Yokogawa pH and Redox Converter, PH450G
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PH450G pH & Redox Converter

Brand: Yokogawa Electric Corporation
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The PH450 pH analyzer provides the best accuracy in the industry, featuring an advanced temperature compensation functionality, preloaded calibration standards, stability checks, and online sensor and analyzer diagnostics to provide verifiable results.

This four-wire, multivariable analyzer combines pH with temperature and ORP (Redox) measurement, all of which can be utilized through the different output functions: two mA current outputs, four independent SPDT contact outputs, and HART. 

Dynamic sensor checking and wash cycle functions assure trouble free and accurate analysis with minimum maintenance.
Features
  • Capable of analyzing pH, ORP or rH and Temperature measurements at the same time with the same sensor
  • Full PID control possible for both acid and alkaline addition simultaneously
  • Dual High Impedance Capability, allowing for Differential pH/ORP measurements 
  • Enhanced diagnostics, process trending graphics and on-screen logbooks for data storage
  • Two mA-outputs and four SPDT relay contacts with display indicators
  • Hart® Communications
  • FM Class 1, Div.2, Group ABCD, T6 for Ta-20 to 55°C
  • IP66/NEMA4X 1/2 DIN enclosure for Field Mounting and Panel Mounting
  • Three sets of preloaded pH buffer standards (NIST, US and DIN) cover most commonly used pH calibration practices
  • Supports many temperature compensation elements and sensor types

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Specifications

Brand

Accuracy

  • ≤ 0.01 pH - pH Input
  • ≤ 0.3° C (0.54° F) [≤ 0.4° C (≤ 0.72° F) for Pt100] - Temperature
  • ≤ 1 mV - ORP Input
  • Step Response: < 4 seconds for 90 % (pH7 - pH4)

Ambient Temperature Range

  • -20° to 55° C (-5° to 130° F)

Approvals & Certifications

  • Safety: EN 61010-2-030
  • Safety: EN 61010-2-201

Approvals & Certifications

  • CSA C22.2 No.61010-1
  • EMC: EN 61326-1 Class A, Table 2, 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, T6 for Ta -20 to 55° C
  • IEC
  • KC
  • RCM: EN 61326-1 Class A
  • UL 61010-1

Burn-Out

  • Downscale: 3.6 mA to Signal Failure According NAMUR NE43
  • Upscale: 21 mA to Signal Failure According NAMUR NE43

Communication

  • HART

Conduit Connection

  • 1/2” NPT Female - Conduit Adapter
  • G 1/2” Female - Conduit Adapter
  • M20 Female - Conduit Adapter

Consumption

  • 10 W - Power Consumption (PH450 G-D)
  • 15 VA - Power Consumption (PH450 G-A)

Control Functions Characteristics

  • PID Control

Cover Material

  • Polycarbonate

Display

  • Backlight: LED
  • LCD Display

Electrical Rating

  • Maximum

Enclosure Finish

  • Chemically Resistant Coating
  • Silver Gray

Enclosure, Body Material

  • Cast Aluminum

Environmental Protection

  • IP66
  • NEMA 3S
  • NEMA 4X

Function

  • Automatic
  • Manual

Humidity

  • 10 to 90 % Relative Humidity at 40° C (100° F), Non-Condensing

Input

  • 0 to 100 RH
  • -1,500 to 1,500 mV - ORP
  • -2 to 16 pH
  • PTC/NTC Thermistor

Input Impedance

  • Dual High Input Impedance: ≥ 10¹² ohms

Input Signal

  • 4-20 mA DC

Load Resistance

  • 600 ohms

Materials of Construction

  • Stainless Steel - Tag Plate

Mounting

  • Panel Mounting
  • Pipe Mounting
  • Wall Mounting

NACE & NIST

  • NIST

Output

  • 4 SPDT Relays
  • 4-20 mA DC

Output Function

  • Linear or Non-Linear Ouput

Power Supply

  • 10.8-26.4 Vdc - Acceptable Range (PH450 G-D)
  • 100-240 Vac - Ratings (PH450 G-A)
  • 12-24 Vdc - Ratings (PH450 G-D)
  • 90-264 Vac, 50 Hz ± 5 %, 60 Hz ± 5 % - Acceptable Range (PH450 G-A)

RTD Type

  • Pt100
  • Pt1000

Storage Temperature

  • -30° to 70° C (-22° to 158° F)

Switch Type

  • SPDT

Temperature Range

  • -10° to 120° C (14° to 248° F) - NTC 8k55
  • -30° to 140° C (-22° to 284° F) - Pt1000, Pt100, 350 ohms (DKK), 5k1, 6k8, PTC10k, 3kBalco

Tolerance

  • ± 0.02 mA of 4-20 mA - mA Output Tolerance

Window Material

  • Polycarbonate

Documentation

Data Sheets

Product Manuals

Certificate

MSDS/SDS

Product Drawing

Technical Information

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