Patol LDM-621-DDL Digital Linear Heat Controller with 2km Distance Locator
£644.14
Summary
The LDM-621-DDL is a digital interface with a distance display, designed to monitor a length of Non-Resettable Digital Linear Heat Detection Cable (LHDC) for both fire conditions and fault status (open circuit). It features a 3½ digit LCD that activates on fire condition, displaying the distance into the zone where the alarm has occurred. The unit is capable of being configured to operate in a two-wire mode that emulates the operation of conventional heat detectors, allowing direct interfacing with fire control panels via fire zone trigger circuits or addressable interfaces. The LDM-621-DDL supports applications in various environments such as cable tunnels, ducts, mezzanines, and petro-chemical storage areas.
Features
- Display of alarm location: distance in metres
- Fault monitoring of LHDC for open circuit conditions
- LED indication of fire, fault, and supply status
- Test & reset functions
- Operable from two wire fire panel conventional circuits
- Analogue address loop interface – loop powered configurable
- 4 to 20 mA instrumentation current loop output
- LHDC hazardous area use by means of intrinsically safe barriers
- SIL 2 certified
- Volt free contact outputs for fire & fault conditions
Specifications
- Dimensions (WHD): 105mm x 89mm x 58mm
- Display: 3½ Digit LCD 0 – 1999m
- Character Height: 8.5mm
- Unit Accuracy: +/- 1% (+/- 1 digit)
- LHDC Tolerance: +/- 3%
- Voltage: 14 – 30Vdc (2 wire mode), 20 – 30Vdc (relay mode)
- Current Normal: < 2mA (2 wire mode), < 12mA (with Fault relay)
- Current Fire: < 14mA (2 wire mode), < 29mA (with both relays)
- Current Fault: < 700µA
- Relay Contact: 1A @ 24Vdc / 120Vac
Additional information
| Type | |
|---|---|
| Version | Standard, Use with Galvanic Isolator, Use with Zenner Barrier |
