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Dimensional Information

HX-P420 Series Installation Guide

Wiring and Circuit Diagram

Alternate Wire Rope Exit

E1

E2

E3

NOTE
Mount with Ø.25 or M6 
Socket Head Cap Screws.

Alternate Wire Rope Exit

NOTE
Mount with Ø.50 or M12 Socket Head Cap Screws.

RANGE                   “A”                         “B”                         “C” 
2”, 10”                1.12 (28.4)             1.79 (45.5)             1.21 (30.7) 
3”, 15”, 30”         .96(24.4)                1.95 (49.5)             1.37 (34.8) 
4”, 20”, 40”         .80 (20.3)               2.11 (53.6)             1.53 (38.9) 
5”, 25”, 50”         .64 (16.3)               2.27 (57.7)             1.69 (42.9) 
60”                     .49 (12.4)               2.42 (61.5)             1.84 (46.7) 
80”                     .25 (6.4)                 2.66 (67.6)             2.08 (52.8)

Alternate Wire Rope Exit

Note:  Di men sions in 
brackets are mil li me ters.

Ex ci ta tion Volt age ..

9 to 35 VDC

Total Loop resistance Per Graph

shielded cable between the transducer and the electrical inter-
face.  The shield of the cable should be open at the transducer 
and ground ed at the electrical interface.
With small blade type screwdriver (.105" max. blade width X 
.023" max. blade thickness), ad just the 

Zero

 and 

Span

 con-

 trols on the trans duc er to set the 4 and 20 mA output limits. 

Note:

 The

 Zero

 and 

Span

 con trols are some what in ter ac tive 

and may re quire several it er a tions to ob tain the de sired zero 
and maxi-

Model HX-P420

The 4 to 20 mA output transducer is a 2-wire, loop pow ered 
de vice. The transducer,  pow er supply, and cur rent monitor 
must be con nect ed in series as illustrated above.
The minimum supply voltage is a function of total loop resis-
tance. It may be calculated us ing the formula:
 

V(Min.)= (0.02 x Load Res.) + 9 VDC

It may also be determined from the ac com pa ny ing graph, 
shown at right.
When mounting, insure that the baseplate of the transducer 
is grounded to earth ground.  For best noise immunity, use 
twisted pair 

mum settings. Ex tend the trans duc er's cable (on an gu lar posi-
tion transducers, ro tate shaft) to the desired zero po si tion (must 
be with in 0% to 30% of range).  Adjust the 

Zero 

con trol so that  

the  output cur rent is 4 mA. Then extend the ca ble (on angular 
position trans duc ers, ro tate shaft) to the de sired max i mum posi-
tion (must be within 80% to 100% of range).  Ad just the 

Span

 

con trol for max i mum out put cur rent of 20 mA. Re check the zero 
set ting and adjust if nec es sary. Re check the Span setting and 
readjust if nec es sary. 

Via Paolo Uccello 4  -  20148 Milano   

Tel +39 02 48 009 757   Fax +39 02 48 002 070      [email protected]   www.dspmindustria.it

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