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
current EU
Argument 2
N
T
H
L
R
M
S
%FS)
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)
correction factor)
(0-1000)
(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
TL
TD
TE
TW:E or TW:D
TS: Mode, Start, Limit,
Warm Up
KD
KI,
KI,
KU,
KU,
SK,
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,
U,
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