TELEDYNE OLDHAM SIMTRONICS OLCT 80 d, Руководство пользователя, Страница: 11 / 116

OLCT 80
GAS TRANSMITTER
USER MANUAL
NPO80GB
Revision F.1
5
2 Transmitter Overview
2.1 Purpose
Gas detector
OLCT 80 is a digital and analog transmitter designed to measure combustible and
toxic gases, as well as oxygen levels, in ATEX zones. The
OLCT 80 has 2 auxiliary inputs, ANA1
and ANA2, with a 4-20 mA signal, to monitor up to 3 parameters simultaneously.
The transmitter also includes a digital LCD display, two alarm relays with programmable
thresholds and a fault relay.
The device is programmed using an intrinsically-safe infrared remote control that can be used in
ATEX zones.
2.2 Versions
2.2.1 Explosion-proof, intrinsically-safe versions
The following types of transmitters are available:
•
Explosion-proof: the enclosure and sensor pack assembly is explosion-proof. The
explosion-proof certified version is designated
OLCT 80d.
•
Explosion-proof + intrinsically-safe: the transmitter's enclosure is explosion-proof and the
sensor pack is intrinsically-safe. Only the versions using an electrochemical sensor are
available in this style. The explosion-proof, intrinsically-safe certified version is designated
OLCT 80id.
The table below lists the versions available.
OLCT 80d OLCT 80id
Catalytic sensor
Electrochemical sensor
XPIR infrared sensor
Table 1: comparison of OLCT 80 detectors.