SPEROSENS LHW-I UNIT LINEAR HEAT WIRE INTERFACE
LHW-I Linear Heat Wire Interface
The Sperosens LHW-I unit is a linear heat wire interface and test unit. The unit is
compatible with most conventional fire panels which requires a series fire resistor
between 330 Ohm and 680 Ohm. Factory fitted compression glands ensure an IP65
rating when installed.
Operation of the LHW circuit is simulated by an internal test button or external
activation of the magnetic reed switch.
APPLICATIONS:
- Linear heat wire installations in harsh environments
- Easy monitoring of LHW circuits
FUNCTIONALITY:
Compatibility:
- Conventional fire alarm panels
- Suppression release panels
- Addressable zone monitor units
Typical use cases:
- Combined with Spero LHW-EOL (Linear Heat Wire End Of Line unit)
- With a custom end-of-line resistor alone (range 3.3 KOhm to 15 KOhm)
APPLICATIONS:
- Linear heat wire installations in harsh environments
- Easy monitoring of LHW circuits
ENVIRONMENTAL SPECIFICATIONS:
Environmental Conditions
- Water and Dust: IP 65 protection standard.
- Temperature: –10 °C to +50 °C
KEY FEATURES:
- P65 ingress protection
- Integral test button
- Integral magnetic reed switch
- Power and alarm indicators
- Compatible with most conventional fire panels
ELECTRICAL SPECIFICATIONS:
Supply
- 12 – 30VD
- C Current consumption:
- Normal: max. 1mA at 28VDC
- Testing: limited by series fire resistor
MECHANICAL SPECIFICATIONS:
Physical Dimensions:
170L x 110Wx 60H mm
(Incl. mounting bracket and glands)
Material:
Main Enclosure: Flame retardant high quality polycarbonate material (base and lid)
Installation Method:
Supplied with stainless steel mounting bracket