Gas detection sensors for the control units P81 and P82, 4-20mA
-
DESCRIPTION
General features0
Combustible gas detection sensors to be used with the electronic control units P81 and P82.
The sensors are available in 3 versions: S81 for methane gas and city gas, S82 for LPG and S83 for carbon monoxide.
Calibration:
– S81: 10% LEL Methane;
– S82: 12% LEL Isobutane;
– S83: 200ppm CO.Self-extinguishing plastic enclosure.
Dimensions 66x90x45 mm (according to the model).
Unit weight 0,065 kg.
Environment temperature: 0 ÷ 50 °C (-20 ÷50°C).
Environment humidity ±90% U.R. without condensation.Electric features- Power supply from the control units P81 or P82.
- Absorption: 40mA (200mA).
- 3 terminals of 2,5 mm² for each sensor: C (-12…24V); S (+4…20mA); A (+12…24V).
-
ADVANTAGES
0
Combustible gas detection sensors to be used with the electronic control units P81 and P82.
The sensors are available in 3 versions: S81 for methane gas and city gas, S82 for LPG and S83 for carbon monoxide.
Advantages -
TECHNICAL SPECIFICATION
Code Gas typeOperating ambient temperatureProtectiondegreeS81 Methane gas or other light gas– 10 ÷ 50°C
IP44S82 LPG gas (cylinder liquid gas) or other heavy gas
– 10 ÷ 50°C
IP44S83 CO carbon monoxide
– 10 ÷ 50°C
IP44 -
HOMOLOGATION AND INSTALLATION
Homologation
- Complies with Directives/Norms EMC 89/336/CEE, Norm EN 50270
Installation and useWall mounting by means of screws and plastic anchors.
The correct positioning of the probes is essential for the system proper operation.
For this purpose the probes must be installed:
– in areas where always is required a natural circulation of the air;
– in areas not subjected to dust and dirt that can clog and disable the sensor;
– never near water jets, aspiration grilles, windows, vents, etc.;
– at an adequate distance from gas users to avoid system inappropriate interventions due to possible functional losses.In addition, the positioning depends of the gas type that must be detected:
– S81: up on the wall, about 20-30 cm from the ceiling;
– S82: down on the wall, about 20-30 cm from the floor;
– S83: about 1,5 m above the floor.In case of new installations, the sensors must be installed the most lately in order that the typical activity of the building yard
(especially welding, painting, sealing, etc.) cannot damage the same detectors (especially their sensing element). - TECHNICAL LITERATURE
-
FAQS
