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SERIES 3000 MKII TECHNICAL MANUAL
S3KMKIIMAN_MAN0878_Issue 6_01/2014
4. Introduction
The Series 3000 MkII gas detector is designed to detect toxic or oxygen gas hazards in Zone 1 or 2 or 21 or 22
hazardous areas in Europe and North American Class I Division 1 or 2 areas and Class II Division 1 or 2 areas. 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 explosion proof transmitter housing. 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 MkII detector comprises of the main parts shown below.
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.
Terminal Module and
IS Barrier
Magnetic
MENU/ENTER Switch
Test Pass Icon
Calibration Icon
Gas Type
Warning/Fault Icon
Gas Reading
Inhibit Icon
Magnetic
DOWN Switch
Measuring Units
Magnetic
UP Switch
Locking Screw
Cover
Seal
M20 or 3/4"NPT
cable/conduit entry (x2)
Transmitter Enclosure
Weatherproof Cover
Sensor Retainer
Smart Sensor
Display Module
Diagram 1: Series 3000 MkII Exploded View
Diagram 2: Series 3000 MkII Display and Magnetic Switches
