Siemens Water Technologies Series Manual page 12

2.1 Overview
WT.050.130.000.UA.IM.1108
ACUTEC™ 35 SYSTEM
The Series 50-130 Gas Detection System consists of modular com-
ponents that can be used in a variety of configurations to fit specific
application requirements. Following is a brief description of the
major system components. More detailed information follows later
in this manual.
• BASE UNIT: Includes a Power Supply Module housed in a NEMA 4X
enclosure. Single-Point Units accepts one Receiver Module, and Dual-
Point Units accept two Receiver Modules. All units are provided with
an audible horn.
• POWER SUPPLY MODULE: Provides power for one or two Receiver
Modules, for the audible horn, and for charging an external Battery
Back-up. The power supply accepts 85 to 255 volts, ac (50/60 Hz)
and mounts on a DIN rail.
• DETECTOR RECEIVER MODULE: Receives a signal from a one Sensor/
Transmitter, can be set for two alarm levels and provides three alarm
contacts. The Receiver Module mounts on a standard DIN rail. Re-
ceiver Modules include a Reset/Acknowledge button, provide power
for Sensor/Transmitters, and control Autotest Generators.
• MONITOR RECEIVER MODULE: Same as the Detector Module, but also
includes a digital display of gas level and a 4-20 mA output.
• SENSOR/TRANSMITTER: Consists of an electrochemical gas sensor con-
nected to a NEMA 4X transmitter, which sends a signal to a Receiver
Module.
• AUTOTEST GENERATOR: An electrochemical gas generator which
attaches to Sensor/Transmitters and automatically tests sensor
response daily.
NOTE: The Auto-Test option is for indoor use only, and should only
be used with detectors set to the standard range or lower, as shown
in Section 1.1 – Technical Data. If used with higher ranges, the gen-
erator may not produce enough gas to test the sensor.
• BATTERY BACK-UP: The Battery Back-up option for gas detection sys-
tems consists of a separate wall-mounted enclosure which houses a
battery and a control circuit board. The battery is a sealed, lead-acid
type and is rated four ampere-hours.
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