Scope of Work
The instrument shall be a line-powered analyzer for measuring pH,
ORP, Conductivity, Chlorine, Dissolved and Gaseous Oxygen,
Dissolved Ozone, Temperature, Turbidity, Flow, or 4-20mA current
input. The device shall include two isolated inputs, seven local languages, two 4-20mA current outputs, removable connectors for power
and current outputs, four solid plugs for closure of openings, and
panel mount hardware. Accessories and services shall be available
from the manufacturer of the device to support this instrument and its
installation.
The analyzer shall be manufactured by Rosemount Analytical Inc.,
2400 Barranca Parkway, Irvine, CA 92606-5018 USA (800) 854-8257
www. http://www.raihome.com, or as approved equal.
General
The analyzer shall be microprocessor-based and accept all
Rosemount Analytical sensors.
Power and Alarms:
20-30VDC and auto-switching 85-265VAC power supplies shall be
available. These power supplies shall each include four high load 5
amp. alarm relays which can be configured independently and which
include interval timer functionality. Failsafe operation shall be
supported to allow programmable default states for all relays.
Measurement Inputs
The analyzer shall be offered in single and dual input configurations,
and shall allow unrestricted dual measurement combinations.
Measurement inputs 1 or 2 can be pH, ORP, ISE, Resistivity,
Conductivity, Resistivity, % Concentration, Chlorine, Oxygen, Ozone,
Temperature, Turbidity, Flow, or 4-20mA Current Input.
Reconfiguration shall be possible by exchanging modular signal
boards for any indicated measurement listed above. Separate signal
input measurement boards shall be available to allow field reconfiguration of any Model 1056 unit.
Digital Communications
The instrument shall offer HART and Profibus DP as digital communications ordering options. HART and Profibus DP will support all
single and dual measurement configurations and will operate with
available AC or DC power supplies.
Special measurements
The analyzer shall measure ammonia and fluoride using commercially
available ion-selective electrodes. When the proper chlorine sensor
is used, the analyzer shall be capable of measuring free chlorine with
automatic correction for pH. The analyzer shall be able to derive and
display pH using two contacting conductivity boards and the appropriate contacting conductivity sensors. With a dual input conductivity configuration, the analyzer shall be capable of measuring differential conductivity and displaying the measurement value as ratio, %
rejection, or % passage. Dual flow configurations shall allow % recovery, flow difference, % flow ratio, flow ratio, or totalized difference.
Enclosure and Installation
The analyzer enclosure shall be constructed of polycarbonate and
designed to meet NEMA 4X/CSA 4 (IP65) requirements. The instrument fits standard ½ DIN panel cutouts. One enclosure design shall
support panel-mount, pipe-mount, and surface/wall-mount installations.
Wiring
The instrument shall ship with removable connectors for power and
current outputs. Individual wiring lead designations for each input
board shall be labeled to facilitate easy wiring. Further, each signal
board shall slide out fully or partially to aid in ease of wring.
Start-up
Quick Start screens shall appear the first time the instrument is
powered up, The instrument shall automatically recognize each
measurement board upon power-up.
Outputs
The analyzer shall include two 4-20 mA or 0-20 mA isolated outputs,
continuously adjusted, with output dampening and linear or logarithmic
output. The outputs shall be independently programmed to
correspond to the selected measurement(s) or temperature.
Display and Languages
The analyzer shall have a 58 x 78mm display with 128 X 96 pixel
resolution and backlight. The LCD shall display large process variables (14mm [1/2”] character height) for both sensor inputs and allow
the user to program the main display with user-selectable diagnostic
parameters. Seven local languages shall be field selectable
including English, French, German, Italian, Spanish, Portuguese or
Chinese. The main display format shall be customizable to meet
measurement or diagnostic display requirements.
Automatic Buffer Recognition
For pH measurement, the analyzer shall include an automatic buffer
recognition feature, using stored buffer values and their temperature
curves for the most common buffer standards available worldwide.
The analyzer shall automatically recognize the value of the buffer
being measured and perform a self stabilization check on the sensor
before completing the calibration.
Temperature
Manual or automatic temperature compensation shall be menu selectable. Changes in the measurement due to process temperatures
shall be compensated using a programmable temperature coefficient
except for turbidity, flow and 4-20mA current input. For pH, temperature compensations shall be standard. Temperature compensation is
also available for high purity, dilute base, and custom applications.
The analyzer shall automatically recognize either a Pt100 RTD or a
Pt1000 RTD, normally built into the sensor. The display of temperature shall be in °C or °F.
Security and Hold
The analyzer shall have two levels of password access to prevent
accidental or unwanted changes to the program settings, displays,
and calibration. One access code is for calibration and hold of current
outputs; the other access code is for all menus and functions. During
hold, the outputs and alarms shall remain at the last value.
Diagnostics
The instrument shall have a dedicated DIAGNOSTIC button and the
analyzer shall continuously monitor itself and the sensor for faults,
and display fault and/or warning messages. Faults and warnings
shall be quickly accessible via the dedicated Diagnostic button and
help screens shall be displayed to assist in troubleshooting.
Calibration
Depending on the selected measurement, the analyzer shall have
several calibration methods.
a) pH: Automatic buffer, Standardization, and Slope calibration
methods
b) Amperometric: Air cal, Zero cal, In process cal, and
Sensitivity/slope entry
c) Conductivity: Zero cal, In process cal, Meter cal, and entry of cell
constant.
d) Turbidity: Slope cal (2-point), Standard cal (1-point), and Grab cal.
The analyzer shall be a Rosemount Analytical Model 1056 dual-input
analyzer, Model number 1056-XX-XX-XX-XX
Engineering Specifications - Model 1056 Dual Input Intelligent
Analyzer
April 2008
Measurement Range Performance
pH 0-14pH ±0.01pH
ORP -1500 to 1500mV ±1 mV
Contact conductivity
0.01μS/cm–600mS/cm
±0.6%
Toroidal conductivity
1μS -2000mS/cm
±1%
Free Chlorine 0-20 ppm ±1%
Total Chlorine 0-20 ppm ±1%
Monochloramine 0-20 ppm ±1%
Dissolved oxygen 0-20 ppm ±1%
Dissolved ozone 0-10 ppm ±1%
Turbidity 0-20NTU ±2%
Flow 0 - 99999 GPM ±1% ±0.5%
4-20mA input 0-20mA
±0.03mA
Engineering Specifications - Model 1056 Dual Input Intelligent Analyzer April 2008
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