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TTFM 6.1 Transit Time Flow Meter

Updated:2025-03-13

Brand: Pulsar
Model: TTFM 6.1
Description: The TTFM 6.1 Transit-Time Flow Meter is ideal for treated clean water, raw water, cooling water, chemicals, hydraulic oil, low-conductivity water, water/glycol solutions, and diesel and fuel oils. The
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Product Details

TTFM 6.1 Transit Time Flow Meter Description：

User's Manual Datasheet

The TTFM 6.1 Transit-Time Flow Meter is ideal for treated clean water, raw water, cooling water, chemicals, hydraulic oil, low-conductivity water, water/glycol solutions, and diesel and fuel oils. The unit works by measuring the time-of-flight difference for ultrasonic sound pulses transmitted from one transducer to another. The time between transmitted and received signals is measured by the flow meter. Mount the TTFM 6.1 Transit-Time Flow Meter ultrasonic transducers on the outside of a pipe and use the built-in 5-button keypad to enter the pipe material, outer diameter, wall thickness, and fluid type. The TTFM 6.1 will display the correct transducer separation distance and mounting method.

With the TTFM 6.1 Transit-Time Flow Meter, you never need to be an expert in non-contacting flow measurement to get the best results in your application. Let us help you accurately measure the flow rate of relatively clean, non-aerated fluids in full pipes.

Easy to Choose

With only 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 easiest choice to specify for your next clean-liquid flow application.

Easy to Use and 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 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 directly 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 cost-conscious calibration services and fast turnaround service.

Features

Three easy-to-select transducer options covering 15 mm to 1,200 mm nominal pipe diameters.

Transducers work on all common pipe materials.

Standard mounting hardware makes novice installers look like experts.

Transducers simply strap to the outside of the pipe, meaning no wear and tear, and no shutdown to install.

Easy-to-contact and knowledgeable staff is here to help you before, during, and after installation.

Analog, pulse, and serial communication options to meet your specific application needs.

Standard 26 million point data logger and free Logging Software make data management and reporting fast and easy.

All transducers are approved for use in hazardous locations.

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	Certified Non-incendive for Class I, Div 2, Groups A, B, C, D Optional: Certified Intrinsically safe for Class I, Div 1, Groups C, D; Class II, Groups E, F, G; Class III; Encl. Type 4 Optional: Certified Intrinsically safe for sensor mounting in ATEX.IECEx Zone 0, Ex ia IIB T4 Ga, hazardous location