• Description:

*The Yokogawa UM330 digital indicator with alarms is a precision alarm                    instrument with universal input 1/8 DIN. For excellent monitoring operability, the UM330 displays process variables on a large display. The UM330 digital  indicator is also provided with four alarm setting points (or setting outputs; one is optional). A retransmission output an 15 Vdc loop power supply are provided  as standard. A communication function or 24Vdc loop power supply is available as an option to the UM330 digital indicator. 

• Signal Computation Function:

   *Measure input computation: Bias addition (-100.0 to 100.0% of measured input         range width), first-order lag filter (time constant off, 1 to 120 s)

  *Contact input: Retains and displays maximum and minimum readings from               measured variable. Resets the maximum and minimum readings

• Alarm Function:

• Six different types of alarms are provided. If an alarm occurs, the alarm lamp indicates it. Four (one is optional) of the six can be used as relay contact outputs.

*Alarm types:

*PV high limit, PV low limit, Deenergized on

*PV high limit, Deenergized on PV low limit

*Fault diagnosis, and FAIL output

       Setting ranges for process variable alarms:

*PV alarms; -100.0 to 100.0% of measured input range

*Alarm hysteresis width; 0.0 to 100.0% of measured input range width

• Display and Operation function:

*PV display:4 digit display for engineering data

*Parameter display: 4-digit digital display for various data, including parameters

*Status display: 4 alarm LEDs (AL1, AL2, AL3, AL4)

*Operation keys: Up and Down keys, increase/decrease setpoints or various            parameters

*SET/ENT key: Sets setpoint data, calls or switches various parameters

*SELECT display: Allows selection and registration of frequently changed                  parameters from the operation parameters during operation

*Security function: An operation inhibiting mode using a password is provided