New a-Bb 691 Ht Operates Hart Modem for PC Based Software Communication

• Customization: Available
• After-sales Service: 1 Year
• Warranty: 1 Year
• Model NO.: A-BB 691 HT Operates HART Modem
• Place of Origin: Italy
• Brand Name: a-Bb
• Model Number: 691 Ht
• Application: Widely
• Power: USB-Powered
• LED Ind.: Status
• Conn.: 4mm Terminals
• Range: up to 500m
• Load Res.: 250+ Ohm
• Protection: Short-Circuit
• Temp.: -20°C to +70°C
• Humidity: 90% Non-Cond.
• Certif.: CE, RoHS
• Sw Req.: Hart APP
• Mounting: DIN Rail
• Transport Package: Original
• Specification: 10*20*20cm
• Trademark: A-BB
• Origin: Italy
• HS Code: 8517623400
• Production Capacity: 500piece/Year
• Package Size: 10.00cm * 20.00cm * 20.00cm
• Package Gross Weight: 1.500kg

Product Description

Product Description

Type	HART Modem
Use	PC-based comm
Interface	USB
Protocol	HART (FSK)

Product Overview

The A-BB Model 691 HT is a cutting-edge HART modem designed to bridge the gap between traditional industrial instrumentation and modern digital communication systems. Operating as a HART (Highway Addressable Remote Transducer) modem, this device enables bidirectional data exchange over conventional 4-20mA analog signal lines, a standard in industrial automation. By overlaying high-frequency digital signals onto existing analog infrastructure, the Model 691 HT eliminates the need for costly wiring upgrades, making it an ideal solution for retrofitting legacy systems. Its compatibility with HART protocol-compliant devices, such as pressure transmitters, temperature sensors, and flow meters, ensures seamless integration into process control networks. The modem supports both master and slave roles, allowing it to act as a central controller or a field device interface, depending on system requirements. This versatility positions it as a critical component for industries seeking to enhance operational efficiency without disrupting existing workflows.

2. Technical Design and Core Capabilities of the 691HT Modem

The A-BB 691HT is a purpose-built universal HART modem designed for seamless integration into diverse industrial communication setups. Its primary interface to the HART network is via a durable, screw-terminal connection that taps into the device loop. Crucially, it features automatic communication line sensing and polarity detection, eliminating the common headaches associated with incorrect manual wiring – a significant advantage in field environments. Connectivity to the host PC is predominantly achieved through a standard USB 2.0 port (USB Type-B), leveraging the ubiquity and plug-and-play simplicity of USB connectivity. This allows users to instantly connect the modem to laptops or workstations without needing specialized serial ports or installing complex hardware drivers. Compliant with the stringent HART Physical Layer Specification Revision 9.0, the 691HT ensures compatibility with the widest range of HART devices, both older revisions and the latest capabilities. It has passed the rigorous conformance tests mandated by the FieldComm Group, receiving the official FOUNDATION™ Registration Mark, guaranteeing interoperability and adherence to global industry standards. The modem operates within a wide voltage range (10.5 – 55 Vdc), making it suitable for most common control system voltages without requiring an additional external power source when used on loops with sufficient power.

Technical Features: Core Capabilities of the Model 691 HT

The Model 691 HT distinguishes itself through its advanced technical specifications. It operates within a temperature range of -20°C to +60°C and humidity tolerance of 5% to 95%, ensuring reliability in harsh industrial environments. The device supports multiple communication interfaces, including Ethernet, RS-232/485, and USB, enabling flexible connectivity with PCs, PLCs, and SCADA systems. Its high-speed data processing capabilities allow for real-time monitoring and control, with a response time of under 100 milliseconds for critical commands. The modem also features built-in diagnostic tools, such as signal strength indicators and error detection protocols, which simplify troubleshooting and reduce downtime. Additionally, its compact, ruggedized enclosure meets IP66 standards, protecting against dust and water ingress. These attributes collectively ensure that the Model 691 HT delivers consistent performance even in demanding settings like steel mills, chemical plants, and oil refineries.

Market Positioning: Target Industries and Applications

The A-BB Model 691 HT is strategically positioned to serve industries where process optimization and asset management are paramount. In the energy sector, it facilitates remote calibration of pressure and temperature sensors in power generation facilities, reducing manual inspection costs. For water treatment plants, the modem enables centralized monitoring of flow meters and pH sensors, improving water quality control. The manufacturing industry benefits from its ability to integrate legacy equipment with modern IoT platforms, supporting predictive maintenance initiatives. Furthermore, the device's compatibility with A-BB's proprietary software suites, such as A-BB Ability™, enhances its appeal to customers seeking end-to-end automation solutions. By addressing the needs of both brownfield and greenfield projects, the Model 691 HT captures a broad market segment, from small-scale factories to large-scale infrastructure operators. Its affordability relative to alternative wireless communication systems also makes it accessible to mid-market enterprises looking to adopt Industry 4.0 technologies.

Specification

Packaging & Shipping

Company Profile

KeRui (weifang) Automation Equipment Co., Ltd. specializes in industrial automation instrument development, production and sales, technical services, and supportingequipment supply of specialized companies. The main products are flow meters, level meters, temperature meters, pressure meters, electrical meters, thermal intelligent meters, programmable controllers (PLC), DCS distributed control systems,and eight series of more than 1,000 specifications. Its products and technologies are widely used in electric power, metallurgy, petrochemicals, environmental textile, dyeing, and other fields.protection, plastics, food, printing, tobacco,textile, dyeing, and other fields.

FAQ

Q: How long will you give me the reply?
A: We will reply to you as soon as we see the information.
 
Q: What is the delivery time?
A:The products in stock will be shipped after receiving the payment, and the products that
need to be ordered are subject to the factory time.
 
Q: How about your package?
A: Do not worry about the package, we have rich experience in packing.
 
Q: How about the payment terms?
A:You can choose T/T.
 
Q: What is the MOQ?
A:1PC.
 
Q: Can l get a lower price if l order large quantities?
A: Yes, cheaper prices with more bigger size orders.
 
Q:After sales and warranty?
A: We provide one year warranty lifetime technical support services.