1
⁄32 DIN Temperature, Process
and Strain PID Controllers
CNi32 Series
U High Accuracy: ±0.03%
Reading, 0.5°C (±0.9°F)
1
U First
with Totally Programmable
Color Displays Standard
U User-Friendly,
Simple to Configure
U Free Software,
ActiveX Controls
U Full Autotune PID Control
U Universal Inputs:
Thermocouple RTD,
Process Voltage/
Current, Strain
U First
Offering Both RS232
and RS485 Serial
Communications in
1 Instrument (Optional)
U First 1⁄32 DIN Instrument
with Built-in Excitation,
24 Vdc Standard
U Temperature Stability
±0.04°C/°C RTD and
±0.05°C/°C TC
@ 25°C (77°F)
U NEMA 4 (IP65) Front Bezel
U First 1⁄32 DIN Instrument
with Analog Output
Selectable as a
Control Output or as
Retransmission of
Process Variable
U 2 Control or Alarm
Outputs Optional:
DC Pulse, Solid State
Relays, Mechanical
Relays, Analog Voltage
and Current
U Front Removable and
Plug Connectors
⁄32 DIN Instrument
1
⁄32 DIN Instrument
The OMEGA® CNi32 is the iSeries
controller in the extremely compact
and increasingly popular 1⁄32 DIN size
(22.5 x 45 mm cutout). The CNi32 is
the most sophisticated and accurate
instrument available in the small
1
⁄32 DIN package, yet is still easy
to configure.
The CNi32 handles more
thermocouple, RTD, process
voltage and current inputs than
any other 1⁄32 DIN controller.
The CNi32 is the first 1⁄32 DIN
controller with built‑in excitation
for transmitters or other devices,
24 Vdc @ 25 mA.
The CNiS32 has built‑in excitation
for bridge transducers, 5 Vdc @
40 mA or 10 Vdc @ 60 mA. When
communications options are
installed, external excitation may
be used and ratiometric operation
maintained by connecting the
external excitation to the sense
leads. Both 4‑ or 6‑wire bridge
configurations are supported for
internal or external excitation.
Non‑ratiometric operation is supported
for voltage and current transducers
The iSeries displays feature unique 9‑segment LED characters, which greatly
improves alphanumeric representations. The 7‑segment LED characters found
on most instruments are adequate for presenting numbers, but not letters.
Words are easier to read with the unique
9‑segment LED characters on the iSeries,
which makes operating and programming
simpler and easier.
9-segment LED
Panel punches
available, visit
omega.com/
panelpunches
CNi3233, smaller than actual size.
and is also valuable in measuring
offset and millivolt output of bridge
devices during manufacturing and
calibration. This model also features
10‑point linearization which allows
the user to linearize the signal
input from extremely nonlinear
transducers of all kinds.
The CNi32 introduces a number of
unique features not yet found on any
1
other
⁄32 DIN instrument. The CNi32
is the first 1⁄32 DIN controller with a
totally programmable display that
can change color between GREEN,
AMBER, and RED at any setpoint
or alarm point.The unique 9‑segment
LED characters greatly improves
alphanumeric representations.
The CNi32 is the first 1⁄32 DIN
controller offering 2 SPDT Form C
relays, instead of the single throw
relays on typical 1⁄32 DIN controllers.
The CNi32 is the first to offer
both RS232 and RS422/485 serial
communications in 1 instrument
(C24 option). Both ASCII protocol
and modbus protocol are selectable
from the menu.
7‑segment display
9‑segment display
P-19P-19
DPi32-B-COVER front
panel button cover
supplied with each
unit, standard.
CNi3233, shown smaller
than actual size.
22.50 +0.61/-0 (0.89)
PANEL CUTOUT
Dimensions: mm (inch)
45.00 +0.61/-0.00 (1.89)
PANEL THICKNESS
1
/32 DIN
Options
Suffix Ordering Description
-AL Limit alarm version
-SM Simplified menu (on/
Network Options
-C24 Isolated RS232 and
-EIS-2B
Power Supply
-DC 12 to 36 Vac/dc,
Factory Setup
-FS Factory setup and
-FS(RTD-1N) Factory scaled for
-FS(RTD-2N) Factory scaled for
Software (Requires Network Option)
OPC-SERVER OPC server/driver
LICENSE software license
1
Excitation not available with “-DC”, “-C24” or
“-C4EI” options.
2
“-AL” option not available on models with
analog (0 to 10V/0 to 20 mA) output.
3
“-SM” option not available on CNiS strain/
process input models.
(simplified menu,
alarms only, no PID
control)
off control or alarms,
no PID)
RS485/422, 300 to
19.2 Kb
2
3
1
Industrial iServer
Microserver™,
serves 32 devices
1
24 Vac
configuration
MIL‑T‑7990B nickel
RTD input, 0 to 200°C
(32 to 392°F)
MIL‑T‑7990B nickel
RTD input, ‑40 to
300°C (‑40 to 572°F)
CNi3244, shown smaller
than actual size.
48.0
48.0 (1.89)
(1.89)
FRONT VIEW
6.4 MAX
0.6 MIN
48.0
48.0
48.0 (1.89)
(1.89)
(1.89)
REAR VIEW
25.4 (1.00)
25.4 (1.00)
To Order Visit omega.com/cni32_series for Pricing and Details
Model No. Output 1 Output 2
Temperature/Pressure Input
CNi3222 0.5 A SSR 0.5 A SSR
CNi3223 0.5 A SSR Relay
CNi3224 0.5 A SSR DC pulse
CNi3233 Relay Relay
CNi3242 DC pulse 0.5 A SSR
CNi3243 DC pulse Relay
CNi3244 DC pulse DC pulse
CNi3252 Analog 0.5 A SSR
CNi3253 Analog Relay
CNi3254 Analog DC pulse
Strain/Process Input
CNiS3222 0.5 A SSR 0.5 A SSR
CNiS3223 0.5 A SSR Relay
CNiS3224 0.5 A SSR DC pulse
CNiS3233 Relay Relay
CNiS3234 Relay DC pulse
CNiS3242 DC pulse 0.5 A SSR
CNiS3243 DC pulse Relay
CNiS3244 DC pulse DC pulse
CNiS3252 Analog 0.5 A SSR
CNiS3253 Analog Relay
CNiS3254 Analog DC pulse
Accessory
Model No. Description
DPP-1
Comes complete with DPi32-B-COVER and operator’s manual.
Ordering Examples: CNi3222-C24,
control and serial communications, both RS232 and RS485.
CNiS322-AL,
1
⁄32 DIN panel punch
1
DIN PID controller with 2 solid-state relays for PID
⁄
32
1
DIN strain/process controller, limit alarm version with SSR output.
⁄
32
P-20
P-20
25.4 (1.00)
P
P