Configuration & Calibration
47
SECTION 5:
Configuration & Calibration of RCT Series with
Model 275 Communicator without a Device
Description
The Model 275 Communicator can be used to enter and
download configuration/ calibration values to the RCT
Series transmitter.
5.1 Range/Span Control
Definitions:
• LRV
- Lower Range Value of control loop.
• LSL
- Lower Sensor Limit corresponding to
minimum level point.
• PV
- Process Variable; level value from transmitter.
• SV
- Secondary Variable; could be volume or
weight-based on PV.
• URV
- Upper Range Value of control loop.
• USL
- Upper Sensor Limit corresponding to
maximum level point.
The first step in configuration is to identify the span
range position of the instrument. There is a jumper on
the back of the electronics chassis: Range Span
See Fig.
3-9
. The Range Span provides continuous adjustment
of the change in capacitance required to produce full
scale current. Each Range Span position advances the
range in inches or feet to approximately five times the
previous setting. Table A-1 gives the range span position
for a number of common sensing elements and range of
measurement.
Probe Length Vs. Span Position Number / Maximum Pf
Jumper Position:
1
2
3
4
5
6
Max Pf
20
100 450 2000 10000 40000
System
Maximum Probe Length In Feet
Conducting Liquids
RCTX3XXXXX18
N/A N/A 5.4
20
N/A
N/A
RCTX3XXXXX74
N/A N/A 9.2
40
200
920
RCTX3XXXXX45
N/A N/A 1.2
5.3
20
N/A
RCTX3XXXXX70
N/A N/A 1.4
6.25 31
140
RCTX3XXXXX40
N/A N/A 7.8
20
N/A
N/A
RCTX3XXXXX47
N/A N/A N/A N/A 4.1
14
RCTX3XXXXX22
N/A N/A 5.4
20
N/A
N/A
RCTX3XXXXX65
N/A N/A 5.4
20
N/A
N/A
RCTX3XXXXX72
N/A N/A N/A 4.2
21
95
Interface Application
RCTX2XXXXX45
N/A N/A 1.2
5.3
20
N/A
RCTX2XXXXX43
N/A N/A 1.0
4.8
20
N/A
RCTX2XXXXX47
N/A N/A N/A N/A 4.0
14
Insulating K=1.5-5
RCTX2XXXXX22
N/A 2.7
12.5 20
N/A
N/A
RCTX2XXXXX18
N/A 8.3
20
N/A N/A
N/A
RCTX2XXXXX74
N/A 8.0
37.5 16
N/A
N/A
RCTX2XXXXX45
N/A 3.6
16.2 20
N/A
N/A
RCTX2XXXXX70
N/A 3.8
17.1 76
N/A
N/A
RCTX2XXXXX40
N/A 6.0
20
N/A N/A
N/A
RCTX2XXXXX43
N/A 5.0
20
N/A N/A
N/A
RCTX2XXXXX47
N/A 5.0
14
N/A N/A
N/A
Table 5-1
Range/Span
Setting Chart
Содержание RCT 10 series
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