MD 127 is a sewage water resistant, stainless steel encapsulated, submersible, hydrostatic level sensor of very high accuracy and over pressure capability. It is designed for level measurement in liquids like stormwater and wastewater in pump sumps. When connecting the 2-wire loop powered sensor in series with a DC power supply, the MD 127 gives a 4 to 20 mA output signal which is proportional to the level of the liquid.
The output signal can be connected to the mA – input of set point relays, chart recorders, indicating instruments, PLC, pump-controls, etc. The number of devices in series and the length of the cable from sensor to the devices is dependant on the supply voltage.
The ceramic sensing element can withstand very high overpressures without damage.
Key characteristics
Measuring Range
Max. Overpressure
Cable Length
0 – 1.0 mH2O
4 bar
10 m
0 – 2.0 mH2O
6 bar
10 m
0 – 2.0 mH2O
6 bar
25 m
0 – 4.0 mH2O
6 bar
10 m
0 – 4.0 mH2O
6 bar
25 m
0 – 10 mH2O
10 bar
15 m
0 – 10 mH2O
10 bar
25 m
0 – 20 mH2O
10 bar
25m
0 – 40 mH2O
25 bar
45 m
Technical specifications
Description
Cable
PE, shielded
Housing
Stainless steel 1.4404
Sensor
Ceramic AL203 ,gold coated
Output signal
4 – 20 mA, 2-wire, fixed to the sensors measuring range
Accuracy
≤ ±0.2 % FS @ 25 °C
Response time
200 ms
Supply voltage
9…30 V DC
Ambient temperature
-25…80 °C
Temperature coeff.
≤ ± 0.02 % FS/K (Zero)
Long term stability
≤ ± 0.2 % FS p.a.
Protection
P 68
Weight of sensor
approx. 0.5 kg
Weight of cable
0.5 kg / 10 m
Electrical connection shielded
PE cable with pressure compensation capillary and filter
SUBMERSIBLE DRAINAGE PUMP J 12