Teledyne Marine Instruments 2002 User Manual Page 1

INSTRUCTION MANUAL MODEL 2002 VACUUM GAUGE TELEDYNE HASTINGS INSTRUMENTS ISO 9001CERTIFIED

149-072011 Model 2002 Vacuum Gauge Page 10 of 38 This will not correct the calibration if the tube has become contaminated or damaged. This reset wi

149-072011 Model 2002 Vacuum Gauge Page 11 of 38 An important point to be noted is the fact that after the adjustment, the new calibration coeffici

149-072011 Model 2002 Vacuum Gauge Page 12 of 38 3. Place the instrument in the CAL mode, then simultaneously press the UP and DOWN switches to byp

149-072011 Model 2002 Vacuum Gauge Page 13 of 38 light will now flash. Use the UP and DOWN switches to individually select the desired code.

149-072011 Model 2002 Vacuum Gauge Page 14 of 38 4. Rear Panel Description A schematic of the rear panel of the Model 2002 control unit is shown in

149-072011 Model 2002 Vacuum Gauge Page 15 of 38 If the analog output voltage is being used in a data acquisition system, the following formulas ca

149-072011 Model 2002 Vacuum Gauge Page 16 of 38 4.3. TTL Outputs TTL outputs are provided for process control. High and Low set points are enter

Analog 0-10V OPTION BOARD CONNECTOR Pin# Connection 1 Analog Out 1 (1024 Torr) High 2 Analog Out 1 (1024 Torr) Shield 3 Analog Out 1 (1024 Torr) Lo

5. Theory of Operation The Model 2002 transducer is comprised of two very different sensors which provide a span of measurement extending from 1000 To

149-072011 Model 2002 Vacuum Gauge Page 19 of 38 To insure temperature invariance, Therefore This requires for any change in sensitivity to be

149-072011 Model 2002 Vacuum Gauge Page 2 of 38 Manual Print History The print history shown below lists the printing dates of all revisions and add

149-072011 Model 2002 Vacuum Gauge Page 20 of 38 5.2. Pirani Sensor Figure 5.3a shows a thin film Pt resistive element on a one micron thick Si3N4

149-072011 Model 2002 Vacuum Gauge Page 21 of 38 Since the first two losses are essentially constant at high vacuum for a given sensor, we can measu

149-072011 Model 2002 Vacuum Gauge Page 22 of 38 Ta = ambient temperature P = pressure Ag = surface area of the heated portion of the mem

149-072011 Model 2002 Vacuum Gauge Page 23 of 38 6. Communications Option Board Both RS-232 and RS-485 communication interface boards are available

149-072011 Model 2002 Vacuum Gauge Page 24 of 38 6.1.1. Interface Connector Pin Assignments for RS-485 (Full duplex-4 wire)(Jumper position 2-3).

149-072011 Model 2002 Vacuum Gauge Page 25 of 38 When a lower case character is present in an example it represents an option. Character Descriptio

149-072011 Model 2002 Vacuum Gauge Page 26 of 38 Notes: The setpoints may also be entered as a decimal number, e.g. [H=760.99<CR>] will be s

149-072011 Model 2002 Vacuum Gauge Page 27 of 38 Reset / Restore Commands Command Description Format Notes: Escape <Esc>...

149-072011 Model 2002 Vacuum Gauge Page 28 of 38 7. Relay Interface Option Board The relay interface board is available as an option for the Model

149-072011 Model 2002 Vacuum Gauge Page 29 of 38 8. 4-20 mA Interface Option Board The Relay option board in the Model 2002 operates off of the set

149-072011 Model 2002 Vacuum Gauge Page 3 of 38 Table of Contents 1. GENERAL INFORMATION...

149-072011 Model 2002 Vacuum Gauge Page 30 of 38 8.2. Operation The 4-20 mA output option board provides dual channel current output linearly propo

149-072011 Model 2002 Vacuum Gauge Page 31 of 38 9. 0-10V Interface Option Board The 0-10 V interface board is available as an option for the Mode

149-072011 Model 2002 Vacuum Gauge Page 32 of 38 The 0-10V output option board, provides voltage outputs proportional to the HPM-2002 pressure readi

149-072011 Model 2002 Vacuum Gauge Page 33 of 38 10. Troubleshooting Guide Symptom: Power on - No display activity. Action: 1. Check for proper A

149-072011 Model 2002 Vacuum Gauge Page 34 of 38 11. WARRANTY 11.1. Warranty Repair Policy Hastings Instruments warrants this product for a period

149-072011 Model 2002 Vacuum Gauge Page 35 of 38 12. Diagrams and Drawings

149-072011 Model 2002 Vacuum Gauge Page 36 of 38

149-072011 Model 2002 Vacuum Gauge Page 37 of 38 Model 2002 Outline Dimensions

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149-072011 Model 2002 Vacuum Gauge Page 4 of 38 1. General Information The Model 2002 is a wide range vacuum measuring instrument consisting of a di

149-072011 Model 2002 Vacuum Gauge Page 5 of 38 board is also available. The Model 2002 instrument accepts an external TTL level "Remote Zero

149-072011 Model 2002 Vacuum Gauge Page 6 of 38 2. Installation This section is designed to assist in getting a new pressure gauge into operation as

149-072011 Model 2002 Vacuum Gauge Page 7 of 38 2.4. Control Unit Installation • Environment: • Indoor use • Altitude up to 2000 meters • Opera

149-072011 Model 2002 Vacuum Gauge Page 8 of 38 3. Front Panel Operation 3.1. Overall Functional Description The front panel of the control unit i

149-072011 Model 2002 Vacuum Gauge Page 9 of 38 Scientific Notation The Model 2002 measures pressure that spans more than seven decades. In order t