Install Instructions

MOUNTING: The DH3 may be either panel (ush) mounted or surface mounted.
Panel Mounting - Cut a 4-3/4˝ or 121 mm diameter hole in the panel and insert the unit from the front. Slip on the
mounting ring with the stepped side facing rear. Next, t the snap ring into the narrow groove at back edge of bezel.
Thread four (6) 32 x 1-1/4˝ mounting screws into tapped holes in mounting ring and set it against snap ring. Tighten
screws against rear of panel. See Figure B.
Surface Mounting - Drill (3) 3/16˝ (4.76 mm) diameter holes for mounting and cut a 9/16˝ x 1-1/2˝ (14.3 x 38.1 mm)
opening for access to terminal block as indicated in Figure B. If rear pressure connections are to be used, also provide
1/2˝ diameter holes as shown in Figure A and Figure C. Insert 6-32 machine screws from rear of mounting surface,
thread into tapped holes on back of transmitter and tighten.
Ø4-3/4 [120.65] HOLE
PNEUMATIC
PRESSURE T
APS
SNAP RING
GROOVE
Figure B
Figure C