RT8420
Rotational Transducer
RT8420
▼ Up to 200 Turns
▼ Industrial Grade
▼ 4...20 mA Output Signal
Specification Summary:
GENERAL
Full Stroke Ranges .............................. 0-0.125 to 0-200 turns, see next page
Output Signal ................................ 4 - 20 mA (2-wire), 0 - 20 mA (3-wire), see
Accuracy ...................................................... + 0.30 to +0.15% full stroke, see
Repeatability ................................................................ + 0.05% full stroke, max.
Resolution ............................................................................... essentially infinite
Enclosure Material ............... powder-painted aluminum or stainless steel, see
Sensor .................................................... plastic-hybrid precision potentiometer
Shaft Loading ................................................ up to 10 lbs. radial and 5 lbs. axial
Starting Torque (25ºC) ................................................................ 2.0 in-oz., max.
Weight, Aluminum (Stainless Steel) Enclosure ....................... 3 lbs. (6 lbs.) max.
ELECTRICAL
Input Voltage ................................................................................. 12 to 40 VDC
Input Current ................................................................................... 20 mA, max.
Loop Resistance (Load) .......................... (loop supply voltage - 12 ) / 0.02, max.
Circuit Protection ...................................................................... 38 mA maximum
Impedance ................................................................. 100 MΩ @ 100 VDC, min.
Zero and Span Adjustment ............................................................. 2:1 turndown
ENVIRONMENTAL
Enclosure Design ................................ NEMA 4/4X/6, IP 65/67/68, see and
Operating Temperature ............................................................... -40o F to 200oF
Thermal Effects
Zero ........................................................................ 0.01% full stroke / oF, max.
Span ........................................................................................ 0.01% / oF, max.
Vibration ............................................................... up to 10 G's to 2000 Hz max.
EMC COMPLIANCE PER DIRECTIVE 89/336/EEC
Emission / Immunity ..................................................... EN50081-2 / EN50082-2
Additionally, the RT8420 has fully accessible
zero and span settings allowing precise
matching of the output signal to the required
measurement.
DETAIL
2.66 [67.6]
0.38 [9.7]
0.250 [6.35]
1.00 [25.4] 0.92 [23.4]
!
Electrical Output Signal:
0.2497 in. or 5.995 mm
0.2494 in. or 5.970 mm DIA.
20 mA
SEE DETAIL
1.25 [31.8]
2.49 [63.2]
4 mA
#10-32 x 0.38 or optional
M6 x 9.7 equally spaced at 120 degrees
apart on a 2.00 [50.8] dia. BC
OUTPUT SIGNAL (milliamperes)
4.04 [102.6]
Celesco’s model RT8420 provides extended
rotational position feedback from as little as
1/8 of a turn f.s. all the way up to 200 turns
f.s. The RT8420 combines the superb linearity and resolution of a plastic-hybrid
potententiometer with the durability of
Celesco’s 4...20 mA circuit to oprovide an
accurate and reliable electrical signal over all
ranges.
FULL STROKE RANGE
clockwise shaft rotation
counter-clockwise shaft rotation
!
! align marks for zero output
2.63 [66.8] SQ.
Latin Tech, Inc.
ALL DIMENSIONS ARE IN INCHES [MM]
www.lt-automation.com • info@lt-automation.com
11
RT8420 • Rotational Transducer • 4...20 mA Output Signal
▼ Ordering Information
Model Number:
RT8420-
R
order code:
Full Stroke Range:
-
A
B
1 - 1
C
D
E
0
F
G
R order code:
clockwise shaft rotations, min:
accuracy (% of f.s.):
potentiometer cycle life*:
R125
0R25
0R50
0001
0002
0003
0005
0010
0020
0030
0.125
0.25
0.50
1
2
3
5
10
20
30
R order code:
clockwise shaft rotations, min:
accuracy (% of f.s.):
0040
0050
0060
0080
0100
0120
0140
0160
0180
0200
40
50
60
80
100
120
140
160
180
200
0.30 %
0.20 %
2.5 x 106
5 x 105
0.15 %
2.5 x 105
0.15 %
potentiometer cycle life*:
2.5 x 105
*note: potentiometer cycle life is defined as the minimum number of times the sensor can be cycled back and forth, from beginning to
end, before any measureable degradation of the output signal occurs.
Enclosure Material :
A order code:
enclosure material:
1
2
powder-painted aluminum
303 stainless steel
Mounting Configuration:
B order code:
shaft diameter:
mounting holes:
1
2
0.25 inch diameter
10-32 x 0.25 in.
6 mm diameter
M6 x 10 mm
Output Signals:
E order code:
output signal configuration:
1
2
3
4
4...20 mA, 2-wire
20...4 mA, 2-wire
0...20 mA, 3-wire
20...0 mA, 3-wire
20 mA
20 mA
20 mA
4 mA
max ccw
rotation
max cw
rotation
max ccw
rotation
12
4 mA
0 mA
max cw
rotation
max ccw
rotation
20 mA
0 mA
max cw
rotation
max ccw
rotation
max cw
rotation
RT8420 • Rotational Transducer • 4...20 mA Output Signal
Electrical Connection:
F order code:
electrical connection:
1
2
3
4
6-pin plastic connector
and mating plug
10 ft. waterproof cable
6-pin metal connector
and mating plug
25 ft. instrumentation cable
MS3106E-14S-6S
5/16" (8 mm) max cable dia.
16 AWG max conductor size
MS3106E-14S-6S
5/16" (8 mm) max cable dia.
16 AWG max conductor size
3-CONDUCTOR, 18 GA., TYPE SJOW-A
~0.35 in. (9 mm) dia.
~ 3.2 in. (81 mm)
MS3102E-14S-6P
connections
A
B
F
C
E
D
IP rating:
NEMA rating:
connections
2-wire 3-wire
12...40 VDC
4...20 mA out
common
case ground
A
B
n/a
D
A
C
B
n/a
12...40 VDC
4...20 mA out
common
case ground
WHT
BLK
n/a
GRN
67, 68*
6, 4X**
Specifications:
R
- 1A 1 B 1 C - 1 D 1 E 1 F 0 G
Full Stroke Range:
Enclosure Material:
Shaft Diameter:
Mounting Holes:
Output Signal:
Electrical Connection:
n/a
n/a
n/a
n/a
connections
A
B
F
C
E
D
5 turns (5 clockwise shaft rotations)
powder-painted aluminum
0.25 inches
10-32 x 0.250 in.
500 ohm voltage divider
6-pin plastic connector
13
connections
2-wire 3-wire
12...40 VDC
4...20 mA out
common
case ground
65
4
**applies to stainless steel enclosure, see
▼ Sample Model Number
order code:
contact view
2-wire 3-wire
67
6, 4X**
note: *requires factory submersion test
RT8420- 0005
~0.2 in. (5 mm) dia.
~ 3.2 in. (81 mm)
MS3102E-14S-6P
contact view
MULTICONDUCTOR, 24 GA., SHIELDED
A
B
n/a
D
A
C
B
n/a
2-wire 3-wire
12...40 VDC
4...20 mA out
common
case ground
67
6
RED
BLK
n/a
GRN
RED
BLK
WHT
n/a
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertising