1
INTRODUCTION
MPS-2 & MPS-6
1.2
Specifications
Water Potential
Range:
−
9 to
−
100,000 kPa (pF 1.96 to pF 6.01)
1
Resolution: 0.1 kPa
Accuracy:
MPS-6:
±
(10% of r 2 kPa) from
−
9 to
−
100 kPa
1
MPS-2:
±
(25% of r 2 kPa) from
−
9 to
−
100 kPa
1
Temperature
Range:
−
40
◦
C to 60
◦
C
Resolution: 0.1
◦
C
Accuracy:
±
1
◦
C
General
Operating Temperature:
−
40 to 60
◦
C,
2
0 to 100% RH
Operating Temperature: 0 to 60
◦
C (no water potential measure-
ment below 0
◦
C)
Power Requirements: 3.6 to 15 VDC, 0.03 mA quiescent,
10 mA max during 150 ms measurement
Dimensions: 9.6 cm (L) x 3.5 cm (W) x 1.5 cm (D)
Sensor Diameter: 3.2 cm
Dielectric Measurement Frequency: 70 MHz
Measurement Time: 150 ms (milliseconds)
Output: RS232 (TTL) with 3.6 volt levels or SDI-12 communication
protocol
1
Please see Section 4.1 of this manual for more detailed information on range
and accuracy at lower water potentials.
2
Customers may use sensors at higher temperatures under certain conditions,
please contact Decagon for assistance.
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