Formic acid flowmeter measurement principle is Faraday's law of electromagnetic induction, the sensor main components: the measuring tube, electrodes, excitation coil, core and yoke housing. It is mainly used to measure conductive liquids in closed conduits and slurry volume flow. Including highly corrosive liquid acid, alkali, salt. The products are widely used in petroleum, chemical, metallurgy, textile, food, pharmaceutical, paper and other industries as well as environmental protection, municipal administration, water conservancy construction. Features: 1, the measurement is not affected by fluid density, viscosity, temperature, pressure and electrical conductivity changes; 2, unimpeded flow of parts within the measuring tube, no pressure loss, lower straight pipe requirements; 3, the series of nominal diameter DN15 ~ DN3000. Sensor lining and electrode materials have a variety of options; 4, the converter uses a novel excitation mode, low power consumption, zero stability and accuracy. Flow range of up to 1500: 1; 5, the converter can be composed of a body or a separate sensor type; 6, the converter uses 16-bit high-performance microprocessors, 2x16LCD display, convenient parameter setting, programming and reliable; 7, traffic bidirectional meter measurement system, built-in three Totalizer: forward total, reverse total and the total amount of the difference; can be displayed. Zhuang, regurgitation, and a variety of output: current, pulse, digital communications, HART; 8, converter using surface mount technology (SMT), a self-test and self-diagnostic function; perform standard JB / T 9248-1999 Nominal Trail 15,20,25,32,40,50,65,80,100,125,150,200,250,300,350,400,450,500,600,700,800,900,1000,1200,1400 , 1600,1800,2000,2200,2400,2600,2800,3000,4000,5000,8000,10000 maximum velocity 15m / s Accuracy DNl5 ~ DN600 indicated value: ± 0.29% (velocity ≥1m / s); ± 3mm / s (flow rate <0.95m / s) ± 0.49% DN700-DN3000 indicated value (flow rate ≥0.79m / S); ± 4mm / s (flow rate <0.79m / S) fluid conductivity ≥5uS / cm Nominal 4.0MPa 1.6MPa 1.0MPa 0.6MPa 6.3,10MPa DNl5 ~ DN150 DNl5 ~ DN600 DN200 ~ DN1000 DN700 ~ DN3000 special orders ambient temperature sensor -25 ℃ - 60 ℃ ten converter and a body -10 ℃ - 60 ℃ lining ten Poly tetrafluoroethylene, neoprene, polyurethane, FEP (F46), plus net PFA maximum fluid temperature - 70 ℃ size Separate neoprene lining 80 ℃; 120 ℃ (when ordering) polyurethane lining 80 ℃ Teflon liner 100 ℃; 150 ℃ (when ordering) poly FEP (F46) plus net PFA signal electrode and the ground electrode material stainless steel 0Crl8Nil2M02Ti, Hastelloy C, Hastelloy B, titanium, tantalum, platinum / iridium alloy, stainless steel coated with tungsten carbide electrode scraper DN300-DN10000 connecting flange material Flange material stainless steel grounding 1Crl8Ni9Ti Import protection flange material DN65-DNl50 stainless steel 1Crl8Ni9Ti DN200 ~ DNl600 ten stainless steel housing Protection 1Crl8Ni9Ti DNl5 ~ DN3000 separate rubber or polyurethane lining sensor IP65 or IP68 other sensors - Body Flowmeter and Converter IP65 spacing (separate type) transducer distance sensor generally no more than 100m converter Technical data Power AC 85-265V, 45-400Hz DC 11-40V operation keys and display touch-four membrane keys all parameters can be set to choose, can also use the PC (RS232) converter set for programming; 3-line LCD wide viewing angle, wide temperature range, with backlight display; first line shows the flow value; the second line shows the flow units; the third line shows the percentage of traffic, the total forward and reverse total amount, the difference between the total amount, the police, the flow rate. Magnetic button two magnetic key to display the parameter selection and reset by the PC (RS232) converter set for programming; 2-line LCD wide viewing angle, wide temperature range, with a backlit display: Line 1: Magnetic buttons to select: show the percentage of traffic, forward total, reverse total amount, the difference between the total amount, the police, the flow rate. Line 2: Displays the traffic. Total internal totalizer forward, reverse, and the difference between the total amount of the total. One-way analog output signal output full isolation, load ≤600D. (20mA when); upper limit: 0-21mA optional, each file lmA; limit: 0-21mA optional, each file 1mA; forward and reverse flow output programming. Bidirectional analog output lower limit is. Or 4mA, the other with a one-way analog output. Bi-directional pulse output two outputs corresponding to the forward and reverse flow, frequency 0 ~ 800Hz, the upper limit 1-800Hz options, each file IHz; square wave or pulse selected, the selected pulse upper limit 2.5S, each file 1ms; passive isolation transistor switching output can absorb 250mA of current, voltage 35V. Dual alarm output can alarm (programming) high / low flow, air traffic control, fault status, n ,, reverse flow, analog-range and pulse-range, low-cut pulse, selectable output polarity; with isolation protection transistor switching output can absorb 250mA of current, voltage 35V (with pulse output is not isolated) digital communication RS232, RS485, HART select lining lining material mainly medium temperature ranges the highest performance - body separation polytetrafluoroethylene (F4) is the most stable chemical properties of a plastic, resistant to boiling hydrochloric acid, sulfuric acid, nitric acid and aqua regia, also resistant to concentrated alkali and various organic solvents. Chlorine trifluoride intolerance, high temperature and chlorine trifluoride high velocity liquid fluorine, oxygen, since oxygen corrosion. 70 ℃ 100 ℃ 150 ℃ (to be special order) 1, strong acids, alkalis and other corrosive media. 2, health media category. Poly FEP (F46) with F4, wear resistance, higher suction capacity F4. Ibid polyvinyl fluoride co-ethylene (Fs) applicable temperature limit lower than the Teflon, but the cost is lower. 80 ℃ neoprene 1, and has excellent flexibility, high tearing strength, good wear resistance. 2, corrosion resistance is generally low concentration of acid, alkali, salt medium, intolerance corrosion oxidation medium. 80 ℃ 120 ℃ (to be special order) water, sewage, weak abrasive slurry pulp. Polyurethane 1, strong wear resistance. 2, poor corrosion resistance. 80 ℃ neutral strong wear pulp, coal slurry, mud KH / LD series formic acid reference flow meter diameter range mm flow range m3 / h mm diameter flow range m3 / h φ15 0.060 ~ 6.360 φ450 57.230 ~ 5722.650 φ20 0.110 ~ 11.30 φ500 70.650 ~ 7065.000 φ25 0.180 ~ 17.660 φ600 101.7400 ~ 10173.60 φ40 0.450 ~ 45.220 φ700 138.470 ~ 13847.40 φ50 0.710 ~ 70.650 φ800 180.860 ~ 18086.40 φ65 1.190 ~ 119.40 φ900 228.910 ~ 22890.60 φ80 1.810 ~ 180.860 φ1000 406.940 ~ 40694.40 φ100 2.830 ~ 282.600 φ1200 553.900 ~ 55389.60 φ150 6.360 ~ 635.850 φ1600 723.460 ~ 72345.60 φ200 11.30 ~ 1130.40 φ1800 915.620 ~ 91562.40 φ250 17.660 ~ 176.25.0 φ2000 1130.4 ~ 113040.000 φ300 25.430 ~ 2543.400 φ2200 1367.78 ~ 136778.40 φ350 34.620 ~ 3461.850 φ2400 1627.78 ~ 162777.60 φ400 45.220 ~ 4521.60 φ2600 1910.38 ~ 191037.60 KHLD series acid Flowmeter Sizing spectrum caliber KHLD 3 ~ 10000 Model Code installation in the form of Y-one split code converter Model F ZA ZB round square Code Output signal I.4 4 ~ 20mA f frequency 1KHz Rs serial communication ( 485) C control output code EX explosion proof requirements N no proof (for the split) Code medium temperature T1 ≤65 ℃ T2 ≤120 ℃ T3 ≤180 ℃ (only for split) Code lining materials NE Neoprene (≤65 ℃) PTFE Teflon (≤189 ℃) PVC polyvinyl chloride (≤70 ℃) Code electrode material 316L stainless steel, Hastelloy C HB HC Hastelloy B Ti Ti Ta Ta