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PH450

Yokogawa PH450 pH analyzer is a 4 wire multivariable analyzer combines pH with temperature and ORP measurement with advanced temperature compensation.
Brand: Yokogawa
Place of origin: Singapore
Delivery: 6 to 8 weeks

PH450 GS

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1.General Introduction

Yokogawa PH450 pH analyzer is a 4 wire multivariable analyzer combines pH with temperature and ORP measurement with advanced temperature compensation, and all these measurements can be utilized through the different output functions: two mA current outputs, four independent SPDT contact outputs and HART®. Both DD and DTM files are available for direct connection to HART® Handheld terminal, HMI monitor and Pact ware PC configuration.

2.General Specifications

Items	Description
Measuring principle	Electrochemical
Input ranges	pH: -2 to 16 pH ORP: -1500 to 1500 mV rH: 0 to 100rH Temperature: -30 to 140 deg C (Pt1000)
Transmission signals	General: Two isolated outputs of 4 to 20mA DC with common negative. Maximum load 600 Ω. Bi-directional HART® digital communication, superimposed on mA1 (4 to 20mA) signal. Output function: Linear or Non-linear (21-step table) output for pH, temperature, ORP or rH. Control function: PID control. Burn out function: Burn up (21.0mA) or burn down (3.6mA) to signal failure accorded with NAMUR NE43. Hold: The mA-outputs are frozen to the last/fixed value during calibration/commissioning.
Contact outputs	General: Four SPDT relay contacts with display indicators. Switch capacity: Maximum values 100 VA, 250 V AC, 5 A; Maximum values 50 W, 250 V DC, 5 A Status: High/Low process alarms, selected from pH, ORP, rH and temperature. Configurable delay time and hysteresis. Failure annunciation. Control function: On/Off, PID duty cycle or pulsed frequency control. Wash: Contact can be used to start manual- or interval time wash cycles. Hold: Contact can be used to signal the Hold situation. Fail: Contact S4 is programmed as fail-safe contact.
Contact input	Remote wash cycle start.
Temperature compensation Function	Automatic or manual. Compensation to Nernst equation. Process compensation by configurable temperature coefficient, NEN6411 for water or strong acids/bases or programmable matrix.
Calibration	Semi-automatic 1 or 2 point calibration using pre-configured NIST, US, DIN buffer tables 4, 7 & 9, or with user defined buffer tables, with automatic stability check. Manual adjustment to grab sample.
Display	Graphical Quarter VGA (320 x 240 pixels) LCD with LED backlight and touch screen.
Housing	Cast Aluminum housing with chemically resistant coating; Polycarbonate cover with Polycarbonate flexible window, Protection IP66/NEMA 4X/CSA Type 3S
Power supply	PH450G-A: Ratings; 100 to 240 V AC, Acceptable range; 90 to 264 V AC Ratings; 50/60 Hz, Acceptable range; 50 Hz ±5%, 60 Hz ±5 % Power Consumption; 15 VA PH450G-D: Ratings; 12 to 24 V DC, Acceptable range; 10.8 to 26.4 V DC Power Consumption; 10 W
Environment and operational conditions	Ambient temperature: -20 to 55℃ (-5 to 130℉) Storage temperature: -30 to 70℃ (-20 to 160℉) Humidity: 10 to 90 % RH at 40℃ (100℉) (non-condensing)

3. Model Selection

Main Code	Suffix Codes			Description
PH450G				pH / ORP Converter
Power Supply	-A			AC version (100…240 VAC)
Power Supply	-D			DC version (12…24 VDC)
Type		-A		General purpose version
Type		-U		FM version
Options			/UM	Universal mounting kit(panel, pipe, wall)
			/U	Pipe and wall mounting hardware
			/PM	Panel mounting hardware
			/H5	Awning hood (stainless steel)
			/AFTG	G1/2
			/ANSI	1/2NPT
			/AM20	M20
			/SCT	Stainless steel tag plate

4.External Dimensions

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PH450

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