OMEGA HX200 Dew Point/RH Transmitter User Guide

HX200 Dew Point/RH Transmitter
User Guide

The U.S.A. Headquarters:
Servicing North America:
Omega Engineering, Inc.
Toll-Free: 1-800-826-6342 (USA & Canada only)
Customer Service: 1-800-622-2378 (USA & 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 Visitomega.com/worldwide
Available Models: All models will display either dew point & temperature or RH & temperature.
Outputs will vary depending on the model.

The information contained in this document is believed to be correct, but OMEGA accepts no liability for any errors it contains and reserves the right to alter specifications without notice.

HX200 Series

QUICK STARTUP GUIDE
Installing the probe for compressed air and dryer applications.
For the HX200HD/HX200HD-RS
Install fitting on to probe fitting threads facing the probe’s filter.
Apply Teflon tape to the external threads of the fitting.
Slide probe to desire depth.
Note: be sure the sintered filter is clear of the ferrule on the NPT fitting, hand tight, and then use a wrench a do a quarter turn, Check for leaks, if leaks occur tightened down on fitting another 1/8” turn until leaks have been eliminated, the probe is rated to 750psi.
Installing the probe for environmental applications
For the HX200HR/HX200HR-RS
Mount probe using a ½” (ID) mounting clamp (not provided) over the probe and attached it to a surface where measuring. Avoid installation in direct line with water injection.
For the mounting the HX200 series Electronics
Mount the electronics with two # 8 sheet metals screws
Mounting centers are 3.1” from each other.
Power 12 to 28Vdc, 24 Vdc (typical) 25mA max
HX200 Connections:
Connect red wire (+) to the positive excitation source and the black wire (-) to a negative excitation. The output load if isolated from the excitation voltage can be in line with either the red or black wire. If the load shares a common connection to the negative excitation voltage, the HX200 (-) terminals must be connected to the (+) of the load device.
HX200-RS Connections:
Connect white wire (+) to the positive excitation source and the black wire (-) to a negative excitation. If using the unit as a loop powered device, the output load if isolated from the excitation voltage can be in line with either the white or black wire. If the load shares a common connection to the negative excitation voltage, the unit (-) terminals must be connected to the (+) of the load device. RS232
connections: Receive is the gray conductor, transmit is the blue conductor, ground is the brown conductor.
Verify that the received signal agrees with the display value.
Things to avoid: submersion in liquids, condensing conditions and dew points above 95C (live steam)
Quick reminder: provide sufficient air flow to sensor (positioning of sensor is important because response time can be affected.

HX200-RS wiring

HX200- wiring

INTRODUCTION

GENERAL DESCRIPTION
The HX200 series is a family of humidity probes and electronic modules that offer %RH and dew point measurements with NIST traceable calibration. All stainless-steel probe construction coupled with a high-temperature cable allows up to 200c operations. For pressure applications, the probe is capable of handling 750PSI.
The HX200 series is offered in 8 versions, dew point/temperature-(HX200HD, HX200HD-RS, HX200HD-W, & HX200HD-W-RS), % RH/temperature- (HX200HR, HX200HR- RS, & HX200HR-W, & Hx200HR-W-RS)
The HX200HD pressure version has an enhanced calibration for measuring dew points down to -60C. The HX200HR -RH version has an accuracy of +/-1.0% at 25C. These two models provide a single two-wire loop-powered 4-20mA interface. The HX200-RS version has all the features of the prior models but has an RS232 signal that outputs RH, temperature, and dew point. These units accept a voltage source from 12 to 28Vdc, 24Vdc is recommended. These units will display temperature along with RH or dew point depending on the version selected. The RS232 allows a user to scale their outputs ranges as well as displayed units. The unit and sensor are connected via a 1-meter high- temperature cable. This unit has a single output, 4-20mA output wiring, and can provide a signal up to 400 ft.

HX200 Series

Operating temperature: 0C to 200C, no- condensation condition, non-steam applications, max dew point 95C Electronics 0C to 85C
All units will come with a traceable NIST calibration certificate.

For the HX200HR series
HX200HR is ideal for the environmental chamber, clean rooms, and high- temperature applications

One Analog Output: 4-20mA Loop Power corresponds 0-100% RH.
Output signal resolution: 0.03%RH
Power Supply: 12 to 28Vdc, 25 mA max. 24Vdc
recommended Display resolutions: 0.1% RH
RH Accuracy: +/- 1% at 25C
Temp. Accuracy: +/- 0.5°C from 0 to 100C, >100C +/-1C
Mounting: Cable Length: 1 meter (except wall units)
SS Material: Probe, filter guard and fitting
Dimensions of Probe: Length: 6.5” (185mm), O.D.: 0.5” (13mm)

For the HX200HD series
HX200HD series are ideal units for compressed air and dryer applications.

One Analog Output: 4-20mA Loop Power corresponds -60 to 40C dew point
Output signal resolution: 0.03C
Power Supply: 12 to 28Vdc, 25 mA max.
Display resolutions: 0.1C
Dew Point: Accuracy: +/- 1.0C from 40c to -20C, +/-3.0C <-20C
Temp. Accuracy: +/- 0.5°C from 0 to 100C, >100C +/-1C
Mounting: Cable Length: 1 meter (except wall units)
SS Material: Probe, filter guard and fitting
Fitting: ½” NPT stainless steel (included)
Pressure rating: 750psi
Dimensions of Probe: Length: 6.5” (185mm), O.D.: 0.5” (13mm)

For the HX200-RS series

The HX200-RS meets all the specs listed above for both the HX200HD and HX200HR.
Digital Output: Bidirectional RS-232C outputs will display RH, dew point, and temperature, in the streaming command. The loop power will not function if using the RS232.

Switches for DP or RH and Fahrenheit or Celsius

Located on the circuit board there are two switches. The switch on the left will allow for the customer to switch between DP or RH and the switch on the right allows for the customer to switch between Celsius and Fahrenheit.

Communications from PC to the device
You can streamline your data via the RS232 that gives you all three measurement units.
Using the terminal emulation program, i.e.: HyperTerminal, Tera term, etc.
Rs232 SETTINGS
19.2k Baud Rate
Flow control: none
8 Bits
No Parity
1 Stop Bit

The update rate is 5 seconds for dew point, or RH and temperature
To change the scaling
Connect the HX200 series to the PC via the above settings
When finished connecting to the PC and the protocol is set:
Hit the “escape” key
The main menu will appear (upper case lettering is used to change the commands)
(O)output
(R)s232
E(X)it
Select output and follow the instruction.
It will show the present scaling and if you want to change the scaling, select S for Set and enter the scaling change.
Select ‘Y” to save settings and X for exit until live data streaming appears on your PC, the new scaling has been changed

Wiring Diagram-HX200 Loop Powered

WARRANTY/DISCLAIMER

OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 13 months from the 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, and 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, the 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, THE 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 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 is available BEFORE contacting OMEGA:

1. Purchase Order number to cover the COST of the repair,
2. Model and serial number of the 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 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.

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References

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