FlowRT Series Rate & Totalizer
The instrument displays instantaneous flow rate, resettable (batch) total and a cumulative total in engineering units as programmed by the user. The integral 3.6V replaceable lithium battery supports the rate & total displays and provides as much as 10 years of service.
An unscaled pulse output serves as an input signal amplifier ideally suited for coil type inputs from turbine or paddle wheel meters. The output can be transmitted over long distances & is NPN/PNP selectable (current sinking or current sourcing).
Alternatively a scaleable pulse output is available which is NPN/PNP selectable to facilitate input to any variety of PLC, counter or to drive a relay.
The RT also has low and high flow alarms, 4-20mA output, 10 point linearisation of flow input & the capability of adding, subtracting or ratioing of two separate flow inputs.
- General Specifications
|Display||Liquid crystal display ( LCD ) 9mm high alpha numeric characters + subscripts Instantaneous flow rate 5 digit to 3 decimal places, units/sec, /min, /hr or /day; Reset & accumulated totals 8 digit, programmable to 3 decimal places|
|Engineering units displayed||litres, gallons, m3, lbs, kgs or nil eng. units displayed|
|Input types||( pulse & frequency ) reed switch, open collector, coil ( 15mV P~P min.)|
|Input frequency range||0.1hz to 10Khz ( with programmable low frequency cut-off )|
|Input scaling range||0.001~9,999,999.999 with 3 floating decimal points|
|Linearisation||10 point correction, best under external power|
|Operating temperature||-10~+80°C (14~176°F), refer factory for higher / lower temp.|
|Power sources||one 3.6V lithium battery, 8~24Vdc external source and/or 4~20mA loop powered; Also with PM version 95~260Vac (DIN panel mount version)|
|Rate Outputs||4~20mA into 750Ω @24Vdc, resolution 0.25% of span, low & high flow alarms (NPN/PNP solid state & relay options)|
|Pulse outputs||NPN/PNP selectable, non-scaleable (10Khz max.) or scaleable (50hz max.), auto-ranging pulse width: 1000 ÷ (hz x 2) = msec, max 300msec,1A max.|
|Enclosures||( two styles ) IP66/67 (NEMA 4X) GRN field mount or DIN panel mount|
|Intrinsic safe option||Exia IIB T4|
|Mounting||flexibility meter & stem mount, wall, surface, pipe or panel mount|
|RT 12||# flow rate totaliser with pulse, analogue & flow alarm outputs|
|Input type||D digital (pulse or frequency)|
|Power supply (*PM version only)||0 self powered or 8~24Vdc1 *95~135Vac2 *190~260Vac|
|Housing type||FM universal mount (field, stem, surface, pipe, wall or panel mount); MM integral meter mount; PM DIN panel mount 91 x 91 mm (3.6 x 3.6in) cut out; FE DIN Mount field enclosure IP66 (NEMA 4x)|
|Options||Exia IIB T4 (available with FM & MM)|