This volumetric flowmeter, its measuring chamber is the enclosed cavity formed with the tooth socket of the helical rotor (measuring component) and the inner wall of the flow chamber. A volume of 8 times of the cavity can be output for each revolution of the rotor; Therefore, revolutions of the helical rotor are in direct proportion to the accumulated flow of the fluid.
Technical Parameter:
1. Size(mm): 40, 50, 80, 100, 150, 200, 250, 300
2. Basic permissible error (%)0.2, ± 0.3, ± 0.5
3. Repeatability error (%): 0.07 (grade 0.2, grade 0.3), 0.17 (grade 0.5)
4. Permissible operation pressure (MPa): 1.6, 2.5, 4.0, 6.4
5. Temperature of the medium to be measured (): - 20~ 60o C, - 20~ 120o C, - 20~150o C, + 100~200o C
6. Viscosity of the medium to be measured (Mpa. S): 0.6 ~ 200
7. Explosion proof grade: ExdIIBT6
8. Standard implemented to pipe flanges: JB 79-59, JB 82-59, GB 9112-1988, GB 9113-1988
9. Main materials of flow meter: Stainless steel, cast steel, and cast iron.
Special Features:
1. High measuring accuracy, wide flow range, good repeatability.
2. Uniform speed of helical rotor rotation, low noise of flow meter, small vibration, and long service life.
3. Not sensitive to change of viscosity, especially suitable for measuring liquid of relatively high viscosity.
4. Simple structure, small outer dimensions, and light weight.
5. Easy installation, no straight tube sections are needed in front of and behind the flow meter.

	Oval Gear Flowmeter Precision:<±0.5%  Material: cast steel/stainless steel/cast iron  Optional: Pulse output; reset function  NP:1.6Mpa/2.5Mpa/4Mpa Temperature:-40~ +160 oC
	Rotary Piston Flowmeter  Wide Flux---:1L/H-16000L/H  Optimized structure---: No flow adjustment is required.  Measuring Medium---: Petro, Diesel oil, Diesel oil, Distilled water, Juice, Chemical reagent etc. Safety---:Flow through the meter continues even when piston was stuck by     impurity.  High precision: Up to 0.3% Self-lubricant, high precision, high reliability, low noise, smooth running, easy maintenance
	Wet-test(drum-type) gas meter  Applications & User Benefits  Wet-test (drum-type) gas flow meters are used universally to measure and record gas volume and gas flow rate for many industrial,  petroleum and chemical processes; environmental; pilot plant or  test; controlled chamber; laboratory and research applications.  Wet-test meters consistently provide the highest accuracy and  precision even at the lowest gas flows with inert or the most aggressive gases
	Mechanical meter  3-wheel mechanical diesel flowmeter  4-wheel mechanical diesel flowmeter 4-wheel mechanical fuel flowmeter
	Liquid roots flow meter  Accuracy: ±0.5%;±0.2%  Material : cast steel/stainless steel/cast iron  Optional: pulse output; reset function  Normal pressure:1.6Mpa/0.6Mpa Temperature:-10~ +60 oC  Rotors never touch each other and therefore are not subject to wear.  More over double case construction allows to maintain the measuring unit Without removing the entire PD flowmeter form the line.
	UE-F Double rotator flow meter  Applies to low viscosity oil, light oil, heavy oil, crude oil with sand and water, liquid from low viscosity to high viscosity.  Max. flow is 2 times larger than normal flowmeter.  Long life, high accuracy and reliability.  Minimal pressure loss.  1000 meters of cable for long distance output. pulse output N=0.1L(a pulse for 1N), for direct connection with computer networking. An explosion of the Ia II CT6(intrinsic safety type); flameproof d II BT6(flameproof); protection IP56.