RBHFM-EF Fixed type Clamp-on Ultrasonic Flowmeter It is a wall-mount,clamp-on type ultrasonic flow meter which uses the transfer time technology.Designed using FPGA chip and low-voltage broadband pulse transmission.
Transit-time meters use a pair of transducers. Both transducers act as transmitters and receivers of these sound wave signals. Sound waves moving in a fluid carry faster when traveling in the fluid flow direction (downstream) and slower when traveling against the fluid flow (upstream). If there were no fluid flow, the times would be identical. This time difference is measured, and from that, a fluid velocity is calculated. With the area of the pipe and fluid velocity known, the meter calculates a volumetric flow rate. If the fluid density is also known, a mass flow rate can be calculated as well.
Transit-time meters are the more versatile of the two types. They are capable of metering liquids, gases and steam. However, typically a single meter will only work with one of these fluid types. Transit-time liquid meters require that the liquid have minimal amounts of particulate solids or entrained bubbles as they can interfere with the sound wave signal.
RBHFM-EF Fixed type Clamp-on Ultrasonic Flowmeter
RBHFM-EF Fixed type Clamp-on Ultrasonic Flowmeter Specification:
RBHFM Fixed Clamp-on Ultrasonic Flowmeter | |
Flowrange | ±0.09ft/s~±16ft/s(±0.03m/s~±5m/s) |
Accuracy | ±1% of measured value |
Repeatability | 0.2% of measured value |
Linearity | ±1% |
Pipesize |
1"to 48"(25mmto1200mm). Pipe size under1”is an option |
Fluid | Water |
Function | |
Outputs | Analog output: 4~20mA, max.load 750Ω. |
Pulse output: 0~10KHz | |
Communication | RS232/RS485 Modbus |
Powersupply | 10~36VDC/1A |
Display | 240*128backlit LCD |
Temperature | Transmitter:-14℉~140℉(-20℃~60℃) |
Transducer:-40℉~176℉(-40℃~80℃,standard) | |
Humidity | Upto99%RH,non-condensing |
Physical | |
Transmitter | PC/ABS, IP65 |
Transducer | ABS, IP68 |
Encapsulated esign | |
Double-shielded transducer cable | |
Standard/maximum cable length:30ft/900ft(9m/274m) |
The RBHFM-EF Fix Type Transit time Ultrasonic Flow/Heat Meter Model Selction | ||||||||
RBHFM-EF | Code | Type of Transmitter | ||||||
Accuracy: 1% | F | Ultrasonic Flow Meter | ||||||
H | Ultrasonic Energy/BTU Meter function( RTD) | |||||||
RBH Type of transducers(Pipe range: DN25-1200mm) | ||||||||
C1 | Clamp-on, IP68. Operating temperature: -40℉ ~ +176℉(-40℃ ~ +80℃) | |||||||
C2 | Clamp-on, IP68. Operating temperature: -40℉ ~ +266℉(-40℃ ~ +130℃) | |||||||
P1 | Insertion, IP68. Operating temperature: -40℉ ~ +266℉(-40℃ ~ +130℃) | |||||||
Output | ||||||||
1 | OCT, Relay,RS232/485, 4-20mA | |||||||
2 | OCT, Relay,RS232/485, 4-20mA,RTD | |||||||
Transducers cable length | ||||||||
5 | D series type of cable Standard 5m (16ft). | |||||||
X | XX is the length you need for cables, Maximum lengthen to 276m. | |||||||
Temperature sensor-Pt1000 | ||||||||
N | Without | |||||||
1 | A pair of clamp on PT1000 sensor 9m | |||||||
Datalogger | ||||||||
N | Without | |||||||
1 | With SD card | |||||||
Power | ||||||||
D | 10~36VDC | |||||||
A | 90 to 245 VAC | |||||||
Remark: Model selection sample: | ||||||||
1. Standard configuration: RBHFM-EF-F-C1-15NND RBHFM series Fixed Ultrasonic Flow Meter , C1 type transducer, -40℃ ~ +80℃, IP68 5m cables. Without tenperature sensor and datalogger |
The RBHFM-EF Fix Type Transit time Ultrasonic Flow/Heat Meter Application:
Magmeters
Ultrassonic Flow Meter
Coriolis, Thermal Mass Flow Meter
Other Process Instrument