Greyline TTFM 6.1 Ultrasonic Flow Meter

Descriptions of Greyline TTFM 6.1 Ultrasonic Flow Meter

The TTFM 6.1 works on a wide range of pipe materials including carbon steel, stainless steel, ductile iron, cast iron, PVC, PVDF, fiberglass, copper, brass, aluminum, and pipes with bonded liners including epoxy, rubber, and Teflon. The non-intrusive, clamp-on ultrasonic sensor fits any pipe with an inside diameter from 2 to 48 inches. Display and totalize flow in your choice of engineering units (gallons, liters, etc.).

The TTFM 6.1 transit time flow meter includes an isolated 4-20mA to transmit flow to remote displays, recorders, or controllers. The two programmable relays (upgradeable to six) can be used for flow control, flow alarms, or flow proportionate pulse.

Calibration of the TTFM 6.1 ultrasonic flow meter is easy with the built-in 5-key calibrator. The standard sensor is rated non-incendive for Class I, Division II hazardous locations and the TTFM 6.1 can be equipped with optional Intrinsic Safety Barriers for sensor installation in Class I, Division I hazardous locations. A built-in 26 million point data logger with USB output to flash drives is included as standard. A Modbus RTU via RS-485 is available as an optional upgrade for wireless communication.

As the saying goes, great things come in threes. With only three easy-to-select transducer sizes that work on all common pipe materials, the TTFM 6.1’s intuitive and powerful hardware combined with our world-class support team will help make you look and feel like an expert.

Benefits / Functions of Greyline TTFM 6.1

Easy to Choose

With three easy-to-select transducer sizes that work on all common pipe materials, and options tailored to fit your
application, the TTFM 6.1 is the best choice to specify for your next clean-fluid flow application.

Easy to Use & Maintain

With interchangeable, clamp-on transducers, standard mounting hardware, and a quick setup menu, installation is quick and shutdown-free. Perfect for both retrofits and new installations. With no moving parts, there is little-to-no no maintenance required, and with solid-state components, there is no drift in performance over time ensuring accuracy and peace of mind.

Easy Assistance Anywhere

With real-time sales and application support direct from Pulsar Measurement, world-class assistance is just a phone call away. For applications that require periodic recalibration, we’re ready to support you with our comprehensive calibration techniques and fast turnaround

Non-Contacting Flow Measurement

Ultrasonic transducers are mounted on the outside of pipes to measure the flow rate of clean, non-aerated fluids like water, chemicals, and oils. The clamp-on transducers can be mounted without system shutdown, with no pressure drop, and with no obstruction to flow.

User-Friendly Operating System

Use the built-in keypad for fast and easy programming with a menu selection of pipe diameter, pipe material, liquid type, and measurement units (gallons, liters, etc.). In the event of a power outage or disruption, the Greyline TTFM 6.1 retains settings, calibration values, and totalizer readings with its onboard memory.

Industrial Automation Protocols

Instantaneous flow rate, volume total, run hours, and diagnostic information are just some of the information available via optional Modbus RTU or HART communications.

Wide Range of Applications

Powerful new signal processing and multiple transducer options allow the TTFM 6.1 to be used accurately and without complicated setup on a wide range of pipe materials and applications.

Measures Flow from the Outside of Pipes

The TTFM 6.1 Transit-Time Flow Meter works by measuring the time of flight difference for ultrasonic sound pulses transmitted from one transducer to another. Depending on the mounting configuration, the signal may cross the
pipe once, twice, or four times. The time between transmitted and received signals is precisely measured by the flow meter. Ultrasonic signals are sent upstream and then downstream with the transducers alternating their functions as transmitters/receivers.

The transit time in the direction of flow is always faster than the transit time against the flow. By comparing these differences with precision timing circuits, TTFM 6.1 can accurately calculate the flow rate. Because the ultrasonic
signal is transmitted across the pipe, an average of the flow profile is calculated. TTFM 6.1 transducers can be mounted on vertical or horizontal pipes, and the pipe must be full. The choice of V, Z, or W mounting method depends on the application and pipe diameter.

Features:

• Works on metal and plastic pipes
• The flow velocity of ±0.07 to 39ft/sec typical
• 2 to 48-inch pipe diameter
• ±1% of reading or 0.1ft/sec accuracy
• ±0.25% repeatability & linearity
• 26 million point data logger standard
• NEMA4X (IP 66) polycarbonate case
  • Water & dust tight with a clear, shatterproof cover
• Large backlit flow rate display and totalizer
• Isolated 4-20mA/0-5V output
• Built-in 5-Key Calibrator
• Optional Modbus RTU via RS-485
• Control Relays:
  • 2 programmable control relays standard
  • 4 additional relays are optionally available

Specification

General Specifications

• Operating Parameters: For clean liquids in full pipes with less than 2% solids or gas bubbles
• Programming: Built-in 5-button keypad with English, French, and Spanish menu language selection
• Electronics Enclosure: NEMA4X (IP66) polycarbonate with clear, shatterproof cover
• Flow Velocity Range: ±0.021 m/s to 12.2 m/s (±0.07 ft/s to 40 ft/s)
• Accuracy: ±1% of reading from 0.46 to 12.2 m/s (1.5 to 40 ft/s); ±0.0046 m/s (±0.0015 ft/s) for velocities below 0.46 m/s (1.5 ft/s). Repeatability & Linearity: ±0.25%
• Display: White, backlit matrix — displays 5-digit flow rate with floating decimal,14-digit totalizer, relay status, operating mode, and calibration menu
• Power Input:
  • 100-240 V AC (50/60 Hz), 10 VA maximum
  • Optional: 9-32 V DC, 10 W maximum
• Analog Output: Isolated 4-20mA, 0-5 V, 1 kΩ load maximum
• Control Relays:
  • 2 Relays, form ‘C’ dry contacts rated 5 A SPDT; programmable flow alarm and/or flow proportional pulse
  • Optional: 4 additional (6 total), rated 5 A SPDT
• Data Logger: Built-in 128 MB data logger with USB output and Windows software. Capacity for approx. 26 million data points
• Operating Temp. (Electronics): -20 °C to 60 °C (-5 °F to 140 °F)
• Approximate Shipping Weight: 5.5 kg (12 lb)
• Approvals: CE, CSA, UL/EN 61010-1

Transducer Specification

• Pipe Diameter, Nominal:
  • SE16A: Recommended for 15 mm to 40 mm (0.5 in to 1.5 in), Suitable for 15 mm to 150 mm (0.5 in to 6 in)
  • SE16B: Recommended for 50 mm to 250 mm (2 in to 10 in), Suitable for 50 mm to 1,200 mm (2 in to 48 in)
  • SE16C: Recommended for 300 mm to 1,200 mm (12 in to 48 in), Suitable for 100 mm to 1,200 mm (4 in to 48 in)
• Pipe Materials:
  • Any metal or plastic sonic conducting material including carbon steel, stainless steel, ductile iron, concrete-lined ductile iron, cast iron, PVC, HDPE, PVDF, fiberglass, copper, brass, aluminum, and pipes with bonded liners including epoxy, rubber, and Teflon
• Operating Frequency:
  • SE16A: 2.56 MHz
  • SE16B: 1.28 MHz
  • SE16C: 640 kHz
• Operating Temperature: -40 °C to 150 °C (-40 °F to 300 °F)
• Transducer Mounting Kit:
  • SE16A: Includes stainless steel track with pipe clamps, built-in ruler, and coupling tape.
  • SE16B: Includes a set of stainless steel transducer brackets, clamps, alignment bar, and coupling tape.
  • SE16C: Includes set of stainless steel transducer brackets, clamps, alignment bar with a built-in ruler, and
    coupling tape.
• Transducer Cables: Triaxial, 7.6 m (25 ft) with BNC connectors and seal jackets (extendable up to 152.4 m (500 ft))
• Hazardous Locations:
  • Non-incendive for Class I, Div 2, Groups A, B, C, D
  • Optional: Intrinsically safe for Class I, Div 1, Groups C, D; Class II, Groups E, F, G; Class III; Encl. Type 4

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