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6 UDA2182 Universal Dual Analyzer Product Manual January 2009
UDA2182 Universal Dual Analyzer
Control Loop/Outputs Control Loops: 2 standard (one for each PV); current, pulse frequency, or time proportional
Control Loop Types: PID (optional), Duplex (optional), On/Off (standard)
Auto-tuning: Accutune II, fuzzy logic overshoot suppression, applicable to both PID loops
Standard Alarm/ Control
Relays
Two SPDT (Form “C”) Relays
Resistive Load Rating: 4A, 120/240 Vac
Optional Additional
Alarm/Control Relays
Two SPDT (Form “C”) Relays
Resistive Load Rating: 4A, 120/240 Vac
Alarm/Control Settings Alarm/on-off control delay: 0-100 seconds.
Alarm/on-off control deadbands: individually set, from 1 count to full scale for pH, ORP, and
temperature.
On/off cycle period: 0 to 1000 seconds.
On/off percent “on” time: 0 to 100%, 1% resolution.
Set point and proportional band limit ranges: ±19.99 pH, ±1999 mV, -10 to 130°C, 1 count resolution.
DAT cycle period: 1 to 1999 seconds.
PFT maximum frequency: 1 to 200 pulses/minute.
PFT pulse width: 50 ms, compatible with electronic pulse-type metering pumps.
Remote Preamplifier Input
Option
Optional input card to accept input signal from Honeywell digital preamplifiers:
Meridian II – 31075707 and 31022283
Durafet – 31079288 and Cap Adapter cables
pH Temperature
Compensation
Conventional compensation for changing electrode output (Nernst response), plus selectable solution
temperature compensation for high-purity water.
Calculated pH from
Differential Conductivity
User selectable when unit has two Conductivity inputs. Used when ammonia or amine is the water
treatment chemical.
Auto Buffer Recognition
(pH)
User Selectable
Available Buffer Series: NIST/USP, US, and Euro
Conductivity
Compensations
NaCl, HCl, H
2
SO
4
, PO
4
, NaOH, NH
3
, C
4
H
9
C, Pure Water, Custom (User Selectable)
Dissolved Oxygen
Measurement
Max flowrate (probe): 950 ml/min with flow chamber; no dependence on stirring or flowrate
Atmospheric pressure: 500-800 mm Hg with internal sensor, for calibration
Calibration with either Air or Sample
Auto Clean/ Auto Cal
Function
Real time clock is used to set-up cycles to initiate a cleaning and calibration sequence. Cycle Set-up is
user configurable.
Event History Screen Event history screen stores 256 events with a description of the event and a Date/time stamp.
Calibration History Screen Calibration history screen stores information on 128 calibration events with a date/time stamp.
Power Requirements 90 -264 Vac, 47-63 Hz, 15 VA. Memory retained by E
2
PROM when power is off.
Wireless Interface
Type: Infrared (IR)
Length of Link: 0 –1 M, 0 –15° Offset
Baud Rate: 9600
Data Format: Modbus Protocol
RS422/RS485 Modbus
RTU Slave
Communications Interface
(Optional)
Baud Rate: 2400, 4800, 9600, 19200, 38400, 57600, or 115200 selectable
Data Format:: IEEE floating point and 32-bit integer. Word swap configurable.
Length of Link:
2000 ft (600 m) max. with Belden 9271 Twinax Cable and 120 ohm termination resistors
4000 ft (1200 m) max. with Belden 8227 Twinax Cable and 100 ohm termination resistors
Link Characteristics: Two-wire (half-duplex), multi-drop Modbus RTU protocol, 15 drops maximum or
up to 31 drops for shorter link length.
Modbus RTU slave: Provides monitoring of inputs outputs, statuses, alarms, and variables. Provides
writing of variables for remotely modifying parameter settings.