Table of Contents
Advertisement
Programmable secure access to prevent unauthorized access to and configuration of the flow
computer
Internal 100-ohm platinum RTD resistance curve fit with user-programmable single point
offset or 3/5-point user-calibration of the RTD input (XFC)
Quick, simple calibration procedures for the transducer in the XFC
Real-time clock providing a highly stable time base for the system
1.3.1
Enclosures
There are different enclosure sizes available depending on the customer needs for battery size, TFIO
modules, additional equipment and connections.
Figure 1-1: XFC
G5
inside the enclosure
1.3.2
Liquid Crystal Display (LCD) assembly
The LCD assembly consists of a display screen, a control board, and a ribbon cable to connect the
assembly to the XSeries
volume and operational records. During operation, the front panel LCD continuously scrolls through
the operating parameters, status information, and alarm or unusual conditions. The definition of
application parameters and annunciators is customizable. See section
status codes
for details.
Figure 1-3: Liquid Crystal Display and annunciators
1.3.3
Integral multivariable (XIMV) assembly
The External Integral Multi-Variable (XIMV) contains circuitry for processing all analog measurements
and provides the primary measurement capability for the XFC
provide EMI/RFI protection of the low-level signals and to protect the circuitry from other
environmental effects. The XIMV contains a single circuit board which contains the analog to digital
converter and analog conditioning circuitry necessary for the XIMVs, the RTD and two general purpose
analog inputs.
Because the XIMV is characterized over temperature at the factory, the unit is not field-repairable. All
repairs should be performed at an authorized Totalflow service center or returned to the factory. The
XIMV is characterized over temperature so that any changes occurring in the XIMV or in the
electronics can be compensated.
The XIMV always measures static pressure on the high side. The XIMV can be ordered from the
factory with the XIMV unit rotated on the meter enclosure; however, this is only offered as an aid to
the mechanical installation process. Static pressure is still measured on the high-pressure side.
2 0 | XSE RI ES G5 | 2 10 6 02 6MNAA
electronic board. The function of the LCD assembly is to provide complete
G5
G5
Figure 1-2: XRC
G5
inside the enclosure
12.1 LCD visual alarm and
G5
flow computer. The unit is designed to
Advertisement
Table of Contents
