The RT7 takes
the pulsed output from any flowmeter and displays the flow rate and total of
your process liquid.
Easy to use and to set up
Large easy to read displays
Preset to your requirements
Improves flowmeter performance
Monitor your process
Splash proof keypad
The RT7 gives you a display of the flow rate and total
flow of liquids in your application. You can use it for monitoring,
controlling, dispensing, blending or filling of any liquid.
The RT7 takes
a pulse input from your flowmeter and simultaneously displays the flowrate and
total. It also displays a non resettable accumulated total at the touch of a
button. High and low flow rate alarms can be used as part of a safety system to
protect your plant. There is a scaled pulse output and an analogue 4-20mA
output for transmission to other instruments or control equipment.
Installation and Setup
The setup is easy using the keypad and a 'beep' is
sounded with all keystrokes. The RT7 can be supplied preconfigured for your
Operator access to the setup menu can be inhibited. The
displays can be set for any units e.g. litres or gallons.
Alarms: Two flow rate alarms are available.
The low alarm relay will energise when your flow rate falls below a preset
value. The high alarm relay will energise when your flow rate rises above a
The relays can be used for audible or visual alarms or to
safely shutdown systems to protect equipment. The LEDs on the front panel
will indicate when there is a high or low alarm condition.
An optional 4-20mA or 0-10V output is available for
transmission to other instruments or control equipment. It is scaleable to your
requirements and provides an accurate and fast response to changes in flow
Linearisation: The accuracy of any flowmeter can be improved
by programming the calibration errors of the flowmeter into the RT7.
Damping: Decreases the response time to steady the display of the
flow rate. The level of damping can be adjusted depending on how erratic the
readings are due to liquid turbulence, pump pulsation or fast valve actuation.
The RT7 has a tough aluminium case in standard
1/4 DIN format for mounting in a panel. The front bezel
and keypad has a splashproof seal that is resistant to most chemicals.
||Panel mounting instrument
||IP65 - bezel / face IP21 - rear case
||H 96mm X W 96mm X D 135mm
||92mm X 92mm
||Mains: Factory set 110 or 230 V AC 45-65 Hz
||DC Supply: 12 - 24 V DC
||8 - 24 V DC 50 mA
||6 digit 14mm high LED and 6 digit 10mm high
||0 - 45 oC
||2 rows of through panel terminals
|1. Pick-off Coil:
||Sine wave min: 7mV all frequencies
||Sine wave max: 35V high frequency 15V low
||Switch level: Low level < 8mA, high level
||Input current max: 50mA
||Low frequency: dc to 400Hz
||High frequency: dc to 5kHz
||Switch threshold selectable 2.5V or 1.4V
|5. Proximity switch:
||Namur DIN 19234 Switch threshold: 2.2V
||Low level < 1mA, high level > 3mA
||Sensor power supply: 8.2V dc 50mA
To view the RT7 Rate Totaliser pdf data sheet click here:
||Open collector switching transistor
||Pulse duration: 50 msec
|Flow Alarm Relays:
||Control Relay: 2 SPDT relays
||250 V AC 30 V DC Max current 8 A
||Range: 0.0001 to 999999
||Up to 8 factors Up to +/- 9.99%
||Total can be preset to display 1, 0.1 or 0.01
|3mm LED indication:
||Relay 1: When the flow rate drops below the low flow alarm
level relay 1 will be energised and the red relay 1 LED come on.
||Relay 2: When the flow rate rises above the high flow alarm
level relay 1 will be energised and the red relay 2 LED will come on.
To see available data sheets and manuals click here:
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