Badger Meter Model IOG - Manual (Page 5)

INTRODUCTION
The ER-500 flow monitor incorporates state-of-the-art, digital signal processing technology, designed to provide the user with
exceptional flexibility at a very affordable price Though designed for use with Badger Meter flow sensors, this monitor can be
used with almost any flow sensor producing a low amplitude AC output or contact closure signal
The ER-500 uses contact closures from an ILR transmitter that translates to flow rate thru use of a scaling constant called a K
factor
This monitor is also capable of accepting low-level frequency input signals typically found in flow sensors that generate
a frequency output The output signal for these type of sensors is a frequency proportional to the rate of flow The ER-500
monitor uses the frequency information to calculate flow rate and total flow Through the use of the programming buttons
the user can select rate units, total units and unit time intervals among other functions All ER-500 flow monitors come pre-
configured from the factory, if ordered with a flow sensor If required, however, it can easily be re-configured in the field
Finally, the user can choose between simultaneously showing rate and total, or alternating between rate and grand total
Freq. In
4-20mA
Iso Total Pluse
TR_B
TR_A
RS485 Gnd
Setpoint 1
Setpoint 2
Gnd
+
–
+
–
+
–
Total Reset
OC Total Pluse
Signal Gnd + –
KB/Display
J1
TB1
JP1
JP2
JP3
P2
Input
Total P
ulse
Sig
nal
P1
Mag
Pulse
Iso
OC
Low
High
2 1
Figure 1: ER-500 monitor
The monitor is available in two different levels of functionality The standard model provides all the functions necessary for
the most common flow metering applications The advanced version adds communications capabilities over an RS485 bus
using Modbus RTU and control outputs
User Manual
Page 5 August 2013