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SERIES 3000 MKIII TECHNICAL MANUAL
4. Introduction
The Series 3000 MkIII gas detector is designed to detect toxic or oxygen gas hazards in zone 0 or
1 or 2 or 20 or 21 or 22 hazardous areas in Europe, and hazardous locations Class I, Divisions 1 &
2, Groups A, B, C & D; Class II, Divisions 1 & 2, Groups E, F & G application in North America. A
local LCD provides gas type and concentration information and when magnetically activated enables
non-intrusive one man calibration and operation. The sensor interface to the transmitter is Intrinsically
Safe (IS) allowing it to be 'hot swapped' without the need for removing power to the detector. The
replacement plug in smart sensors are supplied pre-calibrated. A remote sensor mounting kit allows
the sensor to be mounted up to 50 feet (15 meters) from the intrinsically safe transmitter. The output
from the transmitter is an industry standard 2 wire 4-20mA loop (sink) suitable for connection to a wide
range Honeywell Analytics or 3rd party control equipment / PLCs.
4.1 Product overview
The Series 3000 MkIII detector comprises of the main parts shown below.
Terminal Module
Locking Screw
Cover
4.2 Transmitter
The transmitter cover has a glass window which allows use of the magnet to activate the three
user interface magnetic switches that are located on the front of the display module. This allows for
non-intrusive set up and operation. The display provides both numerical and icon information.
Magnetic
MENU/ENTER Switch
Gas Type
Gas Reading
Magnetic
DOWN Switch
Diagram 2: Series 3000 MkIII Display and Magnetic Switches
Seal
Display Module
Diagram 1: Series 3000 MkIII Exploded View
Series 3000 MkIII
M20 or 3/4"NPT
cable/conduit entry (x2)
Transmitter Enclosure
Smart Sensor
Sensor Retainer
Weatherproof Cover
Calibration Icon
Test Pass Icon
Warning/Fault Icon
%Vol
ppm
Measuring Units
5
MAN0917_Issue 6_08/2015
Inhibit Icon
Magnetic
UP Switch
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