Name: T3A Gas Detector
Brand: RKI Instruments

Overview

The T3A Series Gas Detector ambient air hazardous gas detector is a versatile assembly that uses an electrochemical, infrared, catalytic bead sensor element to detect a variety of gases. Wired power (12 to 35 VDC) with 4-20 mA analog and RS-485 Modbus outputs standard. Magnetic switches allow for non-intrusive calibration while in the field as well as full system settings and diagnostics.

The T3A represents the latest leading edge technology in fixed gas detection today.

Related Services

Fixed Systems Turnkey Solutions

Design, Consultations, and Engineering
Installation
Start-up
Training
System Maintenance

Applications

Petrochemical plants
Refineries
Water & wastewater treatment plants
Pulp & paper mills
Manufacturing facilities
Chemical plants

Sensor Options

Gas Type	Range	T90	Hazard Classification
LEL Catalytic	0 – 100% (0-5% Vol.)	< 90 sec.	Class 1, Div 1
CL2	0 – 10 ppm	< 60 sec.	Class 1, Div 2
CLO2	0 – 1 ppm	< 120 sec.	Class 1, Div 2
CO	0 – 300 ppm	< 30 sec.	Class 1, Div 1
CO2	0 – 5% vol.	< 30 sec.	Class 1, Div 1
H2S	0 – 100 ppm	< 30 sec.	Class 1, Div 1
H2S 2K	0 – 2000 ppm	< 25 sec.	Class 1, Div 1
HCL	0 – 30 ppm	< 300 sec.	Class 1, Div 2
HCN	0 – 30 ppm	< 70 sec.	Class 1, Div 2
HF	0 – 10 ppm	< 90 sec.	Class 1, Div 2
LEL-IR	0 – 100% (0-5% Vol.)	< 30 sec.	Class 1, Div 1
LEL-IR-HC	0 – 100% LEL	< 30 sec.	Class 1, Div 1
NH3	0 – 100 ppm	< 90 sec.	Class 1, Div 2
NH3 300	0 – 300 ppm	< 120 sec.	Class 1, Div 2
NH3 A	0 – 1000 ppm	< 120 sec.	Class 1, Div 2
NO2	0 – 20 ppm	< 25 sec.	Class 1, Div 2
O2	0 – 25 Vol.	< 15 sec.	Class 1, Div 1
PH3	0 – 5 ppm	< 30 sec.	Class 1, Div 2
SO2	0 – 20 ppm	< 35 sec.	Class 1, Div 1

Specifications

Sensor Type		Electrochemical, infrared, catalytic bead
Operating Voltage		Wired power (3-Wire) 12 to 35 VDC
Power Draw		2 Watts maximum
Protection		Power electromagnetic interference (EMI) filter 4-20 mA surge suppression RS-485 surge suppression
Display Screen		102×64 Resolution graphical LCD screen transflective (sunlight readable) with white LED backlight
Interface		3 Push-buttons (MENU, ADD and SUB) 3 Magnetic non-intrusive switches for calibration
Customizable Settings		2 Individual-configurable alarm LED/relay set-points
Temperature Range		-40°C to +54°C (-40°F to +129°F)
Output (digital)		RS-485 modbus
Wired (Analog) Output		4-20 mA (3-Wire) Fault terminal, wet relay contact. Has it’s own power. Optional 2 dry-contact relays with replaceable 4 amp fuses.
Product Dimensions		5.5 in, L x 6 in. W x 7 in. H (8 in. W x 17 in. H Max. dimensions with attachments)
Total Weight		6 lbs.
Remote Sensor Kit (Optional Additional Feature)		Remote sensor kit with enclosure (5 pin) • Electrochemical sensor max. length: 250 feet • Infrared sensor max. length: 40 feet • Catalytic bead sensor max. length: 15 feet
Hazardous Location Approvals	Main Enclosure	Certified explosion / flame proof CQPSUS Class I, Division 1 & 2, Groups B, C & D Nema 3, 4, 4X, 7 (B, C, D) 9 (E, F, G) Temp.= -20°C to +60°C
	Sensor Housing	Certified explosion / flame proof CQPSUS Class I, Division 1 & 2, Groups B, C & D Temp.= -40°C to +60°C Note: Certification only applies to some gases. Toxic gases not certified for Div. 1 locations are suitable for Div. 2 applications but have no third party approval.
Controllers		Controllers compatible with all RKI Beacon controllers, as well as most DCS / PLC systems: Beacon 110, Beacon 200, Beacon 410A, Beacon 800, and MC-6400
Warranty		1-Year warranty for electronics and sensor

Download

T3A Literature
Product Datasheet	Operating Manuals
T3A Product Datasheet	T3A Operator’s Manual

Distributor Resources

T3A Price List & Resources
(Authorized Distributor Only)

T3A Gas Detector

3-Wire Explosion Proof Transmitter

Features

Related Services

T3A Literature

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