This product appears in the RKI Instruments Catalog
Rolls-Royce
Bureau Veritas
Renouveau La Fontaine
Englobe
National Defence
Government of QuébecOverview
The RKI T3A is a 3-wire explosion-proof fixed gas detector and transmitter. It uses electrochemical, infrared or catalytic bead sensors, runs on 12 to 35 VDC and outputs 4-20 mA and RS-485 Modbus, with magnetic switches for non-intrusive calibration.
- 4-20 mA (3-wire) and RS-485 Modbus outputs standard
- Sunlight readable 102 x 64 graphic LCD with white LED backlight
- Magnetic switches for non-intrusive field calibration, settings and diagnostics
- 2 configurable alarm set points with LEDs; optional 2 dry-contact relays with 4 A fuses
- Operates from -40 to +54 °C
- Optional remote sensor kit: up to 250 ft (electrochemical), 40 ft (infrared) or 15 ft (catalytic bead)
- Works with RKI Beacon 110, 200, 410A, 800 and MC-6400 controllers and most DCS / PLC systems
- Main enclosure CQPSUS Class I Div 1 and 2 Groups B C D; NEMA 3, 4, 4X, 7 and 9
Both include the junction box. Other T3A sensors (LEL, CO, H2S, O2, NH3, Cl2, SO2, NO2 and more) are available on request. Request a quote for pricing and availability.
Specifications
- Sensor Type
- Electrochemical / infrared / catalytic bead
- HF Sensor
- 0-10 ppm / T90 < 90 s / Class 1 Div 2
- CO2 Sensor
- 0-5 % vol / T90 < 30 s / Class 1 Div 1
- Operating Voltage
- Wired power (3-wire) 12 to 35 VDC
- Power Draw
- 2 W maximum
- Protection
- EMI filter / 4-20 mA and RS-485 surge suppression
- Display
- 102 x 64 graphic LCD, transflective, white LED backlight
- Interface
- 3 push-buttons (MENU / ADD / SUB) + 3 magnetic switches
- Alarm Settings
- 2 configurable alarm LED / relay set points
- Outputs
- RS-485 Modbus / 4-20 mA (3-wire) / fault wet relay contact / optional 2 dry-contact relays
- Temperature Range
- -40 to +54 °C (-40 to +129 °F)
- Dimensions
- 5.5 x 6 x 7 in (8 x 17 in max with attachments)
- Weight
- 6 lb
- Hazardous Location Approvals
- Main enclosure and sensor housing CQPSUS Class I Div 1 and 2 Groups B C D; certification applies to some gases only
- Warranty
- 1 year, electronics and sensor
Documents
Calibration and repair
Send it to our Montreal service team. We evaluate the instrument and send a detailed quote before any work starts.
Questions, answered
How fast will I get a price?
Send the quote request and a specialist replies within 4 business hours, Monday to Friday, 8:00 to 4:30 ET.
Can we pay on account or by purchase order?
Yes. With established credit, terms are Net 30 days, and you can send your purchase order with the quote request. We also accept Visa, Mastercard and American Express.
How is shipping charged?
On quotes and account orders, freight is F.O.B. Montréal: the carrier charge is worked out at shipment from the packed weight and dimensions, and added to your invoice. In-stock items can also be picked up the same day in Montréal (8605 rue du Champ-d'Eau).
Can I return it?
Yes, within 30 days of purchase, with a return authorization number from customer service first. A 25% restocking fee applies, unless it is a defect covered by the warranty. Special orders, hazardous materials, flammable liquids and gases can't be returned. Return policy
Can ERE calibrate or repair it?
Yes. Our Montréal service shop calibrates and repairs it in-house. Request service
What warranty does it carry?
The manufacturer's warranty applies. The exact terms are in the warranty document. Read the warranty
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