Active Member
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[China]
Address: No. 41, Chengxi Rd, Yantan industrial zone, Yantan dist., Zigong city, Sichuan province, China
Contact name:Nancy Lan
Sichuan Vacorda Instruments Manufacturing Co., Ltd |
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High Temperature Radar Level Meter Digital Radar Gauge Measuring Level Rod
Product Description
Radar liquid level sensor technology transmits a high frequency electromagnetic wave pulse typically in the microwave spectrum, and receives the wave reflected off a liquid surface. The time taken for the microwave pulse to traverse the distance between the transmitting antenna and target surface, and back again to the receiving antenna is measured.
The distance (d) between the radar liquid level sensor and the liquid surface can be calculated by dividing the time taken (t) by two, and multiplying that by the speed of light (c), i.e. d = c ∙ t / 2. The liquid level in a tank (LT) can then be determined by subtracting distance (d) from the height of the radar level sensor (HT), i.e. LT = HT – d.
Features:
1. No media contact for vertically mounted type, so flexibility for
use on different corrosive media, thick fluids, slurries,
wastewater
2. High temperature fluid compatibility for vertically mounted
types, since no sensitive components make contact with the fluid
3. High accuracy due to high frequency pulse wave and precise
transit time time measurement
4. Sealed pressurised vessel will not affect performance
5. Longer range than ultrasonics
6. Not affected by surface changes such as air temperature, which
cause problems with ultrasonics
♦903
 | Suitable for Medium | Solid material, Strong dust,easy to crystallize, condensation occasion |
| Measuring Range | 70m | |
| Frequency | 26GHz | |
| Accuracy | ±15mm | |
| Process Temperature | -40℃~130℃(Standard type) | |
| Process pressure | -0.1~4.0 MPa (Flat flange) -0.1~0.3MPa (Universal flange) | |
| Signal output | 4~20mA /HART (2-wire / 4-wire) RS485/ Modbus | |
| Power Source | Two-wire (DC24V) Four-wire(DC24V/AC220V) | |
| Connection | Universal Flange | |
| Protection Grade | IP67 | |
| Explosion-proof Grade | Exia IIC T6 Ga/Exd IIC T6 Gb |
♦904
 | Suitable for Medium | Solid material, Strong dust,easy to crystallize, condensation occasion |
| Measuring Range | 80m | |
| Frequency | 26GHz | |
| Accuracy | ±15mm | |
| Process Temperature | -40℃~130℃(Standard type) | |
| Process pressure | -0.1~0.3MPa | |
| Signal output | 4~20mA /HART (2-wire / 4-wire) RS485/ Modbus | |
| Power Source | Two-wire (DC24V) Four-wire(DC24V/AC220V) | |
| Connection | Thread, Universal Flange | |
| Protection Grade | IP67 | |
| Explosion-proof Grade | Exia IIC T6 Ga/Exd IIC T6 Gb |
♦906
 | Suitable for Medium | Hygienic liquid storage, Corrosive container |
| Measuring Range | 20m | |
| Frequency | 26GHz | |
| Accuracy | ±3mm | |
| Process Temperature | -40℃ ~ 130℃ | |
| Process pressure | -0.1~4.0MPa | |
| Signal output | 4~20mA /HART (2-wire / 4-wire) RS485/ Modbus | |
| Power Source | Two-wire (DC24V) Four-wire(DC24V/AC220V) | |
| Connection | Flange | |
| Protection Grade | IP67 | |
| Explosion-proof Grade | Exia IIC T6 Ga/Exd IIC T6 Gb |
Ultrasonic level gauge quotation
2. Environmental conditions for the use of ultrasonic level gauges
1. Medium pressure: Acoustic waves cannot propagate in vacuum, but
can propagate in micro-vacuum. However, we recommend not to use it
in any vacuum environment, that is, under a slight vacuum, because
it may cause abnormal operation or large errors of the ultrasonic
2. Medium humidity: In dry or saturated humidity air, the speed of
sound will change by 2%. The air in the water vapor contains a
variety of gases, which affect the speed of ultrasonic emission
3. Space: there are obstacles or pipes under the sound wave, which
affect the ultrasonic emission and cause signal loss
4. Foam: A large number of bubbles produced by the measured medium
can easily absorb sound waves or interfere with sound emission. 5.
Air flow: negligible when the wind speed is less than 50km/h. When
the wind speed is greater than 50km/h, it will affect the
measurement results
1. What is the ultrasonic level gauge?
Ultrasonic level gauge is a monitoring instrument for measuring
liquid height, tank height and material position. The instrument
itself can adopt two-wire, three-wire or four-wire technology. The
two-wire system is: the power supply and signal output are shared;
the three-wire system: the power supply circuit and the signal
output circuit are independent. When using DC 24v power supply, a
3-core cable can be used, and the negative power supply terminal
and the negative signal output terminal share one core; four-wire
system: when using AC 220v power supply, or when using DC 24v power
supply, the power supply circuit and the signal output circuit are
required to be completely isolated , A 4-core cable should be used.
DC or AC power supply, 4 ~ 20mADC, high and low switching output.
Household ultrasonic level gauge
2. What are the performance characteristics of the ultrasonic level
gauge?
Strong anti-interference performance. The upper and lower nodes can
be set at will, online output can be adjusted, and displayed on
site. Analog quantity, switch quantity, RS485 output are optional,
convenient to interface with related facilities.
Use polypropylene waterproof shell. The shell is small and sturdy,
with excellent chemical resistance. For inorganic compounds, no
matter acid, alkali or salt solution, there is almost no
destructive effect except strong oxidizing substances. Almost all
solvents are insoluble at room temperature and can be used for
alkanes, hydrocarbons, alcohols, phenols, and aldehydes. , Ketones
and other media.
Non-toxic. It can be used for the installation of equipment in the
pharmaceutical and food industries, and the maintenance is very
convenient.
