UniMeasure HX-P420 Series Installation Manual

HX-P420 Series Installation Guide
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
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RANGE
Note: Di men sions in
2", 10"
brackets are mil li me ters.
3", 15", 30"
4", 20", 40"
5", 25", 50"
60"
80"
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E1 E2
Via Paolo Uccello 4 - 20148 Milano
Tel +39 02 48 009 757 Fax +39 02 48 002 070
Wiring and Circuit Diagram
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-
Ex ci ta tion Volt age .. 9 to 35 VDC
Total Loop resistance Per Graph
Dimensional Information
NOTE
Mount with Ø.25 or M6
Socket Head Cap Screws.
"A" "B" "C"
1.12 (28.4) 1.79 (45.5) 1.21 (30.7)
.96(24.4) 1.95 (49.5) 1.37 (34.8)
.80 (20.3) 2.11 (53.6) 1.53 (38.9)
.64 (16.3) 2.27 (57.7) 1.69 (42.9)
.49 (12.4) 2.42 (61.5) 1.84 (46.7)
.25 (6.4) 2.66 (67.6) 2.08 (52.8)
E3
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.
NOTE
Mount with Ø.50 or M12 Socket Head Cap Screws.
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