www.microsensorcorp.com V1.0 12/2021
MPM4706
Digital Level Transmitter
Features
• Extremely low consumption and available
for auto stand-by mode
• Integrated temperature measurement
• Digital compensation and non-linearity
correction
• RS485 communication interface
• Suitable for networking
• Stainless steel housing, compact and light
• Customizable
Introduction
MPM4706 digital level transmitter is a highly precise and stable
digital transmitter for the level measurement. This product utilizes
the highly reliable piezoresistive OEM pressure sensing element
and the high precision digital processing circuit, coupled with a
dedicated algorithm, the transmitter is capable of high precision
measurement. The product supports the measurement of both
level and temperature and communicate via an RS485 interface.
The transmitter consumes very low power and automatically
enters standby mode when not communicating, and the power
consumption at standby mode is as low as 10uA.
Specications
Measured range 0~
3
.5...200 mH
2
O
Over pressure 1.5 × FS
Total accuracy
a
±0.25%FS
（
-10
℃～
70
℃）
Temperature
accuracy
b
±0.5
℃（
-20
℃～
80
℃）
±0.75
℃（
-30
℃～
-20
℃）
Power supply 3.6V
～
28V DC
Output signal RS485 (ModBus RTU or ASCII)
Compensation
temperature
-10
℃～
70
℃
Operation
temperature
-10
℃～
70
℃
Storage
temperature
-20
℃～
85
℃
Long-term
stability
±0.25%FS/year
Load
RS485 terminal can cascade up to 99
transmitters
Insulation
resistance
100MΩ@500V
Vibration 20g
，
20Hz
～
2000Hz
Shock 20g
，
11ms
Weight ~210g
Protection class IP68
Wetted material
Diaphragm: Stainless steel 316L
Housing: Stainless steel 304
O-ring seal: Viton
a
Total accuracy: including non-linearity, hysteresis, repeatability, and
temperature error.
b
Temperature accuracy: measured temperature is ambient
temperature.
02
MPM4706 Digital Level Transmitter
www.microsensorcorp.com V1.0 12/2021
Outline Construction
(Unit: mm)
Electric Connection
Transmitter connection diagram see the table below.
Electrical denition Wire Color
+V Red
-V Black
RS485A Yellow(Green)
RS485B White
Assistance Software
RS485 Communication Software
MS Setonline 3.00 communication software can be used to read
the basic information (including level range and temperature
compensation range, version, etc.) of the transmitter with RS485
interface, display the actual level value, set the new zero point,
congure the analog output, and set the instrument address with
the assistance of a RS485 conversion module.
Note:
The "MS Setonline 3.00" software can be downloaded from Micro
Sensor website.