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INTRODUCTION
Gas detectors are high-technology devices in which the presence of cer-
tain combustible gases triggers an alarm. We recommend to refer to
authorised technicians for their installation, for routine and special
maintenance and for disassembling after 5 years.
The detectors are designed to trigger the alarm off when gas concentra-
tion reaches a threshold between 5% and 15% of the lowest explosion
limit (L.E.I.). The operating conditions are at room temperature between
–5°C and +35°C and a maximum relative humidity of 90%.
TECHNICAL FEATURES
- Rated voltage: 230 Vac – 50 Hz
- Operating ambient temperature:
• reference = 20°C ± 5°C
• range = -5°C to +35°C
- Operating ambient relative humidity:
• reference = 65% ± 10% to 20°C ± 5°C
• range = 30% to 90%
- Alarm relay contact capacity: 8A/250Vca-cos
ϕ
1 - 5A/250Vca-cos
ϕ
0,4
- Activation threshold for model RG1-M:
• Factory setting: 5000ppM ± 1000ppM, equal to 10% of the L.E.L.
• Maximum permitted deviation under extreme temperature and humidity
conditions: 2500ppM to 7500ppM, equal to 5% and 15% of the L.E.L.
- Activation threshold for model RG1-G:
• Factory setting: 1860ppM ± 370ppM, equal to 10% of the L.E.L.
• Maximum permitted deviation under extreme temperature and humi-
dity conditions: 930ppM to 2790ppM, equal to 5% and 15% of the
L.E.I.
- Protection degree : IP42
- Alarm relay protection degree : IP67
- Front push-button to be used for :
• Alarm memory reset
• test (electric)
Standard Compliance
Gas detectors RG1-M and RG1-G comply with standards CEI UNI EN
50194 type A and CEI EN 50270 type 1.
C.443BIS 18-12-2003 12:55 Pagina 18
