Badger Meter Registers - Manual (Page 36)

Industrial Registers, Models ER-420-AC, ER-420-DC & ER-420-LP
Inputs
Flowmeter
Type P NPN/PNP, open collector, reed switch, active pulse signals 8…12 and 24V
Frequency Minimum 0 Hz, maximum 7 kHz for total and flow rate
Maximum frequency depends on signal type and internal low-pass filter
Example: Reed switch with low-pass filter: maximum frequency is 120 Hz
K-Factor 0 000010…9,999,999 with variable decimal position
Low-pass filter Available for all pulse signals
Outputs
Analog Output
Function Transmitting flow rate
Accuracy 10 bit Error < 0 05% Updates 10 times a sec
Software function is to calibrate the 4 00 mA and 20 00 mA levels precisely within setup
Load 1 kOhm max
Type ER-420-AC and
ER-420-DC
Passive galvanically isolated output
Type AP Passive 4…20 mA output; output loop powered
Transistor Output
Pulse output Maximum frequency is 500 Hz for units with Rev 03 and newer (60 Hz for units earlier than
Rev 03) Pulse length is user-definable between 7 8 msec up to 2 secs
Function One pulse output, transmitting accumulated total
Type ER-420-AC and
ER-420-DC
Isolated mechanical relay output; maximum switch power is 230V AC to 0 5A
ER-420-LP Passive transistor output, not isolated Load maximum is 50V DC to 300 mA
Operational
Operator Functions
Displayed functions • Total and/or Flow Rate
• Total and Accumulated Total
• Total can be reset to zero by pressing the CLEAR key twice
• Multiplication factor: x1, x10, x100, x1000, x10000
Total
Digits 7 digits
Units L, m 3 , GAL, USGAL, kg, lb, bbl, __ (no unit)
Decimals 0, 1, 2, or 3
Note Total can be reset to zero
Accumulated Total
Digits 11 digits
Units / decimals According to selection for Total
Flow Rate
Digits 7 digits
Units mL, L, m 3 , mg, g, kg, ton, GAL, bbl lb, cf, REV, __ (no unit), scf, Nm 3 , NL, P
Decimals 0, 1, 2, or 3
Time units sec, minute, hour, day
Page 36 May 2014