Table of Contents
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Table of Contents
Summary of Contents for Solartron Metrology Ametek OD2
- Page 1 OD2 USER LEAFLET...
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Page 2: Safety Summary
SAFETY SUMMARY Safety Characteristics This apparatus has been tested and supplied in a safe condition. This manual contains some information and warnings which must be followed by the user to ensure safe operation and to retain the apparatus in a safe condition. S1.1 Terms in This Manual CAUTION statements identify conditions or practices that could result in damage to the equipment or other property. -
Page 3: Table Of Contents
Section Title Page Safety Summary ..................2 Service Safety Summary ............... 2 List of Contents ..................3 List of Drawings ..................4 List of Tables ..................4 1. GENERAL 1.1 Introduction ..................5 1.2 Specification ..................5 1.3 Safety Considerations ..............5 1.4 Instruments Covered by Manual ............. -
Page 4: List Of Drawings
Section Title Page 6. CALIBRATION 6.1 Calibration with Standard Solartron Transducers ......15 6.1.1 As 4-20mA Transmitter ..............15 6.1.2 As 0-20mA Transmitter ..............15 APPENDIX A - Generation Transducer Connections (LVDT) ..... 16 APPENDIX B - Specification ..............17 LIST OF DRAWINGS Instrument Identification .............. -
Page 5: General
1. GENERAL INTRODUCTION The Model OD2 Transmitter is designed for use with ac inductive type LVDT displacement trans- ducers. It has a dual function: (1) its onboard oscillator derives power from the supply and pro- duces a sine wave carrier to drive the transducer primary winding; (2) its amplifier, demodulator and filter circuit conditions the transducer output and a voltage-to-current converter produces this as a dc milliamp drive. -
Page 6: Installation
If the contents are incomplete, or if there is a mechanical damage or defect, or if the instrument does not pass the operator’s checks, notify the nearest Solartron Metrology office. Keep the shipping materials for carrier’s inspection. -
Page 7: Mounting
MOUNTING The instrument has four (4) 4.2mm (0.165in) diameter mounting holes on 108mm x 50mm (4.25in x 1.97in) centres. These mounting holes are segregated from the electronics by partitioning in the box moulding which may thus be secured to any surface using only two screws without affecting the sealing. -
Page 8: Options
3. OPTIONS INTRODUCTION OD2 Transmitter will operate with most Solartron transducers having strokes up to E100mm (E4in), in particular with the SM, AC, AX, AT and some of the MACH 1’s. Switches on the printed circuit card are used to set up the transmitter for a specific transducer type and onboard Span/ Zero controls are provided for calibration purposes. -
Page 9: Frequency Selection
FREQUENCY SELECTION Switch S1, S2, S3 and S4 select the excitation frequency with reference to Table 3.2. The opti- mum frequency for the transducer in use should be selected (see Table 3.1). Frequency Selection Switch 1, 2, 3 and 4 13kHz 5kHz Table 3.1 - Frequency Selection... -
Page 10: Gain Selection
Zero Gain Switch Span Fig. 3.3 - Gain Selection Switch 8 GAIN SELECTION Switch 8 allows selection of Hi and Lo gain. In the Hi position (normal for gauging transducer) the span pot RV2 will allow a gain adjustment of 5 and has an input range of 0 to 320mV for a 4-20mA output. -
Page 11: Electrical Connections
4. ELECTRICAL CONNECTIONS TERMINAL DESIGNATION Connections should be made to the appropriate terminals detailed in Table 4.1 and 4.2. Refer to Section 2 prior to making any connections. Transducer Connections Terminal Number Designation Excitation (+) Excitation (-) Input (+) Input (-) Table 4.1 - Connector 1 Con 1 Fig. -
Page 12: Non-Standard Connections
NON-STANDARD CONNECTIONS For non-standard transducer connections please contact your nearest Solartron Metrology office. Note: To reverse the transducer output, ie. change for + for inward movement from null to - for inwards movement from null, reverse connections for the green and white wires (AX/AC series) or the black and red wires (MACH 1 series). - Page 13 A 4-20mA Transmitter is suited to current-driven indicators and provides a directly compatible interface with computerised data acquisition and control systems. The Transmitter (Figure 4.3) draws 4mA to operate the electronics while the position of the transducer controls a 0-16mA current sink wired in parallel.
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Page 14: Setting Up
5. SETTING UP GAIN SELECTION The coarse gain should be selected using Table 5.1 RV2 (span) may then be used for fine adjustment. Range Useable (mm) Transducer 4-20mA 0-20mA Low Gain High Gain Low Gain High Gain SM/1 0.7 to 3.6 0.2 to 1.0 0.9 to 4.5 0.3 to 1.3... -
Page 15: Calibration With Standard Solartron Transducers
6. CALIBRATION CALIBRATION WITH STANDARD SOLARTRON TRANSDUCERS 6.1.1 4-20mA Transmitter Move the transducer to the 4mA end of its required travel and adjust the Zero control to give 4mA. If 4mA cannot be obtained, rotate the Span control clockwise until it can. Move the transducer to the 20mA end of its required travel and adjust the Span control to give 20mA. - Page 16 APPENDIX A GENERAL TRANSDUCER CONNECTIONS: AX, AC, MD, SA, SM Series, & MACH 1 Connections to connector 2 should be made as indicated: Yellow wire on LVDT’s: Normally left unconnected and insulated. On some transducers a resistor must be connected from yellow to green or white as instructed on transducer calibration sheet.
- Page 17 APPENDIX B Common Specifications Power Supply Oscillator/Demodulator Power Supply 13 - 42V dc Oscillator frequency 5kHz or 13kHz switchable Oscillator output voltage 0.9V rms Oscillator max. current 16mA Loading Up to 30mA Input sensitivity for rated 30 to 530mV/V output in 2 coarse gain positions Supply Protection Protected internally...
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