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Omega CYD211 User Manual

Single input temperature monitor
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User' s Guide
MADE IN
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e-mail: info@omega.com
CYD211
Single Input Temperature Monitor

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  • Page 1 User’ s Guide MADE IN Shop online at www.omega.com e-mail: info@omega.com CYD211 Single Input Temperature Monitor...
  • Page 2 Toll Free in United Kingdom: 0800-488-488 e-mail: sales@omega.co.uk It is the policy of OMEGA to comply with all worldwide safety and EMC/EMI regulations that apply. OMEGA 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.

  • Page 3: Table Of Contents

    Omega Model CYD211 User’s Manual TABLE OF CONTENTS Chapter/Paragraph Title Page INTRODUCTION ................1-1 GENERAL ................1-1 DESCRIPTION ...............1-1 SPECIFICATIONS ..............1-3 SAFETY SUMMARY .............1-8 SAFETY SYMBOLS ...............1-9 INSTALLATION ................2-1 GENERAL ................2-1 INSPECTION AND UNPACKING..........2-1 REAR PANEL DEFINITION...........2-2 POWER INPUT CONNECTOR..........2-2 EXTERNAL POWER SUPPLY ..........2-3...
  • Page 4 Omega Model CYD211 User’s Manual TABLE OF CONTENTS (Continued) Chapter/Paragraph Title Page ANALOG OUTPUT SETUP ........... 3-8 ANALOG OUTPUT TO TEMPERATURE CONVERSION ..3-9 3.10 LOCKING AND UNLOCKING THE KEYPAD....3-10 3.11 RESETTING THE 211 TO DEFAULT VALUES ....3-10 3.12...
  • Page 5 Model CYD211 Rear Panel..............2-2 Power Connector.................2-3 Input/Output Connector ...............2-4 Panel Mounting Details ...............2-9 2111 & 2112 Panel Mount Adapters...........2-10 Model CYD211 Display ..............3-2 Model CYD211 Main PCB Layout ............5-5 Power Connector.................5-6 Input/Output Connector ...............5-6 RS-232 (DTE) Connector ..............5-7 LIST OF TABLES Table No.

  • Page 7: Introduction

    800 K and in difficult sensing conditions, including high vacuum and magnetic fields. Alarms, relays, user-configurable analog voltage or current output, and a serial interface are standard features on the Model CYD211. Backed by the Omega tradition of excellence in cryogenic and precision...
  • Page 8 CYD211 is valuable as a stand-alone monitor and is easily integrated into other systems. Setup and every instrument function can be performed via serial interface or the front panel of the Model CYD211. High and low alarms can be used in latching mode for error limit detection and in non- latching mode in conjunction with relays to perform simple on-off control functions.

  • Page 9: Specifications

    Omega Model CYD211 User’s Manual SPECIFICATIONS Thermometry Number of Inputs: 1 Measurement Type: 4-lead differential Excitation: Constant current, 10 µA or 1 mA Isolation: Measurement is not isolated from chassis ground A/D Resolution: 24 bit Input Accuracy: Sensor dependent. Refer to Table 1-2 Measurement Resolution: Sensor dependent.
  • Page 10 Omega Model CYD211 User’s Manual Interface Specifications (Continued) Relays: Number: 2 Contacts: Normally Open (NO), Normally Closed (NC), and Common (C) Contact Rating: 30 VDC at 1 A Settings: manually off, manually on, follows alarms Connector: DB-25 (shares input connector)
  • Page 11 Omega Model CYD211 User’s Manual Ordering Information Model 211S Model CYD211 with 100 – 250 V (universal input), 17 VA power supply Power Options VAC-120 Includes U.S. line cord VAC-220 Includes European line cord Accessories included with the Model CYD211 Temperature Monitor...
  • Page 12 Omega Model CYD211 User’s Manual Table 1-2. Sensor Input Performance Chart Sensor Type Silicon Diode GaAlAs Diode Temperature Coefficient Negative Negative Sensor Units Volts (V) Volts (V) Input Range 0 – 2.5 V 0 – 7.5 V Sensor Excitation 10 µA ±0.01% 10 µA ±0.01%...
  • Page 13 Omega Model CYD211 User’s Manual Table 1-2. Sensor Input Performance Chart (Continued) Ω Platinum RTD Ω 1000 Platinum RTD Cernox™ RTD Ω Full Scale Positive Positive Negative Ω Ω Ω Ohms ( Ohms ( Ohms ( Ω Ω Ω 0 – 500 0 –...

  • Page 14: Safety Summary

    The Model CYD211 is designed for indoor use only. Improper use of the instrument may pose a hazard to the operator and surrounding area. The power supply included with the Model CYD211 meets or exceeds the International Safety Standard for Information Technology Equipment, IEC-60950.

  • Page 15: Safety Symbols

    Safety Summary (Continued) Do Not Substitute Parts Or Modify Instrument Do not install substitute parts or perform any unauthorized modification to the instrument. Return the instrument to an authorized Omega representative for service and repair to ensure that safety features are maintained.
  • Page 16 Omega Model CYD211 User’s Manual This Page Intentionally Left Blank 1-10 Introduction...

  • Page 17: Installation

    • Line Power Cord Contact Omega immediately if there is a shortage of parts or accessories. Omega is not responsible for any missing items if not notified within 60 days of shipment. Inspect all items for both visible and hidden damage that occurred during shipment.

  • Page 18: Rear Panel Definition

    Figure 2-1. Model CYD211 Rear Panel POWER INPUT CONNECTOR Power is supplied to the Model CYD211 through a 5-pin DIN connector located on the rear panel of the instrument. There is no power switch on the instrument, so it is off when not plugged in, or on when plugged in. Make sensor connections before applying power to the instrument.

  • Page 19: External Power Supply

    5-pin DIN connector for the output. It can output +5 V at 1 A, +15 V at 400 mA, and –15V at 400 mA. One power supply can provide power for up to three Model CYD211's with a user supplied adapter cable. The power supply is CE Certified and meets or exceeds the following safety standards: UL 1950, CSA C22.2, and IEC 60950.

  • Page 20: Sensor Lead Cable

    Omega Model CYD211 User’s Manual P-211-2-3.bmp Description Description No Connection — — Shield Shield I– V– Shield Shield Analog Output Signal Analog Output Ground No Connection No Connection Low Alarm COM Low Alarm N.O. Low Alarm N.C. No Connection No Connection...

  • Page 21: Shielding Sensor Leads

    The measurement leads have a finite impedance to chassis ground and should not be tied to ground outside the instrument or an error in reading may result. The Model CYD211 has the best noise performance when the chassis is tied to earth ground. This connection should be made at only one point so as to avoid ground loops.

  • Page 22: Sensor Polarity

    Omega Model CYD211 User’s Manual 2.5.5 Sensor Polarity Omega sensors ship with instructions that indicate which sensor leads are which. It is important to follow these instructions for plus and minus leads (polarity) as well as voltage and current when applicable. Diode sensors do not operate in the wrong polarity.

  • Page 23: Two-Lead Sensor Measurement

    Omega Model CYD211 User’s Manual 2.5.7 Two-Lead Sensor Measurement Sometimes a crowded cryogenic system forces users to read sensors in a two-lead configuration because there are not enough feedthroughs or room for lead wires. If this is the case, plus voltage to plus current and minus voltage to minus current leads are attached at the back of the instrument or at the vacuum feedthrough.

  • Page 24: Analog Output

    Omega Model CYD211 User’s Manual ANALOG OUTPUT The Analog Output available on the rear panel of the Model CYD211 can be configured as either a voltage or current output that can be used for monitor and control applications. Its most basic function is a temperature monitor where it puts out a voltage or current that is proportional to temperature.

  • Page 25: Panel Mounting

    The Model CYD211 can be easily panel mounted using the panel mount brackets included. The Model CYD211 fits in a 91 × 44 mm (3.6 × 1.7 inch) cutout. To panel mount the instrument, unplug the unit and then use a inch hex wrench to remove the 2 set screws holding the brackets in place.
  • Page 26 Omega Model CYD211 User’s Manual Cutout_Panels.bmp Figure 2-5. 2111 and 2112 Panel Mount Adapters 2-10 Installation...

  • Page 27: Operation

    Paragraph 5.3.2, Limit Errors, do not indicate a problem with the instrument and will disappear when input setup is complete. The Model CYD211 should be allowed to warm up for a minimum of 30 minutes to achieve rated accuracy. DISPLAY DEFINITION The Model CYD211 has a 6-digit LED display capable of showing both numeric and character data.

  • Page 28: Led Annunciators & Display Messages

    Omega Model CYD211 User’s Manual 211_Display.eps Figure 3-1. Model CYD211 Display LED ANNUNCIATORS AND DISPLAY MESSAGES The display units are indicated using LED annunciators below the right side of the main display. LED Annunciators °C The display units are in degrees Celsius.

  • Page 29: Keypad Definition

    Omega Model CYD211 User’s Manual KEYPAD DEFINITION The Model CYD211 has 4 keys on the front panel to setup instrument functions. A list of front panel setup operations is shown in the Model CYD211 Menu Structure located on the inside back cover of this manual.

  • Page 30: Input Setup

    INPUT SETUP 3.5.1 Input Type The Model CYD211 supports a variety of temperature sensors sold by Omega and other manufactures. An appropriate sensor type must be selected for the input. Refer to Table 3-1 for a list of common sensor types.

  • Page 31: Curve Selection

    CalCurve option can be stored as the user curve at the factory or by the customer. The complete list of standard curves built in to the Model CYD211 is provided in Table 3-2. Curve tables are listed in Appendix A of this manual.

  • Page 32: Display Units Selection

    When the desired unit is highlighted, press the Enter key. ALARM SETUP AND OPERATION The input of the CYD211 has high and low alarm capability. Temperature reading data in Kelvin can be compared to the alarm setpoint values. A...

  • Page 33: Relay Setup

    RELAY SETUP There are two relays on the CYD211 numbered 1 and 2. They are most commonly thought of as alarm relays, but they may be manually controlled. The relays are rated for 30 VDC and 1 A. The terminals are in the Input/Output connector on the CYD211 rear panel.

  • Page 34: Analog Output Setup

    Omega Model CYD211 User’s Manual ANALOG OUTPUT SETUP The Model CYD211 has a single analog output. It is normally configured to provide an analog signal proportional to temperature to a strip chart recorder or separate data acquisition system. Pins 6 and 18 on the DB-25 Input/Output connector are used for the analog output.

  • Page 35: Analog Output To Temperature Conversion

    Omega Model CYD211 User’s Manual Table 3-3. Analog Table 3-4. Analog Output Output Range Scales Scales In Sensor Units Range High Input High Numbe Output Output Type Output Output 20 K Silicon Diode 10 V 100 K GaAlAs Diode 10 V 200 K PT-100, 250 Ω...

  • Page 36: 3.10 Locking And Unlocking The Keypad

    CYD211 are shown below in Table 3-6. Resetting to default values does not affect the user curve or the calibration data. To reset the Model CYD211 to default values, press and hold both the s or t keys for 10 seconds. All of the LED digits will illuminate when the memory has been reset.

  • Page 37: Curve Entry & Storage

    Standard curves can not be changed by the user, and reserved locations are not available for user curves. The Model CYD211 has one user curve location. The user curve can only be entered using the serial interface. Refer to Paragraph 4.2 for the serial interface curve commands.

  • Page 38: Curve Breakpoints

    The breakpoints should be entered with the sensor units value increasing as point number increases. There should not be any breakpoint locations left blank in the middle of a curve. The search routine in the Model CYD211 interprets a blank breakpoint as the end of the curve.

  • Page 39: Remote Operation

    4.1.1 Physical Connection The Model CYD211 has a 9 pin D-Subminiature plug on the rear panel for serial communication. The original RS-232C standard specifies 25 pins but both 9- and 25-pin connectors are commonly used in the computer industry.

  • Page 40: Hardware Support

    4.1.2 Hardware Support The Model CYD211 interface hardware supports the following features. Asynchronous timing is used for the individual bit data within a character. This timing requires start and stop bits as part of each character so the transmitter and receiver can resynchronized between each character. Half duplex transmission allows the instrument to be either a transmitter or a receiver of data but not at the same time.

  • Page 41: Character Format

    Omega Model CYD211 User’s Manual 4.1.3 Character Format A character is the smallest piece of information that can be transmitted by the interface. Each character is 10 bits long and contains data bits, bits for character timing and an error detection bit. The instrument uses 7 bits for data in the ASCII format.

  • Page 42: Message Flow Control

    Omega Model CYD211 User’s Manual Message Strings (Continued) A command string is issued by the computer and instructs the instrument to perform a function or change a parameter setting. The format is <command mnemonic><space><parameter data><terminators>. Command mnemonics are listed in Paragraph 4.2. Parameters necessary for each one are described in Paragraph 4.2.1.

  • Page 43: Serial Interface Basic Programs

    Omega Model CYD211 User’s Manual Message Flow Control (Continued) NOTE: The serial interface will not function during front panel setup operations. Do not use the front panel during serial communications. Failure to follow these rules may result in inability to establish communication with the instrument or intermittent failures in communication.
  • Page 44 Omega Model CYD211 User’s Manual Visual Basic Serial Interface Program Setup (Continued) 9. In the Properties window, use the dropdown list to select between the different controls of the current project. 10. Set the properties of the controls as defined in Table 4-2.
  • Page 45 Omega Model CYD211 User’s Manual Visual Basic Serial Interface Program Setup (Continued) 12. Add code (provided in Table 4-3). In the Code Editor window, under the Object dropdown list, select (General). Add the statement: Public gSend as Boolean Double Click on cmdSend. Add code segment under Private Sub cmdSend_Click( ) as shown in Table 4-3.
  • Page 46 Omega Model CYD211 User’s Manual Table 4-3. Visual Basic Serial Interface Program Public gSend As Boolean 'Global used for Send button state Private Sub cmdSend_Click() 'Routine to handle Send button press gSend = True 'Set Flag to True End Sub...
  • Page 47 Omega Model CYD211 User’s Manual Table 4-3. Visual Basic Serial Interface Program (Continued) frmSerial.MSComm1.Output = strCommand & Term ' Send command to instrument If InStr(strCommand, "?") <> 0 Then 'Check to see if query While (ZeroCount < 20) And (strHold <> Chr$(10)) 'Wait for response If frmSerial.MSComm1.InBufferCount = 0 Then...
  • Page 48 Omega Model CYD211 User’s Manual 4.1.6.2 Quick Basic Serial Interface Program Setup The serial interface program (Table 4-4) works with QuickBasic 4.0/4.5 or Qbasic on an IBM PC (or compatible) running DOS or in a DOS window with a serial interface. It uses the COM1 communication port at 9600 Baud.
  • Page 49 Omega Model CYD211 User’s Manual Table 4-4. Quick Basic Serial Interface Program 'Clear screen PRINT " SERIAL COMMUNICATION PROGRAM" PRINT TIMEOUT = 2000 'Read timeout (may need more) BAUD$ = "9600" TERM$ = CHR$(13) + CHR$(10) 'Terminators are <CR><LF> OPEN "COM1:" + BAUD$ + ",O,7,1,RS" FOR RANDOM AS #1 LEN = 256 LOOP1: LINE INPUT "ENTER COMMAND (or EXIT):";...

  • Page 50: Trouble Shooting

    Omega Model CYD211 User’s Manual Program Operation (Continued) The following are additional notes on using either Serial Interface program. • If you enter a correctly spelled query without a “?,” nothing will be returned. Incorrectly spelled commands and queries are ignored.
  • Page 51 Omega Model CYD211 User’s Manual Serial Interface Command Summary (Continued) Commands may additionally include Remarks and Examples. Command.eps Query.eps Key: Begins common interface command. Required to identify queries. aa… String of alpha numeric characters. nn… String of number characters that may include a decimal point.
  • Page 52 Omega Model CYD211 User’s Manual Table 4-5. Interface Commands (Alphabetical Listing) Command Function Page Identification Query ............15 QIDN? Reset Instrument Command..........15 QRST ALARM Input Alarm Parameter Command........15 ALARM? Input Alarm Parameter Query.........16 ALMRST Alarm Reset Status Command ........16 ANALOG Analog Output Parameter Command.......16 ANALOG? Analog Output Parameter Query........16...

  • Page 53: Interface Commands

    Omega Model CYD211 User’s Manual 4.2.1 Interface Commands (In Alphabetical Order) *IDN? Identification Query Input: *IDN?[term] Returned: <manufacturer>,<model>,<serial>,<date>[term] Format: aaaa,aaaaaaaa,aaaaaaa,mmddyy <manufacture> Manufacturer ID <model> Instrument model number <serial> Serial number <date> Instrument firmware revision date Example: LSCI,MODEL211,1234567,013001 *RST Reset Instrument Command...

  • Page 54: Alarm

    Omega Model CYD211 User’s Manual ALARM? Input Alarm Parameter Query Input: ALARM?[term] Returned: <off/on>, <high value>, <low value>, <deadband>, <latch enable> [term] Format: n,+nnn.n,+nnn.n,+nn.n,n (Refer to command for description) ALMRST Reset Alarm Status Command Input: ALMRST[term] Remarks: Clears both the high and low status of the alarm, including latching alarm.

  • Page 55: Brigt

    Omega Model CYD211 User’s Manual BRIGT Display Brightness Command Input: BRIGT <bright>[term] Format: <bright> Sets display brightness. Valid entries: 0 – 15, 0 = least bright, 15 = most bright. Default = 8. BRIGT? Display Brightness Query Input: BRIGT?[term] Returned: <bright>[term]...

  • Page 56: Crvhdr? Curve Header Query

    Omega Model CYD211 User’s Manual Curve Header Command (Continued) Example: CRVHDR 21,DT-470,00011134,2,325.0,1[term] – Configures User Curve 21 with a name of DT-470, serial number of 00011134, data format of volts versus Kelvin, upper temperature limit of 325 K, and negative coefficient.

  • Page 57: Dflt Factory Defaults Command

    Omega Model CYD211 User’s Manual DFLT Factory Defaults Command Input: DFLT 99[term] Remarks: Sets all configuration values to factory defaults and resets the instrument. The "99" is included to prevent accidentally setting the unit to defaults. DISPFLD Displayed Field Command Input: DISPFLD <source>[term]...

  • Page 58: Input Curve Number Query

    Omega Model CYD211 User’s Manual INCRV? Input Curve Number Query Input: INCRV?[term] Returned: <curve number>[term] Format: (Refer to command for description) INTYPE Input Type Parameter Command Input: INTYPE <sensor type>[term] Format: <sensor type> Specifies input sensor type. Valid entries: 3 = 100 Ω Platinum/500 0 = Silicon Diode 4 = 1000 Ω...

  • Page 59: Lock Front Panel Keypad Lock Command

    Omega Model CYD211 User’s Manual LOCK Front Panel Keypad Lock Command Input: LOCK <state>[term] Format: <state> 0 = Unlocked, 1 = Locked Remarks: Locks out all front panel entries. Refer to Paragraph 3.10. Example: LOCK 1[term] – Enables keypad lock.

  • Page 60: Relay

    Omega Model CYD211 User’s Manual RELAY? Relay Control Parameter Query Input: RELAY? <relay number>[term] Format: <relay number> Specifies which relay to query: 1 = low alarm relay, 2 = high alarm relay. Returned: n (Refer to command for description) SRDG?

  • Page 61: Service

    Omega Model CYD211 User’s Manual CHAPTER 5 SERVICE GENERAL This chapter provides basic service information for the Model CYD211 Temperature Monitor. Factory trained service personnel should be consulted if the instrument requires repair. ERROR MESSAGES The following messages appear on the instrument display when it identifies a problem during operation.

  • Page 62: Limit Errors

    Omega Model CYD211 User’s Manual 5.1.2 Limit Errors Input is at or under zero output. ERR 05 Input is at or over full-scale. ERR 06 Temperature conversion is off the low end of the curve ERR 07 Temperature conversion is off the high end of the curve ERR 08 No curve is selected for the input.

  • Page 63: Firmware Replacement

    Omega Model CYD211 User’s Manual FIRMWARE REPLACEMENT There is one integrated circuit (IC) that may potentially require replacement. See Figure 5-1 for IC location. Firmware Microcontroller (U1) – Contains the software that runs the entire instrument. Has a sticker on top labeled “M211F.HEX” and a version number or date.

  • Page 64: Model Cyd211 Main Pcb Layout

    Omega Model CYD211 User’s Manual 211_PCB.bmp Figure 5-1. Model CYD211 Main PCB Layout Service...

  • Page 65: Connector Definitions

    Omega Model CYD211 User’s Manual CONNECTOR DEFINITIONS The POWER, INPUT/OUTPUT, and RS-232 (DTE) connectors are defined in Figures 5-2 thru 5-4. Description Ground Ground –15V +15V Figure 5-2. Power Connector P-211-2-3.bmp Description Description No Connection — — Shield Shield I–...

  • Page 66: Rs-232 (Dte) Connector

    Omega Model CYD211 User’s Manual Serial Connector.bmp CYD211Temperature Monitor Typical Computers DE-9P (DTE) DB-25P (DTE) DE-9P (DTE) Description Description Description No Connection TD (out) DCD (in) Receive Data (RD in) RD (in) RD (in) Transmit Data (TD out) RTS (out)

  • Page 67: Serial Interface Cable Wiring

    Serial Interface Cable Wiring The following are suggested cable wiring diagrams for connecting the CYD211 Serial Interface to various Customer Personal Computers (PCs). NOTE: Same as null modem cable design except PC CTS is provided from the CYD211 on DTR.
  • Page 68 Omega Model CYD211 User’s Manual This Page Intentionally Left Blank Service...

  • Page 69: Options And Accessories

    211S Power Options: VAC-120 Includes U.S. line cord VAC-220 Includes European line cord ACCESSORIES A list of accessories available for the Model CYD211 are as follows: Model Description of Accessory Sensor input mating connector (DB-25) 106-253* Shell for sensor input mating connector 106-264* Panel mount adapter for one CYD211 into 105 mm Wide ×...

  • Page 70: Wires

    Omega Model CYD211 User’s Manual WIRES Common cryogenic wire available from Omega. Other wire and installation accessories are also available. Cable Description 9001-005 Quad-Twist™ Cryogenic Wire. Two twisted pairs, phosphor-bronze wire, 36 AWG, 0.127 mm (0.005 inch) diameter. 9001-006 Duo-Twist™ Cryogenic Wire. Single twisted pair, phosphor-bronze wire, 36 AWG, 0.127 mm (0.005 inch)

  • Page 71: Appendix Acurve Tables

    Omega Model CYD211 User’s Manual APPENDIX A CURVE TABLES A1.0 GENERAL The following curve tables are applicable to the CYD211 Temperature Monitor. Curve 1 DT-470 Silicon Diode ..........Table A-1 Curve 2 DT-670 Silicon Diode ..........Table A-2 Curve 3 CTI Curve C Silicon Diode ........Table A-3 Curve 6 PT-100 Platinum RTD ..........Table A-4...
  • Page 72 Omega Model CYD211 User’s Manual Table A-2. Omega DT-670 Silicon Diode Break- Temp. Break- Temp. Break- Temp. Volts Volts Volts point point point 500.0 0.090570 87.0 1.01064 20.2 1.19475 491.0 0.110239 81.0 1.02125 17.10 1.24208 479.5 0.136555 75.0 1.03167 15.90 1.26122...
  • Page 73 Omega Model CYD211 User’s Manual Table A-3. CTI Curve C Silicon Diode Breakpoint Temp. (K) Volts 320.0 0.2968 305.0 0.3382 295.0 0.3640 285.0 0.3911 280.0 0.4050 270.0 0.4341 250.0 0.4896 195.0 0.6408 165.0 0.7255 140.0 0.7971 130.0 0.8245 125.0 0.8376 115.0...
  • Page 74 Omega Model CYD211 User’s Manual Table A-4. Omega PT-100/-1000 Platinum RTD Curves Break- PT-100 PT-1000 point Temp. (K) Temp. (K) Ohms (Ω) Ohms (Ω) 030.0 3.820 030.0 38.20 032.0 4.235 032.0 42.35 036.0 5.146 036.0 51.46 038.0 5.650 038.0 56.50 040.0...
  • Page 75 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;...
  • Page 76 Where Do I Find Everything I Need for Process Measurement and Control? OMEGA…Of Course! Shop online at www.omega.com TEMPERATURE Thermocouple, RTD & Thermistor Probes, Connectors, Panels & Assemblies Wire: Thermocouple, RTD & Thermistor Calibrators & Ice Point References Recorders, Controllers & Process Monitors...

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