Transmitter
RZ26W Series Liquid Level Transmitter
Product Details
RZ26W series liquid level transmitters are online measurement industrial instruments which metal isolated diaphragm structure silicon piezo resistance or ceramics capacitor sensors are chose to be sensitive pressure measurement elements. The product uses super stable precision circuit (linearity <0.01%) for signal processing and outputs linear standard 4-20mA or RS 485 digital signal.
On the basis of absorbing the world’s advanced manufacturing processes, RZ26W’s anti-leak performance has been further improved. It has been proved via clients’ practices that RZ26W has 100% leak free damage within 12 years.
There are various types of RZ26W transmitters due to different test medium and application environment for selection (stainless steel rod type, stainless steel soft cable type, air guiding PE cable assembled type and lightning protection type). For instance, due to dew condensation in cold and plateau area, we designed the anti-condensation sub-type; due to induction lightning threat, we designed the super lightning resistance sub-type; due to the shake of overhanging sensors, we designed the shake-absorbing buffer sub-type, etc. Selectively combining these targeted designs can provide reliable technical guarantee for instruments safe operation.
Product Features:
l Standard MODBUS-RTU protocol, convenient for industrial field networking connection.
l Communication rate 1200～115200bps, Odd & Even parity are selectable.
l High precision 24bit AD converter.
l Reserved user secondary calibration interface.
l Pressure acquisition rate 10Hz, temperature acquisition rate 2Hz.
l Output precision 0～7 decimal places can be set
The sensor has excellent signal stability and resistance to electromagnetic interference. Sensor element which is imported from world famous manufacture, via lattice curing medication process and packaging, combining super stable signal processing technology, the core index of transmitters’ signal stability and resistance to outer electromagnetic interference is 100 times smaller than the allowable error of its accuracy level. On the one hand, it sets the physical basis of transmitters’ long term stability. On the other hand, it promotes the anti-electromagnetic interference capability which is far better than PLC. It also 5-20 times more stable than most transmitters on the market.
Classical applications:
u River water, water-collecting well, coal water slurry, drilling fluid, concrete slurry, petroleum products, milk, Sodium hydroxide, Nitric acid, etc.
Supply Ability
500 PCS / day
Lead Time
Quantity(Pieces) | 1 - 200 | 200 - 500 | >500 |
Est. Time(days) | 2~3 | 3~5 | 6~10 |
Technical Specifications
Functional parameters | |
Measurement range | 0～0.1m…0～200m |
Pressure specification | Positive pressure |
Accuracy level | ±0.5%FS, ±0.25%FS，±0.1%FS, ±0.0.075%FS, ±0.05%FS (Test conditions: temperature 20±2℃, temperature vabration <1℃, air pressure 86～106kPa, humidity 45%RH～75%RH, no vibration and electro-magnetic interference) |
Ability of over pressure | 3～6 times of measurement range. (Varied from different measurement ranges) |
Working temperature | -40～80℃ |
Zero temperature drift | ≤0.03%FS/℃ (doubled in proportion when measure range lower than 5m) |
Full range drift | ≤0.03%FS/℃ (doubled in proportion when lower than 100kPa) |
Annual stability | 0.25%FS/Year |
| Frequency response | Sensor<1ms; transmitter≤15ms |
Electrical parameters | |
Power supply | 24VDC 12VDC(selected) |
Current load | <(U-10)/0.02Ω [U: power voltage] |
Output signal | Two-line 4～20mA, RS485, etc. |
The effect of fluctuation of power supply on output | <0.003%FS/V |
Explosion-proof indication | Ex ia IIC T6 |
Requirements for electrical connection and wire diameter | wire diameter Φ6.5～Φ9mm |
Physical parameters | |
Applicable medium | Liquid and gas which would not react to the structure material (sensor and seal material) |
Sensor foundation material | Stainless steel, etc. |
Sensor seal material | Fluor rubber, ceramics, adhesive, etc. (no seal material for welding structure) |
Cable material | Φ7.2mm polyethylene special waterproof and air-conducting shielded cable |
Displayer & wiring box material | Cast aluminum alloy，stainless steel，engineering plastics |
Protection level | IP65 (displayer & wiring box), IP68 (cable & probe) |
Weight | The probe weight is about 0.3kg, the cable weight is based on the length. |
Surroundings parameters | |
Atmospheric pressure | 60～110kPa |
Environment humidity | ≤95%RH |
Storage temperature | -40～70℃ |
Vibration | Under the condition of 5gRMS, 20～2000Hz variation lower than 0.5%FS (only effective for general probes) |
Impact | 500g, 10ms impact the variation is lower than 0.5%FS (only effective for general probes) |
Electromagnetic/RF interference | Under the condition of 10～300MHz and 15V/m, the error is lower than 0.5%FS |
Outline Dimensions
Note:
1. Unit (mm)
2. Despite the difference of connection dimension, the outer dimension may be different; customized products please consult us.
Electrical Connections
1: Schematic diagram for electrical connection of 2-line 4～20mA analog signal output:
2: Schematic diagram for electrical connection of 4-line 485 digital signal output:
3: Schematic diagram for electrical connection of HART protocol liquid level transmitter:
Note: the safety barrier is necessary for explorsion-proof type, for general type, it is unnecessary.
Applications
Selection Guide
Note:
1. Special requirements please consult our company and note in order document in detail.
2. The application medium must be compatible with the selected product.
3. Please note that the explosion-proof product does not include the displayer.
4. If order transmitter with LCD or LED meter, power supply cannot be lower than 15V DC.
5. Customized connector type and size can be noted beside the selection model.
