Four, XFLC-13 oval gear flow transmitter 
 XFLC-13-type oval gear flow transmitter is composed of body and QF13-type letter and liquid flow within the pipeline can be converted to electrical pulse signal output. He and I plant the production instrument supporting the use (also with other instruments that can accept the signal, such as the risk microcomputer display instrument), electronic instrument directly displays the total amount of liquid flowing through the pipeline and the instantaneous flow of suitable far distance measurement shows that self-control adjustment, computer refueling and other occasions 

 1, the technical performance 
 1) allows the basic error: ± 0.2% 

 2) the measured liquid viscosity: 0.6 ~ 200mPa.s 
 3) the measured liquid temperature: -10 to +65 ° C 
 4) The maximum working pressure 
 Cast iron, stainless steel 1.6MPa 
 Cast steel: for DN20 ~ 25,2.5 of MPa, DN15 ~~ and 40,6.4 MPa, 
 5) Main material: cast iron, cast steel, stainless steel 
 6) pipe flange connection: JB78-59, JB79-59 
 7) the device is shown: QF13 letter 
 a, power supply: 12 ~ 24VDC (I plant display with the instrument) 
 b, the pulse amplitude V = 4V (square wave) low <4.5V, high 
 Level> 8.5V 
 transmission distance: 1km (metal shielded cable wire resistance ≤ from 39Ω to) 
 8) the electrical properties of precision: ± 1 pulse 
 9) explosion-proof rating: 1AIICT5 the 
 10) Ex safety barrier models: NF713 
















 Fifth, of QF letter 
 Production in the factory with the A1, E1 + T counter oval gear flow meter (or transmitter) to install a letter to Far EasTone letter, it measured media traffic converted into electrical pulses, which system automatic control. 
 The QF letter is composed of high-frequency oscillator, detector, detector, shaping circuit, when slotted sheet metal rotary oscillation circuit and detector coupling coil, that interfere with the magnetic field lines, so a bunch of AM signal by the detector into the shaping circuit into a square wave voltage variations due to the load resistor and the current corresponding changes at the same time sent a letter two terminal high-low inversion. 

 (A) Structure 
















 (B) technical parameters 
 (1) Operating voltage: 12VDC operating voltage range: 11 ~ 15 VDC, 
 (3) output signal: V = 4 (square wave) high low <4.5V> 8.5V 
 Far EasTone distance: 1KM (metal shielded wire, the wire resistance ≤ from 39Ω to) 
 (5) ambient temperature: -10 ℃ ~ 65 ℃. Proof grade: a: The iaIICT5 b: dIIBT4 of 

 (C) of QF letter output cable 

 -I sent a letter 1.QF output cable, QF.II letter output cable 






 (D) Upon seeing the size of the barrier shape size (JF-type) 













 Note: The factory can be equipped with a JF type safety barrier, the user must be described in order 
 (E) explosion-proof performance 
 IQF explosion-proof letter with the oval gear flow meter supporting the pulse letter device in iaIICT5 and d IIBT4 of class place, the proof form for intrinsically safe and flameproof, in the shell the proof mark. the IQF letter connected with the barrier