Omega Engineering RD8900 user manual Scale, Event

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Log Speed: The logging speed (recording speed) of measured data, select Log Speed column, then choose 1, 2, 5, 10, 30, 60 or 120 seconds.

Offset: It is offset value to correct the sensor error.

Gain: It is a multiplier to correct the sensor error.

The correct value = ( the process value + offset ) x gain

Input: Displays automatically the setup input of V, mV, mA, T/C ( J, K, T, E, B, R, S, N, L ), PT100, JPT100

Unit: The engineering unit of input.

Range: Various input ranges can be set for voltage and current. Normally, it sets 0-1, 1-5, 0-5 or 0-10 V for the voltage, and set 0-20 or 4-20mA for the current.

Scale:

Scale Unit: Defines the scale unit.

Scale Low: Defines the low scale with decimal if necessary. For instance, input 0-10 V, the Scale Low can be set up with value 0.00 to be correspondent to low range 0 V.

Scale Hi: Defines the high scale with decimal if necessary. For instance input 0-10 V, the Scale Hi can be set up with value 100.00 to be correspondent to high range 10 V.

Event

The Event is frequently used for Alarm purpose. Event can also be used for digital output DO, Timer, Totalizer, Counter or Report.

Type: There are various types of H, L, HH, LL, R or r to be selected for job or Alarm purpose.

H:High limit. When the process is over high limit, the alarm or job is actuated.

L:Low limit. Any the process is lower than low limit, the alarm or job is actuated

HH:High high limit, to set up another limit higher than high limit for double warning.

LL:Low low limit, to set up another limit lower than low limit for double warning.

R:Increasing rate of change. The job or alarm is actuated when the rate of increasing process value is greater than the specified rate time interval. For example, when the Setpoint is set to 100_1S, if the process is increasing greater than the value 100 in 1 second, then job or alarm will be actuated.

r:Decreasing rate of change. The job or alarm is actuated when the rate of decreasing process value is greater than the specified rate time interval. For example, when the Setpoint is set to 50_2S if the process is decreasing greater than the value 50 in 2 seconds, then job or alarm is actuated.

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Contents Paperless Recorder RD8900 Safety ContentsSystem Info Protective Earth DC Supply Safety Notes and Precautions SafetySafety Symbols Static Electricity To replace the power-line fuseCommunication Unique features of recorderGeneral Description Expandable Input and Output CardsInfrared Detector IR Detector Storage Media CF CardData Security Ordering codes and accessories Ordering codes RD8900 耟- 耟- 耟 Description AccessoriesMemory SpecificationsPower DisplayStandard Ethernet Communication Digital Input Card DI181Comm Module CM181 Approval Standards Infrared DetectorEnvironmental & Physical Panel mounting style Installation and wiringInstallation UnpackingPage Bench top / Portable style Page Page Page Figure耟2 Analog input card part numbers AI181, AI182, AI183 Setup input, output & 24VDC power supply cardsVDC auxiliary power supply card AP181 Wiring for the cards Figure耟2 Digital output card DO181 Figure耟2 VDC auxiliary power supply card AP181 RS-232, RS-422, RS-485 wiring Installation of Compact Flash CF card Soft keys Basic OperationHistory ModeEvent Event/AlarmReport StatusExit Shutdown DumpClear OperatePage Configuration Channel Event ScalePage Display Page Timer Tools Timer, Counter & TotalizerCounter Totalizer Totalizer Timer1Timer2 StorageMedia InstrumentInstrument Ethernet CommunicationRS-232, RS-485 Clock System Info Demo Configuration examplePC Software manual Help Set upPC software Observer I Hardware requirementsPage How to use PC software Page Expressions on recorder Mathematics Functions MathematicsMath Expressions and an example An example of Math Omega Engineering, INC