
Step 17. Enter Alarm 1 Enable/Disable Submenu
Press dto display flashing 
DSBL/ ENBL
.
Step 18. Enable Alarm 1 Submenu
If flashing 
ENBL
is displayed, press a, if 
DSBL
is displayed,
press buntil 
ENBL
is displayed, then press dto store and
go to the next menu item.
Step 19. Select the Deviation Control Type Submenu
Press d. If flashing 
_DEV
Deviation is displayed press a,
otherwise press buntil flashing 
_DEV
is shown. Now 
press dto store and go to next menu item. 
Step 20. Select the Latched Type Submenu
Press d. If flashing 
UNLT
Unlatched is displayed press a,
otherwise press buntil 
UNLT
is displayed. 
Press dto store and advance to next menu item.
Step 21. Select the Normally Open Type of Contact 
Closure Submenu
Press d. If flashing 
N.o.
Normally Open is displayed, 
press a, otherwise press buntil 
N.o.
is displayed. Press 
d
to store and advance to next menu item.
Step 22. Select the Above Type of Active Submenu
Press d. If flashing 
ABoV
Above is displayed, press a,
otherwise press b until 
ABoV
is displayed. Press d to store
and advance to next menu item.
Step 23. Enable Alarm 1 at Power On 
(
A.P.oN
)
Press d. If flashing 
ENBL
is displayed, press a, otherwise
press buntil 
ENBL
is displayed. Press dto store and
advance to next menu item.
Step 24. Enter Alarm 1 High Submenu
Press atwice to skip 
ALR.L
Alarm 1 Low value. 
ALR.L
is
for below & 
ALR.H
for above.
Step 25. Set the Alarm 1 High value 
(
ALR.H
)
Press d. Press bor cuntil value to set the display to
002.0
. Press dto save.
Step 26. Enter the Alarm 2 Menu
The display will show 
ALR2
the top menu for Alarm 2. 
Repeat steps from 17 to 25 to set for Alarm 2 the same 
conditions as for Alarm 1.
Step 29. Configuration of Display Color Selection
Press auntil the 
COLR
Display Color Selection Menu
appears on the Display. Configure 
COLR
as 
N.CLR/GRN
(green), 
1.CLR/ RED
(red), 
2.CLR/AMBR
(amber). Please
refer to the operator’s manual if needed.
For color change on Setpoints refer to Owners Manual 
Section 2. 
DPiTH-i8DH, DPiTH-i8DV
Humidity + Temperature Monitor
CNiTH-i8DH-AL, CNiTH-i8DV-AL
Humidity + Temperature Limit Alarm
OPERATION 
Step 1. Apply Power to the Instrument
When your device is first powered up it will display the 
ambient temperature (assume 75°F).
Step 2. Enter Setpoint 1 Menu
Press aone time from run mode to get to 
SP1
Setpoint 1. 
Step 3. Enter the Setpoint 1 Value Submenu
Press d. Display shows the previous selection of Setpoint 1.
Step 4. Change the Setpoint 1 Value 
Press bor cuntil desired value is displayed.
Step 5. Store the Setpoint 1 Value 
Set the Setpoint 1 to 10 degree higher than Process value 
(SP1 = 85) and press dto store, display flashes 
STRD
message and advances to 
SP2
Setpoint 2 Menu.
Step 6. Store the Setpoint 2 Value
Repeat steps 3 and 4. Set the Setpoint 2 to 5 degree higher 
than Process value (SP2 = 80) and press dto store, 
display flashes 
STRD
message and advances to 
CNFG
Configuration Menu.
Step 7. Enter the Reading Config Menu
Press dto enter 
RDG
Reading Config Menu.
Step 8. Enter the submenu items of Rdg Config Menu
Press dto display 
SNSR 
Sensor submenu: Sensor selection
for Autotune, Loop, or Ramp and Soak 
°F.°C
is for
temperature and 
DRRh
is for Humidity
Step 9. Enter the submenu items of Rdg Config Menu
Press dto display Temp Unit submenu: 
Step 10 Scroll thru selection for Temp Unit submenu
Press bto Scroll though the available selections of the 
Temperature Unit of your choice: °For °C.
Step 11. Store the Temperature Unit
Press d, display momentarily shows 
STRD 
the Unit has 
been stored and the instrument will go automatically to the 
next menu item.
Step 12. Enter the Filter Constant Submenu
Display shows 
FLTR
Filter Constant Submenu.
Step 13. Display the Filter Constant Value Submenu
Press dto display the flashing, previously selected Filter 
Constant.
Step 14. Scroll through available Filter Constants
Press bto sequence thru Filter Constants 
0001, 0002
,
0004, 0008, 0016, 0032, 0064
and 
0128
.
Step 15. Store the Filter Constant
Press dmomentarily to store 
0004
Filter Constant and the
instrument will automatically go to the next menu item.
Step 16. Enter Alarm 1 Menu
The display will show 
ALR1
the top menu for Alarm 1. In the 
following steps we are going to enable Alarm 1, Deviation, 
Unlatch, Normally Open, Active Above, Enable at power-on 
and +2°F High Alarm i.e. Process Value > Setpoint 1 Value 
+2°F will activate Alarm 1.
• If Analog Output Option is installed and enabled, 
the controller will skip Alarm 1 Menu item to Analog 
Output.
• Alarm must be DISABLED if Ramp is ENABLED.
• Alarm1 will only work for Humidity, not 
Temperature.
MQS4003/1105
SPECIFICATION
SENSOR SPECIFICATIONS 
Relative Humidity Accuracy/Range:
±2% for 10 to 90% RH 
±3% for 0 to 10%RH and 90 to 100%RH
Non-linearity: ±3% 
Hysteresis: ±1% RH 
Response Time:
4 sec (63% slowly moving air)
Repeatability: ±0.1% 
Resolution: 0.03%, 12bit
Temperature Accuracy/Range*:
±1°C (±2°F) for -40 to 0°C and 80 to
123.8°C (-40 to 32°F and 176 to 254°F) 
±0.5°C (±1°F) for 0 to 80°C (32 to 176°F)
*NOTE: extended temp range is for Probe only, the 
Controller’s operating temp is 0-50°C
Repeatability: ±0.1°C 
Resolution: 0.01°C, 14 bit
METER SPECIFICATIONS 
Display:
4-digit, 9-segment LED, 
• 10.2 mm (0.40"): DPiTH-i8DV Dual Vertical
• 10.2 mm (0.40") and 21 mm (0.83"): 
DPiTH-i8DH Dual Horizontal 
Red, green, and amber programmable 
colors for setpoint and temperature units.
Output 1
†
:
Relay 250 Vac @ 3 A Resistive Load, 
SSR, Pulse
Output 2†:
Relay 250 Vac @ 3 A Resistive Load, 
SSR, Pulse
†
Only with -AL Limit Alarm option
Options: Communication
RS-232 / RS-485 or 10BaseT 
or
Excitation:
24 Vdc
@ 25 mA
Exc. n
ot available for Low Power Option
Line Voltage/Power:
90 - 240 Vac ±10%,
50 - 400 Hz*, 
or 110 - 375 Vdc, 5 W
* No CE compliance above 60 Hz
Low Voltage Power Option:
12 - 36 Vdc, 3 W**
** Units can be powered safely with 24 Vac
but No Certification for CE/UL are claimed.
Dimensions:
Dual Horizontal: 48H x 96W x 127D mm 
(1.89 x 3.78 x 5") 
Dual Vertical: 48W x 96H x 127D mm 
(1.89 x 3.78 x 5")
Weight:
295 g (0.65 lb)
Approvals:
CE per EN61010-1:2001
Alarm 1 is designed to monitor the humidity value 
around Setpoint 1 and Alarm 2 is designed to monitor 
the temperature value around Setpoint 2.
WARRANTY/DISCLAIMER
OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 
one (1) year from the date of purchase. In addition to OMEGA’s standard warranty period, OMEGA Engineering will 
extend the warranty period for four (4) additional years if the warranty card enclosed with each instrument is 
returned to OMEGA.
If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer Service Department will 
issue an Authorized Return (AR) number immediately upon phone or written request. Upon examination by OMEGA, 
if the unit is found to be defective, it will be repaired or replaced at no charge. OMEGA’s WARRANTY does not apply 
to defects resulting from any action of the purchaser, including but not limited to mishandling, improper interfacing, 
operation outside of design limits, improper repair, or unauthorized modification. This WARRANTY is VOID if the unit 
shows evidence of having been tampered with or shows evidence of having been damaged as a result of excessive 
corrosion; or current, heat, moisture or vibration; improper specification; misapplication; misuse or other operating 
conditions outside of OMEGA’s control. Components which wear are not warranted, including but not limited to 
contact points, fuses, and triacs.
OMEGA is pleased to offer suggestions on the use of its various products. However, OMEGA neither 
assumes responsibility for any omissions or errors nor assumes liability for any damages that result from 
the use of its products in accordance with information provided by OMEGA, either verbal or written. OMEGA 
warrants only that the parts manufactured by it will be as specified and free of defects. OMEGA MAKES NO 
OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESS OR IMPLIED, 
EXCEPT THAT OF TITLE, AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF 
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION 
OF LIABILITY: The remedies of purchaser set forth herein are exclusive, and the total liability of OMEGA with 
respect to this order, whether based on contract, warranty, negligence, indemnification, strict liability or 
otherwise, shall not exceed the purchase price of the component upon which liability is based. In no event 
shall OMEGA be liable for consequential, incidental or special damages.
CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic 
Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical applications 
or used on humans. Should any Product(s) be used in or with any nuclear installation or activity, medical application, 
used on humans, or misused in any way, OMEGA assumes no responsibility as set forth in our basic 
WARRANTY/DISCLAIMER language, and, additionally, purchaser will indemnify OMEGAand hold OMEGA harmless 
from any liability or damage whatsoever arising out of the use of the Product(s) in such a manner.
RETURN REQUESTS/INQUIRIES
Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE 
RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN (AR) 
NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPARTMENT (IN ORDER TO AVOID PROCESSING 
DELAYS). The assigned AR number should then be marked on the outside of the return package and on any 
correspondence.
The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent breakage in 
transit. 
FOR W
ARRANTY RETURNS, please have the 
following information available BEFORE 
contacting OMEGA:
1. Purchase Order number under which the product
was PURCHASED,
2. Model and serial number of the product under
warranty, and
3. Repair instructions and/or specific problems
relative to the product.
FOR NON-W
ARRANTY REPAIRS, consult OMEGA for 
current repair charges. Have the following information 
available BEFORE contacting OMEGA:
1. Purchase Order number to cover the COST of the
repair,
2. Model and serial number of product, and
3. Repair instructions and/or specific problems
relative to the product.
OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible. This affords 
our customers the latest in technology and engineering.
OMEGA is a registered trademark of OMEGA ENGINEERING, INC.
© Copyright 2005 OMEGAENGINEERING, INC. All rights reserved. This document may not be copied, photocopied, 
reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without 
the prior written consent of OMEGA ENGINEERING, INC.
PATENT AND TRADEMARK NOTICE: This product is covered by one or more of the following patents: U.S. Pat. 
No. Des. 336,895; 5,274,577; 6,243,021 / CANADA 2052599; 2052600 / ITALY 1249456; 1250938 / GERMANY DE 
41 34398 C2 / SPAIN 2039150; 2048066 / UK Patent No. GB2 249 837; GB2 248 954 / FRANCE BREVET NO. 91
12756. The “Meter Bezel Design” is a trademark of Newport Electronics, Inc. USED UNDER LICENSE. Other U.S. 
and International Patents pending or applied for.
This device is marked with the international caution symbol.   It is important to read the 
Setup Guide before installing or commissioning this device, as the guide contains important 
information relating to safety and EMC.
WARNING: These products are not designed for use in, and should not be used for, patientconnected applications.
It is the policy of OMEGA to comply with all worldwide safety and EMC/EMI regulations that apply. 
OEMGA is constantly pursuing certification of its products to the European New Approach Directives. 
OMEGA will add the CE mark to every appropriate device upon certification.
The information contained in this document is believed to be correct, but OMEGA Engineering, Inc. 
accepts no liability for any errors it contains, and reserves the right to alter specifications without notice.
TRADEMARK NOTICE:
®
, omega.com
®
,
, 
and ®are Trademarks of
OMEGA ENGINEERING, INC.
MADE IN
USA
®
®
OMEGAnet® On-Line Service
www.omega.com
Servicing North America:
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ISO 9001 Certified       Stamford CT 06907-0047
         TEL: (203) 359-1660    FAX: (203) 359-7700 
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         TEL: (514) 856-6928    FAX: (514) 856-6886 
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For immediate technical or application assistance:
USA and Canada:      Sales Service: 1-800-826-6342 / 1-800-TC-OMEGA 
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Internet e-mail
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®
®
®

1 Output 1/Setpoint 1/ Alarm 1 indicator
2 Output 2/Setpoint 2/ Alarm 2 indicator 
°C °C unit indicator for Temperature or Dewpoint 
°F °F unit indicator for Temperature or Dewpoint
%RH Display shows the Percent Relative Humidity
D Display shows the Dewpoint
a
Changes display to Configuration Mode and advances 
through menu items*
b
Used in Program Mode:
c
Used in Program Mode:
d
Accesses submenus in Configuration Mode
and stores 
selected values*
CONFIGURATION
FLOW CHART
DESCRIPTION OF FRONT PANEL
The upper display may be RH, Temperature or Dewpoint 
readings depending on your Reading Configuration selections. 
Factory defaults are shown. 
The Dual Display allows the user 
to observe the Relative Humidity or Dewpoint (upper display) 
and Temperature Value (lower display), at the same time.
Disassembly Instruction:
If necessary, the unit may be removed from the panel and 
opened.
Warning: Disconnect all ac power from the unit 
before proceeding.
1. Remove all wiring connections from the rear of the
instrument, by unplugging the power and input connectors.
2. The meter is front removable from the case 
3. Pull the board assembly out of the case.
WIRING
Wire the instrument according to the figure shown below.
Warning: Do not connect ac power to your 
device until you have completed all input and 
output connections. This device must only be 
installed by a specially trained electrician with 
corresponding qualifications. Failure to follow 
all instructions and warnings may result in injury!
Refer to Operator’s Manual for important Input Probe 
Shield wiring notes
Connect the main power connections as shown in the figure below.
FUSE Connector Output Type For 115Vac For 230Vac DC
FUSE 1 Output 1 Relay 3 A(T) 3 A(T) FUSE 2 Output 2  Relay  3 A(T)  3 A(T)  FUSE 3 Power  N/A 100 mA(T) 100 mA(T) 100 mA(T) 
FUSE 4 Power N/A N/A N/A 400 mA(T)
This Quick Start Reference provides information 
on setting up your instrument for basic operation. 
The latest complete Communication and Operational 
Manual as well as free Software and ActiveX Controls 
are available at 
www.omega.com/specs/iseries
or
on the CD-ROM enclosed with your shipment.
SAFETY CONSIDERATION
This device is marked with the international 
Caution symbol.
The instrument is a panel mount device protected in 
accordance with EN61010-1:2001. Remember that the unit 
has no power-on switch. Building installation should include 
a switch or circuit-breaker that must be compliant to IEC 
947-1 and 947-3.
SAFETY:
• Do not exceed voltage rating on the label located on 
the top of the instrument housing.
• Always disconnect power before changing signal and 
power connections.
• Do not use this instrument on a work bench without 
its case for safety reasons.
• Do not operate this instrument in flammable or 
explosive atmospheres.
• Do not expose this instrument to rain or moisture.
EMC:
• Whenever EMC is an issue, always use shielded cables. 
• Never run signal and power wires in the same conduit.
• Use signal wire connections with twisted-pair cables.
• Install Ferrite Bead(s) on signal wire close to the 
instrument if EMC problems persist. 
MOUNTING 
Panel Mounting Instruction:
1. Using the dimensions from the panel cutout shown in 
exploded views, cut an opening in the panel. 
45mm +.61/-.00 x 92mm +.81/-.00 with R 1.5, 4 places 
(1.772”+.024/-.000 x 3.622”+.032/-.000 with R 0.06”, 4 places) 
Panel thickness: 6.4mm (0.25”) max / 0.8mm (0.03”) min.
2. Remove sleeve from the rear of the case by removing
thumbnuts.
3. Insert the unit into the opening from the front of the panel, so
the gasket seals between the bezel and the front of the panel.
4. Slip the sleeve over the rear of the case.
5. Tighten the thumbnuts to hold the unit firmly in the panel.
_____ Underline denotes factory default setup
START HERE
Rear View
DPiTH-i8DH shown 
with -2 Probe
DPiTH-i8DV shown 
with -5 Probe
Front Views
Button Function in Configuration Mode
• To enter the Menu, the user must first press 
a
button.
• Use this button to advance/navigate to the next 
menu item. The user can navigate through all the 
top level menus by pressing a.
• While a parameter is being modified, press ato 
escape without saving the parameter.
• Press the up bbutton to scroll through “flashing” 
selections. When a numerical value is displayed 
press this key to increase value of a parameter 
that is currently being modified.
• Pressing the bbutton for approximately 3 seconds 
will speed up the rate at which the set point value 
increments.
• In the Run Mode, pressing the b button changes 
display from RH readings to Temperature 
readings.
• Press the down c button to go back to a previous 
Top Level Menu item. 
• Press this button twice to reset the controller to the 
Run Mode. 
• When a numerical value is flashing (except set point 
value) press cto scroll digits from left to right 
allowing the user to select the desired digit to modify.
• When a setpoint value is displayed press c to 
decrease value of a setpoint that is currently being 
modified. Pressing the c button for approximately 
3 seconds will speed up the rate at which the 
setpoint value is decremented.
• In the Run Mode, pressing the c button changes 
from RH readings to Dewpoint readings.
• Press the enter d button to access the submenus 
from a Top Level Menu item.
• Press d to store a submenu selection or after 
entering a value - the display will flash a 
STRD
message to confirm your selection.
• In the Run Mode, press d twice to enable Standby 
Mode with flashing 
STBY
.
CONFIGURATION
The instrument has two different modes of operation. Run 
Mode: used to display Temperature and Relative Humidity. 
Menu Configuration Mode: used to navigate through the menu 
options and configure the controller.
a
MENU
b
(UP)
c
(DOWN)
d
ENTER
Output 1 and 2 are for -AL Limit Alarm Option only.
DPiTH-i8DH DPiTH-i8DV
HUMd
YES/NO
tEMP
YES/NO
dEU
YES/NO
UNIt
YES/NO
8
8