Metrix ST5484E Installation Manual

Doc# M9162• REV AB (April 2019) Page 2 of 12
drill equipped with a magnec base but care must be taken so that the tapped and threaded
hole is perpendicular to the machined surface. The transmier must make contact all the way
around its base surface. Contact Metrix for more detailed counter bore instrucons.
If installing a transmier with a standard 1/4 inch NPT stud, drill a hole using a 7/16 inch bit, 5/8-
7/8 inch deep. Then tap using a 1/4 - 18 NPT (tapered pipe tap). Hand-ghten the transmier
and then turn an addional 1 to 2 turns using a wrench on the wrench ats. Do not use a pipe
wrench. A pipe wrench can apply extreme forces to the body and potenally damage electronic
components. A minimum of ve (5) threads of engagement should be made. A 1/4 inch to 1/2
inch NPT bushing is available for mounng the transmier in exisng 1/2 inch NPT holes. Also,
a Metrix model 7084 Flange Adapter can be used between the transmier and the machine
surface when there is not enough surface thickness to drill and tap a hole. The ange adaptor
mounts with three small screws.
If installing a transmier with one of the straight machined thread sizes, follow standard drill and
tap procedures. Do not drill a hole larger that the counter bore pilot diameter before using the
counter bore to prepare the machine surface. Drill out the hole with the correct tap drill size
aer preparing the surface.
The sensive axis of the transmier is in line with the mounng stud. The transmier can be
oriented in any (0 to 360 degree) posion.
3. WIRING
3.1 General
The ST5484E is connected like other loop powered transmiers. The following is a summary
based on area designaons.
Connect the eld wiring in accordance with the appropriate poron of Figure 1.
The ST5484E terminal block opon must be used with the following conductors specicaon:
• 14-24 AWG solid copper conductors OR
• 20-26 AWG stranded copper conductors
The ST5484E transmier requires a minimum of 11 VDC for proper operaon. This is the mini-
mum voltage required at the transmier (not the power supply), aer all other voltage drops
across eld wiring and receiver input impedance have been accounted for with the maximum
20mA of loop current owing. The minimum loop power supply voltage required is therefore 11
VDC plus 1 volt for each 50 W of total loop resistance.
Figure 1: Single-transmier loops Mulple-transmier loops
CAUTION: Use of a high-speed torque screw-
driver may damage the terminal blocks.

Metrix ST5484E Specifications

General

Brand	Metrix
Model	ST5484E
Category	Transmitter
Language	English