- For LPG gas
- with Double Relays
- Made in Italy
GENERAL DESCRIPTION
- The GAMMA 653 are gas detector of Methane and LPG gas, that warns with an optical and acoustic signal, the presence of gas in the environment.
- They are planed to be functioning as detected gas with double relay exit.
- The detectors are calibrated to detect gas up to 10% of the L.E.L. (Low Explosion Limit), this threshold can change in base of the environmental conditions but it will not gets over during the first 4 years working, the 15% LEL, after that period the instrument have to be put out of order or re-send to GECA SRL for a complete substitution of the device.
- With that aim, the package is provided with a printed label on which have to be indicated the maturity of correct working period (4 years from installing date); this printed label have to be compiled by who makes the installation.
LUMINOUS AND ACOUSTIC SIGNALISATIONS
The gas detector is provided, on the front panel, by three luminous signalisations:
GREEN LED (ON): indicates that the instruments is powered
YELLOW LED (FAULT): Indicates that the gas sensor is damaged.
RED LED (ALARM): Indicates that the gas concentration measured in the air exceeds the alarm threshold.
In case of damage, the gas detector is able to signals the malfunction, illuminating in fixed way the yellow led and activating a sound alarm with two seconds' of intermittence.
In case of alarm the detector illuminating the red led and after 20 seconds the buzzer emits a sound alarm and both relays activates.
LIGHTING DELAYS
The catalytic sensor presents in the GAMMA 653 gas detector, needs to be heated for about one minute to working in a correct way and for that reason when the detector is lighted on the green led will lighten to indicated that the sensor is in the heating phase. During this time, all the detection functions will be inhibited.
INSTALLATION
Attention: the installation and the out of service of the instrument must be done by skilled personnel only.
The installation of gas and the possible stopping device must be in according to the national and in force prescriptions law.
