LMD series level-difference meter is equipped with one host and two probes, the probes placed in the upper before and after every evil gate, measuring the levels and the host calculates the difference level value. Mainly used in a liquid level difference before and after the water conservancy facilities, such as sewage treatment plant's sedimentation tank, DAMS, etc.
Features
Separate probes are easy to install, host installation location is flexible and easy to operate.
Ultrasonic probe using PVC or PTFE materials for a variety of corrosive conditions, sanitary type is optional.
With the patents of Smart echo processing technology to ensure the accuracy and stability.
Patented ultrasound probe structure with short blind range, high sensitivity, build-in with full range of automatic temperature compensation.
Maximum length allowed for the probe cable 1000m, super anti-electromagnetic interference.
6 relays at most, MODBUS, HART, PROFIBUS-DP protocol, and other functions.
Electric heating probe for cold regions.
Can be flexibly customized according to customer demand.
Technical Parameter
| Model | LMD |
| Measuring range | (0~40m)based on different types of probes |
| Accuracy | 0.2% Full span (In air) |
| Output Current | Two ways outputs:DC4~20mA |
| Output Load | 0~500Ω |
| Output Resolution | 0.03% Full span |
| Mode of Indication | 14 Digit LCD in 2 rows with backlight |
| Display Resolution | 1mm/1cm |
| Relay Output | high or low alarm/control (Level or Level-difference) |
| Fault Relay | Level fault detection alarm |
| Relay Mode | Normal open |
| Relay Type | 5A 250VAC/30VDC |
| Relay No. | 2~4 |
| Serial Communication | RS485 (optional) |
| Baud Rate | 19200/9600/4800 |
| Power Supply | DC21V~27V 0.1A |
| AC85~265V,0.05A | |
| Temperature compensation | The whole range is automatic |
| Temperature Range | -40 ºC ~+75 ºC |
| Measure Cycle | 1.5second (tunable) |
| Parameter set up | 3 induction buttons |
| Cable Fix | PG13.5/PG11/PG9 |
| Crust Material | ABS |
| Protection Grade | IP67 |
| Mode Installation | Fixed installation |
