Trimec rt11 - Introduction; Model Number Designation

2 Introduction 19
Rate dampening :
Rate dampening value verses time to reach new reading ( for an instantaneous change in
actual flow rate )
1.1
Model number designation
Model
Function
( all instruments have program PIN prot ection )
RT11
Rate totaliser, battery or DC powered with pulse outputs, 10 point NLC
RT12
RT11 rate totaliser with 4~20mA & alarm outputs, dual flow inputs
Electrical access
1
3 x M20 x 1.5mm f emale threaded conduit entry ports w ith knock-outs
2
3 x 1/2" NPT female threaded conduit entry port s w ith knock-outs
Flow input type
D
Digital ( pulse or frequency )
Analog
( 4~ 20mA )
Power supply
0
Self powered ( batt ery ) or regulated 8~24Vdc
Housing type
FM
Universal field mount ( can be panel mount ed )
MM
Integral meter mount
Options
i
Intrinsically safe to Exia IIB T6
( refer factory )
m o d e l No. e x a m p l e
RT12 1 D 0 FM i
Accessories
AWM
stainless steel wall mount kit
( see page 7 )
APM
stainless steel 2" pipe mount kit
( see page 7 )
ACF
MP series cooling fin kit for flowmeters with integral registers
ADM
DP & turbine stem adaptor - metric
( M16 to M20 )
ADN
DP & turbine stem adaptor - USA
( M16 to 1/2" NPT )
ASS
DP490 stem
( 100mm effective height, threaded M16 male )
ASL
DP525 stem
( 350mm effective height, threaded M16 male )
ATM
* universal stem for Turbine meters
( 3/4" BSPF to M16 )
AUS
* universal swivel stem for Turbine meters
( 1" NPTF to M16 )
0
5
10
15
20
25
30
35
40
45
50
5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
RT DAMPENING VALUE
RESPONSE TIME (seconds)
Responce curve
to 90% of actual
flow rate
Responce curve
to 99% of actual
flow rate