Obtaining The Test Point Values; Evaluating The Test Points - Emerson Micro Motion 2400S Configuration And Use Manual

Troubleshooting
11.19.1

Obtaining the test point values

To obtain the test point values:
• With the display, configure the required test points as display variables. See Section 8.9.5.
• With ProLink II
a. Click
b. Observe or record the values displayed for
and
Drive Gain
• With a DeviceNet tool, execute a Get for the attributes listed in Table 11-4.
Table 11-4 Test points with DeviceNet tool
Test point
Drive gain
Tube period
Left pickoff
Right pickoff
11.19.2

Evaluating the test points

Use the following guidelines to evaluate the test points:
• If the drive gain is erratic, negative, or saturated, refer to Section 11.19.3.
• If the value for the left or right pickoff does not equal the appropriate value from Table 11-5,
based on the sensor flow tube frequency, refer to Section 11.19.4.
• If the values for the left and right pickoffs equal the appropriate values from Table 11-5, based
on the sensor flow tube frequency, record your troubleshooting data and contact Micro Motion
customer service. See Section 11.3.
Table 11-5 Sensor pickoff values
(1)
Sensor
®
ELITE CMF sensors
F025, F050, F100 sensors
F200 sensors
H025, H050, H100 sensors
H200 sensors
R025, R050, or R100 sensors
R200 sensors
T-Series sensors
CMF400 I.S. sensors
(1) If your sensor is not listed, contact Micro Motion. See Section 11.3.
Configuration and Use Manual
ProLink > Diagnostic Information
.
Class
Diagnostics Object (0x66)
Pickoff value
3.4 mV peak-to-peak per Hz based on sensor flow tube frequency
3.4 mV peak-to-peak per Hz based on sensor flow tube frequency
2.0 mV peak-to-peak per Hz based on sensor flow tube frequency
3.4 mV peak-to-peak per Hz based on sensor flow tube frequency
2.0 mV peak-to-peak per Hz based on sensor flow tube frequency
3.4 mV peak-to-peak per Hz based on sensor flow tube frequency
2.0 mV peak-to-peak per Hz based on sensor flow tube frequency
0.5 mV peak-to-peak per Hz based on sensor flow tube frequency
2.7 mV peak-to-peak per Hz based on sensor flow tube frequency
.
Tube Frequency , Left Pickoff
Instance
1
, Right Pickoff ,
Attribute
20
21
23
24
123