Manual

Analog Panel Meter Instruction Manual
7
INTRODUCTION
The APM is a multi-purpose, easy to use rate/totalizer ideal for flow rate, total, and
control applications. It accepts current and voltage signals (e.g. 4-20 mA, 0-10 V).
Three of the front panel buttons can be custom-programmed for specific
operation.
The basic model includes an isolated 24 VDC transmitter power supply that can
be used to power the input transmitter or other devices. An additional isolated
24 VDC power supply is included with the 4-20 mA output option. A digital input,
F4, is standard.
A fully loaded APM rate/totalizer meter has the following: four SPDT relays, 4-20 mA
output, and two 24 VDC power supplies. The APM capabilities may be enhanced by
adding the following external expansion modules: four SPST relays (creating an
eight-relay rate/totalizer), two digital I/O modules with four inputs and four outputs
each, and USB, RS-232 or RS-485 communication adapters.
The eight relays can be used for alarm indication or process control applications.
The 4-20 mA isolated output, Modbus RTU serial communications, and digital I/O
options make the APM an excellent addition to any system.
ORDERING INFORMATION
85-265 VAC
Model
12/24 VDC
Model
Options Installed
APM-100 APM-200 No options
APM-101 APM-201 4-20 mA output
APM-120 APM-220 2 relays
APM-121 APM-221 2 relays & 4-20 mA output
APM-140 APM-240 4 relays
APM-141 APM-241 4 relays & 4-20 mA output
Accessories
Model Description
PMA-01 RS-232 serial adapter
PMA-02 Meter copy cable
PMA-03 RS-422/485 serial adapter
PMA-04 RS-232 to RS-422/485 isolated converter
PMA-05 RS-232 to RS-422/485 non-isolated converter
PMA-06 USB to RS-232 non-isolated converter
PMA-07 USB to RS-422/485 isolated converter
PMA-08 USB to RS-422/485 non-isolated converter
PMA-10 DIN rail mounting kit for two expansion modules
PMA-11 4 SPST (Form A) relays
PMA-12 4 digital inputs & 4 digital outputs (2 may be connected)
PMA-13
Suppressor (snubber): 0.01 µF/470 , 250 VAC