ZRN-100 series of fixed Clamp-on ultrasonic flowmeter Measured fluid may be water, sea water or oil, slurries and the like uniform liquid, conductive or non-conductive, non-corrosive or corrosive liquids can be measured. Beijing Sino-Swiss can Instrument Technology Co., Ltd. of ZRN-100 series of fixed outer clamp-on ultrasonic flowmeter backlit LCD display instantaneous flow meter and the whole Chinese positive, negative and net cumulative flow, velocity, time, analog input and other data, it can be applied to steel, stainless steel, cast iron, cement pipes, copper, PVC, aluminum, glass and steel and other mass density of the pipeline.
( Clamp-on ultrasonic flowmeter A brief description)
• Compact, rugged, die-cast aluminum international advanced machines.
• Strict board design, higher stability.
• 5 can be accessed by road 4-20mA current signal (such as: temperature, pressure, level, etc.).
• Fang Fei operator Malfunction lock protection.
• Have sound alarm function (such as: electrical fault, etc.).
• 64 days before the automatic memory, the first 64 months of the previous five years cumulative flow.
• To overcome the effects of a small amount of sediment, suspended particles and air bubbles on the signal to improve the accuracy of flow measurement, flow measurement is particularly suitable for the pipeline. Clamp-on ultrasonic flowmeter performance characteristics)
Measurement of liquid: a single uniform and stable flow of water, acid, alcohol, water, oils, etc., turbidity is less than 10000ppm, particle size less than 1mm
Pipe materials: steel, cast iron, PVC pipes and other ultrasonic penetrable full pipe, dense texture, no serious corrosion and scaling, allowing the mass density thin lining
Pipe lining material: rubber, epoxy asphalt, glass, steel, mortar, or unlined
Diameter range: clamp-on sensors suitable diameter DN15mm ~ 6000mm
Velocity range: 0 ~ ± 32m / s, bi-directional flow
Accuracy: better than ± 1.0% (under standard conditions).
Straight pipe length: Upstream) 10D, downstream) 5D from the pump outlet) 30D (D: diameter)
Display: 2 x 20 character LCD display with LED backlight
Signal output: 4-20mA or 0-20mA RS232 (optional RS485)
Environmental temperature / humidity: Host -30 ℃ ~ + 80 ℃; sensor -40 ℃ ~ + 160 ℃, the sensor work can be flooded, the water depth is less than 3m.
Power: AC220V, DC8 ~ 36V or AC7 ~ 30V
Host technical parameters:
ZRN-100 Ultrasonic flowmeter Dimensions:
Ultrasonic flowmeter installation and precautions
Split Ultrasonic Flowmeter Wiring:
ZRN-100 Ultrasonic flowmeter
And installation of sensors :
ZRN-100 series ultrasonic flow meter sensor using a pair of transceivers piezoelectric ceramics, they are able to transmit and receive through the conduit and the flow of ultrasonic signals, the flow measurement is by measuring the transmission and reception of ultrasonic waves at different times the difference to complete. Because of this difference is very small, so the distance between the sensor and parallelism will affect the measurement accuracy, the user should be particularly careful to install sensors.
ZRN-100 Ultrasonic flowmeter installation
Choose a sufficient length of straight pipe location, preferably new pipeline, no rust, easy local operation.
Clear debris and rust on the pipe, preferably using angle scrub destroyed turbine corrosion.
Emitting surface of the sensor is coated in a sufficient number of coupling agent (such as: butter, Vaseline, etc.), the purpose of coupling agent coated sensor surface is to exclude air duct between the outer surface of the emitter.
Special note: To avoid sand and debris into the middle.
The upper portion of the inner wall of the pipe in the horizontal direction is likely to retain some bubbles, should be installed in such a pipeline to select the side of a vertical tangent to the pipe surface.
Sensor installation distance:
Distance sensor is installed in the M25 values displayed in the window, it refers to the inside of the distance between the two sensors, in order to accurately measure, users should install the sensor according to the distance value displayed.
V installed sensors:
V square mounting the sensor is commonly used method, is generally recommended for use on 15-400mm pipes, it is sometimes called reflection method.
Z installed sensors:
Generally Z mode is used on more than 200mm pipes, it is sometimes called direct method.
W installed sensors:
Mode is typically used on 50mm below the small tube.
N installed sensors:
Rarely used method.
Check the installation:
After installing the sensor user to check on the following items: a received signal strength, signal quality Q value, the time difference, the estimated liquid speed of sound, signal transmission time ratio, the only way to stabilize the operation of the meter, accurate measurement.
It refers to the amplitude of the signal strength of the received ultrasonic signal is amplified with 3-digit number:  refers to any signal is not detected;  refers to the maximum received signal.
Although the signals between the 500-999 meter can work, but a strong signal strength will be able to get good measurement results, so the user should adjust the sensor receives the signal to the maximum.
We recommend the following manner to obtain greater signal strength:
(1) If the measured flow value is unstable, the signal strength is lower than 700, re-select the preferred measurement position.
(2) Try to polish the outer surface of the pipe, apply more coupling agents.
(3) Adjust the relative position of the sensor while observing the received signal strength meter, stop at the highest position, but also to check the distance between the sensor meets the M25 window display requirements.
Signal quality (the signal quality):
Signal quality meter is higher SNR value means .Q (abbreviated SNR) with Q values to represent, of course,
The measured data are more accurate, Q values should be between 600-900 range, the higher the better.
Q value is low may have the following reasons:
(1) interfere with other equipment or devices nearby, such as the interference of the inverter on a strong solution is: to re-select the installation location, away from noise sources, well shielded, do not share power supplies.
(2) The sensor and the pipe coupling is bad, should be re-polished, painted some weight coupling agent.
(3) the measured pipe sections more difficult to measure, we need to re-select the measuring point.
The total transfer time and the time difference:
The total transmission time and the detected time difference is displayed in the menu window number M93, which are involved in the calculation of basic data pipeline flow, so the traffic will be with the total transmission time and time difference changes.
The total range of variation transmission time should be minimal.
Time difference fluctuates more than 20% indicates a problem in the installation of the sensor, the user should check for proper installation.
Transmission time ratio
This value is often used to check the sensor is installed correctly, pipeline input parameters are consistent with the actual situation. If the pipe parameters and sensors installed properly, this value should be in the range of 100 ± 3.
It exceeded the user should check the following items:
• pipe parameters have been entered correctly, are consistent with the actual;
• Are the sensor installation distance as the M25 window shown;
• The sensor mounting direction is correct;
• sensor installation location is appropriate; whether the test pipe section deformation; whether there are internal sources of interference;
• Check that the other side does not meet the measurement requirements.
(Clamp-on ultrasonic flowmeter installation method)
Stainless steel installation, a special double-shielded coaxial cable, can be extended to 200 meters, the cable characteristic impedance of 50W.
* Accuracy: better than 1%, Repeatability: better than 0.2%.
* Measuring cycle: 500ms (2 times per second, each cycle of 128 sets of data collection).
* Power supply: 85 ~ 264VAC / isolated 24VDC (F4 type 8 ~ 36VDC).
* Maximum flow rate: 64m / s (velocity resolution of 0.001m / s).
* Display: 2 * 10 characters backlit LCD can display instantaneous flow and positive and negative, the net cumulative flow, velocity and so on.
* Action: 4 * 4 Touch keyboard (F4 host magnetic 4 button) operation.
* Signal Input: • 3-way 4-20mA analog input accuracy of 0.1% can input pressure, level, temperature and other signals.
• 2 three-wire PT100 platinum resistance.
* Signal output: • 1-channel isolated RS485 output.
• 1-way 4-20mA or 0-20mA output.
• 1-channel isolated OCT (programmable, default 200ms between 6 ~ 1000ms pulse width).
• 1 relay output (pulse width 200ms).
* Communication protocols: • MODBUS protocol, M-BUS protocol, Haifeng FUJI extended protocol, and is compatible with other domestic manufacturers of similar products Communication Association.
* Other features: • Automatic 512 days before memory, before 128 months, 10 years before the positive / negative / net cumulative flow.
• automatic memory 30 times before, the power outages and traffic can be automatically or manually additional traffic, it can be read via MODBUS protocol.
• Programmable Batch (quantitative) controller self-diagnostic function.
• E-mail can be sent through to the code files for software upgrades.
* Protection class: sensor IP68, F4 host IP68, the rest of the host IP65.
* Explosion levels: EXdⅡBT4 (ZRN-100F2 type).
Outer tie sensor parameters:
External sensor is tied directly tied to the outer surface of the sensor for the pipe flow measurement in order to achieve an installation, has nothing to do with the diameter, simple installation, no need to shut down, no pressure loss, etc. Selection of coding:
Clamp-on, wall-mounted, external ultrasonic flowmeter specific selection leaflet, please call: 400-676-6002 Request.
Explanation: The Wall hosts, AC power supply, M1 standard probe, DN200 diameter, carbon steel pipe, pressure 1.6MPa, flow units cubic meter, 485 output.
10 m cable line notes explain:
①: * AC power applied to ZRN-100F type, ZRN-100Y type, other models hosts for battery-powered or DC power supply.
* DC power supply for all models, in addition to ZRN-100F1, F2, F3, ZRN-100S power is 24VDC, the rest is 8-36VDC.
* ZRN-100W battery-powered meter can also 8-36V power supply, please indicate if required when ordering.
②: Battery-powered ultrasonic industrial water / heat meters, such as the choice of plug-in or clamp-on sensors, the maximum measurable diameter is DN800.
③: cast iron, glass, steel, PVC, cement and other non-welded pipes such as the selection plug-in sensor, to be equipped with a dedicated pipe hoop before installation, please specify when ordering.
④: minimum reading only applies to ZRN-100W battery-powered ultrasonic water meter selection.
⑤: * such as the use of active 4-20mA output, the power supply requirements AC or DC 24V.
* OCT pulse width factory default settings 200ms, between 6 ~ 1000ms programmable.
* Battery-powered ultrasonic water meter or heat meter RS485 output, there are two options, one is the internal battery, operating voltage of 3.3V, and the other is
Require external DC power supply provided, please indicate when the user ordering, or they may output interface 485 is invalid.