
(3/8)
002-01 / 20070227 / eb461_ts.fm
All specifications are subject to change without notice.
2-TERMINAL TYPE SEPARATE EXCITATION OSCILLATION FORMULA, TSP SERIES
PRINCIPLES OF OPERATION
A vibrator, comprising a piezoelectric element attached to a metal-
lic diaphragm, is supported by a die cast case. The vibrator is
driven by an external excitation oscillation circuit.
When the vibrator comes into contact with powder, the vibrator’s
oscillation is impeded, causing the vibrator to stop and hence the
powder to be detected.
The external excitation oscillator circuit and phase comparator cir-
cuit etc. are driven by a TDK custom chip.
These products are available in two types: The "External chip" type
in which all the circuitry is provided in a separate chip and the sen-
sor consists only of the vibrator element, and the "Internal chip"
type in which the signal processing is performed inside the sensor
to provide a binary output of high/low levels.
ELECTRICAL CHARACTERISTICS
BUILT-IN IC TYPE
SHAPES AND DIMENSIONS
CIRCUIT DIAGRAM
Comparator
circuit
Cariculation
process
Amplifier
Rectifying
circuit
Sweep
oscllation
IC
inclusion
type
IC
un-inclusion
type
Phase
detection
Item
Standard
Operating input voltage
5V±0.5V
Input current
20mA max.
Operating temperature range
0 to 50°C
Sensor level
5mm±3mm
Output voltage HIGH
4.5V min.
Output voltage LOW
0.5V max.
Lot
No.
Pin No.3
Pin No.2
Pin No.1
43
8
±0.2
6
0.5
2
4
10
11
8.8
14
4
7.8
17
4
12.5
25
±
0.2
2-C2
2-3.3
2-6
Dimensions in mm
Sensor
IN
OUT
GND
4.7k
V
5V