Badger Meter Registers - Manual (Page 17)

User Manual
5 – FLOWMETER
SIGNAL
51
The ER-420 is able to handle several types of input signal The type of flowmeter pickup / signal is selected
with SETUP 51
OTEE: N The selections "active pulse" offer a detection level of 50% of the supply voltage Read also par
4 4 2 2 and 4 4 3 2 Flowmeter input terminal 09-11
Type of Signal Explanation Resistance Freq. / MV Remark
NPN NPN input 100 K pull-up 6 kHz (open collector)
NPN - LP NPN input with low pass filter 100 K pull-up 2 2 kHz (open collector) less
sensitive
REED Reed switch input 1 M pull-up 1 2 kHz —
REED - LP Reed switch input with low pass
filter
1 M pull-up 120 Hz Less sensitive
PNP PNP input 100 K pull-down 6 kHz —
PNP - LP PNP input with low pass filter 100 K pull-down 700 kHz Less sensitive
ACT_8 1 Active pulse input 8 1V DC 3 K9 10 kHz External power required
ACT_12 Active pulse input 12V DC 4 K 10 KHz External power required
ACT_24 Active pulse input 24V DC 3 K 10 KHz External power required
Page 17 May 2014