ENGLISH
Pag. 31
6. Testing and use
6.1 Power on
When the detector is powered on, the red LED on the motherboard starts blinking at slow
intermittence. Output current is nearly 1.5 mA.
After 1 minute, the red LED ash rate is equivalent to the detector working status (see table
on paragraph 6.3) and the output current is 4.0mA.
Once the warm-up phase is over, the detector can work correctly, although the optimal per-
formances will be achieved after two hours.
Should the detector be provided with display, please refer to the additional technical hand-
book of display board.
6.2 Testing
Detectors are factory calibrated for the specic gas required by the customers. Future adjust-
ment of the pre-set calibration can be carried out by employing the calibration keypad or
display when available.
It’s strictly forbidden open and close the equipment when it’s installed in hazardous area
and it’s powered-on. This operation can be conducted in safe zone and without power sour-
ce. After 10 minutes from power source interruption, the equipment can be opened.
It’s strictly recommended the use of personal protective equipment during operations insi-
de the enclosure.
USE ONLY DIP-SWITCHES 3-4-5-6 TO SET ALARM THRESHOLDS
VALUES IN % FULL SCALE (ABSOLUTE VALUES FOR OXYGEN)
(*) ONLY FOR OXYGEN ENRICHMENT/DEPLETION
JUMPERS PROGRAMMING FOR ALARM THRESHOLDS
CUSTOM
3 5 10
5 10 15
5 10 20
10 15 25
10 15 30
10 20 30
10 25 35
15 25 40
15 30 45
25 35 50
20 40 60
22 23 24
NOT
USED
20 19 18
19 18 17
(*)
(*)
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
ON
(*)
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
DIP SWITCH N.2 SELECTS THE
CURRENT OUTPUT MODE
“ON” POSITION: PROPORTIONAL ANALOG 4-20 mA OUTPUT CORRESPONDING TO 0-100% FULL SCALE
“OFF” POSITION: 10-20 mA CURRENT OUTPUT TO OPERATE WITH FIRE CONTROL PANELS USING A
CURRENT/VOLTAGE CONVERSION (THE OPERATIVE THRESHOLDS ARE THE 1ST AND THE 2ND)
.
WARNING!
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