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MODEL HCM-300
CAPACITANCE
MANOMETER
POWER SUPPLY
Contains Operating and Programming Information
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MODEL HCM-300 CAPACITANCE MANOMETER POWER SUPPLY ã 1996, Teledyne Brown Engineering, Hastings Instruments Division All rights reserved. Hampton, Virginia, U.S.A. First Printing November, 1996 Document Number: 145-0197 Rev. B
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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 subse- quent 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 man
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Table of Contents 1 General Information ................................................................ 1-2 Introduction .............................................................................................. 1-2 Specifications............................................................................................. 1-2 Ordering Information ............................................................................... 1-2 2 Installation ...............................................
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SECTION 1 General Information
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1-2 General Information Introduction The Hastings Capacitance Manometer Power Supply (HCM-300) supplies stable ±15 VDC specifically for operating the Hastings Capacitance Manometer Trans- ducer. The transducer returns a signal to the HCM-300 which displays an accurate pressure reading. Specifications Output Voltage .........................................................................................±15 VDC ± 2.5 % Power Input.........................................................
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SECTION 2 Installation
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2-2 Installation Receiving Inspection Carefully unpack the HCM-300. Inspect all items received at this time for any obvious damage that may have occurred during shipment. Immediately advise the shipping agent if there is any damage to items in your shipment. Identify each item and the quantity received with those listed on the packing list. Mounting Cut out panel as shown in the diagram below.
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Installation 2-3 To panel mount the HCM-300: 1) Slide power supply into panel from the front. 2) Attach brackets to the side of the power supply. 3) Tighten screws against panel. See Figure below:
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2-4 Installation Hastings Capacitance Manometer Power Supply Cable Connections The HCM-300 is supplied with a power cable. The 3-wire cable plugs into the back of the instrument in the socket marked AC Power. A 5-wire cable connects the instrument to the transducer. The diagram below shows the proper connections. AC POWER ANALOG OUT VAC VDC VDC
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SECTION 3 Operating Information
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3-2 Operating Information Normal Start-up 1) Connect the interface cable from the HCM-300 to the transducer. (See figure on page 2-4 of this manual) 2) Verify that the AC power to be applied to the HCM-300 is correct (115 VAC). 3) Apply AC power to the HCM-300. 4) The HCM transducer has a local zero adjustment. Follow the zero adjustment procedure described in the HCM-6000 series manual. Caution Before applying power to the instrument, ensure that the line voltage being applied is corre
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Operating Information 3-3 Conversely, if the analog output voltage is measured, then the pressure reading is given by: (4) Internal Adjustments The internal adjustments are factory set and should never need to be changed. However, if the need arises and suitable standards are available the following adjustments can be made. (see figure on page 3-4) Full Scale The full scale potentiometer changes the display by changing the sensitivity of the instrument. Apply a calibrated +10 VDC signa
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3-4 Operating Information Display Configuration The jumper position on the power supply circuit board determines the location of the decimal on the display.The jumper is factory set to match the configuration specified by the customer. Should the need arise to change the display configura- tion, this jumper can be easily moved (see figure below). configuration jumpers Jumper Location Display Configuration 1 1000.0 Torr 4 not used 3 10.000 Torr 2 100.00 Torr
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SECTION 4 Warranty and Repair
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4-2 Maintainance and Repair Warranty Repair Hastings Instruments will repair or replace, at their option, any product covered under the warranty expressed in the front of this manual, that is returned transpor- tation prepaid to their plant in Hampton, Virginia. All products returned must be accompanied by a Return Materials Authorization (RMA) form or a written description of the problem with the instrument. Please consult the factory for your RMA number before returning any product fo
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Maintainance and Repair 4-3
