JCSZ-Series Double-Rotator Flowmeter

JCSZ-Series Double-Rotator Flowmeter is a positive displacement meter utilized in the most demanding applications requiring accuracy, long life and ruggedness. It features two precisely machined rotating members known as helical rotors which rotate and mesh within the meter’s interior housing in order to form a measuring chamber of known volume which may be used to accurately determine volumetric flow rate as a function of the rotors’ velocity. As liquid enters the intake of the measurement element, two finely timed rotors divide the liquid into precise segments of known volume and return those segments to the flowing stream. During this transition, the rotation of the two rotors is directly proportional to volumetric throughput. Volume indication is determined by mechanical output gearing leading to electronic or mechanical  registration devices.

JCSZ-Series Double-Rotator Flowmeter is a type of precise instrument measuring and controlling liquid flow in the pipeline.

It features:

  • high measurement precision
  • smooth running
  • free of pulsation
  • low noise
  • long service life
  • excellent adaptability to viscosity

The product has been widely used in various fields such as petroleum, chemical, metallurgy, electric power, shipping, traffic, dock, mine, thermal power, and foodstuff industries etc.. It is especially suitable for commercial trade measurement for crude oil, high condensation oil, crude oil with high water content, petroleum products, foodstuff and chemical solutions as well as measuring management and control of engineering automation. The codes and characters displayed on the flowmeter can be directly read locally. The photo-electric pulse converter equipped can output electric pulse(current) signals to the displaying instrument and computer for handling. Thus, the flow in the pipeline can be remotely controlled.

Application

Nominal Dia. (mm) 8~400
Accuracy ±0.05%,±0.1%, ±0.2% and ±0.5%
Pressure loss 0~1000mPa.s<80Kpa  1000~20000mPa.2<150KPa
Nominal pressure 1.6, 2.5, 4.0, 6.4 MPa
Temperature range -20°C ~ +80°C  +80°C ~ +150°C  +150°C ~ +250°C
Media viscosity 0~20000mPa.s
Ambient temperature -40°C ~ +70°C
Connected flange Can be custom-made
Photoelectric pulse(current)converter II 2 G Ex d IIB T6  ATEX approved
Electronic meterhead Ex d IIB H2 T2~T6 with NEPSI, GOST and IECEX( listing)
 

 

 

Register

MOD. M mechanical counter with 5 large figures, 8 digits non reset type totalizer, 5 figures resetable through single handle (for DN40mm to DN400( 1-1/2” to 16”) only)
MOD. J mechanical counter with 6 fugures non reset type totalizer ( for DN8mm to DN400mm)
MOD.D1 Explosion-proof digital totalizer and flow indicatorWith option RS495(Modbus RTU), Pulse and/or 4 to 20mA output .                                      Ex d IIB H2 T2~T6 with NEPSI, GOST and IECEX( listing) approved

JCSZ -Bi-rotator Flowmeter is a positive displacement meter utilized in the most demanding applications requiring accuracy, long life and ruggedness. It features two precisely machined rotating members known as helical rotors which rotate and mesh within the meter’s interior housing in order to form a measuring chamber of known volume which may be used to accurately determine volumetric flow rate as a function of the rotors’ velocity. As liquid enters the intake of the measurement element, two finely timed rotors divide the liquid into precise segments of known volume and return those segments to the flowing stream. During this transition, the rotation of the two rotors is directly proportional to volumetric throughput. Volume indication is determined by mechanical output gearing leading to electronic or mechanical  registration devices.

The Principle of JCSZ-Series Flowmeter

Dimension

Wiring of JCSZ -Bi-rotor Flow Meter

Size DN8mm-DN25mm(1/4”-1”)

Item Name
1 Back Cover
2 Wiring terminal
3 Cable gland
4a Cable
4b End cap
5 Grounding screw
6 Battery box

wiring terminal of transmitter

 

Wiring of JCSZ -Bi-rotor Flow Meter

Size DN40mm-DN400mm(1-1/2”-16”)

Item Name
1 Back Cover
2 Wiring terminal
3 Cable gland
5 Grounding screw
6 Battery box
7 Screw

wiring terminal of transmitter (2)

  • The flow meter mounting direction must be continent for your view and cooperation.
  • Flush the piping assembly.

standard installation

14 standard installation

  • After flushing, remove the short pipe section from the pipeline and install the meter in place, exercising care to avoid any pipe strain on the meter.
  • The meter must be installed on the discharge side of the pump.
  • If the meter is to be used under tank head, give a head greater than the pressure losses of the piping system, strainer, meter, and other associated equipment.
  • The flow direction arrow indicated on the meter body should point in actual direction of flow.
  • The strainer should be located upstream of, and in close proximity of the meter.
  • Since the sensor in the JCSZ -bi-rotor flowmeter detects the changes in magnetic flux density, it must be isolated from the influence of external magnetic fields. In order to minimize the influence of external magnetic fields, select an installation location at least 5 meters from existing power equipment and conductors – potential sources of creating large magnetic and electric fields, such as motors and generators.
  • If electrical heating is considered, consult the factory.
  • If heat retention is desired, do not allow lagging material to cover up the meter adapter and register assembly.

Other Related Products

FAQ & Trouble Shooting for JCSZ-Series Double Rotator Flowmeter

Trouble shooting for electronics:

No. Description Method
01 No display. 1. Renew the battery and check if the voltage <3V. If so replace it.

2. Check the circuit if it’s short-circuited.

02 There is flow in the pipe but the display value is unchanged. 1. To check if the flowmeter is blocked. If so, take it down to clean. If no block, check the settings of the parameters according to the user manual.

2. If the parameters are correct, disassemble the counter, connect the signal input part of counter with another signal source (VH-H≤5V) to check if the counter can work. If yes, there is something wrong with the sensor, otherwise, contact factory for repair. Note: pay attention to the connection of signal line’s cathode and anode.

03 No pulse output or inaccurate signal output. 1. Check the wiring according to the illustration in II.

2. Check the compatibility of pulse equivalent between the flowmeter and secondary instrument.

3. Check the pulse frequencies and amplitudes between flowmeter and secondary instrument/system using oscillograph to confirm they are suited.

04 No 4-20mA output or no precise 4-20mA output. 1. Check the wiring according to the illustration in II. If the connection is incorrect, please contact the factory.

2. If there is current output, please check if the set max. flowrate in secondary instrument or system is same with that of the flowmeter.

05 RS485 communication can no be connected. 1. Check the wiring according to the illustration in II.

2. Check if it’s powered with 24V battery and if the wiring is correct. If so, please contact the factory.

Trouble Cause Solution
(1) The measured liquid fails to pass through the flowmeter, and the meter head fails to count. (1) Filter has been jammed.

(2) The foreign matter has entered  measuring chamber(e.g.: welding rod, wire, plastic, stone), causing the rotator blocked.

(1) Clean the filter.

(2) Open the flowmeter,  eliminate the foreign matter, repair the rotator surface, inspect the mesh, and replace the damaged part.

(2) The noise is loud when the flowmeter  works, and the accuracy is influenced gradually. (1) Bearing attrition.

(2) The thrust bearing wears out, and the rotator shaft sinks so that the rotator end surface scratches mutually with the up and down  cover boards.

(1) Replace the bearing.

(2) ①Adjust the adjustable bolt.

②Inspect whether thrust bearing, rotator shaft and adjustable bolt are loose, then fasten if necessary.

③Replace the thrust bearing, if it wears out excessively.

(3) The sealing part is leaking. The airproof washer gets older and expired. Replace the airproof washer.
(4) The meter head does not count, but the rotor shaft runs well and the  fluid discharges as usual. (1) The gear pin ruptures or falls off.

(2) The  major axis of the alnico connecting  mechanism breaks off.

(3) The gear and the axis of the shift gear mechanism are blocked.

(4) The cross connecting rod of the  shift gear mechanism breaks off.

(5) The inside and outside  alnico is demagnetized, and the coupling  seize up.

(1) Install and replace the fixing pin.

(2) Replace the major axis.

(3) Dismantle the gear and the shaft, then use the sandpaper to polish them, and make them working nimbly, keep certain gap.

(4)Get the cross connecting rod enter the spindle slot, and reinstall.

(5)Replace the alnico inside and outside.

(5) The  major axis of the alnico connecting  mechanism breaks off. (1) The wallop is too strong.

(2) Malfunction of the meter head.

(1) Open the valve slowly when using the flowmeter.

(2) Inspect whether the electric generator of the alnico connecting mechanism and the big numerical wheel counter are blocked,  then repair them if they are blocked and not rotated.

(6) The numerical wheel fails to count. (1) The numerical shaft has not sprung.

(2) The gear-driven chain falls off.

(3) The shifting fork or the pin falls off and breaks off.

(4) The gear-driven wheel is destroyed.

(5) The end surface of numerical wheel and wheel displays the digit’s increase are blocked.

(1) Make the meter head zero reset and the numerical shaft has sprung. If still not work, have a try according to the following repairing methods.

(2) Adjust the transfer gear.

(3) Reinstallation or replacement

(4) After finding out the reason, install and replace the gear.

(5) Suitably file the carry wheel short; ensure the certain gap between two wheels’ surface.

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