Water Sensors – Rika
Water Level sensors
Level sensor or water level switches detect the level of liquids, other fluids and fluidized solids, including slurries, granular materials, and powders that exhibit an upper free surface. Substances that flow become essentially horizontal in their containers (or other physical boundaries) because of gravity whereas most bulk solids pile at an angle of repose to a peak. The substance to be measured can be inside a container or can be in its natural form (e.g., a river or a lake). Continuous level sensors measure level within a specified range and determine the exact amount of substance in a certain place.
There are various kinds of water level sensors, such as pressure transducers, bubblers, shaft encoders, ultrasonic sensors, capacitance sensing, liquid float switch, bubbler sensor, etc.
Features: Wide supply voltage range; Accurate measurement of water level; Low cost; Not conductivity based; Low power operation
Applications: Transport tanks, storage tanks and water tanks; environmental monitoring, reservoir monitoring, etc.
Level transmitter is one of the very important sensors and plays a very important role in a variety of consumer/ industrial applications. As with other types of sensors, level sensors are available or can be designed using a variety of sensing principles.
Scroll down to browse for the sensor or instrument you need, or give us a call to discuss your needs.
On this page:
Other related pages:
- RK500-01 Water Temperature sensor
- Temperature, Humidity, Barometric Pressure Sensors – Rika
- Air Quality Sensors – Rika
- Solar Radiation and Light Sensors – Rika
- Soil Sensors – Rika
- Multi-Parameter Weather Sensors – Rika
- Rain, Leaf Wetness, Snow Sensors – Rika
- Weather Stations – Rika
- Temperature, Humidity & Pressure instruments – Vaisala
Liquid Level Sensors
RKL-01 Submersible Liquid Level Transmitter
RKL-01 Submersible Liquid Level Transmitter is with stainless steel isolation diaphragm diffusion silicon pressure core body, the pressure core body adopts the process of laser trimming resistor for a wide temperature range of zero and sensitivity temperature compensation. Special cable for air-venting conduit and waterproof technology ensures water tightness, and ventilation between inside and outside, so as to acquire accurate and stable measuring data.
Features:
- High accuracy, High sensitivity
- Fast response
- Good stability
- Strong resistance to interface
- Anti-corrosion material optional
- Low temperature drift
- Wide Temperature Range Compensation
Applications:
- Agricultural irrigation
- Petroleum
- Chemical
- Power generation plant
- Urban water drainage
- Hydrographic survey
- Environmental protection
Specifications:
| Item | Technical specifications |
| Range | 0 ~ 0.5m…200mH2O or 0 ~ 5KPa…2MPa |
| Output | 4-20mA,0-5V,0-10V,RS485 |
| Supply Voltage | 12-30VDC,24V typ. |
| Over Pressure | 2×FS |
| Measuring Medium | The liquid(not sticky ) compatible with 316 stainless steel |
| Total Accuracy | 0.1%FS,0.3%FS(0.25%FS),0.5%FS |
| Long-term Stability | 0.1%FS/year typ.,0.2%FS/year max. |
| Ingress Protection | IP68 |
| Operating Temperature | -40℃~ +80℃ |
| Compensating Temperature | -10℃~ 70℃ |
| Temperature Drifting | 0.03%FS/℃ typ.,0.05%FS/℃ |
| Cycle Life | 1*10^8 @25℃ |
| Main Material | Sensor:316L,housing:304SS (316L is optional) |
| Cable | Outer material：PUR,Atmospheric pressure compensation cable, Polymer waterproof plug at cable end |
| Power Consumption | Current output:(U*0.02)W, Voltage output:(U*0.008)W, Digital output:(U*0.015)W |
| Load Capacity | Current output:≤(U-7)/0.02Ω, Voltage output:≥100kΩ |
| Weight(probe unpacked) | Approx. 230g |
| Storage Condition | 10℃-50℃@20%-90%RH |
Dimension:
Mounting:
Accessories:
Product Details:
Data sheet on RKL-01 Submersible Liquid Level Transmitter (pdf, opens in a new tab)
RKL-02 Radar Level Transmitter
RKL-02 Radar Liquid Level Transmitter antenna emitter narrow microwave pulse, the pulse in the space at the speed of light transmission, met on the surface of measured medium, some of its energy is reflected back, by the same antenna. Firing pulse and receives the pulse interval and the antenna to the surface of the measured medium is proportional to the distance, to calculate the distance on the surface of the antenna to the measured medium.
Features:
- Small beam Angle, the energy concentration, strong anti-interference, high accuracy and reliability
- Range of up to 70 meters, covering large reservoir and other water level measurement
- Good stability
- Multiple output signal is optional
- Transmitted power is extremely low, no harm to human body and environment
- Easy Installation
- False Echo Filtering
Applications:
- River water level measurement
- Lake water level measurement
- Shallow water level measurement
- Hydrographic survey
- Environmental protection
Specifications:
| Item | Technical specifications | |
| Range | 10m,30m,50m,70m | |
| Output |
4-20mA,RS485(MODBUS-RTU) |
|
| Supply Voltage |
12VDC,24VDC,220VAC |
|
| Process connection |
G1_1/2,support flange |
|
| Working frequency |
Range ＜30m：6.8GHz ， Range ＞30m/＜70m：26GHz |
|
| Accuracy |
±3mm |
|
| Display |
128*64LCD display resolution:1mm |
|
| Relay alarm | 250VAC/30VDC@5A Optional | |
| Ingress Protection |
IP67 |
|
| Medium Temperature |
-40℃~ +150℃ |
|
| Medium Pressure | -100~100kpa | |
| Operating temperature | -40~+85°C | |
| Housing material |
Aluminum alloy |
|
| Antenna material |
304ss |
|
| Shock | 10m/s2@10-150HZ | |
| Storage Condition |
10℃-50℃@20%-90%RH |
|
Dimension:
Unit:mm
Mounting:
Radar antenna launch microwave has a certain Angle, from the edge of the antenna to the surface between the measured medium, and launch a microwave beam radiation areas shall not be an obstacle.
In order to ensure that products meet the requirements of IP67 rating, please make sure:
- The sealing head intact;
- The cable is not damaged;
- Ensure that the cable used in line with the requirements of electrical connection in the specification;
- Before entering the electrical interface, the cable bending down, to ensure that water will not flow into the shell, as shown in;
- Please tighten the cable seal head, see;
- Please return the unused electrical interfaces to blind plugging plugging tight, see.
Product Details:
Data sheet on RKL-02 Radar Level Transmitter (pdf, opens in a new tab)
RKL-03 Ultrasonic Liquid Level Transmitter
RKL-03 Ultrasonic Liquid Level Transmitter is a kind of non-contact, high reliability, high cost performance, easy installation and maintenance of material level measuring instrument. It doesn’t have to contact medium can meet the requirements of most of the material level measurement. Firing pulse and receives the pulse interval and the antenna to the surface of the measured medium is proportional to the distance, to calculate the distance on the surface of the antenna to the measured medium. The product can cooperate with RK600-01 data logger or general recording instrument is used.
Features:
- Range of up to 30 meters
- Level or material measurement
- Good stability
- Response speed is adjustable
- With LCD display, menu settings
- Easy Installation
Applications:
- River water level measurement
- Lake water level measurement
- Shallow water level measurement
- Hydrographic survey
- Material level measurement
- Environmental protection
Specifications:
| Item | Technical specifications |
| Range | 5m,10m,15m,20m,30m |
| Output | 4-20mA( 2wires),4-20mA(4wires),RS485(4wires) |
| Supply Voltage | 24VDC,220VAC |
| Accuracy | 0.5%-1% |
| Resolution | ±3mm or 0.1%FS(take the maximum value) |
| Display | LCD with English |
| Control output(optional) | Relay AC250V/8A or 30V/5A |
| Power consumption | 4-wire,without relay:1.9W 4-wire,with relay:3.1W 2-wire,without relay:0.72W |
| Ingress Protection | Probe:IP68,Display instrument:IP66 |
| Operating Temperature | Probe:-40℃~ +85℃,Display unit:-20℃~ +60℃ |
| Housing material | Anti-aging corrosion resistant engineering plastics |
| Process connection | Range=0-5m:M48*2
Range=0-10m:G2 or M60*2 Range=0-20m:G3 or M78*2 Range=0-30m:G3 M78*2 Range>30m:M108*2 |
| Menu setting | Reference zero point, maximum of measuring range,minimum of measuring range,alarm point,Return difference setting,working mode,response time,parameter correction,communication setting etc. |
| Storage Condition | 10℃-50℃@20%-90%RH |
Dimension:
Unit:mm
Mounting:
Product Details:
Data sheet on RKL-03 Ultrasonic Liquid Level Transmitter (pdf, opens in a new tab)
Water Quality Sensors
RK500-12 Liquid PH Sensor
Features:
- On-line & real-time monitoring
- Solid dielectric and PTFE liquid junction, not easy jam, maintenance free
- High accuracy
- Simple operation and high reliability
- Internal signal isolation, strong anti-interference
- Widely power supply(7-30VDC)
- Probe can be used under water(IP68)
- Submerged mounting bracket is optional
Applications:
- Environmental protection
- Agriculture
- Aquaculture
- Water conservancy
- Sewage treatment
- Industrial wastewater treatment
Specifications:
| Item | Technical Specification |
| Measurement Principle | Electrochemistry |
| Range | 0-14PH |
| Supply | 7-30VDC(power consumption<0.2W) |
| Accuracy | ±0.05PH |
| Resolution | 0.01PH |
| Temperature Compensation | Temperature compensation is optional |
| Response time | <8s(flowing liquid), <14s(stationary liquid) |
| Stability | ≤0.01PH/24h |
| Output Signal | 4-20mA & RS485 at the same time |
| Calibration Cycle | Every 6 month(General water )
Every 3 month or shorter(Seriously polluted water ) |
| Operating Environment | 0-+80℃(<0.6MPa), high pressure is customizable |
| Cable length | 5m(default),customizable |
| Ingress Protection | IP68 |
| Storage | 10-60℃@20%-90%RH |
PH SCALE:
| PH value | Description | PH value | Description |
| <4.5 | Strongly acidity | 7.5-8.5 | Faintly alkalinity |
| 4.5-5.5 | Acidity | 8.5-9.5 | Alkalinity |
| 5.5-6.5 | Faintly acidity | >9.5 | Strongly alkalinity |
| 6.5-7.5 | Neutral |
Ordering Instructions:
Electrode Maintenance:
PH electrode is not used at ordinary times and can be soaked in 3mol/l KCL solution or saturated KCL solution. It is strictly prohibited to immerse the electrode in distilled water and deionize the water or tap water with minimal plasma content.If the PH electrode is contaminated with inorganic substances, it can be cleaned with 0.1mol/l Hcl or NaOH solution for a few minutes and then washed with distilled water. If the PH electrode is contaminated with organic substances, it can be cleaned with alcohol or acetone and then cleaned with distilled water.(note: the protective cap before the electrode should be removed when using);
Installation and Fixed:
Product Details:
| Part No | Product Detail | Price (ex-GST) |
|---|---|---|
| RK500-12 | Liquid PH Sensor (for general water) Range: 0-14PH Accuracy: ±0.05PH Resolution: 0.01PH Output Signal: 4-20mA&RS485 at the same time Supply: 12-24V |
$479.24 |
Data sheet on RK500-12 Liquid PH Sensor (pdf, opens in a new tab)
RK500-04 Dissolved Oxygen Sensor
RK500-04 Dissolved Oxygen(DO) Sensor design based on the principle of fluorescence and high performance through oxygen membrane, with short response time, measurement accuracy, stable performance, etc. It can be widely used in chemical fertilizer, metallurgy, environmental protection water treatment engineering, pharmaceutical, biochemical, food, aquaculture and water such as continuous monitoring of dissolved oxygen in the solution.Features:
- On-line & real-time monitoring
- With temperature compensation
- High accuracy
- Simple operation and high reliability
- No external module, a whole design
- Long service life
- Dissolved oxygen and temperature measurement at the same time(RS485)
- No requirement for liquid velocity
- Not affected by ions
Applications:
- Environmental protection
- Water quality monitoring
- Aquaculture
- Clean in place(CIP)
- Sewage treatment
- Industrial wastewater treatment
Specifications:
| Item | Technical Specification | |
| DO | Temperature | |
| Range | 0-20mg/L | 0-60°C |
| Accuracy | ±0.5%FS | ±0.5°C |
| Resolution | 0.01mg/L | 0.1°C |
| Supply | 12VDC,24VDC | |
| Temperature compensation | 0-60°C | |
| Output | RS485 | |
| Measuring principle | Fluorescence | |
| Maintenance | Every 1year to replace fluorescent cap | |
| Response time | <60s | |
| Pressure Resistance | 0.3MPa | |
| Power consumption | <0.4W | |
| Operating Temperature | 0-+80℃ | |
| Probe material | General: 316L
For seawater: titanium alloy |
|
| Dimension | Φ16*125mm | |
| Weight(probe) | 1.5kg | |
| Ingress Protection | IP68 | |
| Storage | 10-60℃@20%-90%RH | |
| Cable length | 5m default, other length customizable | |
Product Details:
| Part No | Product Detail | Price (ex-GST) |
|---|---|---|
| RK500-04 | Dissolved Oxygen Sensor DO Range: 0-20mg/L, Accuracy: ±0.5%FS, Resolution: 0.01mg/L Temperature Range: 0-60℃, Accuracy: ±0.5℃, Resolution: 0.1℃ Output Signal: 4-20mA&RS485 at the same time Supply: 12-24V |
$1355.47 |
Data sheet on RK500-04 Dissolved Oxygen(DO) Sensor (pdf, opens in a new tab)
RK500-06 ORP Sensor Water Quality Monitoring System
RK500-06 ORP sensor is simple and cost effective solution for a wide variety of waste water and process applications. This all-in-one sensor provides simultaneous measurement of ORP and temperature. The rugged Ryton body is designed for easy installation into on-line via the 3/4 inch tapered threaded connections provided on both ends of the sensor. The wide body sensors (26 mm diameter) hold four separate elements in one unbreakable Ryton body, large volume gelled electrolyte and the double junction reference system slows down depletion and poisoning extending the life time.
Features:
- On-line & real-time monitoring
- Simultaneous ORP and temperature measurement
- Integral temperature element for enhanced accuracy
- Double junction and long diffusion path for reference pollution resistance
- Extended life time by large volume of polymerized electrolyte and porous PTFE diaphragm
- Solid Glass/Platinum electrode for solution ground or ORP measurement
- Simple maintenance by comprehensive design
- Submerged mounting bracket is optional
Applications:
- Environmental protection
- Water quality monitoring
- Aquaculture
- Biochemistry
- Sewage treatment
- Industrial wastewater treatment
- Pharmaceutical
- Chemical
Specifications:
| Item | Technical Specification | |
| ORP | Temperature | |
| Measurement Principle | Electrochemical(platinum ring) | Thermal resistance |
| Range | -1500mV-+1500mV | 0-80℃ |
| Resolution | 0.1mV | 0.1℃ |
| Accuracy | ±0.5mV | ±0.5℃ |
| Supply | 7-30VDC | |
| Response time | 5s | |
| Output | 4-20mA & RS485 at the same time | |
| Temperature compensation | 0-100℃ | |
| Output | 4-20mA,0-5V,RS485 | |
| Operating Enviroment | -10-+80℃(<0.6MPa) | |
| Stability | ≤1%/year | |
| Maintenance | Every 1 months to clean the electrode ,every 6 months calibrated | |
| Power consumption | <0.4W | |
| Ingress Protection | IP68 | |
| Storage | 10-60℃@20%-90%RH | |
| Cable length | 5m default,,customizable | |
Dimension:
Electrode Maintenance & Installation and Fixed:
PH electrode is not used at ordinary times and can be soaked in 3mol/l KCL solution or saturated KCL solution. It is strictly prohibited to immerse the electrode in distilled water and deionize the water or tap water with minimal plasma content. If the PH electrode is contaminated with inorganic substances, it can be cleaned with 0.1mol/l Hcl or NaOH solution for a few minutes and then washed with distilled water. If the PH electrode is contaminated with organic substances, it can be cleaned with alcohol or acetone and then cleaned with distilled water.(note: the protective cap before the electrode should be removed when using);
Clean the electrode with tap water every 3 months or 6 months according to the working environment.
Mounting bracket(length=1m) is optional
Product Details:
| Part No | Product Detail | Price (ex-GST) |
|---|---|---|
| RK500-06 | ORPSensor Range: -1500mV-+1500mV Accuracy: ±0.5mV Output Signal: 4-20mA&RS485 at the same time Supply: 7-30V IP68 |
$539.59 |
Data sheet on RK500-06 ORP Sensor Water Quality Monitoring System (pdf, opens in a new tab)
RK500-13 Online EC/Salinity Sensor
RK500-13 ORP sensor is simple and cost effective solution for a wide variety of waste water and process applications. This all-in-one sensor provides simultaneous measurement of ORP and temperature. The rugged Ryton body is designed for easy installation into on-line via the 3/4 inch tapered threaded connections provided on both ends of the sensor. The wide body sensors (26 mm diameter) hold four separate elements in one unbreakable Ryton body, large volume gelled electrolyte and the double junction reference system slows down depletion and poisoning extending the life time.
Features:
- On-line & real-time measurement
- Titanium alloy electrode & Teflon lining
- High accuracy
- Electromagnetic isolation
- Strong resistance to corrosion
- Polarization Resistance
- High temperature resistance
- Integral design without external transmitter
Applications:
- Environmental protection
- Aquaculture
- Water source monitoring
- Environmental monitoring
- Sewage treatment
- Oil and gas pipeline corrosion monitoring
Specifications:
| Item | Technical Specification | |
| EC | Salinity | |
| Measuring medium | Liquid | |
| Principle | Frequency conversion method | |
| Range | 0～500us/cm, 0～5000us/cm, 0～10000us/cm, 0～200000us/cm(any range of 0-300ms/cm can be customized, 1ms/cm = 1000us/cm) | 0～100000ppm(mg/L)
1ppm(mg/L)=1000ppb(ug/L)=1000000ppt(ng/L) |
| Supply | 7-30VDC(power consumption<0.2W) | |
| Accuracy | ±1% | |
| Response time | 1s | |
| Output Signal | 4-20mA & RS485 at the same time | |
| Electrode | Titanium alloy | / |
| Temperature compensation | / | Automatic compensation |
| Drift | ≤0.3%FS/24h | |
| Operating Temperature | -20℃-+80℃ | |
| Probe material | 316L or ABS(Strongly corrosive liquids) | |
| Ingress Protection | IP68 | |
| Storage | 10-60℃@20%-90%RH | |
| Cable length | Default:5m |
Dimension:
Installation & Usage
Directly into the liquid
Adopt submersible mounting bracket(show in the below figure)
Product Details:
| Part No | Product Detail | Price (ex-GST) |
|---|---|---|
| RK500-13 | Liquid EC &Salinity Sensor (for general water) EC range: 0-300mS/cm, Salinity range: 0-100000mg/L Accuracy: ±1% Output Signal: 4-20mA & RS485 at the same time Supply: 7-30V IP68 |
$472.53 |
Data sheet on RK500-13 Online EC/Salinity Sensor (pdf, opens in a new tab)