Onicon System-10 P1 Uživatelský manuál stáhnout pdf (Strana 36)

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System-10-P1 Manual 10/14 - 0656-9 / 18320 Page 36

1. Conrm ow meter

location and adequate

straight pipe run to

achieve desired results.

Conrm that the ow

meter location is

identied and selected

as per section 4.5 of

this manual.

Is the ow meter located in the correct location as required by the plans?

Compare actual straight pipe upstream and downstream of the ow meter

location to the recommended distances identied in the ow meter installation

manual.

Note: The ow meter manual is very conservative, assuming worst-case pipe

obstructions. Contact ONICON to discuss specics of your application. If

straight pipe run is very short, consult ONICON PRIOR to installing the ow

meter to discuss the possibility of upgrading to a different ow meter.

Review and record the meter location program setting.

2. Conrm pipe size &

material.

Conrm that the ow 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 certicate of calibration. When in doubt, measure the

circumference of the pipe.

Pipe O.D. = (circumference / 3.14) – (insulation thickness x 2)

3. Conrm insertion

depth and orientation

(for insertion meters

only).

Each insertion type ow 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 ow.

4. Conrm temperature

sensor thermowell

installations.

Conrm that the thermowells are properly installed and the bottom of the well

is in the ow stream. Make certain that only the components supplied with the

installation kit were used and that additional bushings were not added.

5. Conrm temperature

sensor installations.

Conrm 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. Conrm connection to

correct ONICON BTU

meter.

Conrm that the ow meter serial number matches the BTU meter serial

number (when ordered together). Also conrm that the serial numbers of the

temperature sensors match the BTU and ow meters.

7. Verify the type of uid

used in the piping

system.

Conrm that the uid specied on the BTU meter certicate of calibration

matches the uid owing in the piping system.

8. Conrm correct supply

voltage.

Verify that correct AC voltage is available at the power supply input terminals.

System-10 BTU Meters are congured to operate from 24, 120 or 230 VAC input

voltage (not eld 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 ow 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 ow in pipes. Flow signal readings should be taken while holding the ow 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 conrm that it is close to the design

supply temperature specied on the BTU meter certicate 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 conrm that it is close to the design return

temperature specied on the BTU meter certicate of calibration. Record the

temperature.

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