Melan Measurement & Control Instruments (Shanghai) Co.,Ltd.
MELAN MEASUREMENT & CONTROL INSTRUMENTS (SHANGHAI) CO., LTD.
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Smart Pressure Transmitter, 4-20mA, Hart, Modbus Output
1. Working Principle
A pressure transducer often called a pressure transmitter, is a transducer that converts pressure into an analog electrical signal.
Although there are various types of pressure transducers, one of the most common is the strain-gage base transducer.
The conversion of pressure into an electrical signal, is achieved by the physical deformation of strain gauges, which are bonded into the diaphragm of the pressure transducer, and wired into a Wheatstone bridge configuration.
Pressure applied to the pressure transducer produces a deflection of the diaphragm, which introduces strain to the gages.
The strain will produce an electrical resistance change proportional to the pressure.
2. Technical Parameters
| Signal Output | 0~5V,1~5V, 4-20mA, 0-10mA, 1-10KHz |
| Pressure Range | -0.1~0~0.02~100MPa |
| Compensation Temperature | -10~70℃ |
| Medium Temperature | -40~125℃ |
| Ambient Temperature | -40~85℃ |
| Shell Protection | IP65 |
| Pressure Type | Meter Pressure, Absolute Pressure, Sealing Pressure |
| Accuracy | ±0.1%, ±0.3%, ±0.5% |
| Stability | ≤±0.5%FS per year |
| Zero Temperature Drift | ±0.03%FS per year |
| Overload Pressure | 200%FS |
| Fixed Frequency | 5KHz~650KHz |
3. Configuration
| Type | Specification Code | Illustration |
| ML2¨¨¨A | --------------------------------- | Pressure Transmitter |
| Transducer | 0-------------------------------- | Diffused Silicon Transducer |
| Accuracy | 8-------------------------------- | ±0.5% |
| Output | C-------------------------------- | 4-20mA |
| G-------------------------------- | Other Requirements,Contact Us. | |
| A-------------------------------- | ||
| Contact Medium Mode | G-------------------------------- | High Temperature Heat Radiation Type(0-200℃) |
| P-------------------------------- | Flat Diaghragm Contact Type | |
| L-------------------------------- | Thread Connection * | |
| Connection Mode | K-------------------------------- | Clamp Connection |
| M-------------------------------- | M20x1.5 * | |
| Q-------------------------------- | Other Thread Connection (Note 1) | |
| Measuring Range | 1-------------------------------- | 0-5~35KPa |
| 2-------------------------------- | 0-35~100KPa | |
| 3-------------------------------- | 0-50~200KPa | |
| 4-------------------------------- | 0-100~350KPa | |
| 5-------------------------------- | 0-200~700KPa | |
| 6-------------------------------- | 0-0.5~2.1MPa | |
| 7-------------------------------- | 0-1~3.5MPa | |
| 8-------------------------------- | 0-3~7MPa | |
| 9-------------------------------- | 0-7~21MPa | |
| 0-------------------------------- | 0-15~40MPa | |
| Y-------------------------------- | Specific Range | |
| Display Header | L-------------------------------- | Common LED Header |
| Z-------------------------------- | Pointer Header | |
| N-------------------------------- | No Header * | |
| Electrical Connection | 5-------------------------------- | M20x1.5 Waterproof Concentrator |
| Power Supply | -A-------------------------------- | 24VDC |
| -B-------------------------------- | 12VDC | |
| Additional Type | -NF1---------------------------- | Ex-proof Certificate: Exd II CT6 |
| -NS1---------------------------- | Intrinsic Safety Type: Exi II CT4 | |
| -M-------------------------------- | Other Requirements (Note2) | |
| Remarks: | ||
| e.g.:ML208CALM6N-A-NF1 0-1.6MPa | ||
| Note1: Please indicate the thread size behind type if you choose this code | ||
| Note2: Please note in order | ||
| *: Standard | ||
4. Pressure Level Transmitter
Pressure Transmitter
Differential Pressure Transmitter
Capacitance Level Transmitter
Hydrostatic Level Transmitter
Submersible Level Transmitter