GE K400 user manual Ref Rtd

Page 59

Using a decade resistance box, generate the required value (to the Ref. Probe connection on the electrical panel) and press ent. The microprocessor combines the two values automatically. The nominal value is the value recommended for the test.

REF. RTD INPUT

Nominal value:

300Ω

True value:	300.00
Reading:	298.50

Press ENT or CE ...

•Calibration of the external Reference Probe (DBC-TS and DBC-TC)

By selecting the REF RTD from the calibration menu and pressing ent, a new display opens to set all the parameters needed for the connected Reference RTD (Tag number, R0 values, coefficients).

REF RTD

Tag:

R0:100.00Ω

A:3.9080e-03

B:-5.8020e-07

C:-4.1830e-12

Move the cursor with the keys and set the value with the numeric key-pad. In this way, a characterisation of the specific Reference Probe can be made. Press ent to return to the calibration menu.

•Calibration of the internal dry well Sensor (DBC-TS and DBC-TC)

Note: Starting this procedure after at least 1 hour of warm-up, achieves a better accuracy.

CALIBRATION
SET 1:	50.00
REF 1:	50.00
SET 2:	300.00
REF 2:	300.00
SET 3:	400.00

K400 Issue No. 1

49

Image 59

Contents Druck DBC 150/650 Series General Electric Company. All rights reserved Technical Advice SafetyPower isolation MaintenanceTraceability and Calibration Report SymbolsAbbreviations Safety InstructionsTable of Contents CAL Electrical Input Specification DBC-TC models Optional Accessories DBC-TC series Standard Accessories DBC-TC seriesOptional Accessories DBC-TS series Standard Accessories DBC-TS seriesIntroduction TS Temperature SourceTC Temperature Calibrator Parts Identification Automatic CalibrationDBC-TS Temperature Probes InstallationPower Supply Important Note Electrical Connections Connection of a Thermocouple sensor Use of screw connections for T/C wiresConnection of a 4-wire RTD Connection of a 3-wire RTDGeneral Operating procedureCalibration with external reference probe External probe connections OPERATI0N Arrow keys +/- keyKey Numeric keysWorking screen Menu selection screenSystem Set-up Screen Self-test screen Help/Info screenDual display generated temperature and an input test option Function Modes Reading of the generated temperatureExternal reference probe Temperature Reference SelectionInternal reference probe SEL RTD Temperature unit setting System Set-up Language settingKey-padaudio signal Digital interface settingsCalibration Printer settingsProtection code 150.00 C Testing Modes Direct modeFixed step selection Step mode19.00 C 50.00 C Ramp modePreset values mode Measuring an Input Switch Test148.00 C Thermocouple TestingInternal Setting Cold Junction CompensationDirect CAL ModeSpan AbsoluteReading 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 Serial Communication DBC Series Serial Commands ProtocolTS/ 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 mA input range DBC-TC only Calibration of the Volt input range DBC-TC onlyCalibration of the resistance Ohm input ranges DBC-TC only Fault Finding Cleaning Instructions MaintenanceCommon specification Technical SpecificationStandard Specification Input Range Resolution Accuracy Days Year Electrical Input Specifications DBC-TC models