PT420

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PT420 | Manualzz

Cable-Extension Position Transducer

Short to Medium Range

4...20 mA Output

PT420

The PT420 is available with full-scale measurement ranges from 2 to 100 inches, providing a 0/4-20 mA feedback signal that is linearly proportional to the position of a traveling stainlesssteel extension cable. Use the PT420 to provide position feedback on hydraulic cylinders in factories and utilities, gate position in fresh or wastewater distribution systems, or valve opening in process-related applications.

Specifications:

GENERAL

Full Stroke Ranges ................................... 0-2 to 0- 100 inches, see ordering info.

Output Signal .................. 4 - 20 mA (2-wire), 0 - 20 mA (3-wire), see ordering info.

Sensitivity, 2-wire ......................................................... 16 mA/full stroke,

±

0.25%

Sensitivity, 3-wire ......................................................... 20 mA/full stroke,

±

0.25%

Accuracy

2 and 5 Inch Ranges ..............................................................

±

0.28% full stroke

10, 15, 25 Inch Ranges ...........................................................

±

0.18% full stroke

20, 30 Inch Ranges and Greater .............................................

±

0.15% full stroke

Repeatability ..................................... greater of

±

0.001 inches or 0.02% full stroke

Resolution ................................................................................. essentially infinite

Measuring Cable .................................. 0.019-in. dia. nylon-coated stainless steel

Cable Fitting ............................................................................... crimp and swivel

Enclosure Material ................................... powder coated and anodized aluminum

Sensor ...................................................... plastic-hybrid precision potentiometer

Weight ................................................................................................ 2 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 M

@ 100 VDC, min.

Zero and Span Adjustment ............................................................... 2:1 turndown

Electrical Connector .................................................................. MS3102E-14S-6P

Mating Plug (included) .............................................................. MS3106E-14S-6S

ENVIRONMENTAL

Enclosure Design ..................................................................................... NEMA 1

Operating Temperature .................................................................. -40 o F to 180 o F

Thermal Effects

Zero ........................................................................... 0.01% full stroke / o F, max.

Span .......................................................................................... 0.01% / o F, max.

Vibration .................................................................. up to 10 G's to 2000 Hz max.

MECHANICAL

Measurement Range

(Inches)

0- 2, -10, -20

0- 5, -25, -50

0-15, -30

0-40

0-60

0-75

0-100

Cable Tension

(Ounces,

±

30%)

12

5

8

6

13

10

13

Max. Cable Acceleration

(Gravities)

4

3

2

11

2

3

4

The PT420 installs in minutes by mounting its base to a fixed surface and attaching its cable to the movable object. The PT420 works without perfect parallel alignment, and when its stainless steel cable is retracted, its height is less than 5".

20 mA

4 mA

Electrical Output: full retraction full extension normal output reversed output www.celesco.com

Celesco Transducer Products, Inc.

20630 Plummer Street • Chatsworth, CA • 91311 tel: (800) 423-5483 • (818) 701-2750 fax: (818) 701-2799 e-mail: [email protected]

60

PT420 Short to Medium Range • 4...20 mA Output Signal

outline drawing (2 thru 50 inch f.s. ranges)

2 "

R A N G E

, 1

" A "

0 " , 2

D

0

I M

"

E N

I N

S I O N

C H

1 .

3 4

E S ( M M )

( 3 4 .

0 )

5 " ,

1

2 5 " ,

5 " ,

5 0 "

3 0 "

1

1

.

.

8

5

3

6

(

(

4

3

6

9

.

.

8

6

)

)

4 0 " 1 .

6 3 ( 4 1 .

4 )

A L L D I M E N S I O N S A R E I N

I N C H E S ( M M ) t o l e r a n c e s u n l e s a r e + 0 .

0 2 i n .

s o t h e r w i s e

( + 0 .

5 m m ) n o t e d

2.00 (50.8)

0.20 (5.1) dia. thru

[4 places]

"A"

Electrical:

12...40 VDC IN

4...20 mA OUT

Sensing Circuit

2.50 (63.5)

4.00 (101.6)

7.00 (177.8) top rear

2.25 (57.12)

MS3106E-14S-6S

A

B

C

D

F

E contact view

Mating Plug

5/16" (8 mm) max cable dia.

16 AWG max wire size

~ 3.2 in. (81 mm)

2.29 (58.22)

1.23 (31.2)

2.62 (66.5)

Ordering Information / Model Number:

0.19 (4.8)

PT420

order code:

Full Stroke Range

0002 = 2 inches

0005 = 5 inches

0010 = 10 inches

0015 = 15 inches

0020 = 20 inches

0025 = 25 inches

-

7.50 (190.5)

Instrumentation Cable

MULTICONDUCTOR, 24 GA., SHIELDED

~0.2 in. (5 mm) dia.

A

1

B

0030 = 30 inches

0040 = 40 inches

0050 = 50 inches

0060 = 60 inches

0075 = 75 inches

0100 = 100 inches

C

- 1

D E F

0

G sample: PT420-0025-111-1110

A Measuring Cable Tension

1 = standard (see MECHANICAL specifications)

NOTE: options 2, 3, and 7 below are available for RE-ORDER only!

2 = increased (approx. 4 x standard cable tension, 0.024 inch dia. measuring cable)*

3 = high (approx. 8 x standard cable tension, 0.024 inch dia. measuring cable)*

7 = decreased (same as standard cable tension)

C Measuring Cable Exit

NOTE: options 2, 3, and 4 below are available for RE-ORDER only!

1 = top exit 2 = front exit 3 = rear exit 4 = bottom exit

6 p i n c o n n .

i n s t r .

c a b l e

D

E

F

A

B

C

R E D

B L K

W H T

G R N

Electrical Connections

2 w i r e

1 2 .

.

.

4 0 V D C

4 .

.

.

2 0 m A o u t c a s e g r o u n d

1 2 .

.

.

4 0 V D C

4 .

.

.

2 0 m A o u t n / a c a s e g r o u n d

3 w i r e

1 2 .

.

.

4 0 V D C c o m m o n

0 .

.

.

2 0 m A o u t

1 2 .

.

.

4 0 V D C

0 .

.

.

2 0 m A o u t c o m m o n n / a

E Output

1 = 4-20 mA, 2-wire, output increasing with cable extension

2 = 20-4 mA, 2-wire,output decreasing with cable extension

3 = 0-20 mA, 3-wire, output increasing with cable extension

4 = 20-0 mA, 3-wire, output decreasing with cable extension

F Electrical Connection

1 = 6-pin plastic connector and mating plug

2 = terminal strip

3 = 6-pin metal connector and mating plug

4 = 25 ft. instrumentation cable

* note: mechanical dimensions may vary from outline drawing above

61 tel: (800) 423-5483 • (818) 701-2750 fax: (818) 701-2799

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