ENGLISH
Pag. 31
6. Testing and use
6.1 Power on
When the detector is powered on, the red LED on the base board starts blinking at slow in-
termittence. Output current is approximately 1.5 mA.
After one minute, the red LED flash rate is equivalent to the detector working status (see
table in paragraph 6.3) and the output current is 4.0 mA.
Once the warm-up phase is over, the detector can function correctly, although the optimal
performances will be achieved after two hours.
If the detector is provided with display, please refer to the additional technical handbook of
display board.
6.2 Testing
The detector is factory calibrated for the specific gas required by the customers. Future
adjustment of the pre-set calibration can be carried out by employing the calibration keypad
or display where it is provided.
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 (PPE) during operations
inside 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!
Summary of Contents for SMART3G-GrI
Page 43: ...ENGLISH Pag 39...
