Table of Contents
Advertisement
4.3.2.2 Coupon Potential Sampling (CH1) or Potential Sampling (CH1)
The uDL2 may be configured to read the coupon to reference cell potential. Both DC and AC values may be recorded
by checking the appropriate boxes.
The "Inv. Polarity" checkbox can be set if it is desirable for data to be recorded with opposite signs. This option only
affects the DC readings.
4.3.2.3 Coupon Current Sampling (CH2) or Potential Sampling (CH2)
The second channel on the uDL2 may be used for measuring coupon current, or it may be used to measure a second
potential point. The measurement type is selected by clicking on the appropriate radio button under the mode heading
(see Figure 20). In addition, the physical lead connections are shown in the area below the "Connections" heading.
***Note that the reference lead color differs between coupon current and dual potential modes.***
Figure 20 Channel 2 Mode Selection
4.3.2.3.1
CH2 Coupon Current Mode
Coupon current can be measured for both DC and AC values by checking the appropriate boxes. The uDL2 is capable
of measuring current in one of two(three for the uDL2-G2/G3) ranges. Select the range based on the expected maximum
coupon current and the range specifications from Appendix A. Note that only the uDL2-G2 and uGL2-G3 models
supports all three ranges—earlier versions of the hardware only support the medium and high ranges. The low range
radio button will be disabled for units that do not support that range.
The "Inv. Polarity" checkbox can be set if it is desirable for data to be recorded with opposite signs. This option only
affects the DC readings.
Coupon current may be recorded as raw amps, or it may be recorded as amps per square meter by selecting the A/m2
radio button. When recording in A/m2, the surface area of the test coupon must be entered in square meter units. A
coupon area converter calculator (see Figure 21) is provided for simple conversion from other units.
Figure 21 Coupon Area Converter
The uDL2 contains a hardware overcurrent protection circuit that disconnects the current path relay when an excessive
amount of current is flowing. With firmware versions prior to v1.09, the uDL2 would remain in the relay-open state
until the analog cable was removed and then plugged in. With v1.09 firmware, it is possible to configure automatic
reconnection of the current path at predetermined retry intervals. Up to four reconnect retries can be made. Click on
the 'Overcurrent' button to configure operation of this new feature. The following dialog is shown:
MOBILTEX® DATA LTD.
Calgary, Alberta
www.corTalk.com
TITLE: uDL2 Configuration and Operation Guide
DOCUMENT NO.:
SHEET:
UDL2-MAN-001
REV:
16 of 28
1.07
Advertisement
Table of Contents
