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PWE paddle-wheel flow meter
PWE paddle-wheel flow meter
Aalborg Instruments & Controls
Description
PWE paddle-wheel flowmeter for liquid flow measurement.
- Supports up to 23 Engineering Units (including one User Defined)
- Two programmable Totalizers (main and pilot) indicate total liquid volume
- Programmable High and low Flow Alarm limits with preset delay interval
- Programmable High and low Temperature Alarm limits with preset delay interval (optional)
- Two sets of user programmable optically isolated outputs
- User selectable (via jumpers) analog 0-5 Vdc or 4-20mA flow and temperature (optional) outputs
- Flow Pulse output (3.3Vdc CIMOS)
- Digital Interface (RS-232 or RS-485)
- Multi-Drop Capability of up to 256 units (RS-485 option)
- Extensive Self Diagnostic with LCD (optional) indication
- Local key pad and 2x16 characters LCD display with adjustable back light (optional)
- Enclosure weather tight to IP65 standards
- Free AALBORG configuration and calibration software (RS-232/RS-485)
FLOW MEDIUM Please note that PWE Flow Meters are designed to work only with liquids. Never try to measure flow rates of dry gas.
CALIBRATIONS Performed at standard conditions [14.7 psia (101.4 kPa) and 70�F (21.1�C)] unless otherwise requested or stated.
VISCOSITY Calibrated to 1 cSt (water). Meters with display can be used for fluids up to 50 cSt with field calibration (maximum flow range may be affected).
ENVIRONMENTAL (PER IEC 664) Installation Level II; Pollution Degree II.
FLOW ACCURACY (INCLUDING LINEARITY) 1% of FS
REPEATABILITY 0.25% of full scale.
FLUID TEMPERATURE MEASUREMENT RANGE* -10 to 70 �C
TEMPERATURE ACCURACY (INCLUDING LINEARITY)* �0.5 �C
FLOW RESPONSE TIME approximately 1 seconds (above 10% of full scale flow), approximately 2 seconds (below 10% of full scale flow)
MAXIMUM PRESSURE 10 bar (150 psi)
MAXIMUM PRESSURE DROP 1.4 bar (20 psi) at 132.5 L/min flow. See Table IV for pressure drops associated with various models and flow rates.
FLUID AND AMBIENT TEMPERATURE 14�F to 160�F (-10�C to 70�C)
OUTPUT SIGNALS�Power consumption:�Linear 0-5 Vdc (3000 ohms min load impedance)�Linear 4-20 mA (500 ohms maximum loop resistance)�Maximum noise 20mV peak to peak (for 0-5 Vdc output)�Flow Pulse Output: 3.3 Vdc amplitude (3000 ohms min load impedance)
OPTICALLY ISOLATED OUTPUTS UCE @ 40Vdc, ICE @ 150 mA
FLOMETER INPUT POWER 11 to 26 Vdc, 100 mV maximum peak to peak output noise�Power consumption:�+12Vdc (150 mA maximum)�+24Vdc (100 mA maximum)Circuit board have built-in polarity reversal protection, 300mA resettable fuse provide power input protection.
COMMUNICATIONS PARAMETERS (RS-232/RS-485) Baud rate: .................... 9600 baud Stop bit: ....................... 1 Data bits: ...................... 8� arity: .......................... None Flow Control: ............... None
DISPLAY* Optional local 2x16 characters LCD with adjustable backlight (2 lines of text).
KEY PAD* Optional 4 push button key pad.
CE COMPLIANCE EMC Compliance with 89/336/EEC as amended.Emission Standard: EN 55011:1991, Group 1, Class AImmunity Standard: EN 55082-1:1992(* - optional feature)
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