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Sigrist FireGuard 2


The most genius smoke detector: simple – safe – reliable

The Sigrist 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.

Ingenious design

The sensor uses the available natural air stream in the tunnel. It is very compact and has neither moving parts nor wear parts nor does it need consumables.
As a light source, an economical LED is used:
  • No risk of failure due to wear.
  • Guaranteed operational reliability for years.
  • Extremely low operating costs.

Rapid, reliable reaction without false alarms


The sensor detects emerging fires already at their early stages (cold smoke) and thus reacts faster than a fire alarm cable. Any influence caused by fog will be eliminated by optional heating elements. The measurement is not affected by extraneous light, reflexes or other influences as is the case for video detection. Individual setting of parameters allows an optimal object and location related setting of alarms:
  •  More time for self-rescue.
  •  No false alarms.
  •  Reduction of a possible damage to the object and of subsequent costs.

Flexible mounting – Simple system integration


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 as are various connection boxes:
  •  Installation is simple and not dependent on the tunnel profile.
  •  Fast, flexible system integration.

Minimum maintenance and upkeep

Maintenance is limited to occasional cleaning and the automatic adjustment with a checking rod. Soiling monitoring provides information on the state of the instrument:
  •  Maintenance is only necessary when required, from experience only about every 5 years.
  •  No special tools required.
The time required per instrument is normally between 15 and 25 minutes at the most.

Specifications

Sensor:

 

Measuring principle:

120° Scattered light

Wave length:

670 nm

Nominal range:

0 .. 3 E/m

Resolution:

0.001 E/m

Temperature sensor:

−30 °C .. +55 °C

Response time:

5s (at wind speed of 1.5m/s)

Installation:

Wall mounting, under-ceiling

 

mounting, intermediate ceiling

 

mounting, mounting in

 

ventilation damper

Material flow cell:

PC / ABS

Material housing:

Stainless steel 316Ti

Ambient temperature:

–30 °C .. +55 °C

Ambient humidity:

0 .. 100% rel. humidity

Protection:

IP66 (only electronic part)

Operating voltage:

24 VDC

Power input:

4 W (without heater)

 

13 W (heater, optional)

Weight:

0.9 kg

Dimensions:

approx. Ø 107 × 283 mm

Interface (optional):

Module WLAN

 

IEEE 802.11b/g/n

 

access point with Web server

Connection box SIPORT 2:

 

Power supply:

85 .. 264 VAC; 47 .. 63 Hz

Power input max.:

25 W

Protection class:

IP66

Material:

Polyester, fibre glass reinforced

Weight:

1.3 kg

Dimensions:

approx. 220 × 120 × 95 mm

Modules for SIPORT 2:

 

Module Profibus DP:

Interface Profibus DP

Module Modbus RTU:

Interface Modbus RTU

Module PowerRel:

2 × 0/4 .. 20 mA, max. 500 Ω,

 

galvanic separated.

 

2 × Semiconductor relays

 

max. 30 V, max. 0.12A,

 

Ron max. 25 Ω

Hand-held control unit SICON-C:

 

Power supply

24 VDC

Display:

Graphic TFT with touch operation

Weight:

0.6 kg

Dimensions:

130 × 160 × 60 mm

Protection class:

IP65


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