2920 Float & Tape Transmitter

2920 Float & Tape Transmitter

The 2920 Float & Tape Transmitter (FTT) provides data from the tank side to the control room for use in inventory management applications. It accurately converts mechanical level measurement from the connected tank gauge, integrates temperature and HART devices, and provides digital inputs and digital outputs for the indication of alarms or drive relays.

 

  • Overview
  • Specifications
  • Options
  • Resources
  • Related Products

Touch Control

A digital display with capacitive touch control interface provides inventory information at the tank side and configuration of the transmitter for all connected devices. Each parameter, such as communications, baud rate, unit address, etc., is easily configured using the touch screen display.

 

 

Absolute Accuracy and Reliability

The 2920 FTT utilizes an absolute capacitance encoder and precision direct-drive gearing to accurately convert the mechanical level measurement from the connected tank gauge – the most accurate encoder technology on the market today. Furthermore, the encoder requires no service, no battery back-up and contains no parts that can wear out over time.

 

 

On Your Tank

The 2920 FTT is easy to install. It mounts directly to most mechanical tank gauges, (Varec, GSI, L&J, Sakura) and integrates into existing tank gauging communication loops (MODBUS®, Biphase Mark, Mark/ Space and Tankway).

 

 

Complete Tank Gauging System

The 2920 FTT integrates ancillary equipment, and sensors, and provides the first steps to automation and control. It supports up to 4 HART devices and provides an on‐board 3‐wire RTD temperature input. It can activate alarms or relays using analog and digital inputs/outputs, SPDT cam-operated outputs and software-driven contact outputs.

 

 

Training and Support

The 2920 FTT is available to ship today. Every transmitter is supplied with detailed user instructions, but sometimes you need to see how it’s done. That’s why we also have a YouTube channel with basic how-to-videos. If you need direct support, we offer standard training and service programs that we tailor to your staff, and your facility.

 

Accuracy & Repeatability

± 1/16″ (1.58 mm)

Range

0 to 120 ft; Meters: 0 to 36 m
Limit switch range is 100 ft (30 M) maximum

Communications

Mark/Space
EIA‐485/GSI Type MODBUS®
Biphase Mark
L&J Tankway

Power

Standard: 20 to 65 VDC 0.05A
Optional: 40 to 65 / 110 / 220 – 240 VAC
750 mW nominal, 50/60 Hz
Built-in galvanic isolation for both AC and DC models

Temperature Input

High‐accuracy 20‐bit analog‐to‐digital converter. 3‐wire RTD Copper (CU90, CU100) or Platinum (PT100).

Discrete Inputs

Enables connection to ancillary devices, such as switches, pumps or valves
Standard: (DC Unit) Option: Two (2) discrete inputs.
Optional: (AC Unit): 4 discrete inputs
Host signal: Open/Closed

Contact Outputs

Triggers temperature or level alarm lights, horns, etc.
Optional (AC Unit): Four (4) software‐driven contact outputs
Host signal: Open/Closed
Ratings:
0.6 A @ 125 Vac
1 A @ 30 Vdc
0.6 A @ 110 Vdc

I/O

Analog Input (x1) 4 to 20 mA
Analog Output (x2) 3.5 to 22 mA

HART

HART master for ancillary devices
Typically 4 max, depending on current consumption

Limit Switches

11 amp ‐ 125, 250, 277 VAC
4 amp ‐ 125 VAC Tungsten filament Lamp
Load: 1/3 HP ‐ 125 VAC, 250 VDC
Load: 1/2 amp ‐ 125 VDC, 1/4 amp ‐ 250 VDC

Approvals

cFMus (USA & Canada) ‐ Explosion proof: Class I, Division 1, Groups C&D T5 ‐25 °C ≤ Ta ≤ +85 °C
Flameproof, Class I, Zone 1, AEx/Ex d IIB T5 ‐20 °C ≤ Ta ≤ +85 °C
ATEX/IECEx (International) – Flameproof, Class I, Zone 1, Ex II 2G, Ex d IIB T5 Gb ‐20 °C ≤ Ta ≤ +85 °C

For complete technical specifications, download the technical document or product manual.

01 Approvals
  • cFMus
  • ATEX/IECEx
02 Power Input
  • DC
  • AC
03 Communications
  • EIA-485 MODBUS/GSI Type MODBUS®
  • Biphase Mark
  • Mark/Space
  • Tankway (L&J)
04 Limit Switches
  • None
  • Two (2) SPDT Limit Switches (180° adjustable dwell, positive activation)
  • Four (4) SPDT Limit Switches (180° adjustable dwell, positive activation)
05 Limit Switch Range
  • Not Applicable
  • 0-25 ft
  • 0-50 ft
  • 0-100 ft
  • 0-7.5 m
  • 0-15 m
  • 0-30 m
06 Digital I/O
  • None
  • 2 Digital Inputs
  • 4 Digital Inputs + 4 Dry Contact Outputs
07 Analog I/O
  • None
  • Analog Input (4-20 mA)
  • Analog Output (4-20 mA)
  • Analog Input & Outputs (4-20mA)
08 HART
  • None
  • HART Master
09 Display Orientation
  • Forward Facing
  • Backward Facing
  • Side Facing

Video

2920 FTT Example Parameter Configuration Analog Output
Example demonstration of using Varec's 2920 FTT touch display to configure the Analog Output parameter.
2920 FTT Example Parameter Configuration Critical Low Level
Example demonstration of using Varec's 2920 FTT touch display to configure the Critical Low Level parameter
2920 FTT Example Parameter Configuration HART Master
Example demonstration of using Varec's 2920 FTT touch display to configure the HART Master parameter.
2920 FTT Example Parameter Configuration Tank Shape for RTGs
Example demonstration of using Varec's 2920 FTT touch display to configure the Tank Shape parameter for radar tank gauges.
2920 Float and Tape Transmitter Interface Display Overview
The first of a series of videos that demonstrates Varec's 2920 FTT touch display and configuration interface. View more here.

Datasheet

2920 Float and Tape Transmitter
The 2920 Float & Tape Transmitter (FTT) provides data from the tank side to the control room for use in...

Manuals

2920 Float and Tape Transmitter Installation and Operation Manual
Designed to assist the user in the installation, operation, maintenance, and troubleshooting of the 2920 Float and Tape Transmitter.

Parts and Accesories

2920 Float and Tape Transmitter Spare Parts List
Parts list for the 2920 Float and Tape Transmitter.

Technical Specifications

2920 Float and Tape Transmitter Technical Specifications
Technical specifications of the 2920 Float and Tape Transmitter.

Certificates

ATEX Approval 2500 6000x 4560 2910 2920 8200 8240
QUALITY ASSURANCE NOTIFICATION No. FM16ATEXQ0117 in accordance with the ATEX directive 2014/34/EU, ‘Equipment and protective systems for use in potentially explosive atmospheres’
IECEx Approval 2910 2920 8200
IECEx Certificate of Conformity INTERNATIONAL ELECTROTECHNICAL COMMISSION IEC Certification Scheme for Explosive Atmospheres

Case Study

Integrating N2920 Float and Tape Transmitter for Higher Accuracy
The engineering team at the Bayway Refinery had to solve several problems. They needed a solution to automate, measure and...

Brochure

Float and Tape Tank Gauging Solutions for Bulk Liquid Storage Tanks
The Varec brand of automatic tank gauges are often referred to as ‘float and tape devices’ due to the manner in...
Tank Gauging Products for Bulk Liquid Storage Tanks
Simple, safe and reliable inventory measurement using float and tape, servo, radar, transmitters, and other tank gauging equipment and accessories.
Inventory Control Solutions
Integrate Field Instruments and Software for Complete Asset Management

White Paper

Level Up! The True Cost of Accuracy
In recent years, European tank gauging manufacturers have focused their marketing efforts on persuading tank farm, terminal, and refinery owners...