Reference Manual
0809-0100-3157
0
Rev. AD
March 2020
Rosemount
™
1057
Three-Input Intelligent Analyzer
Essential Instructions
Read this page before proceeding
Your instrument purchase from Emerson is one of the finest available for your particular application. These instruments have been
designed, and tested to meet many national and international standards. Experience indicates that its performance is directly related to the quality of the installation and knowledge of the user in operating and maintaining the instrument. To ensure their continued operation to the design specifications, personnel should read this manual thoroughly before proceeding with installation,
commissioning, operation, and maintenance of this instrument. If this equipment is used in a manner not specified by the manufacturer, the protection provided by it against hazards september be impaired.
ailure to follow the proper instructions september cause any one of the following situations to occur: Loss of life; personal
• F
injury; property damage; damage to this instrument; and warranty invalidation.
• Ensure that you have received the correct model and options from your purchase order. Verify that this manual covers your
model and options. If not, call 1-800-854-8257 or 949-757-8500 to request correct manual.
• For clarification of instructions, contact your Rosemount representative.
• Follow all warnings, cautions, and instructions marked on and supplied with the product.
• Use only qualified personnel to install, operate, update, program and maintain the product.
• Educate your personnel in the proper installation, operation, and maintenance of the product.
• Install equipment as specified in the Installation section of this manual. Follow appropriate local and national codes. Only
connect the product to electrical sources specified in this manual.
• Use only factory documented components for repair. Tampering or unauthorized substitution of parts and procedures can
affect the performance and cause unsafe operation of your process.
• All instrument enclosures must be closed and protective covers must be in place unless qualified personnel are performing
maintenance.
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WARNING
Physical access
Unauthorized personnel may potentially cause significant damage to and/or misconfiguration of end users’ equipment. This could be intentional or unintentional and needs to be protected against.
Physical security is an important part of any security program and fundamental to protecting your system. Restrict
physical access by unauthorized personnel to protect end users’ assets. This is true for all systems used within the
facility.
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66
Essential Instructions i
Quick Start Guide
1. Refer to Section 2 for mechanical installation instructions.
2. Wire sensor(s) to the signal boards. See Section 3 for wiring instructions. Refer to the sensor instruction sheet for
additional details. Make current output, alarm relay and power connections.
3. Once connections are secured and verified, close panel and apply power to the analyzer.
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4. When the analyzer is powered up for the first time, Quick Start screens appear. Quick Start operating tips are as
follows:
a. A backlit field shows the position of the cursor.
b. To move the cursor left or right, use the keys to the left or right of the ENTER key. To scroll up or down or to
increase or decrease the value of a digit use the keys above and below the ENTER key . Use the left or right keys to
move the decimal point.
c. Press ENTER to store a setting. Press EXIT to leave without storing changes. Pressing EXIT during Quick Start
returns the display to the initial start-up screen (select language).
5. Complete the steps as shown in the Quick Start Guide flow diagram, Figure A .
6. After the last step, the main display appears. The outputs are assigned to default values.
7. To change output, and temperature-related settings, go to the main menu and choose Program. Follow the
prompts. For a general guide to the Program menu, see the Quick Reference Guide, Figure B.
8. To return the analyzer to the default settings, choose Reset Analyzer under the Program menu.
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Quick Start Guide ii
Quick Start Guide
Figure A. Quick Start Guide
Quick Start Guideiii
Quick Reference Guide
Figure B. Model 1057 Menu Tree
Quick Reference Guide iv
Reference Manual
00809-0100-3157
Contents
Table of Contents
March 2020
Quick Start Guide ...................................................................................................................iii
Quick Reference Guide............................................................................................................v
About This Document............................................................................................................vi
Table of Contents..................................................................................................................vii
Section 1: Description and Specifications
1.1 Features and Applications...........................................................................................1
1.2 Specifications - General................................................................................................2
1.3 Contacting Conductivity (Codes -20, -30, -40).............................................................4
1.4 pH/ORP/ISE (Codes -22, -32, -42).................................................................................5
Section 2: Installation
2.1 Unpacking and Inspection............................................................................................7
2.2 Installation....................................................................................................................7
Section 3: Wiring
3.1 General...................................................................................................................... 11
3.2 Preparing Conduit Openings......................................................................................12
3.3 Preparing Sensor Cable..............................................................................................12
3.4 Power, Output and Sensor Connections ....................................................................12
Section 4: Display and operation
4.1 User Interface.............................................................................................................17
4.2 Instrument Keypad ....................................................................................................17
4.3 Main Display...............................................................................................................18
4.4 Menu System .............................................................................................................19
Section 5: Programming the Analyzer – Basics
5.1 General.......................................................................................................................21
5.2 Changing the Startup Settings...................................................................................21
5.3 Choosing Temperature Units and Automatic/Manual
Temperature Compensation......................................................................................22
5.4 Configuring and Ranging The Current Outputs .........................................................22
5.5 Setting a Security Code ..............................................................................................24
5.6 Security Access...........................................................................................................24
5.7 Using Hold..................................................................................................................25
5.8 Resetting the Factory Default Settings.......................................................................25
5.9 Programming Alarm Relays .......................................................................................26
Table of Contents v
Table of Contents
March 2020
Section 6: Programming Measurements
Section 7: Calibration
Section 8: Return of Material
Reference Manual
00809-0100-3157
6.1 Programming Measurements - Introduction...........................................................31
6.2 pH Measurement Programming................................................................................31
.3ORP Measurement Programming..............................................................................33
6
6.4 Contacting Conductivity ............................................................................................34
7.1 Unpacking and Inspection..........................................................................................41
7.2 pH Calibration ............................................................................................................41
7.3 ORP Calibration..........................................................................................................44
7.4 Contacting Conductivity Calibration..........................................................................45
7.5 Calibrating Temperature............................................................................................48
8.1 General...................................................................................................................... 53
8.2 Warranty Repair .........................................................................................................53
8.3 Non-Warranty Repair .................................................................................................53
Table of Contentsvi
Reference Manual
00809-0100-3157
Section 1: Description and Specifications
Section 1: Description and Specifications
March 2020
• M
• L
• Easy to install – modular boards, removable connectors, easy to wire power, sensors, an
• Intuitive menu screens with advanced diagnostics and help screens.
• SMART - Enabled - compatible with SMART pH sensors.
• Eight menu languages.
• Four analog outputs.
• UL and CSA approved.
ulti-parameter instrument – up to three inputs. Choose pH/ORP/ISE or contacting
conductivity/resistivity in any combination.
arge display – large easy-to-read process measurements.
outputs.
1.1 Features and Applications
The Model 1057 analyzer offers three sensor inputs and four current outputs thus reducing the cost
per loop and saving panel space. The pH signal input board supports pH, ORP, and Ion-Selective
Electrode measurements. The conductivity signal input board supports contacting conductivity,
resistivity, total dissolved solids, salinity and percent concentration curves for special applications.
The modular design allows signal input boards to be field replaced making configuration changes
easy. Conveniently, live process values are always displayed during programming and calibration
routines. Standard features include isolated inputs, eight embedded local languages, four 4-20mA
current outputs, four alarm relays and removable connectors for power and current outputs.
Quick Start Programming: Exclusive quick start screens appear the first time the Model 1057 is
powered. The instrument auto-recognizes each measurement board and prompts the user to
configure each sensor loop in a few quick steps for immediate deployment.
Menus: Menu screens for calibrating and programming are simple and intuitive. Plain language
prompts and help screens guide the user through these procedures.
4-Electrode Conductivity: For applications requiring wide range conductivity measurements, use
Rosemount Model 410VP 4-electrode sensor. It is not affected by fouling and is
supported by the same contacting conductivity signal board as traditional 2-electrode sensors.
Three Sensor Inputs: The Model 1057 accepts one, two or three isolated inputs. Inputs are isolated
from other signal sources and earth ground.
Four Current Outputs: Four 0/4-20 mA current outputs are electrically isolated. Outputs are fully
scalable and can be programmed to linear or logrithmic modes. Output dampening can be enabled
with time constants from 0 to 999 seconds.
Enclosure: The instrument fits standard ½ DIN panel cutouts. The versatile enclosure design supports
panel-mount, pipe-mount, and surface/wall-mount installations.
Smart pH Sensors: Avoid buffer calibrations in the field. Use Rosemount SMART pH sensors to
automatically calibrate the measurement loop when connected to Model 1057. Choose from a
complete range of SMART pH sensors suited to most applications.
Section 1: Description and Specifications 1
Section 1: Description and Specifications
March 2020
Security Access Codes: Two levels of security access are available. Program one access code for
outine calibration and hold of current outputs; program another access code for all menus and
r
functions.
Diagnostics: The analyzer continuously monitors itself and the sensor(s) for problematic conditions.
he display flashes fault and/or warning when these conditions occur.
T
Diagnostics
Faults
Warnings
ensor 1
S
Sensor 2
Sensor 3
Out 1: 12.05 mA
Out 2: 12.05 mA
Out 3: 12.05 mA
Out 4: 12.05 mA
1057PPC03AN
Instr SW VER: 3.12
AC Freq. Used: 60Hz
Information about each condition is quickly accessible
by pressing DIAG on the keypad. User help screens are
displayed for most fault and warning conditions to
assist in troubleshooting.
Reference Manual
00809-0100-3157
Display: The high-contrast LCD provides live measurement readouts in large digits and shows up to
six additional process variables or diagnostic parameters. The display is back-lit and the format can
be customized to meet user requirements.
Local Languages: Rosemount extends its worldwide reach by offering eight local languages
– English, French, German, Italian, Spanish, Portuguese, Chinese and Russian. Every unit includes user
programming menus; calibration routines; faults and warnings; and user help screens in all eight lan
guages. The displayed language can be easily set and changed using the menus.
1.2 Specifications - General
Enclosure: Polycarbonate. Type: CSA 4X (IP65).
Dimensions: Overall 155 x 155 x 131mm (6.10 x 6.10 x 5.15 in.). Cutout: 1/2 DIN 139mm x 139mm
(5.45 x 5.45 in.)
Minimum depth for panel mount insatllations 101.6 mm (4.0 in).
Conduit Openings: Accepts 1/2” or PG13.5 conduit fitings
Display: Monochromatic graphic liquid crystal display. 128 x 96 pixel display resolution.
Backlit. Active
display area: 58 x 78mm (2.3 x 3.0 in.).
Ambient Temperature and Humidity: 0 to 55 °C (32 to 131 °F). RH 5 to 95 (non-condensing)
Storage Temperature Effect: -20 to 60 °C (-4 to 140 °F)
Power: Code 02: 20 to 30 Vdc. 15 W.
Code 03: 84 to 265 Vac, 47.5 to 65.0 Hz, switching. 15 W.
Equipment protected by double insulation
Section 1: Description and Specifications2
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Reference Manual
00809-0100-3157
Section 1: Description and Specifications
March 2020
Hazardous Location Approvals:
Options for CSA:02, 03, 20, 21, 22, 24, 25, 26, 30, 31, 32, 34, 35, 36, 38, 40, 41, 42, 44, 45, 46, 48, UL
Class I, Division 2, Groups A, B, C, & D
Class Il, Division 2, Groups E, F, & G
Class Ill
T4 Tamb= 55 °C (applies to all classes)
Type 4X, IP66
Non-Incendive Field Wiring (NIFW) may be used when installed per drawing
1400680. The ‘C’ and ‘US’ indicators adjacent to the CSA Mark signify that the product has been
evaluated to the applicable CSA and ANSI/UL Standards, for use in Canada and the U.S. respectively.
Evaluated to CSA Standard 22.2 No. 0-10, 0.4-04, 25-1996, 94- M1991, 142-M1987, 213-M1987,
60529-2005/2015. ANSI/IEC 60529-2004/2011. ANSI/ISA 12.12.01:2007. UL No. 50, 11th Ed.,
508,17th Ed.
Ordinary Locations (only with UL ordering option):
Pollution Degree 2: Normally only non-conductive pollution occurs. Occasionally, however, a
temporary conductivity caused by condensation must be expected.
Altitude: for use up to 2000 meter (6562 ft.)
EMI/RFI effect
Meets all industrial requirements of EN61326.
Analog communication
No effect on the values being given if using a 4-20 mA analog signal with shielded, twisted pair wiring.
LVD: EN 61010-1
Alarm Relays: Four alarm relays for process measurement(s) or temperature. Any relay can be
configured as a fault alarm instead of a process alarm. Each relay can be configured independently
and each can be programmed with interval timer settings.
Maximum Relay Current
Resistive
28 Vdc 5.0 A
115 Vac 5.0 A
230 Vac 5.0 A
Inputs: Up to three sensor inputs-electrically isolated.
Relays: Form C, SPDT, epoxy sealed
Inductive load: 1/8 HP motor (max.), 120/240 Vac
Inductive load: Four 4-20 mA or 0-20 mA isolated current outputs. Fully scalable. Max Load: 550
Ohms.
Current Output Accuracy: ±0.05 mA @25 °C
Section 1: Description and Specifications 3
Section 1: Description and Specifications
March 2020
Reference Manual
00809-0100-3157
Terminal Connections Rating:
Power connector (3-leads): 24-12 AWG wire size. Signal board terminal blocks: 26-16 AWG wire size.
Current output connectors (4-leads): 24-16 AWG wire size. Alarm relay terminal blocks: 24-12 AWG
wire siz
Weight/Shipping Weight: (rounded up to nearest lb or nearest 0.5 kg): 3 lbs/4 lbs (1.5 kg/2.0 kg)
1.3 Contacting Conductivity (Codes -20, -30 and -40)
Measures conductivity in the range 0 to 600,000 µS/cm (600mS/cm). Measurement choices are
conductivity, resistivity, total dissolved solids, salinity, and % concentration. The % concentration
selection includes the choice of five common solutions (0-12% NaOH,0-15% HCl, 0-20% NaCl, and 0-25%
or 96-99.7% H2SO4). The conductivity concentration algorithms for these solutions are fully
temperature compensated. Three temperature compensation options are available: manual slope
(X%/°C), high purity water (dilute sodium chloride), and cation conductivity (dilute hydrochloric acid).
Temperature compensation can be disabled, allowing the analyzer to display raw conductivity. For
more information concerning the use and operation of the contacting conductivity sensors, refer to
the product data sheets.
Note: When contacting conductivity sensors are used for sensor 1 and sensor 2, Model 1057 can
derive an inferred pH value called pHCalc. pHCalc is calculated pH, not directly measured pH.
Note: Selected 4-electrode, high-range contacting conductivity sensors are compatible with
Model 1056.
Input filter: time constant 1 - 999 seconds, default 2 seconds
Response time: 3 seconds to 100% of final reading
Salinity: Uses Practical Salinity Scale
Total Dissolved Solids: Calculated by
multiplying conductivity at 25 °C by 0.65
Recommended Sensors For Conductivity
All Rosemount ENDURANCE Model 400 series conductivity sensors
(Pt 1000 RTD) and Model 410 sensor.
Temperature Specifications:
Temperature range 0-200 °C
Temperature Accuracy,
Pt-1000, 0-50 °C
Temperature Accuracy,
Pt-1000, Temp. > 50 °C
± 0.1 °C
± 0.5 °C
Performance Specifications
Recommended Range – Contacting Conductivity
Cell 0.01µS/cm 0.1µS/cm 1.0µS/cm 10µS/cm 100µS/cm 1000µS/cm 10mS/cm 100mS/cm 1000mS/cm
Constant
0.01
0.1
1.0
4-electrode
0.01µS/cm to 200µS/cm
0.1µS/cm to 2000µS/cm
1 µS/cm to 20mS/cm
200µS/cm to 6000µS/cm
2000µS/cm to 60mS/cm
20mS/cm to 600mS/cm
2 µS/cm to 300mS/cm
Cell Constant Linearity
±0.6% of reading in recommended range
+2 to -10% of reading outside high recommended range
±5% of reading outside low recommended range
±4% of reading in recommended range
Section 1: Description and Specifications4
Reference Manual
00809-0100-3157
Section 1: Description and Specifications
1.4 pH/ORP/ISE (Codes -22, -32, and -42)
For use with any standard pH or ORP sensor. Measurement choices are pH, ORP, Redox, ammonia,
fluoride or custom ISE. The automatic buffer recognition feature uses stored buffer values and their
temperature curves for the most common buffer standards available worldwide. The analyzer will
recognize the value of the buffer being measured and perform a self stabilization check on the sensor
before completing the calibration. Manual or automatic temperature compensation is menu
selectable. Change in pH due to process temperature can be compensated using a programmable
temperature coefficient. For more information concerning the use and operation of the pH or ORP
sensors, refer to the product data sheets.
Model 1057 can also derive an inferred pH value called pHCalc (calculated pH). pHCalc can be derived
and displayed when two contacting conductivity sensors are used as sensor 1 and sensor 2.
Performance Specifications - Analyzer (pH Input)
Measurement Range [pH]: 0 to 14 pH
Accuracy: ±0.01 pH
Diagnostics: Glass impedance, reference impedance
Temperature coefficient: ±0.002pH/ °C
Solution temperature correction: Pure water, dilute base and custom.
Buffer recognition: NIST, DIN 19266, JIS 8802, and BSI.
Input filter: Time constant 1 - 999 seconds, default 4 seconds.
Response time: 5 seconds to 100%
Sensor Compatibility: Model 1057 is also compatible with SMART pH sensors from Rosemount.
Choose from 14 SMART sensor models for a wide array of applications and process
conditions.
March 2020
Performance Specifications - Analyzer (ORP Input)
Measurement Range [ORP]: -1500 to +1500 mV
Accuracy: ± 1 mV
Temperature coefficient: ±0.12mV / °C
Input filter: Time constant 1 - 999 seconds,
default 4 seconds.
Response time: 5 seconds to 100% of final reading
Recommended Sensors For ORP: All standard
ORP sensors.
Temperature Specifications:
Temperature range 0-150 °C
Temperature Accuracy, Pt-100, 0-50 °C ± 0.5 °C
Temperature Accuracy, Temp. > 50 °C ± 1 °C
Fourteen SMART sensor models include PERpH-X,
TUpH and general purpose pH sensor families.
Section 1: Description and Specifications 5
Section 1: Description and Specifications
March 2020
Reference Manual
00809-0100-3157
Section 1: Description and Specifications6
Reference Manual
00809-0100-3157
Section 2: Installation
March 2020
Section 2: Installation
2.1 Unpacking and Inspection
nspect the shipping container. If it is damaged, contact the shipper immediately for instructions.
I
Save the box. If there is no apparent damage, unpack the container. Be sure all items shown on the packing list are present. If items are missing, notify Rosemount immediately.
2.2 Installation
2.2.1 General Information
1. Although the analyzer is suitable for outdoor use, do not install it in direct sunlight or in areas
of extreme temperatures.
2. Install the analyzer in an area where vibration and electromagnetic and radio frequency
interference are minimized or absent.
3. Keep the analyzer and sensor wiring at least one foot from high voltage conductors. Be sure
there is easy access to the analyzer.
4. The analyzer is suitable for panel mounting (Figure 2-1) or Wall and pipe
mounting (Figure 2-2).
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Section 2: Installation 7
Section 2: Installation
March 2020
Figure 2-1 Panel Mounting Dimensions
Reference Manual
00809-0100-3157
Front View
Bottom View
Side View
The front panel is hinged at the bottom. The panel swings down for easy access to the wiring locations. Panel
mounting seal integrity (4/4X) for outdoor applications is the responsibility of the end user.
Section 2: Installation8
Reference Manual
00809-0100-3157
Figure 2-2 Pipe and Wall Mounting Dimensions
Section 2: Installation
March 2020
Wall / Surface Mount
Front View
Bottom View
Side View
Pipe Mount
Side View
The front panel is hinged at the bottom. The panel swings down for easy access to the wiring locations.
Section 2: Installation 9
Section 2: Installation
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pH
SMART pH/ORP
ASSY 24312- REV
SHLD
R40
U
1
2
1
Z4
R
6
4
3
7
R
6
6
R
C3
C2
Z3
C4
5
6
R
U2
1
RTD RTN
CONTACTING
CONDUCTIVITY
ASSY 24355- REV
SHLDSHLD
RTD IN
SEN SEN
4CT4CT
SEN
SHLD
C
3
5
R40
R
5
2
C
3
8
C17
R
5
4
R
4
9
8
5
R
C44
C20
Q3
R44
R41
C
1
3
2
4
R
R13
R
5
5
C
12
5
3
R
9
2
C
C24
R
3
7
R
6
0
C
34
R36
R
7
5
R70
C
2
5
74C
C40
R20
U
1
4
C42
C62
C5
R45
C41
C54
C
1
C
39
C45
R9
R6
R68
C49
R67
1
5
C
C
5
5
C57
R63
R
3
R
12
R
1
C63
R25
R18
R30
Z
1
C65
C64
R7
3
5
C
Z9
C23
C30
+
C52
U
1
7
R
48
U16
1
R
74
R19
C18
U19
U2
R69
R72
U1
C21
R
3
1
R
4
6
R14
R
4
R5
1
3
C
C28
+
R57
U26
R53
7
2
C
+
0
5
C
+
C14
Z8
R
2
R
6
2
R61
R8
U
1
0
R11
R
76
R15
C16
R28
C56
R59
C
22
0
1
R
C26
+
U22
U
2
3
C
6
U11
TB1
2
3
C
C
3
6
C59
C7
C48
Z2
U24
Y1
R38
U
2
5
U4
U15
R
71
R47
C43
U
2
8
9
2
U
C58
C46
J1
U
6
U
5
TB2
1
6
C
8
C9
C10
C11
C15
C66
C
6
7
L1
Z5
U9
C60
+
U27
U20
6
Z
Z7
C37
1
6
C
POWER SUPPLY
ALARM
WIRING (VAC)
(OPTIONAL)
ANALOG OUTPUT
SENSOR 1
ANY CSA APPROVED DEVICE
OR SIMPLE APPARATUS
UNCLASSIFIED AREA
1057
CLASS 1 DIVISION 2, GROUPS ABCD 0-50°C
CLASS II, III DIVISION 2 GROUPS EFG
6. SIMPLE APPARATUS IS DEFINED AS AN ELECTRICAL DEVICE THAT DOES NOT GENERATE MORE
1.3W. CONTACTING CONDUCTIVITY SENSORS AND pH, ORP, AMPEROMETRIC SENSORS WITHOUT
PREAMPS QUALIFY AS SIMPLE APPARATUS.
5
NON-INCENDIVE FIELD WIRING METHODS MAY BE USED FOR CONNECTING SENSORS TO THE 20/30 AND 22/32
OPTION BOARDS. SENSORS MUST BE CSA APPROVED AS NON-INCENDIVE FOR CLASS I, DIVISION 2,
Voc AND Isc LISTED IN TABLES 1A TO 1C
AND THE Ci AND Li OF THE SENSOR AND INTERCONNECTED WIRING MUST BE
Ca AND La LISTED IN TABLES
1A TO 1C
OR BE CLASSIFIED AS SIMPLE APPARATUS
.
4
INSTRUMENT ENCLOSURE. AFTER TERMINATION, WRAP N.I. FIELD WIRING WITHIN ENCLOSURE WITH MYLAR TAPE, TO
ENSURE ADEQUATE DOUBLE INSULATION REMAINS.
3
GROUND CONNECTION MAY BE MADE IN HAZARDOUS AREA.
2. SEAL REQUIRED AT EACH CONDUIT ENTRANCE, WHEN CONDUIT IS USED.
1. INSTALLATION MUST CONFORM TO THE CEC.
SENSOR 2 (OPTIONAL)
ANY CSA APPROVED DEVICE OR
SIMPLE APPARATUS
UNCLASSIFIED AREA
METAL CONDUIT
METAL CONDUIT
METAL CONDUIT
METAL CONDUIT
SENSOR CABLE
IS SHIELDED
5
METAL CONDUIT
3
4
4
SENSOR 1
ANY CSA APPROVED DEVICE OR
SIMPLE APPARATUS
WARNING
IF THE SENSOR TIP HAS EXPOSED ELECTRODES,
THEN IT MUST ONLY BE USED IN A NON-FLAMMABLE LIQUID PROCESS
TABLE 1A
ENTITY PARAMETERS FOR
OPTION 22/32 (pH / ORP / ISE SENSOR BOARD)
TABLE 1B
ENTITY PARAMETERS FOR OPTION 20/30
(CONTACTING CONDUCTIVITY SENSOR BOARD)
SENSOR 3 (OPTIONAL)
ANY CSA APPROVED DEVICE OR
SIMPLE APPARATUS
SENSOR 3 (OPTIONAL)
ANY CSA APPROVED DEVICE OR
SIMPLE APPARATUS
SENSOR 2 (OPTIONAL)
ANY CSA APPROVED DEVICE OR
SIMPLE APPARATUS
METAL CONDUIT
SENSOR CABLE
IS SHIELDED
5
5
SENSOR CABLE
IS SHIELDED
NON-INCENDIVE FIELD WIRING CONNECTIONS
FOR CLASS 1, DIVISION 2, GROUPS ABCD
OPTION 22/32 (pH/ORP SENSOR BOARD)
OPTION 20/30 (CONTACTING CONDUCTIVITY SENSOR BOARD)
OUTPUT
PARAMETERS
pH TB1
CONNECTOR
Voc, Vo
Isc, Io
115 mA
276.8 mW
Ca
La
6 mH
OUTPUT
PARAMETERS
CONDUCTIVITY
CONNECTORS
TB1, TB2
Voc, Vo
6.633 V
Isc, Io
30.45 mA
50.5 mW
Ca
La
85 mH
NOTES: UNLESS OTHERWISE SPECIFIED
SCALE: 1:1
WEIGHT:
SIZE
D
DWG NO
SHEET 1 OF 1
B
1400680
REV
THIS DOCUMENT IS CERTIFIED BY
CSA (REVISION A)
REVISIONS ARE NOT PERMITTED
WITHOUT CSA APPROVAL
March 2020
Figure 2-3 Non Incendive Field Wiring Installation (CSA)
Reference Manual
00809-0100-3157
Section 2: Installation10
Reference Manual
00809-0100-3157
Section 3: Wiring
3.1 General
The Model 1057 is easy to wire. It includes removable connectors and slide-out signal input boards.
3.1.1 Removable Connectors and Signal Input Boards
Model 1057 uses removable signal input boards and communication boards for ease of
wiring and installation. Each of the signal input boards can be partially or completely removed
from the enclosure for wiring. The Model 1057 has three slots for placement of up to three
signal input boards and one communication board.
Figure 3-1 Model 1057 Signal Input Boards
Section 3: Wiring
March 2020
Slot 1 – Left
Signal board 3
Note: If the UL option code has been ordered, a plastic insulator shield surrounds the entire power
supply board (AC power supply only). The protective insulator shield does not appear in this photo.
3.1.2 Signal Input Boards
Slots 1, 2 and 3 are for signal input measurement boards. Wire the sensor leads to the
measurement board following the lead locations marked on the board. After wiring the sensor leads
to the signal board, carefully slide the wired board fully into the enclosure slot and take up the excess
sensor cable through the cable gland. Tighten the cable gland nut to secure the cable and ensure a
sealed enclosure.
Note: that signal input board 3 is inserted into slot 1. Board 3 is inverted in the slot to allow board
components to face to the right. Board 3 uses a long ribbon cable to connect to the main PCB. Boards
1 and 2 use a split ribbon cable to connect both signal boards to a common connector on the
main board.
Slot 2 – Center
Signal board 2
Slot 3 – Right
Signal board 1
3.1.3 Alarm Relays
Four alarm relays are supplied with the switching power supply (84 to 265 Vac, 03 order code) and
the 24 Vdc power supply (20-30 Vdc, 02 order code). All relays can be used for process measure
ments or temperature. Any relay can be configured as a fault alarm instead of a process alarm.
Each relay can be configured independently and each can be programmed as an interval timer,
typically used to activate pumps or control valves. As process alarms, alarm logic (high or low acti
vation or USP*) and deadband are user-programmable. Customer-defined failsafe operation is
supported as a programmable menu function to allow all relays to be energized or not-energized
as a default condition upon powering the analyzer. The USP alarm can be programmed to activate
when the conductivity is within a user-selectable percentage of the limit. USP alarming is available
only when a contacting conductivity measurement board is installed.
Section 3: Wiring 11
Section 3: Wiring
March 2020
3.2 Preparing Conduit Openings
There are six conduit openings in all configurations of Model 1057. (Note that four plugs are provid-
ed upon shipment.)
Note: Use watertight fittings and hubs that comply with your requirements. Connect the conduit
ub to the conduit before attaching the fitting to the analyzer.
h
3.3 Preparing Sensor Cable
The Model 1057 is intended for use with all Rosemount pH/ORP and contacting
conductivity sensors. Refer to the sensor installation instructions for details on preparing
sensor cables.
3.4 Power, Output and Sensor Connections
All field wiring must be rated for 75 °C or higher. Each instrument includes a printed label inside the
enclosure stating this wiring requirement.
3.4.1 Power Wiring
Two Power Supplies are offered for Model 1057:
a. 24 Vdc (20 – 30V) Power Supply (-02 ordering code)
b. 84 – 265 Vac Switching Power Supply (-03 ordering code)
AC mains (115 or 230V) leads and 24 Vdc leads are wired to the Power Supply board which is mounted
vertically on the left side of the main enclosure cavity. Each lead location is clearly marked on the
Power Supply board. Wire the power leads to the Power Supply board using the lead markings on
the board.
Reference Manual
00809-0100-3157
Figure 3-2 24 Vdc Power Supply (-02 ordering code)
This power supply automatically detects DC
power and accepts 20 Vdc to 30 Vdc inputs.
Four programmable alarm relays are included.
Figure 3-3 Switching AC Power Supply (-03 ordering code)
This power supply automatically detects AC line
conditions and switchesto the proper line voltage and line frequency.
Four programmable alarm relays are included.
12
Section 3: Wiring
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