Metra Smart Flow Rate & Totaliser
The Metra-Smart flow rate & totaliser was specifically designed for computing and displaying rates and totals as well as giving an analogue output proportional to flow. It can also give two pre-set flow switch points and calculate differential rates from two input sensors. The Metra-Smart flow rate & totaliser will display Re-settable Total, Accumulated Total and Flow Rate in engineering units as programmed by the user. Simple PIN protected flow chart programming with English prompts guide you through the entire programming routine greatly reducing the need to refer to the instruction manual.
The pulse output of the Metra-Smart flow rate & totaliser can be selected to act as an input pulse repeater serving as a signal conditioner module or may be programmed as a scaled pulse output for remote metering. There is a ten point linearisation for non-linear sensors. The analogue output and flow switch function requires an external 8-24Vdc power supply. The robust housing is purpose designed to suit harsh indoor & outdoor industrial and marine environments. It is weatherproof to IP66/IP67 (Nema 4X) standards, UV resistant and uses glass reinforced nylon mouldings with stainless steel screws and Viton® O-Ring seals.g seals.
Metra Smart Flow Rate & Totaliser: Features
- 5 Digit rate indication
- 8 Digit total
- 8 digit accumulated total
- Analogue output
- 2 programmable flow alarms
- Dual input A+B, A-B, A/B
- Simple programming with English prompts
- 10 point linearisation
- Scaleable pulse output
- IP66/IP67 (NRMA 4X)
- Clear 9mm LCD display
- Remote/local reset
- Long battery life (up to 10 years)
- -20 to 80 °C (-4 to 176°F) Operation
- Non-volatile memory
- IS Option (-20 to 60°C) – Exia IIB T4/IECE
- Low battery indicator
The Metra-Smart Flow Totaliser & Rate Flow Meter is Ideal for:
- Flow rate & total
- Production lines
- Fuel consumption
- Process indicators
Titan Flowmeters Metra Count – computing flowmeter rates and totals – specification
Custom multifunction LCD
LCD 8 digit alpha-numeric 9mm high Engineering units & mode indicators Low battery indicator 3 programmable decimal points for totals English programming prompts
Universal pulse- frequency input
Compatible with reed switch, Hall effect detector, magnetic coil (20mV P-P), Voltage pulse & Namur proximity detectors. Maximum input frequency 500 to 5Khz depending on sensor type, minimum 2Hz, (0.2Hz) when used on external power).
Loop powered 4 to 20mA can be spanned anywhere within the flow range. 12~24 V dc into 750? loop load. Accuracy is ±0.1% FSD. A test output is activated during programming.
Flow set points
High & low flow switches
Two NPN/PNP selectable FET transistors programmable as high and low set points with dead bands. Maximum power is 100mA at 24V dc.
Battery and/or external 8-24Vdc (Up to 10 year battery life)
Internal 3.6V Ultra lithium battery.
Selectable NPN or PNP it has a maximum frequency of 100 Hz. @ 1A maximum
IP66 (NEMA 4X)
High impact glass reinforced nylon. Self drill cable gland in the base or rear. Operating temperature range –20°C to +80°C
K Factor range
0.001 to 9,999,999.999
With floating decimal points during entry.
Rate time base
Seconds, minutes, hours or day
Flashes when rate/total button pressed.
A+B, A-B or A/B
Metra Smart Rate & Totaliser – Materials of construction
- UV resistant glass reinforced nylon case, polycarbonate cover, viton seals and stainless steel screws
Metra Count Dimensions
The LCD 8 digit alpha-numeric display has 9mm high main characters with engineering units & mode indicators plus a low battery indicator. Displays rate, total and accumulative total all with independently programmable decimal point positions. The programming prompts scroll in plain English for ease of use. The inputs are compatible with reed switch, Hall Effect detector, magnetic coil (20mV P-P), Voltage pulse & Namur proximity detectors. Maxi-mum input frequency 500 to 5Khz depending on sensor type, mini-mum 0Hz, (0.1Hz when used on internal power and for rate indication). A loop power of 4 to 20mA can be spanned anywhere within the flow range, 12~24 V dc into 750 loop load. Accuracy is ±0.1% FSD. A test output is activated during programming for a system function check. The two set points are NPN/PNP pulse outputs with selectable FET transistors programmable as high and low set points with dead bands. Maximum power is 100mA at 24V dc. Internal 3.6V Ultra lithium battery is used for internal battery powered use. There is an additional scalable pulse output selectable NPN or PNP it has a maximum frequency of 100 Hz. @ 1A maximum. The housing is high impact glass reinforced nylon with a self drill cable gland in the base or rear. Operating temperature range –20°C to +80°C. When the unit is measuring flow rate the first 2 or 3 digits show the time base i.e. SEC, MIN, Hr or DAY.
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Metra Smart Flow Meter Rate & Totaliser: Hall-Effect Detection: Order Codes
Metra Smart: 380-101
Metra Smart IS option: 380-101-IS – Exia IIB T4
Wall bracket: 380-103