Electricity and Control February 2024

SENSORS + SWITCHES : PRODUCTS + SERVICES

Versatile, high-performance gas detectors

Many prerequisites come into play when selecting gas detection instruments, including maximum flexibility, high performance and minimal installation costs. Additionally, modern expectations extend to smart features and the ability to detect explosive, toxic or asphyxiant gases. The list of potential solutions soon becomes short. One proven and increasingly popular option is the iTrans 2 fixed gas detector from Teledyne Gas & Flame Detection. Offering smart sensor capabilities that support an intelligent electronics platform, the iTrans 2 provides one or two points of detection from a single head for maximum flexibility, with both readings shown on the standard-issue LED and display. Gas sensors are mountable directly to the transmitter, or remotely. For the detection of explosive and toxic gas, or oxygen, the iTrans 2 accepts infrared, catalytic bead or electrochemical sensors. Specifically, in addition to the LEL (lower explosive limit) sensor range, the iTrans 2 is configurable with a 0 to 100% volume methane infrared sensor for biogas applications and CO 2 infrared sensors ranging from 0.5% to 100% volume. All are pre-calibrated using smart technology to enable automatic sensor recognition and data transfer. The device displays sensor life data automatically after each calibration. Offering cable-saving and time-saving installation, the iTrans 2 is suitable for almost any application via com mon configurations that include 3-wire (4-20 mA) and 4-wire (digital ModBus) models. Both allow for full use of the gas detector’s features and options and can be used with all iTrans 2 sensors. The gas detectors offer analogue 4-20mA and digital RS-485 Modbus outputs. The HART communication pro tocol is optional, enabling remote communication across the 4-20mA signal for diagnostics, commissioning and calibration. A simple magnetic wand further supports The controller is suitable for both manual and automatic operation. The product is equipped with relay/ SSR/ and analogue outputs. The TX series controllers, similar to those in the TK series, have a 50 ms sampling cycle and an equally high accuracy of ±0.3%. The large and easy-to-read display and a slimmed-down enclosure (the rear part of the controller has been shortened by 30%) offer clear advantages. Programming the controller can be done using the DAQ Master software. The compact controller is equipped with the most important buttons for controlling the device, making operation simple and intuitive. ARIO I/O modules Based on its continuous research Autonics regularly introduces new products to the market and, as well as the controllers described above, these include the input/ Continued from page 22

ease of use by al lowing full transmitter configuration and cali bration without opening the explosion-proof hous ing. The housing is sup plied as standard in epoxy-coated

aluminium, with an optional 316 stainless steel version availa ble for corrosive environments. Operating tem perature range is -40°C to +75°C. Although this ro

With smart sensor capabilities that support an intelligent electronics platform, the iTrans 2 provides one or two points of detection from a single head for flexibility.

bust specification is ideal for many heavy industry appli cations, the iTrans 2 also serves well in smaller systems and boiler rooms, for example. It is suitable for sectors that extend from oil and gas, offshore drilling, utilities and petrochemicals, to water and wastewater treatment, and food and beverage production. Certifications include CSA, ATEX, IECEx, INMETRO, CCC and China Ex. Notably, the microprocessor-controlled transmitters are capable of plug and play, standalone operation or multi-point system configuration. The monitor’s stand alone operational ability is delivered via optional on board relays that can activate alarms, horns or fans, and can also shut down a system without the need for return wiring to a central control panel. With high levels of versatility and functionality, the iTrans 2 from Teledyne Gas & Flame Detection has prov en itself in wide ranging applications. □ output modules from the ARIO series. These I/O modules are compatible with DAQ Master so no additional software is needed to control the modules along with other electronic solutions by Autonics. industrial Ethernet Fieldbus communication is used for control via an industrial PC or a PLC. The ARIO series consists of a range of input/output, power, power supply and temperature modules. For more demanding applications, they can be expanded to include up to 64 modular units. With a hot-swap system incorporated, active module components can be replaced during operation without the need to reboot or shut down the device. The ARIO I/O modules keep track of parameters and provide real-time diagnostics of input and output signals. Solid workman ship and robust, compact construction make for many years of reliable operation in tough industrial conditions.

For more information visit: www.tme.eu/za

FEBRUARY 2024 Electricity + Control

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