Technical Description – Sigrist FireGuard
The FireGuard detects emerging fires already at their early stages (cold smoke). The sensor uses the available natural air stream in the tunnel. Any influence caused by fog will be eliminated by optional heating elements. The sensor is very compact and has neither movable parts nor wear parts nor does it need consumables. As a light source, an economical LED is used.
An adjustable bracket allows mounting at the wall, in the arched section or at the ceiling. Special models for installation in the intermediate ceiling or directly in the ventilation dampers are available. Various ways of connections allow a flexible system integration. Individual setting of parameters allows an optimal object and location related setting of alarms, there are no false alarms.
Maintenance is limited to occasional cleaning and the automatic adjustment with a control rod. Soiling monitoring provides information on the state of the instrument. Maintenance is only necessary when required, from experience only about every 5 years, and the time required per instrument is normally between 15 and 25 minutes at the most.
A Closer Look
- Rapid, reliable smoke detection without false alarms
- Fog elimination by optional heating elements
- Compact design, no movable parts
The Specs at a Glance
|Measuring principle||120° Scattered light|
|Nominal range||0 .. 3 E/m|
|Temperature sensor||-30 °C .. + 55° C|
|Reaction time||5 s @ wind speed 1.5 m/s|
|Installation||Wall mounting, under-ceiling mounting, intermediate ceiling mounting, mounting in ventilation damper|
|Enclosure||Stainless steel 1.4571|
|Protection index||IP66 (only for electronic part)|
|Flow cell material||PC / ABS|
|Ambient temperature||-30 °C .. +55 °C|
|Humidity||0 .. 100% rel. Humidity|
|Supply voltage||24 VDC|
|Power input||4 W (without heater) 13 W (heater, optional)|
|Dimensions||ca. Ø107 x 283 mm|
|Interfaces||Optional: WLAN module; IEEE 802.11 b/g/n access point with web server|
|Connection box SIPORT 2:||Power supply: 85 .. 264 VAC; 47 .. 63 Hz
|Modules for SIPORT 2:||Interface Module Profibus DP
Interface Module Modbus RTU
Interface Module PowerRel:
Sigrist Communication Software
Vx29 is the current software controlling communication between the analyser and the SICON.
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The control unit SICON uses state-of-the-art touch screen technology with colour display. It allows simple operation using logical menu guidance. The user can select how results are displayed, either as plain values, graphs or historical data, including the indication of system and alarm status.
The control unit SICON offers all possibilities of full system integration using various interface options. A SD card is standard and can be used for data logging with almost unlimited storage capacity.
The SICON is available as a control unit for a single instrument, or the SICON M Control Unit which allows simple operation of several instruments up to a maximum of 8 measuring channels.
Sigrist SIPORT 2
The SIPORT 2 offers a low-cost connection a signal interface between the VisGuard and your monitoring system.
The SIPORT 2 can be configured to provide:
- Module StromRel: 2 x 4-20 mA and 3 x semiconductor relays
- Module Profibus DP interface
- Module Modbus RTU interface with repeater
A Closer Look