ATI’s Series B14 Gas Alarm Module Receivers are compact electronic modules that provide local alarm, display, and signal retransmission functions for gas detection systems.
The modules are designed to accept input from either two, three, or four wire 4-20 mA transmitters located up to 10,000 feet from the receiver. They’re ideally suited for use with ATI’s Series A12 or B12 two-wire toxic gas transmitters, or Model A12-17 or B12-17 three-wire combustible gas transmitter.
B14 Alarm Receivers are DIN rail mounted modules that can be supplied in single or multiple unit enclosures. Gas concentrations are indicated directly in PPM, PPB, percent, or percent LEL with the display range selectable by the user.
Each module provides separate caution, warning, and alarm setpoints with LED bar indicators of each alarm point. LED indicators flash on initial alarm condition and change to steady on when the alarm is indicated. Modules contain individual alarm relays for each alarm setpoint. However, each relay can be assigned to any setpoint to allow multiple alarm functions at a single alarm point. Relays are configurable for either standard or fail-safe operation and for either latching or non-latching operation. A fourth LED alarm bar and relay are provided to indicate trouble conditions. The trouble alarm and relay will activate on loss of input signal or if the 4-20 mA input drops below a specific value.
FUNCTIONS.
ATI’s Model B14 Alarm Receivers are DIN rail mounted modules
that can be supplied in single or multiple unit enclosures. Each
alarm module offers a variety of functions:
LED Display: Gas concentrations are indicated directly in PPM,
PPB, percent, or percent LEL with the display range selectable
by the user.
Three Alarm Setpoints: Each module provides separate
caution, warning, and alarm setpoints with LED bar indicators of
each alarm point. LED indicators flash on initial alarm condition
and change to steady on when the alarm is indicated.
Three Relay Outputs: Modules contain individual alarm relays for
each alarm setpoint. However, each relay can be assigned to any
setpoint to allow multiple alarm functions at a single alarm point.
Relays are configurable for either standard or fail-safe operation and
for either latching or non-latching operation.
.Separate Trouble Alarm: A fourth LED alarm bar and relay are
provided to indicate trouble conditions. The trouble alarm and
relay will activate on loss of input signal or if the 4-20 mA input
drops below a specific value.
Remote reset Input: Isolated input contacts are provided to
allow an unpowered switch input for acknowledgment of alarm
conditions from a remote location or via telemetry equipment.
Internal Transmitter Power: Modules provide a 24 VDC power
supply to operate either 2 or 3 wire transmitters.
Signal Retransmission: A 4-20 mA output is provided from each
module, optically isolated from the input signal to avoid ground
fault problems.
DC Powered: B14 modules are powered from a 12 VDC power
supply available as an option. Up to 3 modules can be powered
from one power supply (or 2 if battery backup is used). Customers
provided 12-28 VDC supplies may also be used.
SYSTEM ENCLOSURES.
A variety of NEMA 4X enclosures are available to assemble detection systems from receivers and power supplies. ATI offers
standard enclosures to house up to 12 modules, and can supply larger enclosures for systems requiring more points of detection.
System integrators can use standard 35 mm DIN rail for mounting modules in their own enclosures.
Single Module Enclosure
Houses a single receiver module
for use in DC powered applications
where the user supplies the DC
power to the system.
Two Module Enclosure
Houses two receivers or one receiver and
one power supply. Normally used for single
point AC powered detectors.
Three Module Enclosure
Accommodates two receivers and power
supply or three receivers. Used mainly for
two point detection systems.
Six Module Enclosure
Suitable for two power supplies
and four receivers or six receivers.
This enclosure is used primarily for
four point gas detection systems.
Nine Module Enclosure
Twelve Module Enclosure
B14 Series SPECIFICATIONS
Concentration Display 4 Digit LED, Programmable Range
Input 2, 3 or 4-wire 4-20 mA Transmitter
Output Isolated 4-20mA, 1000 ohms max load
Power 12-28 VDC, 400 mA max
Concentration Alarms
Three adjustable concentration alarms.
Setpoints adjustable from 5-100% of span.
Alarm Indicators LED bars for Caution, Warning, & Alarm
Indicator Function
Caution and Warning indicator non-latching.
Alarm indicator latching.
Alarm Relays
3 assignable relays, 7 A, 120 VAC (4 A, 220 VAC) resistive.
Alarms assignable to any one of 3 programmable setpoints.
Relay Function
Configurable for Normal/Fail-safe, Latching/Non-latching,
2/second/10 second delay, or external horn function.
Trouble Function
Front panel LED bar indicator and SPDT, 7 A relay.
Factory set for fail-safe operation.
Alarm & Relay Reset
Activated from front panel switch or through remote
reset switch.
External Reset Input terminals provided for unpowered contact input.
Gas Indicator LED bar on front panel with gas symbol overlay.
Electrical Connections Quick disconnect pluggable terminal blocks.
Module Enclosure Noryl
Module Mounting Mounts to 35 x 7.5 mm DIN rail.
Size 2.8” W x 3.6” L 2.3” D (70 mm x 90 mm x 58 mm)
Operating Temp. -40°C to + 55°C
Humidity 0-99% RH, non-condensing.
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