ONICON System-10 P1 - Manual (Page 36)

11451 Belcher Road South, Largo, FL 33773 • USA • Tel +1 (727) 447-6140 • Fax +1 (727) 442-5699 • [email protected]
System-10-P1 Manual 10/14 - 0656-9 / 18320 Page 36
1. Confirm flow meter
location and adequate
straight pipe run to
achieve desired results.
Confirm that the flow
meter location is
identified and selected
as per section 4.5 of
this manual.
Is the flow meter located in the correct location as required by the plans?
Compare actual straight pipe upstream and downstream of the flow meter
location to the recommended distances identified in the flow meter installation
manual.
Note: The flow meter manual is very conservative, assuming worst-case pipe
obstructions. Contact ONICON to discuss specifics of your application. If
straight pipe run is very short, consult ONICON PRIOR to installing the flow
meter to discuss the possibility of upgrading to a different flow meter.
Review and record the meter location program setting.
2. Confirm pipe size &
material.
Confirm that the flow meter is tagged for the pipe diameter and material it is
installed in and that this information corresponds to the information listed
on the BTU meter certificate of calibration. When in doubt, measure the
circumference of the pipe.
Pipe O.D. = (circumference / 3.14) – (insulation thickness x 2)
3. Confirm insertion
depth and orientation
(for insertion meters
only).
Each insertion type flow meter comes with an attached insertion gage and
instruction tag. Ensure that meter is inserted to correct depth and that the
electronics enclosure is parallel with the pipe, with the arrow in the direction
of flow.
4. Confirm temperature
sensor thermowell
installations.
Confirm that the thermowells are properly installed and the bottom of the well
is in the flow stream. Make certain that only the components supplied with the
installation kit were used and that additional bushings were not added.
5. Confirm temperature
sensor installations.
Confirm that the temperature sensors are properly installed, and each sensor is
bottomed out in the well. A small amount of thermal compound should be
applied to the tip of each sensor to improve the thermal transfer.
Each sensor has a black sleeve on the cable coming up from the metal sensor.
This sleeve in cut to length for the thermowell. When the sensor is fully
bottomed out in the well, the retaining nut can be tightened without any of the
black sleeve protruding through the nut.
6. Confirm connection to
correct ONICON BTU
meter.
Confirm that the flow meter serial number matches the BTU meter serial
number (when ordered together). Also confirm that the serial numbers of the
temperature sensors match the BTU and flow meters.
7. Verify the type of fluid
used in the piping
system.
Confirm that the fluid specified on the BTU meter certificate of calibration
matches the fluid flowing in the piping system.
8. Confirm correct supply
voltage.
Verify that correct AC voltage is available at the power supply input terminals.
System-10 BTU Meters are configured to operate from 24, 120 or 230 VAC input
voltage (not field selectable).
Input voltages should be within the following ranges:
24 VAC: 20 - 28 VAC
120 VAC: 108 - 132 VAC
230 VAC: 207 - 253 VAC
The System-10’s internal power supply will provide 24 VDC to power the
ONICON flow meter (except F-3100/F-3200) which can be measured at T-4, pins
1 (+) and 2 (-).
In order to proceed with the following steps, the BTU meter must be operating and connected to the network.
There must also be flow in pipes. Flow signal readings should be taken while holding the flow rate constant if
possible. Otherwise, take the various output readings as quickly as possible.
9.
Select the SUPPLY
TEMP page. Note and
record the temperature.
Scroll through the BTU meter display pages and select the SUPPLY TEMP page.
Note the displayed temperature and confirm that it is close to the design
supply temperature specified on the BTU meter certificate of calibration.
Record the temperature.
10. Select the RETURN
TEMP page. Note and
record the temperature.
Scroll through the BTU meter display pages and select the RETURN TEMP page.
Note the displayed temperature and confirm that it is close to the design return
temperature specified on the BTU meter certificate of calibration. Record the
temperature.