TTFM 6.1 Transit-Time Flow Meter

The TTFM 6.1 Transit-Time Flow Meter from Pulsar Measurement accurately measures the flow rate of fluids in full pipes. This clamp-on, ultrasonic flow meter measures flow from outside a pipe with no contact with process fluid. It is easy to install and shutdown-free. Configuration is simple and a calibration certificate included.

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Advantages

Non-invasive flow measurement of “clean” fluids like water and chemicals
Different sizes available to measure 15 mm to 1,200 mm pipe diameters
Intuitive, quick setup menu for easy installation
Works on all common pipe materials
Interchangeable clamp-on transducers
Standard mounting hardware
Ideal for retrofits and new installations
No moving parts, so little-to-no maintenance required

TTFM 6.1 Transit-Time Flow Meter

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+27 21 518 1347

TTFM 6.1 Transit-Time Flow Meter Equipment Options:

Applications

Treated water
Raw water
Cooling water
Chemicals
DI/RO water

Specifications

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 (IP 66) polycarbonate with clear, shatterproof cover

Flow Velocity Range

±0.02 m/s to 12.2 m/s (±0.07 ft/s to 40 ft/s)

Accuracy

±1% of reading from 0.46 m/s to 12.2 m/s (1.5 ft/s to 40 ft/s); ±0.0046 m/s (±0.015 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 a USB output and Windows software. Capacity for approximately 26 million data points

Operating Temperature (Electronics)

-20 °C to 60 °C (-5 °F to 140 °F)

Approximate Shipping Weight

5.5 kg (12 lbs)

Sensor Specifications

Pipe Diameter (Recommended)

SE16A: 15 mm to 40 mm (0.5 in to 1.5 in)
SE16B: 50 mm to 250 mm (2 in to 10 in)
SE16C: 300 mm to 1,200 mm (12 in to 48 in)

Pipe Diameter (Suitable For)

SE16A: 15 mm to 150 mm (0.5 in to 6 in)
SE16B: 50 mm to 1,200 mm (2 in to 48 in)
SE16C: 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

TTFM 6.1 Transit-Time Flow Meter

Specifications

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 (IP 66) polycarbonate with clear, shatterproof cover

Flow Velocity Range

±0.02 m/s to 12.2 m/s (±0.07 ft/s to 40 ft/s)

Accuracy

±1% of reading from 0.46 m/s to 12.2 m/s (1.5 ft/s to 40 ft/s); ±0.0046 m/s (±0.015 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 a USB output and Windows software. Capacity for approximately 26 million data points

Operating Temperature (Electronics)

-20 °C to 60 °C (-5 °F to 140 °F)

Approximate Shipping Weight

5.5 kg (12 lbs)

Sensor Specifications

Pipe Diameter (Recommended)

SE16A: 15 mm to 40 mm (0.5 in to 1.5 in)
SE16B: 50 mm to 250 mm (2 in to 10 in)
SE16C: 300 mm to 1,200 mm (12 in to 48 in)

Pipe Diameter (Suitable For)

SE16A: 15 mm to 150 mm (0.5 in to 6 in)
SE16B: 50 mm to 1,200 mm (2 in to 48 in)
SE16C: 100 mm to 1,200 mm (4 in to 48 in)

Pipe Materials

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

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

Options

Sensor Variations (Recommended pipe diameters)

SE16A: 15 mm to 40 mm (0.5 in to 1.5 in)
SE16B: 50 mm to 250 mm (2 in to 10 in)
SE16C: 300 mm to 1,200 mm (12 in to 48 in)

Industrial Automation Protocols

Modbus RTU via RS-485 or HART (field selectable)

Transducer Cables

15.2 m (50 ft) triaxial with BNC connectors and seal jackets
30.5 m (100 ft) triaxial with BNC connectors and seal jackets

Enclosure Heater

Thermostatically controlled to -40 °C (-40 °F); recommended for temperatures below 0 °C (32 °F)

Sunscreen

Enclosure sunscreen for outdoor installations

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