i
Out of Pipe testing must be performed.
With this configuration, the meter must be removed from the process, the
test performed, and then the meter returned to the process after testing has
been completed.
Due to the high sensitivity of the PowerPro™ sensor, it is necessary to isolate
the sensor once the meter has been removed from the pipe. Therefore, Fox
provides a sensor cover when the meter is shipped to the customer. An
alternative to the sensor cover is to use a bottle or other closed container in
order to isolate the sensor and achieve the "no flow" condition necessary to
perform the Zero CAL-CHECK™ test.
Fig. 2.1: Fox-Supplied PVC Sensor Protector vs. Plastic Bottle
Setting Field Baseline for In-Situ Zero CAL-CHECK™ tests
After calibration of every FT3 meter, a lab technician sets the factory baseline
for Zero CAL-CHECK™ tests. If you are planning on removing the meter
from the process to perform the test, you do not have to set the baseline;
however, if you plan to perform the test in-situ (in the pipe) or using a Fox
Packing Gland Assembly, you must set the field baseline before performing
the test.
9
Start Up
Calibration Validation
ST
ART UP
399 Reservation Road, Marina, CA 93933 Ph: 831.384.4300 Fax: 831.384.4312
Setting Field
Baseline
NOTE: For best results:
1. Use the factory-supplied PVC sensor protector shipped with the meter
(see Fig. 2.1 above).
2. Place the meter upside-down on a flat, solid surface before starting the
test.
3. Do not allow the meter to get jostled - make sure the meter is stable
and the sensor completely isolated.