Analogue
|
COMPARISON
CHART
|
Patol Analogue LHDC | Patol Digital LHDC | Other Analogue |
Line Thermo Couple |
Pressure Tube |
|---|---|---|---|---|---|
| Adjustable Alarm Level |  |
 |
|
|
|
| Adjustable Pre-Alarm | |
|
|
|
|
| Resetable | |
|
|
|
|
| O/C fault monitored | |
|
|
|
N/A |
| S/C fault monitored | |
ALARM | |
|
N/A |
| Steel conductor | |
|
|
|
N/A |
| Integral braid/screen | |
|
|
|
N/A |
| Easily installed | |
|
|
|
|
| Easily jointed | |
|
|
|
|
| Loop powered interfaces | |
|
|
|
|
LHDC
Digital
LHDC
Application
Information
Installation
Fixings
| The term LINEAR HEAT DETECTOR
can be applied to various mechanisms that operate on different principles
and have quite different operational characteristics and functional
parameters, as shown by the above chart. There are two
principal types - ANALOGUE
and DIGITAL. PATOL produces both ANALOGUE and DIGITAL electical LHD cable types. Analogue LHDC has the advantage of adjustable alarm levels, resetability and short circuit fault discrimination. Digital LHDC has a fixed trigger level and is "one shot" in operation, however its simple nature does not require a dedicated controller. |
Infra-Red Monitors
