P116 Ultrasonic Flowmeter
Portable Transit-time Ultrasonic Flowmeter
Applications and measurement
Portable flow checks at multiple points in a process without permanent installation. Transit-time measurement for water in carbon-steel, stainless-steel or PVC pipes, with a published clamp-on range of 25–1200mm.
The 16-hour rechargeable battery, 1G SD-card logging and handheld controls support temporary measurement and data collection.
About P116
Universal handheld transit-time meter with a dual-function push-button interface and ergonomic design.
- TVT technology.
- Low-voltage broadband pulse transmission with low power consumption and fewer hardware components.
- Clear, user-friendly menu selections. Daily, monthly and yearly totalized flow.
- Parallel positive, negative and net totalizers with scale factor (span) and 7-digit display; totalizing pulse and frequency output via relay and open collector.

Application and Installation Guidance
Measurement location
Select a fully developed flow profile in a pipe that remains full: a vertical pipe flowing upwards or a full horizontal pipe.
Provide the straight upstream and downstream lengths shown in the installation drawings. Keep the measurement-point temperature within the transducer limits and avoid excessive internal corrosion or scaling.
Technical Data, Dimensions and Wiring
Performance specifications
- Flow range
- ±0.03–±40 ft/s (±0.01–±12 m/s)
- Accuracy
- ±1% of measured value
- Repeatability
- 0.3%
- Pipe size
- Clamp-on: 1–48 in (25–1200mm)
- Fluid
- Water
- Pipe material
- Carbon steel, stainless steel, PVC
Function specifications
- Outputs
- OCT pulse: 0–5000Hz. Analog: 4–20mA, maximum load 750Ω.
- Communication
- RS485 MODBUS
- Power supply
- 11.1V rechargeable lithium battery; 16 hours continuous main-battery operation.
- Keypad
- Tactile keys
- Display
- 64×128 alphanumeric, backlit LCD.
- Temperature
- Transmitter: −10–50°C (14–122°F). Transducer specification: 0–80°C (32–176°F).
- Humidity
- Up to 99% RH, non-condensing.
- SD card
- 1G; ordering description states up to 512 days of data.
Physical specifications
- Transmitter
- NEMA13, IP54
- Transducer
- Encapsulated design, IP68 (specification).
- Transducer cable
- Standard 16ft (5m); custom length up to 30m in 5m increments.
- Weight
- Transmitter: approximately 1.0kg
- Transmitter dimensions
- 111 × 200 × 45mm
Configuration notes
- Transducer temperature
- CP036 ordering option: 0–50°C (32–122°F), whereas the general transducer specification states 0–80°C. Confirm the selected configuration.
- Display description
- The introduction describes a backlit colour display; the specification identifies a 64×128 alphanumeric backlit LCD.
Connections

Transmitter and Transducer Dimensions — mm

Transducer Installation Methods
V method: 50–400mm pipe. Z method: 25–1200mm pipe.


Installation Site Selection
Minimum straight lengths (upstream / downstream): 90° bend 10D / 5D; tee 50D / 10D; diffuser 30D / 5D; reducer 10D / 5D; valve 30D / 10D; vertical pipe 10D / 5D; pump 50D after the pump. D is pipe diameter.

Packaging
Carrying case; transmitter; transducer with scaled rack; pipe strips; grease coupling compound; battery charger.

Build your P116 ordering code
Example — Standard Model: P116-CP036-016
Handheld ultrasonic flowmeter with portable transducers and 5m cable.
