D116 Wall Mount Transit Time Water Flow Meter. Close-up of a pFlow D116 transit time flow meter with a digital display and keypad for settings.

D116 Wall Mount Transit Time Water Flow Meter diagram. Shows dimensions of the meter, upstream transducer, and downstream transducer.

D116 Wall Mount Transit Time Water Flow Meter wiring diagram. Close up of the D116's DC power, relay, OCT, transducer, 4-20mA, and RS485 connections.

D116 HD Wall Mount Transit Time Water Flow Meter

Name: New D116 HD Ultrasonic Flow Meter | Zedflo Australia
SKU: D116-1-CP037-030
Price: 1900.00 AUD
Availability: InStock

All new orders are supplied the new revised model D116 HD.
This wall mount ultrasonic flow meter (for measuring water flow) is clamped to the outside of the pipe with no need to cut into or stop the process.

‘In stock’ subject to prior sales. Contact us to confirm stock level before ordering.
If nil stock at time of order, lead time is typically ~3-4 weeks.

SKU: D116-1-CP037-030

$1,900.00 ex. GST

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New ‘D116 HD’ model replaces the original D116, new instruments supplied will be the new HD model as the original model was discontinued.

D116 wall mount ultrasonic flow meter features state of the art advanced non-invasive technology meaning there is no pressure drops, no moving parts, no leaks, and no risk of contamination. It is clamped to the outside of the pipe without the need to cut into or stop the process.

The D116 is designed using FPGA chip and low-voltage broadband pulse transmission, comparing with other traditional flow meters or ultrasonic flowmeters, it has distinctive features such as high precision, high reliability, high capability and low cost, this model is designed for measuring clean water

This flow meter is designed for a permanent wall mount operation for continuous flow measurement.

This flow meter offers a compact size built into a tough IP65 enclosure, so it is suitable for out door use.
The unique clamp-on design makes the installation very simple, requiring no special skills and only basic tools for mounting.

This model is priced very economically, but it does have some key limitations to be aware of:

Only for measurement of water, it cannot be configured for any other liquid
Only works with these specified pipe materials: Carbon steel, Stainless steel, PVC, Copper
Not suitable for pipes with a liner, liner parameters cannot be programmed.
There is no data logging on this model, but it does still have a re-settable totaliser
The max flow velocity it can measure is 5m/s, low compared to other models so just ensure your max flow velocity will fall within it’s measurement capability.

Suits a large range of pipe sizes, 1 set of transducer can be used on pipes in size range of approx 25-1200 OD (1″ to 48″)
- We recommend that this model best suits 40mm+ pipe sizes when mounted with the common ‘V mounting’ method
- However, the ‘N mounting’ method can be used for small pipe diameter measurement.
This model is suitable for measuring flow velocities of ±0.01~ ±5 m/s (±0.03 ~ ±16 ft/s)
Can be powered with 10 to 36VDC (power supply source not included, we can include a DC power plug pack at additional cost if required)
40 character, 2 line (20 x 2) lattice alphanumeric, backlit LCD.
16 keys with tactile action
The housing can be screwed directly to a wall or surface, a mounting template is included
Due to the non-invasive nature of clamp-on transducers, there is no pressure drops, no moving parts, no leaks, and no risk of contamination.
For measurement of water only

Performance Specifications
Flow range	±0.01~ ±5 m/s (±0.03 ~ ±16 ft/s)
Accuracy	±1% of measured value
Repeatability	0.3%.
Pipe Size	25mm~1200mm (1ʺ ~ 48ʺ inch)
Function Specifications
Outputs	Our standard model has these outputs: OCT output, Relay output, RS485, 4-20mA output Other variants are available to add either RS232 or an RTD input, please contact us for more information.
Power supply	10 to 36VDC (power supply source not included, we can include a DC power plug pack at additional cost if required)
Keypad	16 keys with tactile action
Display	40 character, 2 line (20 x 2) lattice alphanumeric, backlit LCD
Temperature	Transmitter: -10°c ~ 50°c (14°f ~ 122°f) Transducer: -0°c ~ 80°c (32°f ~176°f)
Humidity	0 to 99% RH, non-condensing
Physical Specifications
Transmitter	PC/ABS, IP65.
Transducer	Encapsulated design, IP68 Standard cable length: 9m Special order available up to 305m lengths
Weight	Transmitter: approximately 0.7kg Transducer: approximately 0.4kg

Common applications:

Water (Hot water, cooling water, potable water)
Industrial uses such as water treatment
Mining industry for various processes
Water fire suppression system testing
Pipeline leak detection and inspections
Flow measurement surveys

If you are not sure if this model is well suited to your needs, please send us an email and describe your application and maybe even a photo of your proposed measurement site and mounting area and we might be able to indicate if the meter may be suited or possibly recommend a different type if necessary.

Suited pipe materials:

You can select from the pre-configured pipe materials only: Carbon steel, Stainless steel, PVC, copper, PVC
If you have any other material, unfortunately this model will not suit, you may instead consider the next model up, which is the D118.

Cannot be used on pipes with liners:

This model cannot be used on pipes with a liner, if your pipe has a liner you may instead consider the next model up, which is the D118.

Suited liquids:

This model work’s only on clean water with little or no particles and entrained air bubbles, it may work with sea water as it’s very similar in sound speed to water but perhaps with some small accuracy penalty as it’s internal calculations are based on sound speed of water.
They will not work with too much suspended solids in the liquid, as a rough guide we typically advise around 5% suspended solids should be the cut off point, though it can vary between applications.
If you have any other liquid, you may instead consider the next model up, which is the D118.

General information:

This is a ‘transit time’ flow meter. Transit time works on the principle of sending a sound signal up stream and then downstream from a pair of sending and receiving transducers. It measures time shift with and against the flow in calculating flow rate.
When selecting a measurement site, it is important to select an area where the fluid flow profile is fully developed for an accurate measurement.
- Choose a section of pipe that is always full of liquid (signal does not pass through air), such as a vertical pipe with flow in the upward direction or a full horizontal pipe.
- On horizontal pipes it is best to mount the transducers on the side of the pipe. Avoid the top and bottom of the pipe to eliminate issue if air/gas has accumulated at the top of the pipe and sediment collected on the bottom of the pipe.
- You want to measure where flow is stable and laminar, avoid turbulent areas. Generally, for best results a straight pipe run is required 10 pipe Diameters upstream and 5 pipe diameters downstream, but the recommendations vary depending on the situation, the datasheets have a section on this “installation site selection”
You will need to know: Pipe outer diameter, pipe wall thickness, pipe material, you set these parameters in the flow meter and it will give you a transducer spacing which is the distance to separate the sensors on the pipe.
Included couplant (grease) is to be generously applied to the sensing area of the transducers, then you will need to mount the transducers on the pipe at that specified distance
These transducers typically need to be strapped on, the flow meter includes metal straps which can be used for mounting to smaller sizes up to approximately 300mm OD, for larger pipes we can offer a set of ratchet straps for a quick and easy mounting solution (additional cost)
Something else to note is ultrasonic flow meters are not ideally suited for intermittent flow duration’s (EG a pump powering for 20 seconds on and then flow off, or with diaphragm pumps for example)
- The reason is that the signal typically will take at least a few seconds to stabilise and display accurate readings.
- The flow meter has a ‘damping function’ (enabled by default) which will stabilize the flow display, a dampening factor of 3 to 10 seconds is recommended but could be set to 0 for it to much more quickly react to detected flow rate changes. It’s essentially an averaging filter.
- They are also not suitable for accurate low dosing, or custody transfer applications as they will “miss” some of the totalised flow while the signal attenuates and the flow measurement ‘ramps up’ to it’s measurement accounting for the dampening function setting.