3-Wire Explosion Proof Transmitter
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.
Features:
- Electrochemical, Infrared or catalytic bead sensors
- Wire powered (3-Wire), 12 to 35 VDC operating voltage
- Operating temperature range -40°C to +60°C
- 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
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 |
Replacement Sensors:
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-point
- Temperature Range: -40°C to +54°C (-40°F to +129°F)
- Output: RS-485 modbus
- Wire (analog) Output: 4-20 mA (3-Wire)
- Product Dimensions: 5.5 in, L x 6 in. W x 7 in. H
- Weight: 6 lbs
Downloads:
| Manufacturer | Oxidation Technologies |
|---|---|
| Call For Price | Yes |
| Gas | Ammonia (NH3), Arsine (AsH3), Carbon Dioxide (CO2), Carbon Monoxide (CO), Chlorine (Cl2), Chlorine Dioxide (ClO2), Ethylene Oxide (ETO), Formaldehyde (CH2O), Hydrocarbon (HC), Hydrogen (H2), Hydrogen Chloride (HCl), Hydrogen Cyanide (HCN), Hydrogen Fluoride (HF), Hydrogen Sulfide (H2S), Nitric Oxide (NO), Nitrogen Dioxide (NO2), Oxygen (O2), Ozone (O3), Phosphine (PH3), Sulfur Dioxide (SO2) |
| 4-20 mA Output | No |
| Field Replaceable Sensor | No |
| Auto Test Generator | None |
| Min, Max, Avg | No |
| Voltage Output | None |
| Datalogging | No |
| Rechargeable | Yes |
| Field Replaceable Battery | Yes |
| Warranty | 1 Year |
| Audible Alarm | Yes |
| Range | Gas Dependent |
| Unit Features | - Electrochemical, Infrared or Catalytic bead sensors - Wire powered (3-Wire) 12 to 35 VDC - Ideal for Refineries, water treatment plants, mills and more |
| Sensor Range | Gas Dependent |
| Integrated Relays | Yes |
| Sensor Range | Gas Dependent |
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