Soil Moisture Transmitter
MTR-730 Series
User’s Guide
A. Specifications
Model No.
MTR-731
MTR-732
Measuring Range
Moisture:
0.0 ~ 100.0% output scale
True read: 6.0~56.0% WME
Moisture:
0.0 ~ 100.0% output scale
True read: 6.0~56.0% WME
Temperature:
-40 ~ +60
C
Accuracy (At 25
C)
Reference of Mineral Soils
Moisture:
2%
Temperature:
±
0.4
℃
Moisture:
2%
Long-term Stability
Better than 1% per year (Typical)
Temp. Compensation
0.02% /
C (Effect @ 0% RH)
Response
Approx. 3 seconds
Output
Moisture scale: 0~100%
Temp. scale: -40~+60
℃
Current output: 4~20mA Two wire
Temperature:
Current output: 4~20mA Two wire
Moisture:
Current output: 4~20mA Two wire
Supply Voltage
12 ~ 40V DC, >150mA
Ambient Temperature -40 ~ +60
C
Housing/Protection
ABS plastic watertight enclosure (IP 65), Probe: SUS304 or SUS316
Weight
Approx. 190g
Dimensions
Instrument:
φ
90
×
54(H) mm
Probe:
φ
8
×
150(L)mm
※
Specifications are subject to change without notice.
B. Ordering Information C. External Dimensions
Model
Descriptions
MTR-731 Soil Moisture transmitter
MTR-732 Soil Moisture & Temperature transmitter
※
Standard specification of probe:
φ
8
×
150mm
※
Length of probe is available upon request
Max. L=1500mm