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OPERATION
7
Menu
No.
2.4.2
2.4.3
2.4.4
2.4.5
2.5.4
24
Function
Function description
RANGE I
This parameter sets the
range of the output current
with (3.8...20.5 mA) or without
(4...20 mA) over-run values. It
also tells the device what to
do if an error occurs. For
example, the device will
change to an error value of
3.6 mA if you set RANGE I to
"3.8-20.5/3.6E".
SCALE 4mA
This gives a measurement
value to 4 mA.
SCALE 20mA
This gives a measurement
value to 20 mA.
ERROR DELAY
The time after which the
current output changes to an
error value. The error value
shows that there is a
measurement error.
MN=minutes and S=seconds.
MEASUR.MODE
The device uses the dielectric
constant (ε
contents to monitor level. In
direct mode (if the dielectric
constant is high), the level
signal is a reflection on the
surface of the tank contents.
If the dielectric constant is
low, the device uses TBF
mode. The device in TBF
mode uses the radar
reflection on the bottom of
the tank (the signal goes
through the tank contents).
The tank must have a flat
bottom for the device to
operate correctly in TBF
mode. This menu item is set
by default to "Direct" for tank
contents with an ε
is very low (<1.6), use "TBF
Full". If ε
1.5...1.7), use "TBF Partial"
mode. "TBF Partial" is an
automatic mode that lets the
device make a selection
between "Direct mode and
"TBF" mode. If you use "TBF
Full" or "TBF Partial", enter
the dielectric constant in
menu item 2.5.3 Er
PRODUCT.
4-20, 4-20 / 22E,
4-20 / 3.6E,
3.8-20.5 / 22E,
3.8-20.5 / 3.6E
min-max:
min-max:
0 S, 10 S, 20 S, 30 S,
1 MN, 2 MN,
5 MN,15 MN
Direct, TBF Partial,
) of the tank
TBF Full
r
>1.8. If ε
r
r
is low (ε
=
r
r
www.honeywell.com/ps
SMARTLINE® RM77
Selection list
Default value and
comments
3.8-20.5 / 3.6E
Default value agrees
2
with the customer
order
Default value agrees
2
with the customer
order
0 S
3
Direct
Do not change.
Do not change.
Do not change.
Do not change.
34-VF-25-105 iss.1 GLO April 15 US
1
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