ED510 - GAS DETECTOR
ED510 IM REV 2 - 23.08.2017
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GAS DETECTION
EDP SEMICONDUCTOR GAS SENSORS
The ED510 is supplied as standard for use with the EDP Semiconductor sensor. However when used with ED Transmitter
modules Electrochemical Cell and Catalytic gas sensors can be connected enabling detection of other toxic gases and flammable
only detection. Attention is drawn to the need for calibration after the ED510 has been energized for 24 hours. When supplied
alarm levels are approximately set for the target gas, if stated with the order, if not 25% and 50% LEL Butane is used. Therefore
a measure of immediate protection is obtained once correct operation is assured.
EDP Semiconductor gas sensors:
A) EDP1B is suitable for the detection of flammable gases such as
Ammonia, Butane, Propane and some toxic gases, (a list is available).
B) EDP2B suitable for the detection of flammable gases such as Methane
and some toxic gases, for more gases see list available.
C) EDP3B suitable for the detection of many Freons such as R22.
When power is first applied the green power LED should illuminate. If a semiconductor
gas sensor is fitted the low alarm and high alarm LEDs will illuminate within a few
seconds. Press the MUTE button to silence the sounders. The ED510 will be ready
to reset in a few minutes once the gas sensors have reached their correct operating
temperature and provided they are in clean air. Provided all connections are correct,
the ED510 should have its power light only illuminated. Simple wiring faults can often
be found by careful checking of connections. Particular attention should be given to
ensuring correct polarity of gas sensors and fire detectors otherwise damage may
occur.
AUDIABLE AND VISUAL ALARMS
The fault monitored sounder circuit can be used to operate several sounders and beacons up to a maximum load of 1A. A 4K7
Ohm end of line resistor should be fitted across the last device to facilitate fault monitoring.
+
-
+
-
-
-
+
-
+
-
-
-
+
-
+
-
4K7
EOL
+VE
-VE
SOUNDER
OUTPUT
NOTE
1. Never use looped wire always break wire to enable fault monitoring.
IMPORTANT NOTE:
If Sounders and Beacons not supplied by EDL are to be used, ensure they have a series polarity protection
diode fitted. If not an external diode suitably rated should be used. Please contact EDLfor further information. See diagram below.
Only fit
EDP 1B,2B,or 3B type
sensors
+
-
+
-
DIODE.
+VE
SOUNDER
OUTPUT
-VE
TERMINAL BLOCK
DIODE