DP991
Apollo Discovery optical detector (58000-600)
- 5 Approved response modes for ease of optimisation to different environments
- Rejection of transient signals
- Drift compensation to ensure constant sensitivity
- 360° Alarm visibility
- Flashing LED option
Related products
At a glance
General
The DP991 is an elegant, slim-line, optical sensor with high performance analogue addressable features. Compensation for sensor drift is included as part of the internal signal-processing algorithm.
Optical smoke monitor
The optical smoke detectors has an internal pulsing LED and a photo-diode at an obtuse angle. In clear air conditions the photo-diode in the monitor receives no light from the LED and produces a corresponding analogue signal. This signal increases when smoke enters the chamber and light is scattered onto the photodiode. The signal is processed by the electronic circuitry and transmitted to the control equipment in exactly the same way as in the case of the ionisation smoke monitor.
Drift compensation
The drift compensation algorithm will compensate for changes in sensor output caused, for example, by dust in the chamber, and will therefore hold the sensitivity at a constant level even with severe chamber contamination. This increased stability is achieved without significantly affecting the detector’s sensitivity to fire.
Compensation values are stored in nonvolatile memory and will be retained even if detectors are disconnected.
Compensation values are stored in nonvolatile memory and will be retained even if detectors are disconnected.
Unique addressing
A unique, patented addressing method provides simple, user-friendly and accurate identification of monitor location whereby a coded card, inserted in the base, is read by any monitor as it is plugged in. All the electronic components are in the monitor, but the location information is held in the base. Addressing errors during maintenance and service are eliminated. Precoded and pre-numbered address cards are also available. These address cards simplify and speed up installation and commissioning.
Details
- 5 Approved response modes for ease of optimisation to different environments
- Rejection of transient signals
- Drift compensation to ensure constant sensitivity
- 360° Alarm visibility
- Flashing LED option
- Fast alarm reporting
- EN54 approved and CPR certified
Technical specifications
| General | ||
|---|---|---|
| Status indication |
2 clear LEDs (red in alarm)
|
|
| Compatibility |
Addressable panels with 900 series (Apollo) support
|
|
| Alarm levels |
5
|
|
| Connectivity |
2-wire loop
|
|
| Addressing method |
Card Addressing
|
|
| Electrical | ||
|---|---|---|
| Power supply type |
Loop powered
|
|
| Operating voltage |
17 to 28 VDC
|
|
| Communication voltage |
5 to 9 V (peak to peak)
|
|
| Current consumption |
300 µA (quiescent)
3.5 mA (alarm)
|
|
| Detection | ||
|---|---|---|
| Detection principle |
Optical light scatter
|
|
| Monitoring |
Alarm threshold
Contamination level
|
|
| Air velocity |
No effect
|
|
| Output | ||
|---|---|---|
| Output quantity |
1
|
|
| Output type and rating |
Remote LED output (<5 mA)
|
|
| Programmable |
Yes
|
|
| Physical | ||
|---|---|---|
| Physical dimensions |
100 x 42 mm (Ø x H)
|
|
| Net weight |
105 g
|
|
| Colour |
White
|
|
| Mounting type |
Base mount
|
|
| Material (body) |
Polycarbonate
|
|
| Environmental | ||
|---|---|---|
| Vandal proof |
No
|
|
| Operating temperature |
-20 to +60°C
|
|
| Storage temperature |
-40 to +70°C
|
|
| Relative humidity |
0 to 95% noncondensing
|
|
| Environment |
Indoor
|
|
| IP rating |
IP44
|
|
| Regulatory | ||
|---|---|---|
| Compliancy |
CE
REACH
RoHS 3
WEEE
|
|
| Certification |
CPR
|
|
| Standards |
EN54:7
|
|
Downloads
All downloadsDatasheet
Certificates
CPD / CPR
Other EU certificate
Other EU certificate
Other EU certificate
VMC_PR-2045/064_2X-A Apollo Protocol
Other EU certificate
VMC_PR-2046/064_ZP2-A series
Other EU certificate
VMC_PR-1724/064_ZP2
Other EU certificate
VMC_PR-1720/064_2X
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