Oldham Simtronics iTrans 2 Fixed Gas detector
$1,335.00
Bulk Orders
Characteristics
- Large Sensor Offering – Electrochemical, Catalytic and Infrared
- Non-Intrusive Calibration
- Smart Sensor
- HART (optional)
- RS-485 Modbus
- Programmable Relays (optional)
- Dual Gas Sensing (optional)
Applications
- Oil and Gas Industry
- Offshore Drilling
- Utilities and Power
- Petrochemical Industry
- Water and Waste Treatment
- Food and Beverage Production
Other features and benefits
| Dual Gas Sensing | The iTrans 2 can detect and display up to two gases on certain models. Both gas sensors may be mounted directly to the transmitter, or may be mounted remotely |
| Wide Sensor Offering | The iTrans 2 supports Electrochemical, Catalytic Bead and Infrared sensors. The iTrans 2 is available for most common industrial gases, allowing of standardization for your gas detection equipment. |
| Smart Sensors | The iTrans 2‘s smart sensors come factory pre-calibrated and automatically send sensor information, such as sensor life, to the transmitter. A sensor life indicator is displayed immediately after each calibration. |
| Dual-channel split-screen LED display |
For optimum visibility in dark places |
| Non-Intrusive Calibration |
The iTrans 2‘s non-intrusive interface keys operate with a simple magnetic wand and allow for full transmitter configuration and calibration without opening the unit’s explosion-proof housing. |
| Programmable Relays |
The microprocessor-controlled transmitters are capable of independent operation or multi-point system configuration. With optional on-board relays, the monitor has the added ability of stand-alone operation, activating alarms, horns or fans, and can also shut down a system without the need to wire back to a central control panel. |
| Multiple Wiring Options |
The iTrans 2 can be configured to meet almost any installation application. Common configurations includes: 3-Wire (4-20mA) Models – Allow for full utilization of the iTrans 2‘s features and options and can be used with all of the iTrans 2‘s sensors. 4-Wire (Digital ModBus) Models – Allows for full utilization of the iTrans 2‘s features and options and can be used with all of the iTrans 2‘s sensors. |
| HART™ Communication Protocol | With the optional HART Communication Protocol, the iTrans 2 offers remote diagnostics, set-up or calibration by super – imposing a high-frequency current across the industry standard 4-20mA analog line. |
| Stainless Steel Enclosure |
An optional stainless steel enclosure for corrosive environments |
Sensors
- The iTrans 2 is available with sensors for most common gases including: Infrared, CO2 , Catalytic Bead Combustible and electrochemical sensors. It can support simultaneous detection from two sensors, either directly attached to the display, or remote sensors.
Versatile
- The iTrans 2 can be configured to meet nearly any application through its state-of-the art features and options.
- Explosion-proof
- HART (optional)
- RS-485 Modbus
- Stainless Steel Enclosure (optional)
- Programmable Relays (optional)
- 3-wire, 4-wire Installations
- Dual Gas Sensing (optional)
- Remote Sensing (optional)
- Large Sensor Offering – Electrochemical, Catalytic and Infrared
Easy to use
- Smart Sensor
- Non-Intrusive Calibration
- Dual-channel split-screen LED display
Ordering information:
iTrans 2 offers a wide variety of sensor configurations and relay options for maximum flexibility and affordability. Use the following guide to select the options that best fit your monitoring needs and applications. Oldham recommends that a fixed system application survey be completed to help provide the most accurate assessment of your equipment requirements.
iTrans 2 Base Part Number : iTrans 2-ABCDEFG (sensor options listed below) Magnetic calibration tool, and calibration cup are standard items with all iTrans 2 monitors.

| Accessories | Part number | Image code |
| By-Pass / Flow-thru Kit | P/N 77014579 | a |
| Splash guard / remote Cal Cup for Toxic, O2, and LEL |
P/N. 77015303 | b |
| iTrans 2 Calibration Wand | P/N. 77024065 | c |
| iTrans 2 Splash guard | P/N. 77023588 | d |
| iTrans 2 Calibration Cup | P/N. 77023513 | e |

Measuring ranges:
| Combustible Gases | 0-100% LEL in 1% increments |
| Hydrogen | 0-999 ppm in 1 ppm increments |
| Oxygen | 0-30% by Volume in 0.1% increments |
| Ammonia | 0-500 ppm in 1 ppm increments |
| Carbon Monoxide | 0-999 ppm in 1 ppm increments |
| Hydrogen Sulfide | 0-500 ppm in 1 ppm increments |
| Sulfur Dioxide | 0.2-99.9 ppm in 0.1 ppm increments |
| Hydrogen Cyanide | 0.2-30 ppm in 0.1 ppm increments |
| Hydrogen Chloride | 0.2-30 ppm in 0.1 ppm increments |
| Phosphine | 0-1 ppm in 0.01 ppm increments |
| Nitrogen Dioxide | 0.2-99.9 ppm in 0.1 ppm increments |
| Nitric Oxide | 0-999 ppm in 1 ppm increments |
| Chlorine | 0.2-99.9 ppm in 0.1 ppm increments |
| Chlorine Dioxide | 0.02-1.00 ppm in 0.01 ppm increments |
| Carbon Dioxide | 0-100% by Volume in 1% increments |
| Carbon Dioxide | 0-0.5% by Volume in 0.01% increments |
| Carbon Dioxide | 0-5% by Volume in 0.01% increments |
Technical specifications:
| Sensors | Combustible Gases: Catalytic Toxic / Oxygen: Electrochemical, Infrared (CO2) |
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| Warranty from date of shipment |
2 years on electronics 3 years on infrared sensors (CO2) 2 years on catalytic (LEL), CO and H2S sensors 18 months on O2 sensors 12 months on other sensors |
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| Detected Gases | See Ordering Guide | ||||||||
| Material | Epoxy Coated Aluminium or 316 Stainless Steel | ||||||||
| Display | Dual-channel split-screen LED display (4 digit, 7 segment arrangement per channel) provides simultaneous display of one or two gases. |
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| Input voltage | 12-28VDC operating range (24VDC typical) |
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| Power Consumption |
150mA@24VDC (Electrochemical sensor) 250mA@24VDC (Combustible gases catalytic) 0.8A peak (single gas) 170mA@24VDC (Infrared) 0.5A peak (single gas) 350mA@24VDC (Combined catalytic/Infrared) 1,2A peak (two gas) |
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| Ingress Protection | NEMA 4X, IP66 | ||||||||
| Response Time (catalytic methane) |
T50: < 10 seconds T90: < 30 seconds |
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| Humidity Range | 10-90% RH (non-condensing), typical | ||||||||
| Temperature range | (sensor specific) -40°C to +75°C (-40°F to +167°F) |
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| Dimensions | 127 x 153 x 129 mm (5.0” x 6.0” x 5.1”), 2.9 Kg (6.4 lbs) | ||||||||
| Cable | 3-wire or 4-wire | ||||||||
| Maximum Cable Loop |
15 Ohm (3-wire configs) 10 Ohm (4-wire configs) |
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| Output Signal | Standard: 4-20mA (source) + RS-485 Modbus (9600 baud) Optional: HART Protocol |
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| Alarm relays (opt) |
3 alarm relays: Two user-programmable relays, SPST, N.O.; plus one fault relay, SPST, N.C. Contact capacity: 5A @ 30 VDC |
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| Homologations Sensor Specific |
|
(1) Combustible gases, Hydrogen, Oxygen, Carbon Monoxide, Hydrogen Sulfide, Sulfur Dioxide, Hydrogen Cyanide, Phosphine, Nitrogen Dioxide, Nitric Oxide, Carbon Dioxide
(2) Chlorine, Hydrogen Chloride, Ammonia, Chlorine Dioxide
Dual on-board versions are CSA certified only.
Infrared combustible sensors are not CSA approved.
How does the Oldham iTrans 2 work as a dual gas fixed detector?
The Oldham iTrans 2 (also written iTrans2) is a fixed point single or dual gas monitor: one transmitter displays one or two gas concentrations, each with an independent 4-20 mA output. Sensors mount on the transmitter or remotely (up to 200 meters away), so one dual sensor fixed gas detector can cover a combustible and a toxic gas from a single head.
Documented example: Teledyne’s ordering example iTrans 2 – 1C21241 is a unit with an on-board LEL sensor (4-20 mA scale 0-100) plus a remote mount H2S sensor (4-20 mA scale 0-500), with optional relays and Modbus RTU. Dual on-board versions are CSA certified only.
iTrans2 fixed gas transmitter: Modbus vs HART, which output do you need?
Every iTrans 2 gas monitor has a 4-20 mA output per channel. Digital communication is either RS-485 Modbus RTU at 9600 baud or HART on the channel-1 output, not both: the manual states ModBus is not available on a HART supported unit.
Relays (optional): two user-programmable relays (SPST, N.O.) plus one fault relay (SPST, N.C.), rated 5A @ 30 VDC. Alarm relays are non-latching.
iTrans 2 hazardous area markings: which apply to your sensor?
Approvals are sensor specific: confirm the marking for the gas you order. Source: user manual 77036429-EN, Rev 9.1. Infrared combustible sensors are not CSA approved.
| Property | Value | Source note |
|---|---|---|
| CSA: transmitter and LEL, H2, O2, CO, H2S, SO2, HCN, PH3, NO2, NO, CO2 sensors | Class I, Div 1, Groups B, C, D AEx d IIB + H2 T5 |
Manual, Agency Approvals |
| CSA: Cl2, HCl, NH3, ClO2 sensors | Class I, Div 2, Groups A, B, C, D AEx d IIB + H2 T5 |
Manual, Agency Approvals |
| IECEx: transmitter and the same sensors | Ex db IIB+H2 T5; IP66 | Manual, Agency Approvals |
| ATEX / IECEx: Cl2, HCl, NH3, ClO2 sensors | NO ATEX-NO IECEx ; IP65 | Manual, Agency Approvals |
| Remote sensor cable | #18 AWG (0.9 mm²) shielded, 200 m maximum | Manual, Sensor Wiring |
Catalytic vs infrared sensors on the iTrans 2: when to use which?
Catalytic bead sensors measure combustible gases in % LEL, electrochemical cells cover oxygen and toxic gases, and infrared (NDIR) covers CO2. Per Teledyne, infrared suits explosive gas detection where poisons could harm a catalytic cell. Per the manual, oxygen deficient atmospheres and silicone vapors may cause catalytic LEL readings to read low.
Calibration (user manual): toxic and catalytic LEL sensors at least quarterly; infrared annually, with a function test every 6 months.
Additional information
| Weight | 6.393 lbs |
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