Description - Tecno Control TS293KM Manuel D'utilisation

IST-2293.KM02.01/A
so (e mentre è ACCESO fisso), premere il tasto F2 e tenerlo premuto finché il Led Rosso non rimane spento per al-
meno 2 secondi (se il Led Rosso continua a lampeggiare, ripetere l'operazione). Chiudere la bombola e togliere il
TC011. A questo punto si possono verificare due casi:
Led Giallo e Verde accesi: la calibrazione è stata eseguita correttamente, dopo 8 secondi l'apparecchio si spe-
gne e si riavvia automaticamente in funzionamento normale (vedi capitolo FUNZIONAMENTO " Preriscaldo
Led Giallo acceso: la calibrazione è fallita. In questo caso, dopo 8 secondi si riavvia automaticamente e dopo il
preriscaldo, ripetere la procedura di "Calibrazione" senza reinserire il "Codice". Se la condizione persiste anche dopo
la sostituzione della "Cartuccia" sarà necessario inviare il rilevatore al fornitore per la riparazione.
"VERIFICA"( Codice: F2, F1, F2, F1): questa funzione, serve per controllare la corretta risposta del rilevatore al
Gas e può essere effettuata sia dopo la "Calibrazione" sia dopo l'installazione, ma va eseguita soprattutto durante
le manutenzioni periodiche, in quanto è l'unico metodo per controllare l'effettivo funzionamento dell'apparato.
La Verifica va eseguita utilizzando la miscela Gas Metano 20%LIE (0,88%v/v) in aria (20,9% Ossigeno circa).
Con i tasti eseguire il "Codice Verifica". Attendere che il Led Giallo lampeggi (il Verde rimane fisso). Infilare il
TC011 sul portasensore, regolare l'afflusso del Gas dalla bombola (0,88%v/v Metano+Aria), in modo che il flussometro
indichi circa 0,3 l/min (vedi
valore tra 184 e 216 mV. [ovvero che l'uscita in mA aumenti fino a circa 20 mA (±1,6) e la centrale, cui è collegato il Trasmettitore, in-
dichi circa 20%LIE (± 2)]. Se il valore è diverso è opportuno effettuare la "Calibrazione". Terminata la "Verifica", chiude-
re la bombola, togliere il TC011 e premere il tasto F2 per ripristinare le condizioni di funzionamento normale.
Considerare che l'uscita, tornerà progressivamente a 4 mA.
GB

DESCRIPTION

The TS293K series is a three-wire 4÷20mA transmitter able to detect combustible gases by employing a catalytic
sensor calibrated up to 20% LEL to different gases and find their best application in centralized alarm systems for
car parks, manufacturing industries, etc.
The instruments comprise of an certified enclosure in which the electronic circuit and the terminals are mounted.
The enclosure has downward facing cylindrical sensor housing with inside a "Replaceable Cartridge Sensor"
The instrument has a 4÷20mA linear output (S) with 20%LIE (Lower Explosive Limit) F.S. of detected gas. This output
is connectable to a remote Gas Central Unit as listed in
F2 key are used for Test and Calibration routine, protected by a code, and 3 Led shows the working conditions:
Red LED "ALARM":
Green LED "ON":
Yellow LED "FAULT":
NOTES ON THE AVAILABLE MODELS
The above Gas value is on compliance with EN61779-1.
TS293KM (Methane CH
its LEL (Lower Explosive Limit) is 4.4%v/v (%volume).
TS293KG (GPL) is calibrated to detect LPG, a gas heavier than air and consists of a mixture of 20-30% Propane
(C H ) and 80-70% Butane (C
3 8
Propane and 1.4%v/v for Butane. Standard calibration to LPG is carried out for Butane gas.
TS293KI (Hydrogen H
the lightest gas. Its density as to air is 0.07 and its LEL (Lower Explosive Limit) is 4%v/v (%volume).
TS293KB (Unleaded Gasoline/Petrol) is calibrated to detect Gasoline vapours heavier than air and highly
flammable. Its density as to air about 2.8 and its LEL (Lower Explosive Limit) is about 1.2%v/v (%volume).
OPERATIONAL DESCRIPTION (
The catalytic sensor is practically insensitive to humidity and temperature variations. The calibration is carried out
for the specific gas to be detected. Anyway, it can contemporaneously detect any other flammable gas that should
be present in the same environment.
Preheating: when powered, the sensor needs a time of preliminary heating of about 60 seconds. During this pe-
riod the yellow LED "FAULT" flashes. After this period, the yellow LED light off, the green LED "ON" illuminates to
indicate normal functioning. After this period the unit is able to detect gas even if it attains the optimum stability
conditions after about 4 hours continual functioning.
Normal operation: the green LED "ON" should be light on.
The Red LED (ALARM) illuminates when the Gas concentration attains 20%LEL (only if it be activate by Dip-Switch).
Faults: the instrument signal different kind of failures, as listed below. The Yellow LED illuminates and the "S" out-
put falls down to 0mA.
Yellow LED illuminates each 4 seconds (with Green LED activate): this happens when the "Cartridge Sensor" has
overcome its period of life (about 5 years) and its correct operation is not longer guaranteed. The detector keeps
on operating but it is necessary to replace, as soon as possible, the "Cartridge Sensor" with a new one. The type to
be required is described in
Yellow LED activate, Green LED off (0mA output signal): this signal different kind of faults. 1) The Dip Switch set
up is wrong, please verify
a new "Cartridge Sensor" is installed or it is not correctly connected or a not compatible one is mounted. Please
check the cartridge connections and compatibility
TECNOCONTROL S.r.l. Via Miglioli 47 SEGRATE ( MI )
Istruzione / User's Manual / Manuel d'utilisation
Fig.3). Controllare, con i puntali del volmetro sui Test-Point,
20% LEL alarm indication.
normal working condition.
the sensor should be faulty, disconnected, out of scale or expired.
) is calibrated to detect Methane, a gas lighter than air. Its density as to air is 0.55 and
4
H ). Propane density as to air is 1.56 while Butane is 2.05. The LEL is 1.7%v/v for
4 10
) is calibrated to detect Hydrogen, is a colourless, odourless, highly flammable gas and is
2
Note that the LEDs are not visible when the enclosure is closed
Table 3. The replacement procedure is described in the attached manual.
(see Table 2). 2) The "Cartridge Sensor" is not working, please replace with new one. 3) If
Table 1. On the Output PCB (Printed Circuit Board), F1 and
(see Table 3) these checks are made connecting and disconnect-
(vedi Fig.2) che raggiunga il
Tel: 02/26 92 28 90 Fax: 02/21 33 734
Pag.4/10
).