Dwyer GFM2 User Manual
Page 11
Command
Name
Relay Action
Totalizer
K-Factors
Units
Description
Assigns action of the two SPDT
relays. The coil is energized
when the condition specified by
an Argument 2 becomes true.
Argument 2:
N - no action, relay disabled
T - totalizer reading > limit
H - high flow alarm
L - low flow alarm
R - Range between High &
Low alarms
M - Manual Relay overdrive
S - Read current status
Sets and controls action of the
flow totalizer.
NOTE: If Warm Up Delay option
is set to E (enabled) the Totalizer
will not totalize the flow during
first 6 minutes after power up.
Applies a gas correction factor to
the currently selected primary gas
calibration table.
(NOTE: does not work with %FS
engineering unit.)
See list of the internal K-factors in
the operating manual.
Set the units of measure for gas
flow and totalizer reading.
Note: The units of the totalizer
output are not per unit time.
No.
7
8
9
10
Command
R
T
K
U
Argument 1
1 (relay 1)
2 (relay 2)
Z (reset to zero)
F (start totalizer at
flow FS)
L (limit gas volume
in current EU)
D (disable totalizer)
E (enable totalizer)
R (read current
totalizer volume)
W (warm up delay)
S (setting status)
D (disable, sets
K=1)
I (internal K-factor)
U (user specified
factor)
S (status)
% (%FS)
mL/sec
mL/min
mL/hr
L/sec
L/min
L/hr
m
3
/sec
m
3
/min
m
3
/hr
f
3
/sec
f
3
/min
f
3
/hr
g/sec
g/min
g/hr
kg/sec
kg/min
kg/hr
Lb/sec
Lb/min
Lb/hr
USER (user
defined)
No Argument
<status> Returns
current EU
Argument 2
N
T
H
L
R
M
S
<value> (flow
%FS)
<value> (gas
volume)
E - enable
D - disable
No argument
(enable
previously set
internal K-factor)
Gas Index (0-35)
No argument
(enable
previously set
user K-factor)
<value> (decimal
correction factor)
(0-1000)
<value>
(conversion factor
from L/min)
Argument 3
S - seconds
M – minutes
H – hours (Time
base)
Argument 4
Y - use density
N – do not use
density
Response
R1N or R2N
R1T or R2T
R1H or R2H
R1L or R2L
R1R or R2R
R1M or R2M
RxN, RxT, RxH, RxL,
RxR, RxM
TZ
TF<value>
TL<value>
TD
TE
<value>(in current EU)
TW:E or TW:D
TS: Mode, Start, Limit,
Warm Up
KD
KI,<value>,<Gas>
KI,<Index>,<Gas>
KU,<value>
KU,<value>
SK, <Mode>, <Index>,
<Value> where:
Mode: D, I, U
Index: 0-35
Value: K-Factor value
U:%
U:mL/sec
U:mL/min
U:mL/hr
U:L/sec
U:L/min
U:L/hr
U:m
3
/sec
U:m
3
/min
U:m
3
/hr
U:f
3
/sec
U:f
3
/min
U:f
3
/hr
U:g/sec
U:g/min
U:g/hr
U:kg/sec
U:kg/min
U:kg/hr
U:Lb/sec
U:Lb/min
U:Lb/hr
U:USER,<Factor>,
<Time base>,
<Density mode>
U,<EU name>
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