
Humidity and Temperature
Controllers
DPiTH Series
CNiTH Series
U Output 1: Humidity,
Output 2: Temperature
High Accuracy ±0.5°C
U
and ±3% RH
U 4 Popular DIN Sizes
U Ethernet and Serial
Communications
(Optional)
U User-Friendly, Simple
to Configure
U Full Autotune PID
Control
U Choice of Relays, SSR,
DC Pulse, Analog
Voltage and Current
U Programmable Ramp and
Soak for Humidity and/or
Temperature
U RH/Temperature Probe
Included
U RoHS 2 Compliant
The OMEGA® iTH Series instruments
monitor and control both temperature
and relative humidity. All meters
and controllers in the series are high
quality, highly accurate instruments
featuring OMEGA’s award-winning
iSeries technology, uncompromising
accuracy, backed by an extended
5-year warranty.
The instruments are simple to
configure and use, while providing
tremendous versatility and a wealth
of powerful features.
The OMEGA iTH Series instruments
are available either as monitors
or controllers. The monitors are
extremely accurate programmable
digital panel meters displaying
humidity, temperature, or dew
point. The controllers also provide
single output control for humidity
and temperature and are easily
programmed for any control or
alarming requirement from simple
on-off to full autotune PID control.
The iTH family of meters and
controllers are available in four
true DIN sizes: the ultra compact
1
⁄32 DIN; the popular midsize
1
⁄16 DIN square bezel with dual
display; the 1⁄8 DIN vertical, and
the 1⁄8 DIN horizontal with the big
bright 21 mm (0.87") digits.
CNiTH-i16D33-2
CNiTH-i8DH33-2
SENSOR INCLUDED!
The OMEGA iTH Series LED displays
can be programmed to change color
between GREEN, AMBER, and RED
at any setpoint or alarm point.
The iTH controller models offer a
choice of 2 control or alarm outputs
in almost any combination: solid
state relays (SSR); form “C” SPDT
(single pole double throw) relays;
pulsed 10 Vdc output for use
with an external SSR; or analog
output selectable for control or
retransmission of the process value.
The networking and communications
options (highly recommended)
include direct Ethernet LAN
connectivity with an embedded Web
server, and serial communications.
The C24 serial communications
option includes both RS232 and
RS485. Protocols include a straight
forward ASCII protocol. The C4EIT
option includes Ethernet and RS485
ASCII on one device.
The iTH Series meters and
controllers are designed for easy
integration with popular industrial
automation, data acquisition and
control programs as well as Microsoft
Visual Basic
provides free configuration software
which makes it fast and easy to
get up and running. Available for
download at OMEGA.
®
and Excel®. OMEGA
Specifications
Control
Action: Reverse (heat) or direct (cool)
Modes: Time and amplitude proportional
control modes; selectable manual or
auto PID, proportional, proportional with
integral, proportional with derivative with
anti-reset windup and ON/OFF
Hu-29
CNiTH-i8DV33-5
All models shown
smaller than actual size.
Rate: 0 to 399.9 seconds
Reset: 0 to 3999 seconds
Cycle Time: 1 to 199 seconds; set to
0 for ON/OFF operation
Gain: 0.5 to 100% of span; setpoints 1 or 2
Damping: 0000 to 0008
Soak: 00.00 to 99.59 (HH:MM), or OFF
Ramp to Setpoint:
00.00 to 99.59 (HH:MM), or OFF
Autotune: Operator initiated from front
panel for 1 input at a time only
CNiTH-i3233-5
Outputs
Two Physical Outputs: Output 1 = RH,
output 2 = temperature; functions are
set up as outputs (PID or ON/OFF), or
alarms
Ordering Outputs Choices:
Relay: 250 Vac @ 3 A or 30 Vdc @
3 A (resistive load); Form C SPDT
SSR: 20 to 265 Vac @ 0.05 to 0.5 A
(resistive load); continuous
DC Pulse: Non-isolated; 10 Vdc @
20 mA (used with external SSR)
Analog Output (Output 1 Only):
Non-isolated, control or retransmission
0 to 10 Vdc or 0 to 20 mA, 500Ω
maximum, ±1% of full scale accuracy
Control Output 1 and 2
Operation:
Action: Reverse (heat) or direct (cool)
Modes: Time and amplitude
proportional control modes; selectable
manual or auto PID, proportional,
proportional with integral, proportional
with derivative with anti-reset windup
and ON/OFF
Alarm 1 and 2 (Programmable):
1) Alarms are used for color
changing sequence of alarm status
(visual alarm)

POWER
OUTPUT2 OUTPUT1
BLACK
WHITE
GREEN
RED
SHIELD
N/C
2) Alarm functions are active,
in addition to the color changing
functions, if output 1 and 2 are
(menu) disabled
3) If alarms are disabled, output
menus (PID or ON/OFF) are active;
color change is still active
Operation: High/low, above/below, band,
latch/unlatch, normally open/normally
closed and process/deviation; front panel
configurations
-AL Limit Alarm Version: Output 1 and
2 submenus used for PID are eliminated
from menu; color sequence based on
alarm setpoints is still available
Input
Accuracy/Range @ 25C Non-condensing:
±3% for 10 to 90%;
±3.5% for 5 to 10% and 90 to 95%
±4% for 0 to 5% and 95 to 100%
Hysteresis: ±1% RH
Non-linearity: ±3%
Temperature Accuracy/Range*
±0.5°C for 5° to 45°C (±1°F for 41 to
113°F); up to ±1.5°C for -40° to 5°C and
45° to 124°C (up to ±2.7°F for -40° to
41°F and 113° to 255°F)
Resolution: 0.1%, 12bit for RH; 0.1°C,
14 bit for temperature
Response Time: 8 seconds, tau 63%
for RH; 5 to 30 seconds, tau 63% for
temperature
* Note: Extended temperature range is for
industrial probe only, the controller’s operating
temperature is 0 to 50°C.
Network and Serial
Communications
(For Options -C24, -C4EIT, -EIT)
Ethernet: Standards compliance
IEEE 802.3 10Base-T
Supported Protocols: TCP/IP, ARP,
HTTPGET
RS232/RS422/RS485: Selectable from
menu; both ASCII and MODBUS protocol
selectable from menu; programmable
300 to 19.2 K baud; complete
programmable setup capability; program
to transmit current display, alarm status,
min/max, actual measured input value
and status
RS485: Addressable from 0 to 199
Connection: Screw terminals
General
A/D Conversion: 12-bit RH and 14-bit temp
Reading Rate: 2 samples per sec max
Digital Filter: Programmable
Decimal Selection: None, 0.1 for
temperature and humidity
Display: 4-digit, 9-segment LED
i32, i16D, i8DV: 10.2 mm (0.40")
i8: 21 mm (0.83")
i8DH: 10.2 mm (0.40") and 21 mm (0.83")
RED, GREEN and AMBER
programmable colors for process
variable, setpoint and temp units
Operating Temperature: 0 to 50°C
(32 to 122°F), 90% RH non-condensing
Protection:
i32, i16D: NEMA 4X (IP65) front bezel
i8DH, i8DV: NEMA 1 (IP23) front beze
Power: Refer to ordering guide
l
CNiTH-i8DH shown with -2 Probe
16 (0.63) DIA
1 m (3')
CABLE
51 (2)
21.1 (0.83) SQ
48 H x 96 W x 127 D
CUTOUT:
45 H x 92 W
(1.77 x 3.62)
For other mechanical drawings please visit
OMEGA for more information.
CNiTH-i8DV shown with -5 Probe
16 (0.63) DIA
3 m
(10')
CABLE
137 (5.4)
0.83 (21.1) SQ
96 H x 48 W x 127 D
(3.78 x 1.89 x 5)
To Order
Model No. Description
DPiTH- (****) Monitor version, no control outputs
CNiTH- (****) ( * * ) Controller version, select 2 control outputs
i8DH Temperature and RH Input
i8DV Temperature and RH Input
i16D Temperature and RH Input
i32 Temperature and RH Input
Control Outputs
2 2 2 solid state relays (SSR’s): 0.5 A @ 120/240 Vac continuous
2 3 SSR and relay: Form “C” SPDT 3A @ 120Vac, 3A @ 240Vac
2 4 SSR and pulsed 10 Vdc @ 20 mA (for use with external SSR)
3 3 2 Relays: Form “C” SPDT 3 A @ 120 Vac, 3 A @ 240 Vac
4 2 Pulsed 10 Vdc @ 20 mA (for use with external SSR) and SSR
4 3 Pulsed 10 Vdc @ 20 mA (for use with external SSR) and relay
4 4 2 pulsed 10 Vdc @ 20 mA (for use with external SSR)
5 2 Analog output selectable as either control or retransmission of process
value; 0 to 10 Vdc or 0 to 20 mA @ 500 Ω max & SSR
5 3 Analog output 0 to 10 Vdc or 0 to 20 mA @ 500 Ω max & relay
5 4 Analog out 0 to 10 Vdc or 0 to 20 mA @ 500 Ω max & pulse 10 V
-AL limit alarm version (simplified menu; no PID control)*
RH/Temperature Probe (Must Select One)
-2 51 mm (2") probe for iTH with 1 m (3') cable
-5 127 mm (5") probe for iTH with 3 m (10') cable
Power Supply
* Standard power input: 90 to 240 Vac ±10%, 50 to 400 Hz, 110 to 300 Vdc,
equivalent voltage (*no entry required)
-DC Low voltage power option: 20 to 36 Vdc, 24 Vac ±10%; 12 to 36 Vdc,
Network Options
24 Vac ±10% for iTH-32
-EIT Ethernet with Embedded Web Server*
-C24 Isolated RS232 and RS485/422. 300 to 19.2k Baud
-C4EIT Ethernet with Embedded Web Server + Isolated RS485/422 hub for up
to 31 devices*
2
Accessories
Software
OPC-SERVER LICENSE OPC server/driver software license (requires network option)
iTHP-2
iTHP-5
*1 Analog output (Option 5) is not available with “-AL” units.
*2 -C4EIT or -EIT option is not available on the
devices that can connect to a CNiTH-i32xx-x-C24.
Units can be powered safely with 24 Vac power, but no certification for UL are claimed.
Ordering Examples: CNiTH-i8DH43-5-C4EIT, horizontal
a 127 mm (5") probe and Ethernet with embedded Web server.
DPiTH-i16D-2-EIT,
1
⁄16 DIN dual display with a 51 mm (2") probe and Ethernet with embedded Web server.
51 mm (2") replacement probe for iTH with 1 m (3') cable
127 mm (5") replacement probe for iTH with 3 m (10') cable
1
⁄8 DIN dual display horizontal
1
⁄8 DIN dual display vertical
1
⁄16 DIN dual display
1
⁄32 DIN single display*
2
1
⁄32 DIN. Refer to the iServer section for other Ethernet
1
⁄8 DIN dual display with pulse and relay outputs,
2
CUTOUT:
92 H x 45 W
(3.62 x 1.77)
1
H
u
Hu-30