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TELEDYNE
HASTINGS
INSTRUMENTS
INSTRUCTION MANUAL
760 PLUS
VACUUM GAUGE
ISO 9001
CER T IFIED
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Manual Print History The print history shown below lists the printing dates of all revisions and addenda created for this manual. The revision level letter increases alphabetically as the manual undergoes subsequent updates. Addenda, which are released between revisions, contain important change information that the user should incorporate immediately into the manual. Addenda are numbered sequentially. When a new revision is created, all addenda associated with the previous revision of the
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Table of Contents 1. GENERAL INFORMATION............................................................................................................................................ 4 1.1. FEATURES .............................................................................................................................................................. 4 1.2. SPECIFICATIONS......................................................................................................................
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1. General Information This manual contains technical and general information relating to the installation, operation, and calibration of the Hastings 760 Plus vacuum gauge which is comprised of a piezo vacuum transducer (760s) and power supply/display. The 760s piezoresistive type transducer has one side of its diaphragm evacuated to a low reference pressure then sealed to produce an absolute pressure signal output. This output signal is linear- proportional to the applied pressure and i
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1.2. Specifications Piezo Vacuum Transducer (760s): Accuracy ......................................................................................................± 0.25% FS* (760 Torr) Operating pressure ............................................................................................. 1000 Torr (nominal) Maximum over pressure..........................................................................................2300 Torr(45 psi) Operating temperature .........................
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2. Installation This section contains the necessary instructions to assist in placing the HPM-760 Plus digital vacuum gauge into operation as quickly and easily as possible. Please read the following thoroughly before attempting to install or use the instrument. 2.1. Receiving Inspection Carefully unpack the Hastings product(s). Inspect for any obvious signs of damage to the shipment. Immediately advise the carrier who delivered the shipment if any damage is suspected. Check each comp
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2.3. Power Supply/Display Installation Cut a panel opening to the following dimensions; 3.62” (92mm) wide, 1.77” (45mm) tall. Insert the power supply/display through the panel cutout and secure in place using mounting hardware supplied. 2.3.1. Power Supply/Display Cables and Wiring Three cables provide all wire connections for the Hastings 760 Plus and are shown below: 760 Plus Interconnect Cable Fig 2-1 To power supply/display To Piezo Transducer (760s) Interconnect cable, 4-cond
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3. Operating Information This section contains information on operating the PIEZO Resistive Transducer in any of its various configurations. Refer to the appropriate section for information on the mode in use. 3.1. General The piezoresistive transducer is shown schematically in figure 3-1. Basically the membrane contains an ion implanted resistive element that is part of a Wheatstone bridge circuit shown in figure 3-2. The underside of the transducer has been evacuated and sealed to prod
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3.2. Piezo Transducer Input Power The 760s piezo transducer operates with a DC input from 15 to 30 volts. Use the 4-pin female connector supplied and makes necessary connections as outlined. See illustration in Section 2 of this manual. 3.3. Piezo Transducer Output Signal The 760s piezo transducer provides either a linear DC voltage output with pressure or a linear DC current output with pressure. The type of output is determined by the instrument option specified. A brief descripti
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3.5.2. Rear Panel Refer to page 19, 7.1.2 for rear view and specific pin outs and connector arrangements. AC Input Connector J1 Universal input power 110vac to 220 VAC. No hardware settings required. J3 Input/Output Connector Sensor Input (pin 9) Input signal from HPM 760S sensor Sensor Ground (pin 10) Input ground Signal output (pin 11) Auxiliary signal output. (0 to +10vdc) Signal output return (pin 12) Auxiliary signal return 24vdc Output (pin 7) 24vdc Auxiliar
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Auxiliary Relay Contacts The THPS-760 Power Supply has SP1 and SP2 relays for various external switching/monitoring applications. Each relay has a single set of Form “C” contacts. (Choice of normally open or normally closed contacts). The relays will energize (pick up) when the input is less than the preset set points as adjusted in the Set Point Adjustment procedures above. The set point LED Indicators (SP1 or SP2) will illuminate indicating that (SP1 or SP2) relay is energized. The ch
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4. Calibration 4.1. Hastings 760 Plus Piezo Transducer Zero and Span Adjustment 1. Install the transducer and power supply/display then apply operating power. Wait a mini mum of 15 minutes before proceeding. 2. Evacuate system to a pressure less than 0.010 Torr (1.00E-02 Torr). 3. Adjust transducer zero trimpot (Fig. 2-1) until the power supply/display indicates 000.0 ±000.1 Torr. 4. Increase system pressure to atmosphere and adjust span trimpot until the power supply/ displa
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5. Maintenance 5.1. Power Supply/Display Authorized Maintenance During normal operation and excluding the calibration procedure, Hastings 760 Plus power supply/display does not require maintenance. In the event a Hastings power supply/display fails or is otherwise damaged, it should be returned to the manufacturer (factory) for repair or replacement after first obtaining the necessary returned material authorization (RMA) number. 5.2. Piezo Transducer Authorized Maintenance During normal
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6. WARRANTY 6.1. Warranty Repair Policy Hastings Instruments warrants this product for a period of one year from the date of shipment to be free from defects in material and workmanship. This warranty does not apply to defects or failures resulting from unauthorized modification, misuse or mishandling of the product. This warranty does not apply to batteries or other expendable parts, or to damage caused by leaking batteries or any similar occurrence. This warranty does not apply to any in
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7. Diagrams and Drawings 7.1. Front Panel The THPS-760 has a 4 1/2-digit display that displays continuous readout. 7.2. Rear Panel Decal is to be black ink printed on silver compucal, with adhesive on the back Manual: 147-082010_HPM-760-Plus-Vacuum-Gauge Page 15 of 16
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7.3. Mounting Cut out panel as shown in the diagram below. 7.4. Panel Mounting 1) Slide power supply into panel from the top. 2) Attach brackets to the side of the power supply. 3) Tighten screws against panel. Manual: 147-082010_HPM-760-Plus-Vacuum-Gauge Page 16 of 16
