Badger Meter 4020 User Manual

The COX Series 4000 Flow Computer is an integral
part of a complete system from Cox which provides
the most accurate flow metering capabilities in the
industry. Its state-of-the-art electronics automatically
compensate for nonlinearity caused by high fluid
viscosity, and nonlinearity inherent with LO FLO
meters, thus maintaining the calibrated accuracy of
the turbine meters over their entire flow ranges.

Key features for both Models 4010 and 4020:

• Linearization
Program up to 40 calibration points via front
panel keypad, RS-485 port, or COX QuickLoad
Software

• Compensates for inherent nonlinearity caused by:

- Higher viscosity fluids such as hydraulic oils,
diesel fuel, automotive oils

- Lo Flo Series characteristic nonlinearity

• Flow totalization, local and remote

• RS-485 communications port
Useful for changing calibration data in the field
and interfacing with a central PC

• Direct indication in standard engineering
units: GPM, PPM, LPM, etc.

Options for both Models 4010 and 4020:

• NEMA 4 housing for wall mount applications

• Explosion-proof housings

- Class I, Division I, Groups C and D

- Class I, Division I, Groups E, F, and G

• RS-232 serial communications port in separate
enclosure

• QuickLoad Software
(c/w RS485

➯ RS232 Converter)

In addition to all of the key features listed,
the Model 4020 Flow Computer also provides:

• Temperature compensation
Using an RTD temperature input and viscosity vs.
temperature data fluctuations in viscosity and
specific gravity caused by fluid temperature
variations can be automatically corrected

• Data acquisition system interface
Optically isolated 4-20 mA DC analog output,
linearly proportion to flow rate, for connection to
chart recorders or other instrumentation

15555 North 79th Place • Scottsdale, AZ 85260 • tel: [phone] • fax [phone] • www.cox-instruments.com

COX 4010 and 4020 Flow Computers

Precision
Bulletin 4010/20-FC

©2007- Cox Instruments 830-XX 901TC2

COX 4010 and 4020 Flow Computers

Unit Specifications

Overall Accuracy

±

0.05%

Operating Temperature: 32˚F - 131˚F
(0 - 55˚C)

Environmental

Storage Temperature: -40˚F - 158˚F
(-40˚ - 70˚C)

Power

Nominal Line Voltage: 100, 110, 220
or 240 VAC (50/60 Hz)

Power Consumption 5 Watts max

Temperature Inputs

Compatible RTD type: 100Ω Platinum

(4020) Only

Lead Wire Compensation: 4 Wire
Configuration 2, 3 or 4 Wire

Range: 0-24 VDC, sink only.

Flow Inputs

Thresholds: High = 2.8 - 24 VDC

Low = 0 - 1.3 VDC

Impedance: 5.8 kΩ
Six Digit Display

Flow Rate Display 3 Character units of measure identifier

(GPM, LPM, PPH, CCM, etc.)
Type: Dry Contact, Form C

Relay Outputs Contact Rating:

10A@115/230VAC/28VDC
Type: NPN

Transistor Outputs

150 mA Maximum
30 VDC

Auxiliary Power

(AC powered units only)

Outputs

Voltage: 24 VDC regulated and filtered
Current: 0 to 100mA

Analog Output

4-20 mA, 12-27 VDC

ACC: ± .1% F.S. update = 2Hz
Frequency Range 0-7.5 kHz
Communications RS-485 Multidrop

FLOW COMPUTER APPLICATION

• Turbine flowmeter sends digital signal to
Flow Computer

• 100W RTD direct hook-up to Flow Computer
(4020 Only)

• Flow Computer Linearizes, Temperature
Compensate (4020 Only) and calculates
corrected Flow Rate & Total

• Scaled pulse out to remote totalizer in
supervisory area

• 4-20 mA out, corrected flow rate, to strip chart
recorder tracks trends

• Alarm relay and transition outputs to activate
bell and/or light as needed

For more information, contact COX Instruments

or your local COX Instruments representative.

15555 North 79th Place • Scottsdale, AZ 85260

tel: [phone] • fax [phone]

www.cox-instruments.com