SC450G Conductivity/Resistivity Converter

Brand: Yokogawa Electric Corporation

The EXAxt 450 series is designed to combine the superior functionality of the Yokogawa EXA series with the ease of use offered in pocket computers (PDA). 

Truly unique is the EXAxt 450 series in the Human Machine Interface. 

The high resolution graphical display and the touch screen operation make all information visible to the operator. 

Configuration with the touch screen is as easy as operating a PDA. 

Simply choose the language of choice and on screen instructions assure that the best configuration for the application is obtained. 

The EXAxt 450 offers full functionality with PID control on either mA output(s) or on contact output(s). 

The contact outputs can be selected as pulse frequency controlled or pulse length controlled contact function to control chemical metering pumps or solenoid valves.

Specifications

Accuracy

  • ≤ 0.3° C (0.54° F) [≤ 0.4° C (0.72° F) for Pt100]
  • ≤ 0.5 % of Reading - Conductivity/Resistivity
  • ≤ 4 seconds for 90 %

Alarm

  • High/Low Process Alarms

Ambient Temperature Range

  • -20° to 55° C (-5° to 130° F)

Approvals & Certifications

  • CSA C22.2 No.61010-1
  • EMC: EN 61326-1 Class A, EN 61326-2-3, EN 61000-3-2 Class A, EN 61000-3-3
  • FM Non-Incendive Approval: FM3611 Class I, Div. 2, Groups A, B, C, D
  • KC
  • NAMUR NE43
  • RCM: EN 61326-1 Class A

Burn-Out

  • Burn Down 3.6 mA
  • Burn Up 21 mA

Cable Length

  • 200 feet (60 metres)

Calibration

  • Semi-Automatic Calibration

Communication

  • HART

Conduit Connection

  • 1/2” NPT Female
  • G 1/2” Female
  • M20 Female

Consumption

  • 10 W - Power Consumption
  • 15 VA - Power Consumption

Control Functions Characteristics

  • ON/OFF
  • PID Control

Display

  • Graphical Quarter VGA (320 x 240)
  • LCD with LED Backlight

Electrical Rating

  • Maximum

Enclosure Finish

  • Silver Gray

Enclosure, Body Material

  • Cast Aluminim
  • Polycarbonate

Environmental Protection

  • IP66
  • NEMA 3S
  • NEMA 4X

Frequency

  • 50 Hz ± 5 % - Acceptable Range
  • 50/60 Hz - Ratings
  • 60 Hz ± 5 % - Acceptable Range

Function

  • Linear
  • Non-Linear

Humidity

  • 0 to 90 % Non-Condensing

Input

  • 0 µS/cm to 2,000 ms/cm - Conductivity
  • 1 µS/cm Min. (Underrange 0.00 µS x C)
  • 200 ms/cm, Max.

Input Impedance

  • 100 kiloohms - Contact Open
  • 0 to 1,000 megaohms - Resistivity
  • 1 Megaohm/cm, Max.
  • 5 ohms/cm Min.

Load Impedance

  • 600 ohms - Max.

Materials of Construction

  • Stainless Steel - Tag Plate

Mounting

  • Field Mounting
  • Panel Mounting
  • Pipe Mount
  • Universal Mounting
  • Wall Mounted

Output

  • Four SPDT Relay Contacts with Display Indicators

PID Configuration

  • PID Duty Cycle

Power

  • 100-240 Vac - Ratings
  • 90-264 Vac - Acceptable Range

Response Time

  • ≤ 4 seconds for 90 % - Step Response

Sensor, Probe Type

  • Ni100
  • NTC 8k55
  • PB36
  • Pt100
  • Pt1000

Storage Temperature

  • -30° to 70° C (-22° to 158° F)

Supply Voltage

  • 10.8-26.4 Vdc - Acceptable Range
  • 12-24 Vdc - Ratings

Temperature Coefficient

  • 0 to 3.5 %/°C (°F)

Temperature Range

  • -20° to 250° C (-4° to 482° F)

Tolerance

  • Output Tolerance: ± 0.02 mA
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