PT395 Series Detector
Overview
1. Model PT395 Sensor is a single point fixed detector and transmitter for the
detection of toxic and flammable gases in ambient air. Detector is designed
and built suitable to be used in hazardous area. The detector is approved for
use in Class I Division 1 & 2 classified areas (North America) or Zone 1 and 2
(International).
2. The transmitter features a display and three programmable relays for
controlling external devices like alarms, sirens, switches and solenoid
valves. The transmitter provides an industry standard 3-wire, 4-20mA
(source) output for connection to a gas detection system or a PLC.
Table I lists the target gases and the detection ranges. The unit displays the gas concentration
and transmits a linear 4-20mA analog output signal proportional to the gas concentration
displayed. The unit is also equipped with a forms “C” type alarm relay contacts.
The detector also features a non-intrusive calibration. Calibration is performed by activating an
internal magnetic switch. Calibration is an easy automated procedure that does not require
any manual adjustment to the unit. All calibration and alarm configuration data is retained in a
non-volatile memory.
Field Cable Entry (x2)
¾” NPT
One Entry with Ex Plug
Stainless Steel (316)
Sensor Head Assembly
Transmitter assembly
Mounting Holes (X2)
Earth Ground Lug
Figure 1. PT395 Series Detector
Alarm LED Indicators