Oriel 68805 Bedienungsanleitung
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Instra
68805-M
250 Long Beach Boulevard
Stratford, CT 06497-0872
Phone: (203) 377-8282
Fax: (203) 378-2457
E-MAIL [email protected]
50 watt to 200 watt
He, HgXe & Hg
ARC LAMP POWER SUPPLY
MODEL 68805
Please read these instructions completely before operating this equipment. If there are any questions or problems
regarding the use of this equipment, please contact: ORIEL INSTRUMENTS - or - the representative from whom this
equipment was purchased.
L.O.T. - ORIEL S.A. L.O.T. - ORIEL GmbH L.O.T. - ORIEL Ltd.
9 Avenue De Laponie Im Tiefen See 58 1 Mole Business Park
Z.A. De Courtaboeuf D-64293 Darmstadt Leatherhead
91951 Les Ulis Cedex Germany Surrey KT22 7AU
France England
Phone: 1-69-07-20-20 Phone: (06151) 88060 Phone: 01-372-378822
Fax: 1-69-07-23-57 Fax: (06151) 846667 Fax: 01-372-375353
L.O.T. - ORIEL ITALIA FAIRLIGHT BV L.O.T. - ORIEL SUISSE
Viale Dei Mille, 20 Member L.O.T. - Oriel Group Moulin-du-Choc
20129 Milano Marshallweg 45 1122 Romanel-Sur-Morges
Italy 3068 JN Rotterdam Switzerland
Netherlands
Phone: 2-7012-6938 Phone: 010-4206444 Phone: 021-8699033
Fax: 2-7012-6767 Fax: 010-4206511 Fax: 021-8699308
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TABLE OF CONTENTS
I. SAFETY ..................................................................1
II. INTRODUCTION ............................................................2
III. SPECIFICATIONS ...........................................................4
IV. CONTROLS AND CONNECTIONS ..............................................5
V. CIRCUIT DESCRIPTION .....................................................11
VI. CALIBRATION AND TROUBLESHOOTING .......................................14
WARRANTY AND RETURNS
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68805-M
ARC LAMP POWER SUPPLY
1
I. SAFETY
SAFETY NOTES:
- Connections to or from any electrical device must never be made while the device is switched
on.
- The Oriel Model 68805 Power Supply is such a device. It has an open circuit voltage of >160
volts when the start switch is pressed, and could be dangerous if care is not exercised when the
power supply is switched on. Please follow these precautions when operating the power supply:
Make all input and output connections before turning the power supply on.
Do not use the power supply without its cover.
Ensure that the output terminals are properly connected to the lamp housing or
lamp socket before turning on the power supply.
Don't open the power supply or disconnect the output leads while the power
supply is on.
- Follow the lamp or lamp house manufacturer's recommendations and precautions when handling
and using lamps.
- Never touch the lamp's quartz envelope with uncovered fingers; definitely not when operating
the lamp or immediately after shutdown. Also, follow this precaution during lamp installation to
avoid damage to the lamp.
- Do not start the lamp with the output control set above the current rating for the lamp.
- The lamp is a source of constant current. To prevent overpowering of the lamp as it ages,
monitor its current on regular basis.
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68805-M
ARC LAMP POWER SUPPLY
2
II. INTRODUCTION
The Oriel model 68805 arc lamp power supply was designed to meet the needs of the researcher who
demands a highly regulated source of current for proper operation of arc lamp light sources. Constant
current operation of these sources of radiation is required whenever a radiometric measurement is
being made or whenever a highly stable light output is needed.
Arc lamp sources will be operated in constant current mode by the Oriel Model 68805 power supply
with the output voltage being dependent on the arc lamp’s impedance. The Oriel Model 68805 power
supply will provide a constant current of up to 11 amperes with a load voltage range of 0 to 100 volts.
A power limit, which limits the product of output voltage and current to 300 watts, protects the unit
from output overloads. A constant current power supply regulates current even into a short circuit,
andthemodel 68805 is safely limited to
12 amperes or 300 watts
. Also, the inrush current to the lamp
is limited to a maximum of 12 amperes, and the reduced discharge current minimizes electrode
erosion when starting the arc lamp. The Oriel model 68805 Arc Lamp Power Supply includes all of
the circuitry to power the lamps, to operate the required external ignitor or ignitor built into Oriel arc
lamp housing, and to meter the output parameters.
The following Oriel arc lamps may be operated with the model 68805 Arc Lamp Supply:
MODEL DC DC
NO. DESCRIPTION VOLTAGE (V) CURRENT (A)
6251 75 Watt Xe 14 5.4
6263 75 Watt Xe (Ozone free) 14 5.4
6254 150 Watt Xe UV (Ozone free) 20 7.5
6255 150 Watt Xe (Ozone free) 20 7.5
6356 150 Watt Xe 20 7.5
6282 50 Watt Hg 22 2.3
6281 100 Watt Hg 20 5
6283 200 Watt Hg 47-65 3.1-4.2
6291 200 Watt HgXe 20-25 8-9.5
6292 200 Watt HgXe (Ozone free) 20-25 8-9.5
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68805-M
ARC LAMP POWER SUPPLY
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A preset switch allows for setting the output current to the recommended operating value before lamp
start. The power supply also contains circuitry to allow for viewing the output current, the output
voltage, and the output power. There is provision for remote monitoring of these output parameters.
Remotecapability also includes an input that may be used for external control, modulation, or intensity
control.
The 68805 Arc Lamp Power Supply was designed to be a reliable and efficient current source. The
adjustable 0.5 to 11 ampere current output, the large voltage compliance from 0 volts to 100 volts,
andthe 300 watt power limit will allow it to operate all arc lamps that are rated for DC operation in this
voltage, current, and power range. The main power supply section uses offline switching technology
with the resultant increase in power conversion efficiency, weight reduction, and wide input mains
operation.
An interlock function is provided. Unless this interlock is made, the power supply will not operate.
Typical uses for the interlock on Oriel equipment are:
- Microswitches to prevent access to the lamp area (electrical, optical, and other hazards).
- Thermal cutoffs to disable the power supply if the lamp housing overheats.
Please take a few moments and familiarize yourself with the next few sections for they will provide
more details on the features, controls, and the operation of the power supply.
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68805-M
ARC LAMP POWER SUPPLY
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III. SPECIFICATIONS
AC Mains Input: 95–135 VAC @ 8 amperes
135–270 VAC @ 4 amperes
50 or 60 Hertz, 10 ampere inrush
DC Power Output: 300 watts maximum
DC Current Output: Adjustable from 0.5 – 11 amperes
Current limit at 12 amperes
DC Voltage Output:
Preignition > 150 volts unloaded
Operating Load dependent. Total output power
should not exceed 240 watts.
Light Output Ripple:
Resistive Load < 0.25% R.M.S. 40 Hz to 40 kHz
Arc Lamp Load Dependent on lamp, and operating conditions.
Typically < 0.5% R.M.S.
Pre–Adjust Accuracy: 2%
Power Meter Accuracy: 2%
Line Regulation: 0.1% change in output current for a
95–135 VAC mains input or a
190–235 VAC mains input
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POWER
ON
OFF
OUTPUT
PREADJUST
0
AMPERES
WATTS
0
VOLTS
0
WATTS
AMPS
VOLTS
68805 UNIVERSAL POWER SUPPLY
LAMP
START
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Figure 3-1 68805 Front Panel Layout
IV. CONTROLS AND CONNECTIONS
This section will describe the various controls, the available connections, and their function.
Please
become familiar with their uses before operating the power supply with any lamps
. This will reduce
the possibility of damaging the power supply or the lamps through improper operation.
FRONT PANEL
Figure 3–1 shows the layout for the front panel.
METER AND VOLTAGE, WATTS, AND AMPS SWITCH
The analog meter is scaled to display the output voltage, current, and wattage.
Keep in mind that
the meter monitors the output voltage of the supply not the load, and that the output power is
always displayed by the meter. The one exception is when the preadjust switch is pressed and
operating current is displayed.
The select switch enables you to momentarily view the output
voltage or current by pressing it left or right, respectively.
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68805-M
ARC LAMP POWER SUPPLY
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OUTPUT AND CURRENT PREADJUST SWITCH
Aten turn potentiometer is used to provide a precise means of output current adjustment. A shaft
lock is mounted with this knob to lock in a setting if a readjustment from a previous current setting
is notdesired. When the preadjust switch is pressed the meter will display the value of the output
current that will be delivered to the lamp after lamp start.
POWER SWITCH
This is the AC mains power switch. In the “ON” position ac power will be switched into the main
circuitry of the power supply, and an integral indicator lamp will glow to indicate that the power
supply is on. The power switch is also a circuit breaker which will open both of the ac lines to the
internal circuitry in case of a fault within the unit.
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INTERLOCK
REMOTE
A C
J304
J302
J306
S301
J301
J307
J305
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Figure 3-2 68805 Rear Panel Layout
REAR PANEL
Figure 3–2 shows the rear panel layout and connections.
AC MAINS INPUT (J304)
J304 is an IEC style socket which will accept power cords for worldwide use of the power supply.
The AC mains cord is connected here.
LINE VOLTAGE SELECTOR (S301)
S301 sets the input voltage range for a nominal 110 VAC or 220 VAC. It is factory preset for
your area, but should be checked before using the power supply.
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