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EsiWelma s.r.l.

 

rev. 01 of 01-09-10 / pg. 

1

 

 

E190.302

 

 

 

LPG and Methane gas detectors 

for homes, recreational vehicles and similar sites 
 

ESN.0.P..          ESN.0.G.. 

for LPG                                     for Methane 
 
Conformity standard EN50194 

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LPG and Methane gas detectors for homes, recreational vehicles and similar sites. 
Replaceable pre-calibrated sensor module prolongs the detector's life to 10 years or more. 
230Vac, 12Vac/dc or 12…24Vac/dc power supply, depending on the model. 
Solid state 12Vdc command output of max 13W suitable for ES.E.. Sensigas

®

 solenoid valve (normally 

open) or of another manufacturer but having the same characteristics.

 

Integrity control of electric connection between detector and solenoid valve. 
Relay command output with  voltage free contact suitable for 230Vac solenoid valve or other command 
or alarm devices. 
Possibility of parallel connection of more than one detector, also for monitoring different gases. 

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Use

 

The ESN.0.P/.G detectors can be used to provide a visual/audible alarm and to control a gas 
shut-off valve (and/or to control other alarm transmitters or actuating devices), where there are 
abnormal concentrations well below the LPG or Methane gas hazard threshold. 

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Operation

 

The detector will enter a warm-up phase after power-up; this will take about 60" and during 
this time the detector is inoperative.   At the end of the warm-up phase, the detector enters 
normal operation mode, and will continue in this state until it detects gas. 

 

Gas detection  

When the gas concentration exceeds the threshold set-points, the detector senses its 
presence and goes into the alarm condition indicated by the red LED coming on, by the sound 
of the integrated buzzer and by the activation of the relay. After about 20s, it transmits a 
command to shut off the manual reset solenoid valve (transmitting a command pulse of 0.5s 
every 10s), signalled by a short series of flashes of the yellow LED. 
Once the alarm condition is normalised, the detector is restored to its normal operating status. 
Depending on the type of system constructed, it may be necessary to manually reset the 
solenoid valve to restore gas flow. 

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Power supply

Detector 

230Vac 12Vac/dc 

12…24Vac/dc 

For LPG gas (type A) 

ESN.0.P.A ESN.0.P.A.D ESN.0.P.A.E 

For Methane gas (type A)

ESN.0.G.A ESN.0.G.A.D ESN.0.G.A.E 

For LPG gas (type B) 

ESN.0.P.B ESN.0.P.B.D ESN.0.P.B.E 

For Methane gas (type B)

ESN.0.G.B ESN.0.G.B.D ESN.0.G.B.E 

Type A

 = with direct command output for low voltage solenoid valve and auxiliary relay 10A / 250Vac 

Type

 

B

 = only visual/audible alarm (no command output) 

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Available 
models  
and ordering 
information 

Summary of Contents for Sensigas ESN.0.P Series

Page 1: ...________________________________ Operation The detector will enter a warm up phase after power up this will take about 60 and during this time the detector is inoperative At the end of the warm up phase the detector enters normal operation mode and will continue in this state until it detects gas Gas detection When the gas concentration exceeds the threshold set points the detector senses its pres...

Page 2: ...ed close to the ceiling Install it about two metres from the gas device and about 30 cm from the ceiling For LPG liquid gas in cylinders since this gas is heavier than air it will be concentrated close to the floor Install it about two metres from the gas device and about 30 cm from the floor The detector must not be installed outdoors near stoves and cooking appliances near sinks and taps near ex...

Page 3: ...nts or polishes or from the fumes generated by cooking may cause inappropriate action of the detector and in the long term could affect the reliability of the device The particular Methane and LPG odorization made by the distributor together with the high sensitivity of the human olfactory apparatus make it possible to smell the presence of these gases already at extremely low concentrations so a ...

Page 4: ...several locations The contacts must be connected in series Example d Command of a solenoid valve Normally Open from several locations The outputs up to 9 must be connected in parallel respecting the polarities ___________________________________________________________________________________________ ___________________________________________________________________________________________ Connec...

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