
63
Calibration
Fig. 5.1: Total Calibration Validation
Figure 5.1 above illustrates the Calibration Validation feature and a
summary of the details for each of the two tests.
Spirax Sarco has developed Calibration Validation, using the CAL-V™
and Zero CAL-CHECK™ tests to help our customers avoid sending the
meter back for annual or biennial re-calibrations.
Using Calibration Validation allows our customers to validate the
accuracy and functionality of the meter in the field with a push of a
button.
Calibration
Validation
Calibration Validation
Spirax Sarco MTI10/MTL10 Gas Flowmeter
CAL-V
TM
Zero - CAL-CHECK
TM
Sensor and Electronics
Test
Sensor Test at Zero Flow
vs. Field Baseline
Sensor Test at Zero Flow
vs. Factory Baseline
• Complete test of sensor
elements and electronics.
•
In your pipe, under normal
process conditions.
• Operator initiated via front
panel, MTI10/MTL10, or
MODBUS.
• Hold outputs at last value or go
to zero; operator-selectable.
•
Test takes less than 5 minutes;
3 minutes typical.
• Test results in pass/fail
message.
• Data saved in meter for look-
up anytime.
• Calibration Validation
Certificate can be generated
if test is initiated using MTI10/
MTL10 View
TM
software.
•
Customer-set zero flow baseline
established under normal zero flow
conditions.
• Test compares sensor characteristics
at zero flow with customer-set zero
flow baseline.
•
Operator-initiated from front panel,
MTI10/MTL10 View™, or MODBUS.
• Fail condition indicates possible dirty
sensor.
• Use of Spirax Sarco Packing Gland
Assembly to retract probe is a
convenient way to establish a zero
flow condition.
• Test takes less than 5 minutes after
zero flow condition. established
•
Calibration Validation Certificate can
be generated if test is initiated using
MTI10/MTL10 View™software.
• Test compares sensor
characteristics at zero flow
at ambient temperature and
atmospheric pressure with
factory characteristics.
•
Used to confirm Zero CAL-
CHECK™ when insitu zero
flow condition cannot be
established.
• Operator-initiated from front
panel or MTI10/MTL10 View™.
• Test takes less than 5 minutes
after out of pipe set-up
complete.
•
Calibration Validation Certificate
can be generated if test is
initiated using MTI10/MTL10
View™ software.