Introduction
Your Gems DM21 Rate Meter with Total is one model in a family of 1/8 DIN units
which offers breakthrough display technology as well as easy-to-program single-line
parameters. Designed to provide instant visual feedback regarding an application’s
key input value, the DM21 not only has a 0.71” high LED display (27% larger than
other 1/8 DIN units), but also the ability to change display color based on process
status (programmable parameter in Operation Mode). Easy programming is made
possible via a help function and a secondary legend display.
This manual will guide you through the installation and wiring of your DM21 unit
with information on proper panel mounting and rear terminal layout and wiring
instructions. In addition, the instrument’s operation and programming modes are
thoroughly explained. The Operation Mode provides day to day operation and
allows editing of preset values. The Program Mode enables the configuration of
various parameters prior to initial operation. These parameters include those for
basic configuration as well as other settable features which will enhance the
functionality and usability of
the device.
This manual also provides
information on the DM21
Rate Meter with Total’s
alarms; transistor, relay and
linear outputs; product
specifications; and ordering
and warranty procedures.
Index
Installation
Panel Mounting
page 2
Wiring
page 3
Operation
Front Panel
page 4
Operation Mode
page 5
Programming
Program Mode
page 6-10
Appendix A
Specifications
page 11
General
Ordering Information
page 12
Warranty
page 12
Features
• AWESOME 0.71” high digit LED display
• Programmable color change display based on
an event
• Programmable help function and secondary
legend display
• Display configurable for update time, min.
number of pulses, and forced zero time
• Optional linear output relative to rate
• Choice of NPN, PNP, or magnetic primary
input
• Filter speed settable for 20, 200, or 10,000 Hz
• Standard outputs: two NPN transistors & one
relay (optional 2nd relay)
• Front panel reset enable and alarm lockout
• Optional RS-485 plug in card
• CE approved
Technical Manual
182022
DM21-5XXXX
Rate Meter
with Total
