Rev A)
P a g e
11 | 82
1.2. Standard Features
1.2.1. Universal Sensor Capability
The SensAlarm Flex accepts a variety of Plus Series Sensor technologies, which include electrochemical,
catalytic bead, and infrared. Sensors can be installed without having to reconfigure or modify the Gas
Monitor in any way. When a different Plus Series Sensor is installed in the Gas Monitor the unit
reconfigures the system functions to match those of the new sensor. This includes changing all alarm
and calibration settings to match those of the new sensor.
1.2.2. Large Display for Ease of Operation
The SensAlarm Flex has a large seven (7) inch LED display for gas concentration and sensor / system
notifications.
The top section is reserved to display a large one and three quarter inch (1 ¾”) gas
concentration for the highlighted sensor channel, which can be seen from several feet away. Sensor
channels one (1) and two (2) are indicated in the bottom left and right sections of the display accordingly.
A blue frame around the sensor channel indicates the selected channel for the top large concentration
display.
1.2.3. Non-Intrusive Operation
Six (6) magnetic hall effect switches bellow the display allow full configuration, calibrations and other
functions to be performed without opening the Monitor enclosure. A magnetic screwdriver is provided
with the Monitor. Access can be password protected to prevent unauthorized access or changes.
1.2.4. Transportable Calibration
Plus Series Sensors have transportable calibration capabilities. Sensors may be calibrated remotely in a
shop or at Sensidyne to be installed at the Gas Monitor without any special tools or adjustments. When a
new sensor is installed, the Gas Monitor automatically adjusts to recognize the new gas type and range
and adjusts system function accordingly.
1.2.5. Predictive Sensor Failure
Predictive Failure is a unique feature that provides the user with an early warning of the pending
expiration of a sensor. When the sensor has less than 10% of its life remaining, a warning can be
configured to appear on the main display, and can be assigned to activate other fault indicators and
output protocols.
Predictive failure is based on sensor age, power on hours, calibration gain and cumulative gas exposure.
The user can access Remaining Sensor Life (percent) at any time.
1.2.6. AC & External DC Power Compatibility
SensAlarm Flex has an internal power supply for operation from 100-240 VAC, 50/60 Hz and rated at 24
VDC, 65 watts output. 24 VDC is used to power the annunciation, so that the Gas Monitor is fully
functional on external 24 VDC or internal battery backup when optionally furnished.
The optional, internal battery backup will power the unit in the event of a line power failure. It
provides 30 minutes operation in full alarm and 60 minutes minimum when not in alarm.
1.2.7. Communication Protocols
The Gas Monitor comes standard with 4 to 20mA output, Modbus RS-485 RTU and Ethernet TCP
protocols.
Summary of Contents for SENSALARM FLEX
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