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WARRANTY/DISCLAIMER

OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and 

workmanship for a period of 

13 months

 from date of purchase. OMEGA’s WARRANTY adds 

an additional one (1) month grace period to the normal 

one (1) year product warranty

 to 

cover handling and shipping time. This ensures that OMEGA’s customers receive maximum 

coverage on each product. 
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 in which wear is not warranted, include 

but are 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 the company will be as 

specified and free of defects. OMEGA MAKES NO OTHER WARRANTIES OR 

REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESSED 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 OMEGA and 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. 

 

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 2016 OMEGA ENGINEERING, 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.

FOR 

WARRANTY

 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-WARRANTY

 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 theproduct, and
3. Repair instructions and/or specific problems  

  relative to the product.

Summary of Contents for HX71 Series

Page 1: ...HX71 SERIES RH Probe Transmitter HX71 NB MODEL HX71 MODEL e mail info omega com For latest product manuals www omegamanual info Shop online at omega comSM User sGuide RoHS 2 Compliant...

Page 2: ...SA Canada only Engineering Service 1 800 872 9436 USA Canada only Tel 203 359 1660 Fax 203 359 7700 e mail info omega com For Other Locations Visit omega com worldwide omega com info omega com The inf...

Page 3: ...neral Description 1 2 Unpacking 1 3 Theory of Operation 2 4 Installation and Mounting 3 4 5 Electrical Connections 5 6 Wiring Examples 6 7 Relative Humidity Output Calculations 6 8 RH Measured Vs Outp...

Page 4: ...asic Transmitter Set up With Current Loop Output 2 Figure 2 HX71 Dimensions 3 Figure 3 HX71 Mounting 3 Figure 4 HX71 NB Dimensions and Mounting 4 Figure 5 Current Transmitter Wiring Example 4 20 mA 6...

Page 5: ...the web you can find us at omega com e mail cservice omega com When you receive the shipment inspect the container and equipment for any signs of damage Note any evidence of rough handling in transit...

Page 6: ...is not exceeded A typical application utilizing a current loop will normally consist of a power supply the transmitter and a meter recorder or controller to measure the current flow The loop resistan...

Page 7: ...this manual in Section 10 OMEGA s HX71 transmitter s are designed for either wall or duct mounting A wall duct mounting kit is available OMEGA Part No HX90DM KIT Figure 1 3 RH USB Dimensions Figure 3...

Page 8: ...gure 4 HX71 NB Dimensions and Mounting 4 Installation and Mounting 52 6 2 07 65 2 56 50 1 97 45 3 1 78 19 5 0 76 38 1 50 MOUNTING HOLE 4 3 0 17 DIA MOUNTING HOLE 4 3 0 17 DIA 16 0 62 DIA DIMENSIONS mm...

Page 9: ...d Model HX71 V1 HX71 V2 HX71 V1 NB HX71 V2 NB 3 Wire Voltage Output Red Wire Power Supply Black Wire Power Output Wire Output White Bare Wire Shield Earth Ground Your HX71 Series RH Probe Transmitter...

Page 10: ...use the following formulas For 4 20 mA output RH Current measured in milliamps 4 0 16 EXAMPLE 11 04 mA 4 0 16 44 RH For 0 to 1 Vdc output RH Voltage measured in volts x 100 EXAMPLE 0 44 Vdc x 100 44 R...

Page 11: ...75 20 7 2 0 20 1 00 25 8 0 0 25 1 25 30 8 8 0 30 1 50 35 9 6 0 35 1 75 40 10 4 0 40 2 00 45 11 2 0 45 2 25 50 12 0 0 50 2 50 55 12 8 0 55 2 75 60 13 6 0 60 3 00 65 14 4 0 65 3 25 70 15 2 0 70 3 50 75...

Page 12: ...ot functioning correctly Maintenance If your Humidity transmitter will be used in a dusty environment the protective sensor cover may be removed for cleaning Unscrew the protective cover and gently bl...

Page 13: ...185 F Output Model HX71 MA HX71 MA NB 4 to 20 mA Scaled for 0 to 100 RH Model HX71 V1 HX71 V1 NB 0 to 5 Vdc Scaled for 0 to 100 RH Model HX71 V2 HX71 V2 NB 0 to 1 Vdc Scaled for 0 to 100 RH Power Mod...

Page 14: ...10 NOTES NOTES HX71 SERIES RH Probe Transmitter...

Page 15: ...therwise 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...

Page 16: ...wheel Systems M U Totalizers Batch Controllers pH CONDUCTIVITY M U pH Electrodes Testers Accessories M U Benchtop Laboratory Meters M U Controllers Calibrators Simulators Pumps M U Industrial pH Condu...

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