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TM
User’s Guide
Shop online
at
omega.com
e-mail: [email protected]
For latest product
manuals:
omega.com/en-us/
pdf-manuals
SRTD-1 & SRTD-2
Surface Mount RTD Temperature
Sensors
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omega.com [email protected]
Omega Engineering, Inc.
800 Connecticut Ave. Suite 5N01, Norwalk, CT 06854, USA
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
email: [email protected]
Omega Engineering,
Limited
1 Omega Drive, Northbank,
Irlam Manchester M44 5BD
United Kingdom
Omega Engineering,
GmbH
Daimlerstrasse 26 75392
Deckenpfronn Germany
For Other Locations Visit omega.com/worldwide
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.
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Table of Contents
1. Dimension Drawing (Inches) ................................................................................................ 3
2. General Description ................................................................................................................. 3
3. Unpacking ................................................................................................................................... 3
4. Mounting Considerations ....................................................................................................... 3
5. Specifications ............................................................................................................................. 4
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1. Dimension Drawing (Inches)
0.62
0.025 MAX
1.00
0.5 MAX
0.06
(OVER LEAD WIRE)
36 +2.00/-0.00
(other sizes available)
0.25 APPROX.
0.25 APPROX.
Figure 1: NEW SRTD Dimension Drawing.eps
2. General Description
OMEGA’s SRTD-1 and SRTD-2 are polyimide insulated surface mount RTD temperature sensors
designed to provide a practical method for measuring surface temperature. These sensors are
small, flexible, and their low mass has minimal thermal effect on the material being measured.
They are ideally suited for applications where the sensor can be mounted to the surface being
measured using adhesives or other mechanical mounting methods.
3. Unpacking
Remove the packing list and verify that all equipment has been received. If there are any
questions about the shipment, please call OMEGA Customer Service Department at:
1-800-622-2378 or 203-359-1660
We can also be reached on the Internet at omega.com e-mail: [email protected]
Upon receipt of the shipment, inspect the container and equipment for any signs of damage.
Take particular note of any evidence of rough handling in transit. Immediately report any damage
to the shipping agent.
4. Mounting Considerations
The SRTD-1 and SRTD-2 “surface mount” RTD’s can be bonded to most surfaces with
OMEGABOND® Epoxy Adhesives #100, #101 and #200. Each epoxy has different temperature
ratings, cure characteristics, and thermal conductivity factors. Information on OMEGABOND
Epoxies can be found in the OMEGA Temperature Measurement Handbook and Encyclopedia®.
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5. Specifications
BLAC
K
K
RED
WHITE
RED
Operating Temperature
Range
Minimum Temperature: -320°F (-200°C)
Maximum Temperature: 500°F (260°C) continuous
Sensing Element: 100 ohm wire wound platinum,
Accuracy: SRTD-1: ±0.50 ohms
Tolerance: Reading SRTD-2: ±0.22 ohms
Stability: <0.2°C drift per year at rated service temperature with proper
Response Time: 70 ms to reach 63.2% of a step change in temperature in water
Self-Heating Effect: The bare sensor will rise less than 1°C while dissipating an I2R
Insulation Resistance: The insulation resistance between outer sensor insulation clamped
Minimum Bend RADII for
Mounting:
Lead Wire: 36” leads, 26 AWG stranded nickel-plated copper, PVA insulated,
Note:
When using epoxies, it is important that the
surfaces to be bonded are clean. Use an
appropriate solvent or detergent for cleaning.
550°F (288°C) short term
(less than 1500 hours)
alpha = 0.00385 ohm/ohm/°C (DIN 43760)
±0.50% of temperature
±0.25% of temperature reading
mounting
flowing at 3 ft/sec transverse to the sensor (ASTM-E-644)
power of 3 milliwatts in still air (ASTM-E-644)
between two metal plates and the common lead wire is 50
megohms minimum with 50 volts dc applied to a dry sensor at
room temperature (ASTM-E-644)
3/8” transverse to element winding,
1-1/2” longitudinal to winding
3-wire configuration (refer to schematic diagram)
BLAC
Figure 2: 3-wire SRTD-2 Wiring
for 72-inch length
WHITE
Figure 3: 3-wire SRTD Wiring
for all other lengths
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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.
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.
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 trademark of OMEGA ENGINEERING, INC.
© Copyright 2019 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 NON-WARRANTY REPAIRS,
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 the product, and
3. Repair instructions and/or specific problems
relative to the product.
consult
Page 7
Where Do I Find Everything I Need for
Process Measurement and Control?
OMEGA…Of Course!
Shop online at omega.com
TEMPERATURE
Thermocouple, RTD & Thermistor Probes, Connectors, Panels & Assemblies
Wire: Thermocouple, RTD & Thermistor
Calibrators & Ice Point References
Recorders, Controllers & Process Monitors
Infrared Pyrometers
PRESSURE, STRAIN AND FORCE
Transducers & Strain Gages
Load Cells & Pressure Gages
Displacement Transducers
Instrumentation & Accessories
FLOW/LEVEL
Rotameters, Gas Mass Flowmeters & Flow Computers
Air Velocity Indicators
Turbine/Paddlewheel Systems
Totalizers & Batch Controllers
pH/CONDUCTIVITY
pH Electrodes, Testers & Accessories
Benchtop/Laboratory Meters
Controllers, Calibrators, Simulators & Pumps
Industrial pH & Conductivity Equipment
DATA ACQUISITION
Communications-Based Acquisition Systems
Data Logging Systems
Wireless Sensors, Transmitters, & Receivers
Signal Conditioners
Data Acquisition Software
HEATERS
Heating Cable
Cartridge & Strip Heaters
Immersion & Band Heaters
Flexible Heaters
Laboratory Heaters
ENVIRONMENTAL
MONITORING AND CONTROL
Metering & Control Instrumentation
Refractometers
Pumps & Tubing
Air, Soil & Water Monitors
Industrial Water & Wastewater Treatment
pH, Conductivity & Dissolved Oxygen Instruments
M1620/1023
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