GE K400 user manual Installation, Power Supply, Temperature Probes

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2 INSTALLATION

2.1Preparation General

•Remove the instrument from the carrying case and use it on a flat, stable surface. To avoid any possible damage, either to the instrument or the unit under test, the dry well of the instrument must be used in the vertical position.

•The fan system at the base of the instrument must be free from any obstruction.

•The dry well must be completely clean.

•Carefully read the SAFETY section of this manual.

2.2Power Supply

CAUTION:

BEFORE OPERATING, CHECK THAT THE POWER SUPPLY SELECTOR SWITCH SETTING MATCHES THE POWER SUPPLY VOLTAGE.

The DBC series of calibrators operate from an a. c. power supply of 100 to 120 Vac or 220 to 240 Vac, 50-60 Hz.

CAUTIONS:

1THE POWER SUPPLY MUST PROVIDE CONNECTION TO A PROTECTIVE GROUND TERMINAL.

2THE INSTRUMENT MUST, AT ALL TIMES, BE CONNECTED TO THE SUPPLY EARTH (GROUND).

2.3Temperature Probes

WARNING

AFTER USE, THE PROBES WILL BE VERY HOT. HANDLE WITH CARE AND WAIT FOR THE PROBES TO COOL COMPLETELY.

The temperature probe to be tested must be correctly placed in the dry well to produce accurate test results:

•Check the probe diameter and operating range and use reduction inserts with the correct sized holes (the hole diameter should comply with EA-10/13 guidelines). A large temperature difference between probe and dry well causes large measuring errors. This difference increases as the difference between the diameters increases.

•Always clean the probes, before use.

•Do not force the probes into the dry well, insert the probe down to the bottom of the dry well.

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K400 Issue No. 1

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Page 13 Page 15
Contents Druck DBC 150/650 Series General Electric Company. All rights reserved Maintenance SafetyPower isolation Technical AdviceSymbols Traceability and Calibration ReportSafety Instructions AbbreviationsTable of Contents CAL Electrical Input Specification DBC-TC models Standard Accessories DBC-TC series Optional Accessories DBC-TC seriesStandard Accessories DBC-TS series Optional Accessories DBC-TS seriesIntroduction TS Temperature SourceTC Temperature Calibrator Automatic Calibration Parts IdentificationDBC-TS Temperature Probes InstallationPower Supply Important Note Use of screw connections for T/C wires Electrical Connections Connection of a Thermocouple sensorConnection of a 3-wire RTD Connection of a 4-wire RTDOperating procedure GeneralCalibration with external reference probe External probe connections OPERATI0N Numeric keys +/- keyKey Arrow keysWorking screen Menu selection screenSystem Set-up Screen Help/Info screen Self-test screenFunction Modes Reading of the generated temperature Dual display generated temperature and an input test optionExternal reference probe Temperature Reference SelectionInternal reference probe SEL RTD System Set-up Language setting Temperature unit settingDigital interface settings Key-padaudio signalPrinter settings CalibrationProtection code Testing Modes Direct mode 150.00 CStep mode Fixed step selection19.00 C Ramp mode 50.00 CPreset values mode Switch Test Measuring an InputThermocouple Testing 148.00 CSetting Cold Junction Compensation InternalCAL Mode DirectAbsolute SpanReading RTD Measurements Pt-100 Using the keys, select the required method and press ent Reading Current Measurements CAL Voltage Measurements high level CAL Volt Voltage Measurements low level Resistance Measurement DBC Series Serial Commands Protocol Serial CommunicationTS/ TC Read AaOM 1? Preset mode French German Italian Portuguese Spanish Write Par = floating point Calibration of the standard Reference Probe Input CalibrationImportant Note REF RTD Calibration of the millivolt input ranges DBC-TC only Calibration of the Volt input range DBC-TC only Calibration of the mA input range DBC-TC onlyCalibration of the resistance Ohm input ranges DBC-TC only Fault Finding Maintenance Cleaning InstructionsCommon specification Technical SpecificationStandard Specification Electrical Input Specifications DBC-TC models Input Range Resolution Accuracy Days Year

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