DMTFP Portable Ultrasonic Flowmeter

➡️Product description

DMTFP Portable Ultrasonic Flowmeter

DMTFP Portable Ultrasonic Flowmeter

1. Advanced DSP and MULTIPULSE™ Technology
2. 40-hour battery (rechargeable), integrated backlit display with 4 lines, all housed in a rugged, waterproof enclosure.
3. Cost-effective SD card data logger function with up to 8GB capacity. The flowmeter provides versatile event logging and rate measurement, with data that can be printed, recorded, or transferred to a computer for analysis.
4. Reliable for both clean and slightly dirty liquids.
5. Lightweight and easily portable.
6. Various outputs (for flow rate) including 4-20mA, frequency, RS232, and data logger.
7. Optional BTU heat flow function with input and output temperature indicators and heat flow rate measurement. Includes temperature sensors for total heat flow display.

Series DMTFP Portable

The DMTFP Series Portable Transit Time Ultrasonic Flowmeter is a state-of-the-art universal transit time flowmeter that uses MultiPulse™ technology and low-voltage wideband pulse transmission. This advanced, non-invasive flow measurement technology offers unique measurement capabilities with precision, versatility, ease of installation, and reliability. While primarily designed for clean liquids, the flowmeter can also reliably measure liquids containing suspended solids or air in reasonable quantities.

Ideal for short or long-term flow measurement surveys in full pipe liquid systems and for verifying calibration of permanently mounted flowmeters.

Applications:

• Water (hot water, potable water, cooling water, seawater, etc.)
• Petroleum products
• Chemicals, including alcohols, acids, etc.
• HVAC and energy measurement systems
• Beverage, food, and pharmaceutical processing
• Secondary sewage, wastewater treatment, etc.
• Power plants (nuclear, thermal, and hydroelectric), heat energy recovery feed water.
• Metallurgy and mining applications
• Pipeline leak detection, inspection, monitoring, and collection

Measurement Principle

The DMTF transit time flowmeter uses ultrasonic transmitters and receivers, utilizing two transducers. The transducers are clamped to the outside of a closed pipe at a specific distance apart. When mounted, the transducers can be oriented in various configurations: ultrasonic waves may pass through the pipe four times (Z-method), or twice (V-method), or just once if the pipe edges are mounted accordingly. The mounting method is selected based on pipe and liquid characteristics. During operation, the flowmeter transmits ultrasonic signals with both transducers, receiving amplified signals first in the downstream direction and then in the upstream direction (Figure 1). Due to the faster upstream flow, the time difference (Δt) will occur. When there is no flow, the time difference (Δt) is zero. Thus, knowing the time difference for both upstream and downstream directions, flow speed (V) and flow volume (Q) can be calculated using the following formula:

• V = K * D * t △
• V: Liquid velocity
• K: Constant
• D: Distance between the two transducers
• Δt: Time differenceoflight

DMTFP Portable Ultrasonic Flowmeter Brochure

Portable DMTFP Series

The DMTFP Series Portable Transit Time Ultrasonic Flowmeter is a state-of-the-art universal transit time flowmeter that utilizes advanced MultiPulse™ technology and low-voltage wideband pulse transmission. This non-invasive flow measurement technology offers unique accuracy, versatility, ease of installation, and reliability. Although primarily designed for clean liquids, the flowmeter can also reliably measure liquids containing suspended solids or air in moderate amounts. The DMTFP is ideal for both short-term and long-term flow measurement surveys in full-pipe liquid systems and for verifying the calibration of permanently installed flowmeters.

Measurement Principle

The DMTF transit time flowmeter uses ultrasonic transmitters and receivers, employing two transducers that function together. The transducers are clamped to the outside of a closed pipe at a specific distance apart. The transducers can be mounted in different orientations: V-Method: Ultrasonic waves pass through the pipe twice. Z-Method: Ultrasonic waves pass through the pipe four times. W-Method: Ultrasonic waves pass through the pipe only once, with the pipe edges being part of the measurement. The choice of mounting method depends on the pipe and liquid characteristics. During operation, the flowmeter transmits ultrasonic signals with both transducers and first receives amplified signals in the downstream direction and then in the upstream direction (see Figure 1). Due to the faster flow in the upstream direction, there will be a time difference (Δt) in the flight time. When there is no flow, the time difference (Δt) is zero. Therefore, by knowing the flight times in both directions, we can calculate the flow speed (V) and flow volume (Q) using the following formula: V = K * D * Δt V: Liquid velocity K: Constant D: Distance between the two transducers Δt: Time difference of flight

Data Logging and Software Program

Specifications:

1. Memory Capacity: SD card-based data logging with capacities of 512MB, 1GB, 2GB, 4GB, or 8GB. Typically, 1GB can store data for 5 years with 5-minute intervals.
2. SD Card: Easy data reading by removing the SD card (compatible with Dynameters Data Logger) and using it with data logger software for analysis.
3. Data Reporting: Includes data report and data curve functions.
4. Users can edit and print Excel reports on a PC.
5. Functions analysis.
6. Logging Parameters: The data logger tracks parameters such as flow rate, velocity, positive total flow, negative total flow, net total flow, total heat flow, and heat flow rate. If users need additional parameters, they can consult the provider. Users can also remove unnecessary parameters from the data table in Excel and then print the table.
7. We offer different types of data loggers, including: - Dedicated Models: Such as DMTFB, DMTFC, DMTFD, DMTFF, and DMHF. - Portable Series:For the DMTFP Series. - Handheld Series: For the DMTFH Series.