PICK-UP
DATA SHEET
FNL
The Pick-up is a device utilizing an induction potentiometer and designed for converting an angle of rotation into
electrical signals. The input axis is mechanically turned at a
certain angle and this rotation is then converted into electrical signals of 4 to 20mA DC. It is ideally suited for use as
a displacement type transmitter.
FEATURES
1. High reliability
Use of a contactless induction potentiometer assures a
long life and high reliability.
2. Various specifications available
The Pick-up can be equipped with flameproofing, intrinsically safe explosionproofing, a large indicator, an arrester and other devices.
3. Easy maintenance and handling
The Pick-up is compact and lightweight, and zero and
span adjustments plus output signal checks can all be
easily made on the front panel.
Front view
SPECIFICATIONS
Input angle of rotation:
0 to 22.5°, 0 to 90° or 0 to 270°
Excessive input rotation angle:
Approx. 11° (at 0 to 22.5° or 0 to 90°)
Approx. 4° (at 0 to 270°)
(Rotation is restricted below 0 or above
100%)
Input rotation torque:
Less than 0.02N∞cm{2.04gf∞cm}
Direction of rotation:
Counterclockwise (when viewed from a
point facing the shaft extension) or clockwise
Output signal:
4 to 20mA DC
Allowable load resistance:
0 to 550Ω (at 24V DC)
Power supply:
13 to 33V DC
(26V DC or less with intrinsically safe
explosionproofing)
(27V DC or less with arrester)
Wiring system: 2 wire system
Ambient temperature:
–30 to +80°C
(50°C max. with intrinsically safe
explosionproofing)
(60°C max. with arrester)
(70°C max. with flameproofing)
Back view
Response speed: Time constant of 0.1 sec or less
Zero and span adjustment width:
± 5%
Waterproof structure:
JIS C 0920 immersion-proof type
(Note that input shaft section is not of
sealed structure. A 70mm dia. seal 0 ring
must be used on its circumference)
Explosionproof structure:
Intrinsically safe explosionproofing JIS
i3nG5
Flameproofing JIS d2G4
EDS8-3e
Date
Apr. 10, 1992
FNL
External dimensions (HxWxD):
150 x 183 x 167 (197)mm
Dimension in parenthesis is when field
indicator is equipped
Mass (weight): Approx. 2.7kg
Conduit connection:
G1/2
Finish color:
Silver (epoxy and polyurethane double
coating)
(Lid alone is back, N3, when field indicator is equipped)
Optional specifications
Characteristics:
(Indicated in % of span for standard product)
Allowance:
Max. ± 0.5% at 0 to 22.5 °
Max. ± 1.0% at 0 to 90 °, or 0 to 270 °
Linearity:
Max. ± 0.5% at 0 to 22.5 °
Max. ± 1.0% at 0 to 90 °, or 0 to 270 °
Repeatability:
Max. ± 0.1%
Ripple content: ± 1.5% peak to peak (at approx. 25 kHz)
Temperature effect (zero point):
1.2%/60°C span at 0 to 60 °C
Power supply fluctuation (zero point):
0.04%/2V
Field indicator:
Built-in electronics casing 1.5 class
0 to 100% linear or square scale
Arrester:
Built-in electronics casing
Acid and alkaliproof treatment:
Mounting screws and washers, SUS304
Scope of delivery:
Main unit
FUNDAMENTAL BLOCK DIAGRAM
Input
rotation
angle
Induction
potentiometer
Synchronous
rectifier
circuit
Oscillating
circuit
2
Differential
amplifier
circuit
Current
converter
circuit
Signal
current
CODE SYMBOLS
1 2 3 4 5 6 7 8
9 10
F NL
0
4
Description
Input rotation angle, rotating direction
Input rotation Rotating direction(*) Remarks
angle
11
12
2
2
3
4
4
0 to 90°C
1
2
1
1
2
0 to 22.5°C
0 to 22.5°C
0 to 270°C
CCW
CW
CCW
CW
CCW
CCW
CW
Zero point stopper equipped (impossible without case)
Enclosure, indicator, arrester, output signal
Field indicator
Explosionproof
0A
1A
1K
1D
1L
1G
1M
1B
1E
1H
2A
2K
2D
2L
2G
2M
3A
3K
3D
3L
3G
3M
Without case
Non-explosionproof
Intrinsic safety (JIS i3nG5)
—
Flameproof (JIS d2G4,
Flameproof threaded-joint
metal conduit type)
—
—
Flameproof (JIS d2G4,
Flameproof packing type)
Y
B
Yes/No
—
—
—
—
—
Scale
—
—
—
0 to 100% linear
0 to 100% linear
0 to 100% square
0 to 100% square
—
0 to 100% linear
0 to 100% square
—
—
0 to 100% linear
0 to 100% linear
0 to 100% square
0 to 100% square
—
—
0 to 100% linear
0 to 100% linear
0 to 100% square
0 to 100% square
Arrester
—
—
Output signal
4 to 20mA DC
4 to 20mA DC
—
—
—
—
—
—
4 to 20mA DC
4 to 20mA DC
—
—
—
4 to 20mA DC
—
—
Treatment
Standard
Acid and alkaliproof treatment
Note: *The rotating direction refers to rotation when viewed from a point facing the shaft
extension:
CW: clockwise
CCW: Counter-clockwise
3
FNL
PRINCIPLE OF INDUCTION POTENTIOMETER
Shortring ring
Ring core 1
Ring core 2
Detecting coil
Air gap
S1
S2
Exciting coil
Synchronous
rectifier
Amplifier
Output
When the shorting ring is located at the center, the magnetic flux at left and right is equal and the voltages produced
at detecting coils S 1 and S2 are equal. But if the ring is
rotates to the right for example, then the flux at S 1 increase
and that at S2 will decrease. This difference is produced
and converted into an output voltage proportional to the ring
displacement (input rotation angle).
EXAMPLE OF CONFIGURATION ACCORDING TO POWER SUPPLY
Pick-up
FNL
Receiving
instrument
Distributor
PXM
4 to 20mA DC
1 to 5V DC
24V DC
System power
Supply PXJ
With 24V DC power supply
100V AC
Pick-up
FNL
4 to 20mA DC
With 100V/24V AC power supply
4
Receiving
instrument
Distributor
PWM
1 to 5V DC
100V AC
or 24V AC
OUTLINE DIAGRAM (Unit:mm)
Viewed from P
190
108
O ring
(for sealing)
58
φ76
Up
A
Conduit connection
Shround
(flameproof only)
88
150
Down
Field indicator
(Optional)
*
Cable gland
150
*B
Conduit connection
3.5
Details of pointer
When field
indicator equipped
58
3
φ102
–0.007
(30)
φ2.5 –0.016
Zero adjustment
147
M3
68
Details of "B"
5
5
20
ø13
ø15
–0.036
16
17
φ70 –0.060
CONNECTION DIAGRAM
RELATED DEVICES
Opener
E
0–
Mounting screw
4-M6
P
G1/2
G1/2
6
Details of "A"
15
8
20± 0.2
Distributor
0+
Load
0 to 550Ω
24V DC
ORDERING INFORMATION
1.
2.
3.
4.
Product name
Code symbols
Angle of rotation
Direction of rotation
5. Whether explosionproofing, arrester,
indicator necessary
6. Other requirements
5
FNL
Caution on Safety
*Before using this product, be sure to read its instruction manual in advance.
Head Office
Gate City Ohsaki, East Tower, 11-2, Osaki 1-chome,
Shinagawa-ku, Tokyo 141-0032, Japan
http://www.fesys.co.jp/eng
Instrumentation Div.
International Sales Dept.
No.1, Fuji-machi, Hino-city, Tokyo, 191-8502 Japan
Phone: 81-42-585-6201, 6202 Fax: 81-42-585-6187
http://www.fic-net.jp/eng
Information in this catalog is subject to change without notice.
Printed in Japan