| Operating
Principle |
Ultrasound
reflection time of flight through air measurement |
Number
of
transducers |
1
or 2 depending on measurement requirements |
| Transducer
type |
Air
coupled compression probe, 64 kHz.. 1 MHz types
(Transducers in the 500
kHz - 1 MHz range are used with
separate pre amplifiers for improved noise immunity) |
| Temperature
compensation |
Dual
sensor, 1 for each transducer |
| Air
temperature range |
0..
40¡É. |
| Measurement
modes |
Distance
via transducer 1 / 2
Thickness using reference surface via transducer 1 / 2
Thickness using two opposite transducers with automatic calibration. |
| Measurement
range |
0..
200 mm. |
| Measurement
speed |
100..
5000 measurements per second (limited by probe distance) |
| Resolution |
0.01
mm. |
| Accuracy |
Depending
on airflow and instrument setting, ¡¾0.05 mm typical on
a range of
0.. 30 mm, ¡¾0.1 mm and more on range > 30 mm. |
| Filtering |
Average
(range 1.. 1000 measurements), noise burst suppression,
alarm filtering, see alarm specification. |
| In
/ Outputs |
RS232
: Single module computer interface for data and setup.
RS485 : Multi channel link for data and setup (up to 16 units).
Analogue : 2 analogue outputs with scaling, 0.. 10 V. |
| Alarm |
2
relays with programmable thresholds and alarm modes. |
| Alarm
filtering |
1..
100 consecutive limit violations before alarm relays activate. |
| Alarm
modes |
Relay
1 : value > setpoint 1, Relay 2 : value > setpoint 2
Relay
1 : value > setpoint 1, Relay 2 : value < setpoint 2
Relay 1 : value
< setpoint 1, Relay 2 : value < setpoint 2
Relay 1 : value
< setpoint 1, Relay 2 : value > setpoint 2
Relay activation can be realtime or latched |
| Hysteresis |
0..
10% of setpoint value. |
| Inputs |
Alarm
reset, start measurement (via optocouplers) |
| Encoder |
Quadrature
or clock / direction, used for measurement
synchronisation. |
| Power
supply |
12
V DC +/- 10% @ 0.5 A max. |
| Connector |
DIN
41612 Male |
| Enclosure |
19
inch module 3 HE, width 51 mm, dept 175 mm. |
| Software |
Configuration
package for WIN98, WIN2000, Custom software on
request. |