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PH402G 데이터시트 PDF




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부품번호 PH402G 기능
기능 pH Converter Manual
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PH402G 데이터시트, 핀배열, 회로
Instruction
Manual
Model PH402G
pH Converter
YOKOGAWA
IM 12B6B3-E-E
8th Edition
Free Datasheet http://www.datasheet.in/




PH402G pdf, 반도체, 판매, 대치품
PREFACE
WARNING
Electric discharge
The EXA analyzer contains devices that can be damaged by electrostatic discharge. When servicing this
equipment, please observe proper procedures to prevent such damage. Replacement components should
be shipped in conductive packaging. Repair work should be done at grounded workstations using
grounded soldering irons and wrist straps to avoid electrostatic discharge.
Installation and wiring
The EXA analyzer should only be used with equipment that meets the relevant IEC, American or Canadian
standards. Yokogawa accepts no responsibility for the misuse of this unit.
CAUTION
The Instrument is packed carefully with shock absorbing materials, nevertheless, the instrument may be
damaged or broken if subjected to strong shock, such as if the instrument is dropped. Handle with care.
Although the instrument has a weatherproof construction, the transmitter can be harmed if it becomes
submerged in water or becomes excessively wet.
Do not use an abrasive or solvent in cleaning the instrument.
Notice
Contents of this manual are subject to change without notice. Yokogawa is not responsible for damage to
the instrument, poor performance of the instrument or losses resulting from such, if the problems are
caused by:
G Improper operation by the user.
G Use of the instrument in improper applications
G Use of the instrument in an improper environment or improper utility program
G Repair or modification of the related instrument by an engineer not authorized by Yokogawa.
Warranty and service
Yokogawa products and parts are guaranteed free from defects in workmanship and material under normal
use and service for a period of (typically) 12 months from the date of shipment from the manufacturer.
Individual sales organisations can deviate from the typical warranty period, and the conditions of sale
relating to the original purchase order should be consulted. Damage caused by wear and tear, inadequate
maintenance, corrosion, or by the effects of chemical processes are excluded from this warranty coverage.
In the event of warranty claim, the defective goods should be sent (freight paid) to the service department of
the relevant sales organisation for repair or replacement (at Yokogawa discretion). The following information
must be included in the letter accompanying the returned goods:
G Part number, model code and serial number
G Original purchase order and date
G Length of time in service and a description of the process
G Description of the fault, and the circumstances of failure
G Process/environmental conditions that may be related to the installation failure of the device
G A statement whether warranty or non-warranty service is requested
G Complete shipping and billing instructions for return of material, plus the name and phone number of a
contact person who can be reached for further information.
Returned goods that have been in contact with process fluids must be decontaminated/disinfected before
shipment. Goods should carry a certificate to this effect, for the health and safety of our employees. Material
safety data sheets should also be included for all components of the processes to which the equipment has
been exposed.
IM 12B6B3-E-E
Free Datasheet http://www.datasheet.in/

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PH402G 전자부품, 판매, 대치품
Specification 2-1
2. PH402 SPECIFICATIONS
2-1. General
A. Input specifications
: Dual high impedance inputs
(2 x 1013Ω) with provision for
liquid earth connection.
Suitable for inputs from glass
or enamel pH & reference
sensors and ORP metal
electrodes.
B. Input ranges
- pH
- ORP
- rH
- Temperature
: -2 to 16 pH
: -1500 to 1500 mV
: 0 to 55 rH
: -30 to 140 ºC
(-20 -to 300 ºF)
(for 8k55 sensor -10 to
120 ºC (10 to 250 ºF);
for 10kPTC sensor -20 to
140 ºC (0 to 300 ºF))
C. Span
- pH
- ORP
- rH
- Temperature
: min 1
max 20 pH
: min 100 max 2000 mV
: min 2
max 55 rH
: min 25 ºC max 200 0C
min 50 ºF max 400 0F
(for 8k55 sensor max 100 ºC
(250 ºF))
D. Transmission Signals
: Two isolated outputs of 0/4-
20 mA DC with common
negative.
Maximum load 600 Ω.
Auxiliary output can be
chosen from pH, temperature,
ORP or rH (with suitable
sensor), P.I. control. burn up
(22 mA) or burn down
(0/3.5 mA) to signal failure.
E. Temperature compensation
- Range
: Automatic or manual
compensation to Nernst
equation.
Process compensation by
configurable temperature
coefficient.
Adjustable ITP (Isothermal
point of intersection).
F. Calibration
: Semi-automatic using
preconfigured NIST buffer
tables 4, 7 & 9, or with user
defined buffer tables, with
automatic stability check.
Manual adjustment to grab
sample.
Slope and Asymmetry
Potential setting.
Zero point can be selected for
calibration and display instead
of As. Pot. (IEC746-2)
G. Serial Communication
: Bi-directional according to the
EIA-485 standard using HART
protocol and PC402 software.
H. Logbook
: Software record of important
events and diagnostic data.
Available through RS485, with
key diagnostic information
available in the display.
I. Display
: Custom liquid crystal display,
with a main display of 31/2
digits 12.5 mm high. Message
display of 6 alphanumeric
characters, 7 mm high.
Warning flags and units (pH
and mV) as appropriate.
J. Contact outputs
- General
: Four (4) SPDT relay contacts
with LED indicators. For S1,
S2, and S3, the LED is on
when relay is powered.
NOTE: For S4 (FAIL) LED
lights when power is
removed (Fail safe).
Contact outputs configurable
for hysteresis and delay time.
- Switch capacity : Maximum values 100 VA,
250 VAC, 5 Amps.
Maximum values 50 Watts,
250 VDC, 5 Amps.
- Status
: High/Low process alarms,
selected from pH, ORP, rH
and temperature.
Contact output is also
available to signal “Hold
Active”
- Control function : On / Off
PI pulsed
Proportional duty cycle
control with integral term.
PI frequency Proportional frequency control
with integral term. In addition
wash cleaning control signal on
S3, and FAIL alarm for system
and diagnostic errors on S4
IM 12B6B3-E-E
Free Datasheet http://www.datasheet.in/

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