Honeywell SMV 3000 user manual APInCal, for PV2

7.4 Using Transmitter to Simulate PV Input, Continued

Procedure, continued

Table 21

Step

5

6

7

Using SMV Transmitter in the Input Mode, Continued

Action

Select DPInCal tab card and type in desired PV1 input value that is to be simulated. Value should be within LRV and URV settings for PV1.

Write input to simulate input for PV1.

Repeat Steps 5 and 6 if you want to simultaneously simulate another PV input, by selecting the appropriate tab cards.

•APInCal, (for PV2)

•TempInCal, (for PV3) or

•FlowInCal, (for PV4)

8

9

10

NOTE:

Select PV Monitor from the View pull down menu to open the PV Monitor window and read PV4 FLOW output and verify PV input.

Record the output value and compare it with expected results. See NOTE below.

If output is not as expected, check range and PV4 configuration data, and change as required.

Clear input mode for all PVs in input mode.

Select Status tab card to verify that all transmitter inputs are in not in input mode and that there are no new messages.

For SMV models SMG170, (which uses gauge pressure as PV2 input), you must measure the absolute static pressure and then enter that value in the Atmospheric Offset field of the GPConf tab card.

Internally, the SMV transmitter uses absolute pressure values for all flow calculations. The value entered in the Atmospheric Offset field is added to the gauge pressure input value to approximate the absolute pressure. An inaccurate atmospheric pressure offset value will result in a small error of the flow calculation.

Use an absolute pressure gauge to measure the correct atmospheric pressure. A standard barometer may not give an accurate absolute pressure reading

1/99 SMV 3000 Transmitter User’s Manual 85