Product Overview

P-5215 Product Bulletin 7
9. Noting the desired
maximum differential
pressure, determine the
proper transmitter output
from the graph in Fig. 7. Be
sure to use the scale on the
graph that matches the
range of the transmitter. If
15 PSIG (105 kPa) has not
been achieved, proceed to
Step 10; if 15 PSIG has
been achieved, proceed to
Step 11.
10. If the output pressure is
under 15 PSIG (105 kPa),
turn the span adjustment
pin valve on the P-5215
counterclockwise 1/4 turn or
until 15 PSIG is achieved.
If the output pressure is
above 15 PSIG, turn the
span adjustment pin valve
clockwise as described
above. If desired, repeat
Steps 5 through 9 to fine
tune the instrument.
11. Note: In order to check
the midpoint of the
P-5215-4 only, it is
necessary to disconnect
the high and low sensing
lines.
Slowly close adjustable
restrictor #1 until the
midpoint of the transmitter
range is reached. Example:
On a transmitter with a
differential pressure range
of 0 to 2 in. WG (0 to
498 Pa), the midpoint would
be 1 in. WG (249 Pa).
Output test gage #2 should
read 9 PSIG (63 kPa). If
not, turn the zero
adjustment screw on the
P-5215 until the output
pressure, as read on test
gage #2, equals 9 PSIG.
12. Disconnect the test divider
circuit and reinstall the
P-5215 cover.
Repair Information
Field repairs must not be made.
For a replacement P-5215,
contact the nearest Johnson
Controls branch office.
Fig. 7: Differential Pressure vs Output Pressure