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Gas Rotary (Roots) Flow Meter-SN56

Product introduction

SN56 series gas waist wheel (roots) in the advanced concept of flow sensor using aviation technology combining the theory of fluid mechanics, electromagnetism and developed on its own set of temperature, pressure, flow sensor, and in the integration of intelligent flow totalizer.especially for a new generation of high precision, high reliability gas precision measuring instrument, has a good performance of low and medium voltage measurement, With a variety of signal output modes, the SN56 series gas waist (rotts) flow sensor has become a particularly excellent commercial trade metering instrument capable of accurately measuring gas accumulation.

Main Feature Dimension Figure Main Technical Parameters Flowmeter Mounting Dimensions Flow Meter Specifications, Basic Parameters And Performance Indicators Selection Table

- wide range: according to different specifications, the highest range can reach 1:226.
- Low starting flow: according to different specifications, the lowest starting flow can reach 0.04m3/h.
- High precision, high repeatability: ordinary class up to 1.5. High level can reach 1.0, 0.5; Long-term accuracy is not affected by the medium, long-term operation, stable accuracy.
- Small pressure loss: according to different specifications, the pressure loss is 0.08kpa - 0.58kpa.
- high integration, low power consumption: the use of advanced computer technology and high performance integrated chip, the machine has powerful functions, superior performance.
- Compact structure: pressure sensor, temperature sensor, flow sensor are all built in, make the structure more compact.
- digital pressure and temperature sensor: digital temperature sensor and digital pressure sensor configuration, separate calibration and verification, easy to replace, maintenance and use.
- Segment correction: according to the flow frequency signal, the instrument coefficient can be automatically divided into six sections for linear correction, improve the wide range accuracy of the instrument.
- complete data storage function: the use of E2PROM data storage chip, save user parameters, manufacturer
parameters, timely data preservation function, can prevent the sudden power loss of data, in the blackout state, the internal parameters can be permanently saved.
- Basic output complete: intelligent flowmeter with base meter pulse output, working or standard condition pulse signal output, and calibration pulse output. RS485 interface output, can also output 4 ~ 20mA standard analog signal
according to user needs.
- Data traceability management: real-time database, query and analysis through RS-485 communication interface.
- GPRS real-time management system: in this series, B-type meter with GPRS transmission function, can be online, long timing, fixed point transmission function, monitoring instrument, control valve, pipeline pressure, gas alarm and other data, extremely easy to set up GPRS wireless network system.

Meter diameter 25mm、40mm、50mm、80mm、100mm、150mm
nominal pressure 0.6MPa
compensation way Double temperature and pressure compensation
output signal Pulse, 4-20mA, RS485, IC card signal
communication
protocol
MODBUS-RTU、HART (customize)
power supply 1、External 24VDC DC power supply.
2、Battery powered, 3.6 lithium battery.
service conditions Medium temperature :-20°C-80°C    Ambient temperature: -30x-60x
Relative humidity :5%-90%    Atmospheric pressure :86kPa-106kPa
Protection grade IP65、IP67

anti-hazard

classification

Ex d IIC T6Gb
applicable medium Natural gas, compressed air, nitrogen and other low flow rate gas
turn down 1 : 20-1: 50
   precision 1.0、1.5
texture aluminium alloy

product standard

JB_T 7385-2015

installation direction

Vertical installation, up in and down out.
nominal diameter
DN
A C W H flange
(mm) (mm) (mm) (mm) C1 n-d
25  235  90  105  145  φ85 4-M12
40  307  120  105  145  φ 110 4-M16
50  385  140  185  170  φ 125 4-M16
50  420  156  185  170  φ 125 4-M16
80  460  175  185  170  φ 160 8-M16
80  490  190  185  170  φ 160 8-M16
80  485  185  235  250  φ 160 8-M16
100  565  230  235  250  φ 180 8-M16
100  655  275  235  250  φ 180 8-M16
150  640  293  450  460  φ240 8-M20
150  705  352  450  550  φ240 8-M20
nominal diameter
DN( mm )
turn down flow-rate range
( m3/h )
Startup flow rate
( m3/h )
When Qmax
The pressure loss
Pa
Maximum
working
MPa pressure
nominal
pressure
MPa
25  20:1 1-20 0.07  110  0.4  1.6MPa
40  40:1 1-40 0.06  140 
50  30:1 2-60 0.07  120 
50  40:1 2-80 0.07  160 
80  35:1 3-100 0.06  170 
80  50:1 3-150 0.05  150 
80  50:1 4-200 0.15  180  0.40.6
100  80:1 4-300 0.12  200 
100  90:1 5-450 0.11  400 
150  80:1 8-650 0.65  560 
150  90:1 11-1000 0.8  600 
SN56- A A B4 A D specification
SN56-             SN56 series gas waist wheel (Roots) flowmeter
  A           SN56 series gas waist wheel (Roots) flowmeter
  B           PD-SO
  C1           Economical stand-alone version: IC card gas control
  C2           Precision stand-alone version: IC card gas control (optional,
  C3           Precision network version: IC card gas control (optional, see
    A         Flow range: 1-20m3/h (caliber: DN25)
    B         Flow range: 1-40m3/h (caliber: DN40)
    C         Flow range: 2-60m3/h (caliber: DN50)
    D         Flow range: 2-80m3/h (caliber: DN50)
    E         Flow range: 3-100m3/h (caliber: DN80)
    F         Flow range: 3-150m3/h (caliber: DN80)
    G         Flow range: 4-200m3/h (caliber: DN80)
    H         Flow range: 4-300m3/h (caliber: DN100)
    I         Flow range: 5-450m3/h (caliber: DN100)
    J         Flow range: 8-650m3/h (caliber: DN150)
    K         Flow range: 11-1000m3/h (caliber: DN150)
            4-20 ma output
      C       pulse output
      R       RS485 output
      CR       Equivalent pulse output +RS485 output
      M       MODBUS-RTU( customization )
      H       HART( customization )
        B4     Pressure resistance: 4bar, selection B4
        B...     Custom compression
          A   Accuracy: grade 1.0
          B   Accuracy: Level 1.5
            D External 24VDC DC power supply
            C Battery powered, 3.6 lithium battery
* The selection table is only available for parameter selection, and the corresponding code is delivered.
Shanghai Kayuan Electronic
Technology Co., Ltd.
Shanghai Kayuan Electronic Technology Co., Ltd is an enterprise specializing in the production and R&D of industrial fluid sensors and controllers. Its main products include switches and sensors for flow, pressure, temperature, and liquid level. In 2008, our assembly plant was established in Shanghai, China, to produce the PAKU series of products. We adopt advanced technology and manufacturing processes across the board. With our professional design and production technology, comprehensive product lines, excellent quality, and sales network services, we can not only provide users with timely and professional technical support but also offer high - quality one - stop services. The company has set up various departments such as the purchasing department, R & D department, quality management department, finance department, sales department, after - sales department, general office, laboratory, archive room, calibration workshop, production workshop, inspection area, storage area, shipping area, and a tea break room, aiming to provide products of excellent quality and sincere services. We adhere to the customer - centric concept of creating value for customers. According to the industry needs of customers, we continuously update technology and optimize services, aiming to become a leader in the field of process automation. PAKU products are now widely used in different industries, including automation complete sets of equipment, petroleum equipment, chemical equipment, power equipment, welding equipment, steel equipment, metallurgical equipment, automobiles, and water treatment. We have served many customers at home and abroad, and our products are sold to countries such as Canada, the United States, Brazil, Indonesia, Vietnam, Thailand, and Russia. In the increasingly competitive global market in the future, PAKU will, as always, serve a wide range of domestic and foreign customers with excellent quality, reasonable and competitive prices, on - time delivery, and perfect after - sales service. We welcome extensive cooperation with OEM and ODM customers.
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