Sensors
©
2020
–
Valeport Ltd
Page | 2
2
Sensors
2.1
Pressure Sensor
The miniIPS2 and 2e are fitted with the following sensors:
•
A high accuracy, 0.01% of full scale, temperature compensated piezo-resistive pressure transducer.
•
The Pressure Module is interchangeable
Sensor Type
Strain Gauge
Range:
individual modules
10, 20, 30, 50, 100, 200, 300, 400 or 600 Bar
1 bar is approximately equal to 10m depth
Resolution:
0.001% of full range
Accuracy:
±0.01% or full range
Response Time:
1 millisecond
2.2
Interchangeable Pressure Sensor Modules
The Interchangeable Pressure Sensor Modules can be swapped to best suit the operational depth of the
project. The accuracy of the sensor is a factor of the full-scale capability of the sensor - 0.01% and not the
measured pressure. A 600 Bar module will offer the same ± 0.60m accuracy at 6000m as it will at 250m
while a correctly selected 30 Bar Pressure Module, for an operation at 250m, will provide an accuracy ±
0.03m
Bar
Maximum Operational Depth
(metres)
Accuracy (0.01%)
(± metres)
10
100
0.01
20
200
0.02
30
300
0.03
50
500
0.05
100
1000
0.10
200
2000
0.20
300
3000
0.30
400
4000
0.40
600
6000
0.60
Prior to changing out a Pressure Module the mini IPS 2 or 2e should be thoroughly rinsed in fresh water and
dried.
A Pressure Module should ideally be changed in dry lab conditions but if this is not possible every effort
must be made to keep water out of the module socket. If water does get in, it must be dried before a
replacement module is fitted to protect the connector from corrosion.
A special tool is provided to unscrew the fitted module and screw its replacement securely into place.
Never use excessive force.
