Page 3 - Table of Contents; TABLE OF CONTENTS; Title; LHe and LN
OMEGA Model CYD201/CYD208 User’s Manual Table of Contents i TABLE OF CONTENTS Chapter/Paragraph Title Page 1 INTRODUCTION ..........................................................................1-11.0 General .......................................................................1-1 1.1 Model CYD2...
Page 5 - LIST OF ILLUSTRATIONS; LIST OF TABLES
OMEGA Model CYD201/CYD208 User’s Manual Table of Contents iii LIST OF ILLUSTRATIONS Figure No. Title Page 1-1 Typical Cryogenic Dewar ..........................................................1-3 2-1 Model CYD201 Sensor Connector J1 Details ...........................2-6 2-2 Model CYD208 Sensor Conn...
Page 6 - This Page Intentionally Left Blank
OMEGA Model CYD201/CYD208 User’s Manual iv Table of Contents This Page Intentionally Left Blank
Page 7 - Introduction; CHAPTER 1; GENERAL; • System Accuracy (Instrument with Sensor) with SoftCalTM to within
OMEGA Model CYD201/CYD208 User’s Manual Introduction 1-1 CHAPTER 1 INTRODUCTION 1.0 GENERAL This chapter covers a general description of the Model CYD201/CYD208(Paragraph 1.1), Handling Liquid Helium and Liquid Nitrogen (Paragraph 1.2),Electrostatic Discharge (Paragraph 1.3), Safety Summary (Paragra...
Page 9 - HANDLING LIQUID HELIUM AND LIQUID NITROGEN; Handling Cryogenic Storage Dewars; Transfer LHe and LN; WARNING; Cryogenic Dewar
OMEGA Model CYD201/CYD208 User’s Manual Introduction 1-3 1.2 HANDLING LIQUID HELIUM AND LIQUID NITROGEN Helium and Nitrogen are colorless, odorless, and tasteless gases. Theyliquefy when properly cooled. Liquid helium (LHe) and liquid nitrogen (LN 2 ) may be used in conjunction with the Model CYD201...
Page 10 - Recommended First Aid; MSDS specifies symptoms of overexposure and first aid.; ELECTROSTATIC DISCHARGE
OMEGA Model CYD201/CYD208 User’s Manual 1-4 Introduction W hen transferring LHe and LN 2 , protect eyes and skin from accidental contact with liquid or the cold gas issuing from it. Protect eyes with full faceshield or chemical splash goggles; safety glasses (even with side shields)are inadequate. A...
Page 11 - Identifying ESDS Components; Below are some industry symbols used to label components as ESDS:; Handling ESDS Components; Place unit on a grounded conductive work surface.; SAFETY SUMMARY
OMEGA Model CYD201/CYD208 User’s Manual Introduction 1-5 1.3.1 Identifying ESDS Components Below are some industry symbols used to label components as ESDS: 1.3.2 Handling ESDS Components Observe all precautions necessary to prevent damage to ESDS componentsbefore installation. Bring the device and ...
Page 12 - SAFETY SYMBOLS
OMEGA Model CYD201/CYD208 User’s Manual 1-6 Introduction Do Not Operate In An Explosive AtmosphereDo not operate the instrument in the presence of flammable gases or fumes.Operation of any electrical instrument in such an environment constitutes adefinite safety hazard. Keep Away From Live CircuitsO...
Page 13 - Installation; CHAPTER 2; Instrument model and serial number.
OMEGA Model CYD201/CYD208 User’s Manual Installation 2-1 CHAPTER 2 INSTALLATION 2.0 GENERAL This chapter covers Inspection and Unpacking (Paragraph 2.1),Repackaging for Shipment (Paragraph 2.2), Sensor InstallationRecommendations (Paragraph 2.3) Power and Ground Requirements(Paragraph 2.4), Sensor C...
Page 15 - Four-Lead Measurement
OMEGA Model CYD201/CYD208 User’s Manual Installation 2-3 3. Keep leads as short as possible. 4. Use twisted-pair wire. Use Duo-Twist™ wire (or equivalent) for two-wire, or Quad-Twist™ wire (or equivalent) for four-wire applications. 5. Thermally anchor lead wires. 2.4.1 Two-Lead Vs Four-Lead Measure...
Page 16 - Connecting Leads To The Sensor; sufficient
OMEGA Model CYD201/CYD208 User’s Manual 2-4 Installation 2.4.2 Connecting Leads To The Sensor Excessive heat flow through connecting leads to any temperature sensormay differ the temperature between the active sensing element and thesample to which the sensor mounts. This reflects as a real temperat...
Page 17 - Measurement Errors Due To AC Noise
OMEGA Model CYD201/CYD208 User’s Manual Installation 2-5 For temporary mounting in cold temperature applications, apply a thin layerof Apiezon ® N Grease between the sensor and sample to enhance thermal contact under slight pressure. The preferred method for mounting theCY-7-SD sensor is the OMEGA C...
Page 19 - SENSOR CURVE DEFINITION; Remove front feet on bottom of unit and attach lower rack piece by
OMEGA Model CYD201/CYD208 User’s Manual Installation 2-7 2.6 SENSOR CURVE DEFINITION To display accurate temperature, select a response curve that matches theinstalled sensor. There are seven standard curves stored within the ModelCYD201/CYD208 numbered 0 through 6 (see Appendix A). Different curves...
Page 21 - INITIAL POWER UP SEQUENCE; The test sequence below occurs at power up.; POWER UP ERRORS
OMEGA Model CYD201/CYD208 User’s Manual Installation 2-9 2.8 INITIAL POWER UP SEQUENCE The test sequence below occurs at power up. 1. All display segments light. 2. The unit displays “-201-” or “-208-”. 3. The instrument begins normal operation. Units currently selected flash. Model CYD208s also ind...
Page 23 - Operation; CHAPTER 3
OMEGA Model CYD201/CYD208 User’s Manual Operation 3-1 CHAPTER 3 OPERATION 3.0 GENERAL This chapter covers the Units Key (Paragraph 3.1), the Channel key(Paragraph 3.2), Scan Mode (Paragraph 3.3), Setting Dwell Times(Paragraph 3.4), Alarm Operation (Paragraph 3.5), SoftCal™Compensations (Paragraph 3....
Page 24 - CHANNEL scrolls through the eight possible sensor channels.; It also; ALARM OPERATION; Alarm Setpoint; Make sure the SET switch is in position 1.
OMEGA Model CYD201/CYD208 User’s Manual 3-2 Operation 3.2 CHANNEL KEY (Model CYD208 Only) CHANNEL scrolls through the eight possible sensor channels. It also determines if scan mode is activated. Hold 1 to 2 seconds to toggle scanmode On or Off. A red light glows in the upper left channel display if...
Page 25 - Latched And Unlatched Alarms; not automatically turn Off when the temperature; SOFTCALTM COMPENSATIONS
OMEGA Model CYD201/CYD208 User’s Manual Operation 3-3 2. Hold UNITS until the desired temperature displays. UNITS is a toggle; if it is released and pressed again, the temperature direction reverses. Ifthe temperature display increases, the alarm is a high setpoint. If thetemperature display decreas...
Page 26 - SoftCalTM Calibration Procedure
OMEGA Model CYD201/CYD208 User’s Manual 3-4 Operation SoftCal™ calibrations are made at three temperature points: liquid helium(4.2 K), liquid nitrogen (about 77 K), and 305 K. Below is the accuracy* ofthe CY-7-SD-13 sensor: +0.5 K 2 K to <30 K +0.25 K 345 K to <375 K +0.25 K 30 K to <60 K ...
Page 27 - Verifying SoftCalTM Operation; display moves in the wrong direction, release and press again.; Press CAL ENABLE on rear panel using a pen tip. The display changes
OMEGA Model CYD201/CYD208 User’s Manual Operation 3-5 3.6.2 Verifying SoftCal™ Operation Check the status of SoftCal™ by holding UNITS for 2-3 seconds. IfSoftCal™ is not in operation, "-000-" displays. If the first digit of the display is 1, SoftCal™ is set for below 28 K. If eitherthe secon...
Page 29 - Remote Operation; CHAPTER 4; Asynchronous; Data Interface Levels:; Transmits/Receives Using EIA Levels; Serial Interface Connections
OMEGA Model CYD201/CYD208 User’s Manual Remote Operation 4-1 CHAPTER 4 REMOTE OPERATION 4.0 GENERAL The Model CYD201/CYD208 Digital Thermometer Serial Interface can beused for both operation and service. This chapter covers the Serial Interface(Paragraph 4.1) and Serial Interface Commands (Paragraph...
Page 30 - PIN
OMEGA Model CYD201/CYD208 User’s Manual 4-2 Remote Operation Figure 4-1. Serial I/O (RJ-11) Connector Pin Definitions T o Cus to m e r S u p p lie d Co m p ut e r D B -9 S e ri al I n te rf a c e C o n n ec to r J2 SERIAL I/O T o Cu s tom er S u pp lied C o m p u ter D B -2 5 S eri al I n te rf a ce...
Page 32 - Sample Quick Basic 4.0 Program; SERIAL INTERFACE COMMAND SUMMARY; Command Function Command Function; Below is an explanation of the command list structure.
OMEGA Model CYD201/CYD208 User’s Manual 4-4 Remote Operation 4.1.4 Sample Quick Basic 4.0 Program STARTUP: OPEN “COM1:300,O,7,1,RS” FOR RANDOM AS #1 ‘open the serial port PRINT “TYPE ‘QUIT’ TO EXIT” ‘print ‘QUIT’ message RESTART: PRINT ‘print blank line INPUT “ENTER COMMAND”; A$ ‘get command to send...
Page 33 - Yab
OMEGA Model CYD201/CYD208 User’s Manual Remote Operation 4-5 F0 Sets Sensor Units for Temperature Display. Input: F0x Returned: NothingRemarks: Sets sensor units for the temperature display, wherex = C (Celsius), F (Fahrenheit), K (kelvin), or V (volts). H Select High Alarm Setpoint Value. Input: Hx...
Page 34 - YC; YCx; YH; YS; WA; Switch ID and Alarm Data.
OMEGA Model CYD201/CYD208 User’s Manual 4-6 Remote Operation YC Channel Scanner Channel (Model CYD208 Only). Input: YCx Returned: NothingRemarks: Asynchronously selects a scanner channel for readoutindependent of scan feature, where x = channel 1 - 8. YH End Scanning (Model CYD208 Only). Input: YH R...
Page 35 - Sample Sensor Reading and Alarm Status.; WS; WY
OMEGA Model CYD201/CYD208 User’s Manual Remote Operation 4-7 WS Sample Sensor Reading and Alarm Status. Input: WS Returned: For a Model CYD201, returns: [sign],[sensor reading],[units],[alarm status] (CR)(LF) For a Model CYD208, returns: [current channel],[sign],[sensor reading],[units], [alarmstatu...
Page 37 - Service; CHAPTER 5
OMEGA Model CYD201/CYD208 User’s Manual Service 5-1 CHAPTER 5 SERVICE 5.0 GENERAL This chapter covers Model CYD201/CYD208 maintenance: Model CYD201Rear Panel Connections (Paragraph 5.1), Model CYD208 Rear PanelConnections (Paragraph 5.2), Error Code Troubleshooting (Paragraph 5.3),General Maintenanc...
Page 38 - MODEL CYD208 REAR PANEL CONNECTIONS
OMEGA Model CYD201/CYD208 User’s Manual 5-2 Service 5.2 MODEL CYD208 REAR PANEL CONNECTIONS Figure 5-2. Model CYD208 Rear Panel Connections J1 INPUTS: Accepts 36-pin “D” style connector (208-MC) and multi-sensoradapters. Adapter sits on top of thermometer and accepts up to 8temperature sensors. Adap...
Page 41 - RECALIBRATION; precision resistors with ±0.01% tolerance or; Current Source Calibration; resistor as shown in Figure 5-4. Set Model CYD208 to
OMEGA Model CYD201/CYD208 User’s Manual Service 5-5 5.7 RECALIBRATION OMEGA calibrates and certifies thermometers to original factoryspecifications for a reasonable fee. You can recalibrate the thermometer tooriginal specifications, but OMEGA will not warrant these calibrations. Recalibration requir...
Page 42 - A/D Converter Calibration; NOTE: Current source calibration
OMEGA Model CYD201/CYD208 User’s Manual 5-6 Service 5.7.2 A/D Converter Calibration NOTE: Current source calibration must be performed before A/D converter calibration. 1. Allow 30 minute warm-up to achieve rated specifications. 2. Perform current source calibration. 3. Configure 125 k resistor as s...
Page 46 - Options and Accessories; MODEL
OMEGA Model CYD201/CYD208 User’s Manual 6-2 Options and Accessories ACCESSORIES (continued) MODEL DESCRIPTION OF ACCESSORY 2083-1 Sensor Probe. 12-foot (3.7 m) cable with CY-7-SD-13sensor in CY mounting adapter, stripped ends. Tempera-ture limit: 325 K (52 °C). Diode sensor epoxied (Stycast)into cen...
Page 47 - DESCRIPTION OF SENSOR
OMEGA Model CYD201/CYD208 User’s Manual Options and Accessories 6-3 6.3 MODEL CYD201/CYD208 SENSORS SENSOR NO. DESCRIPTION OF SENSOR Series DT-420 The smallest silicon diode Temperature Sensoravailable. Installs on flat surfaces. Same siliconchip as Series CY-7 and DT-471. Series DT-450 Silicon Diod...
Page 49 - Appendix A; APPENDIX A
OMEGA Model CYD201/CYD208 User’s Manual Appendix A A-1 APPENDIX A CURVE TABLES A1.0 GENERAL The following curve tables apply to the Model CYD201/CYD208: Curve 0 -DT-500DI-8B (Table A-1), Curve 1 - DT-500DI-8A (Table A-2), Curve 2 -DT-500DRC-D (Table A-3), Curve 3 - DT-500DRC-E1 (Table A-4), Curve 4 ...
Page 57 - NOTES
