One-piece Tubular Ultrasonic Heat Meter
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Name：One-piece Tubular Ultrasonic Heat Meter
Model：LRF-2000F-R
General Introduction：
LRF-2000F-R ultrasonic heat meter is to connect the motherboard with a 20-wire, 4-key parallel port keyboard display and package it into a sealed case. The online display and operation sensor can be divided into external clamp-type inserted tube segment, which has the advantages of high precision, wide range, no pressure loss and simple installation.
Features:
High accuracy
Better than ±1%
Working Conditions:
High accuracy
Better than ±1%
Wide measuring range
Several types transducer for selection, pipe size from Dn15mm to Dn2000mm
High Reliability
Adopt low voltage, multi-pulse technology to improve accuracy, useful life and reliability.
Strong Anti-interference
Dual-balance signal differential receiver/driver circuit to avoid interference of converter,
TV tower, high voltage line etc.
Powerful Recording Function
Automatically record the following data:
1. The totalizer data of the last 512 days/128 months/10 years
2. The time and corresponding flow rate of the last 64 times of power on and off events
3. The working status of the last 32 days
Far Transmission Distance, Easy for Networking
RS485 support wireless network, connect GPRS module to accomplish wireless
transmission .
Support Heat Measurement
Connect the temperature transducer ,can finish the heat/energy measurement
Working Conditions:
| Transmitter | Transducer | |
| Protection grade | IP68 | IP68 |
| Temperature | -20~60℃ |
-30~160℃
|
π type Pipe Transducer：
Threaded Connection
| Norminal Diameter（DN） | Pressure Level（P） | Length(L) | Connecting Thread | Thread Effective length | Standard |
| DN15 | 2.5 | 320 | G3/4B | 18 | GB/T7307-2001 |
| DN20 | 2.5 | 360 | G1B | 15 | |
| DN25 | 2.5 | 390 | G11/4B | 16 | |
| DN32 | 2.5 | 450 | G11/2B |
22.5
|
Flanged Connection
| Norminal Diameter （DN） |
Pressure Level （P） |
Length L |
Flange Dimension | Standard | ||||||
|
Outer
Diameter
D |
Diameter of
center hole
in bolts
D1 |
Diameter of
bolt hole
×Quantity
Φ×n |
Diameter of
Sealing
surface
D2 |
Flange
thicknes
|
Bolting
Specificatio
|
|||||
| c | f | |||||||||
| DN15 | 2.5 | 320 | 95 | 65 | 14×4 | 46 | 14 | 2 | M12×50 | GB/T9119-2000 |
| DN20 | 2.5 | 360 | 105 | 75 | 14×4 | 56 | 16 | 2 | M12×50 | |
| DN25 | 2.5 | 390 | 115 | 85 | 14×4 | 65 | 16 | 2 | M12×60 | |
| DN32 | 2.5 | 450 | 140 | 100 | 18×4 | 76 | 18 | 2 |
M16×60
|
|
Standard Pipe Transducer：
| Norminal Diameter （DN） |
Pressure Level （P） |
Length L |
Flange Dimension | Standard | ||||||
|
Outer
Diameter
D |
Diameter of
center hole
in bolts
D1 |
Diameter of
bolt hole
×Quantity
Φ×n |
Diameter of
Sealing
surface
D2 |
Flange
thicknes
|
Bolting
Specificatio
|
|||||
| c | f | |||||||||
| 40 | 1.6 | 300 | 150 | 110 | 18×4 | 84 | 18 | 2 | M16×60 | GB/T9119-2010 |
| 50 | 1.6 | 300 | 165 | 125 | 18×4 | 99 | 20 | 2 | M16×70 | |
| 65 | 1.6 | 300 | 185 | 145 | 18×4 | 118 | 22 | 2 | M16×70 | |
| 80 | 1.6 | 225 | 200 | 160 | 18×8 | 132 | 20 | 2 | M16×70 | |
| 100 | 1.6 | 250 | 220 | 180 | 18×8 | 156 | 22 | 2 | M16×80 | |
| 125 | 1.6 | 275 | 250 | 210 | 18×8 | 184 | 22 | 2 | M16×80 | |
| 150 | 1.6 | 300 | 285 | 240 | 22×8 | 211 | 24 | 2 | M20×80 | |
| 200 | 1.6 | 350 | 340 | 295 | 22×12 | 266 | 26 | 2 | M20×90 | |
| 250 | 1.6 | 450 | 405 | 355 | 26×12 | 319 | 28 | 2 | M22×90 | |
| 300 | 1.6 | 500 | 460 | 410 | 26×12 | 370 | 32 | 2 | M22×90 | |
| 350 | 1.0 | 550 | 500 | 460 | 23×16 | 428 | 28 | 4 | M20×80 | |
| 400 | 1.0 | 600 | 565 | 515 | 25×16 | 482 | 30 | 4 | M22×90 | |
| 450 | 1.0 | 700 | 615 | 565 | 25×20 | 532 | 30 | 4 | M22×90 | |
| 500 | 1.0 | 800 | 670 | 620 | 25×20 | 585 | 32 | 4 | M22×90 | |
| 600 | 1.0 | 1000 | 780 | 725 | 30×20 | 685 | 36 | 5 | M27×110 | |
| 700 | 0.6 | 1100 | 860 | 810 | 25×24 | 775 | 32 | 5 | M22×90 | |
| 800 | 0.6 | 1200 | 975 | 920 | 30×24 | 880 | 32 | 5 | M27×100 | |
| 900 | 0.6 | 1300 | 1075 | 1020 | 30×24 | 980 | 34 | 5 | M27×100 | |
| 1000 | 0.6 | 1400 | 1175 | 1120 | 30×28 | 1080 | 36 | 5 | M27×110 | |
Transmitter：
Temperature sensor：
Installation diagram：
| Items | Performance and Parameter | |
| Convertor | Principle | Transit-time ultrasonic flowmeter |
| Accuracy | Flow：±0.5% Heat：±1.0% |
|
| Operation | Support 4 keyboards magnetic bar/4 touch keyboards/ Simulation keyboard software | |
| Signal Output | 1 way 4~ 20mA output, electric resistance 0~ 1K，accuracy0. 1% | |
| 1 way OCT pulse output( Pulse width 6 ~ 1 0 0 0 ms，default is 2 0 0 ms) | ||
| 1 way Relay output | ||
| Signal Input | 3 way 4~ 20mA input, accuracy 0. 1%，acquisition signal such as temperature, press and liquid level | |
| Connect the temperature transducer Pt100, can finish the heat/energy measurement | ||
| Data interface | Insulate RS485 serial interface, upgrade the flow meter software by computer, support the MODBUS | |
| Special Cable | Twisted-pair cable, generally, the length under 50 meters; Select the RS485 communication. The transmission distance can over 1000m | |
| Pipe Installation Condition | Pipe Material | Steel, Stainless steel, Cast iron, Copper, Cement pipe, PVC, Aluminum, Glass steel product, liner is allowed |
| Pipe Diameter | 15~6000mm | |
| Straight length pipe | Transducer installation should be satisfied: upstream10D, downstream 5D, 30D from the pump. | |
| Measuring Medium | Type of Liquid | Water (hot water, chilled water, city water, sea water, waste water, etc.); Sewage with small particle content; Oil (crude oil, lubricating oil, diesel oil, fuel oil, etc.); Chemicals (alcohol, acids, etc.); Plant effluent; Beverage, liquid food; Ultra-pure liquids; Solvents and other liquids |
| Temperature | -30~160℃ | |
| Turbidity | No more than 10000ppm and less bubble | |
| Flow rate | 0~±10m/s | |
| Working Environment | Temperature | Flow transducer:-20~60℃ Convertor：20~60℃ |
| Humidity | Convertor: 85% RH; Flow Transducer: can measure under water,water depth≤2m(After wiring and filling glue) | |
| Power Supply | DC8~36V or AC85~264V（optional） | |
| Power Consumption | 1.5W | |