10
2.3 Pin Assignment of the Connector (only Code 232)
To assure immunity to random
noise, the measuring head must
be installed in such a way that it is
insulated from ground (GND).
The shield of the connecting cable
must be connected to the metal
housing of the connecting plug.
Pin
No.
Signal
Description
1
Not assigned
2
Not assigned
3
GND
Ground
4
GND
Ground
5
Vcc
Vcc
6
Not assigned
7
TXD
TRANSMITTED DATA
8
RXD
RECEIVED DATA
9
GND
Ground - RS-232
2.2 Specifications of the FS-232 and FS-USB Series
Calibration
:
According to SCHMIDT factory procedure
Accuracy
:
For 10% to 100% of range: ± 1% FS*
Other calibration material: ± 3% FS* or better
Overload Protection
:
100% of range
Measuring Principle
:
Strain gauge bridge
Meas. Roller Deflection
:
0.5 mm, max.
Natural Frequency of
Measuring Spring
:
Approx. 500 Hz, depending on tension range
Signal Processing
:
Digital, 24 bit A/D converter, sample time max. 5000 /s
Internal averaging up to 1 s
Communication Frequency
: Approx. 100 readings /s
Output Signal
:
Code 232: 57600 Baud, 8 bit, none Pariti, 1 stopbit,
ASCII communication, 200 readings/s
Code USB: 152000 Baud, 8 bit, none Pariti, 1 stopbit,
ASCII communication, 500 readings/s
Temperature Coefficient
:
Zero point: less than ± 0.05% FS* / °C
Temperature Range
:
10 - 45 °C
Air Humidity
:
85% RH, max.
Power Supply
:
Code 232: 15 to 24 V DC, 50 mA (regulated)
Code USB: no external power supply is required
Housing
:
Aluminium
*Full Scale
5 4
3 2
1
9
8
7
6
