3-Wire Explosion Proof Transmitter

Features

• Electrochemical, Infrared or catalytic bead sensors

• Wire powered (3-Wire), 12 to 35 VDC operating voltage

• Operating temperature range -40C to +60C

• LCD display with LED back-light

• 3 Push-button interface (ADD, MENU, SUB)

• Non-intrusive buttons using magnetic wand

• 2 Individually configurable alarms

• 2 Front panel LED indicators (amber and red)

• 2 Optional fully programmable alarm relays (dry contacts)

• Output options: 4-20mA (3-wire) analog, RS-485 Modbus, both standard Industry Applications

Description

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.

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 10264 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 -40C to +60C (-40F to +140F) Output (digital) RS-485 modbus Wired (Analog) Output 4-20 mA (3-Wire)

Fault terminal, wet relay contact. Has its 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.= -20C to +60C

Sensor Housing Certified explosion / flame proof CQPSUS

Class I, Division 1 & 2, Groups B, C & D

Temp.= -40C to +60C

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