Oldham OLCT 20, Руководство пользователя

Страница: 33 / 36

10
– Special instructions for use in explosive atmospheres and
fonctional safety
29
Transfer curve for OLCT20 gas detectors
The curve below gives the transmitter output current as a function of gas
concentration. In the event that the user connects the transmitter to a non-
Oldham central controller, the user must ensure that the transfer curve is
compatible with the equipment's input characteristics to correctly interpret the
data coming in from the transmitter. Similarly, the central controller must
provide sufficient voltage to compensate for any voltage drop caused by the
cable.
Marking
Safety relevant parameters:
OLC 20d and OLC 20d HT
•
Maximum supply voltage: 2,8 Vdc
•
Maximum supply current: 400 mA
•
Maximum power: 0,8 W
OLCT 20d
•
Maximum input voltage: 30 Vdc
•
Maximum input current: 100 mA
OLCT 20i
OLC 20d detector
OLDHAM SAS
62027, ARRAS France
OLC20d
CE0080
INERIS 01ATEX0004X
II 2 G D
Ex db IIC T6 Gb
Ex tb IIIC T85°C Db
T.Amb : -20°C to 70°C
% range
46