Measurement Principle
The position of the wire, materialized through a special enlargement of the wire itself , is detected by three laser sensors, in the not visible range, arranged at 120 ° from each other.
The three measured distances are processed by electronic equipment which provides readings of the two coordinates, orthogonal to each other (X and Y) and a series of tests validating the measurements.
The system is completely static. The test of the measures is possible thanks to the redundancy of the measures. With this project, an innovative coordinometer has been created, with very simple technology and able to survive harsh environmental conditions.
The device is completely devoid of moving parts. The laser sensor comes from current industrial production and was developed for the monitoring of industrial processes.
This instrument has been designed and manufactured taking into account the size of instruments already in use in many dams (see relevant notes below)
To replace any existing coordinometers, with compatibility of the base, just unclip the pendulum wire , remove the old coordinometers, replace with the new ones and reconnect the plumb wire.
Regarding the sensor, before being used in the new instrument, it was subject to various tests, designed to select the most suitable product for the specific requirements , with particular regard to accuracy, repeatability and inherent strength.
Inside the instrument are three heaters to heat the measuring environment and avoid the formation of condensation.
The prototype has been subjected to trial tests simulating the instrument’s normal working conditions, with long-term tests directly in the dam.
On the micrometer bench, repeatability and accuracy of measurement has been properly tested.
Technical Specifications
| N° sensors |
3 |
| Material of the housing plate of sensors |
Anticorodal 6082 |
| Measured size |
Planimetric displacement on the two coordinates of the plumb wire |
| Method of measurement |
Measure without contact with distance sensor |
| Range |
± 25 mm in the two directions Mountains Valley and Left and Right (you can reach ± 35mm with less accuracy) |
| Resolution |
0,01 mm |
| Linearity |
≤ ±0,1mm |
| Global error of measurement |
± 0,2 mm |
| Operating temperature of the laser |
-5 ÷ +50 °C |
| Storage temperature |
– 25°C ÷ +65°C |
| Power Supply |
– electronic board: 24Vdc e/o 24Vca
– heather group: 24Vac |
| Absorption |
– electronic board: 10 VA
– heather group: 60 W |
| Output signal |
– n. 2 analogue output (one for each axis): 4-20mA
– digital: RS232 o RS485 o RS422 |
| Enlargement of the plumb wire |
80 mm |
| Dimensions |
420 x 385 mm |
| Level |
Present |
Support base
| Material |
Stainless steel AISI 316 |
| Possible displacements to center the instrument |
± 15 mm |
Alarm signals
Output relay, close contact, shows one of the following problems
Accessories and spare parts
| Support Base |
For new application |
| Device for wire junction |
In case it would be possible to remove the wire without cutting it |
| Support conical feet |
Spare parts or accessories for the application of the coordinometer in removable fixed position |
| Laser Sensor |
Spare element of the sensor group |
Related products
| EGS-2C Portable Electronic Telependulum |
Removable electronic and optical instrument for manual measurements |
| Base for EGS-2C Telependulum |
Support base for EGS-2C telependulum |
| Optical Coordinometer |
Removable optical instrument for manual readings |
| Pair of tablets for optical coordinometer |
To manufacture the base of the optical coordinometer |
| Control Bench for optical coordinometer |
Bench for the periodic control and the calibration of optical coordinometer |
Technical Assistance
If you have any requests or questions about our instruments or if you have special needs that require different solutions from the standard, please contact us. Our team will provide all the necessary information and will be very happy to work with you to study, develop and customize instruments and solutions suitable for your specific needs.
All information in our datasheet is subject to change without prior notice.
Please check the datasheet/details carefully and contact Pizzi Instruments for further information
