Emerson designs, manufactures, and tests its Rosemount products to meet many national and
international standards. Because these instruments are sophisticated technical products, you must
properly install, use, and maintain them to ensure they continue to operate within their normal
specifications. The following instructions must be adhered to and integrated into your safety
program when installing, using, and maintaining Rosemount products. Failure to follow the proper
instructions may cause any one of the following situations to occur: Loss of life; personal injury;
property damage; damage to this instrument; and warranty invalidation.
• Read all instructions prior to installing, operating, and servicing the product. If this Reference
Manual is not the correct manual, telephone 1-800-854-8257 and the requested manual will
be provided. Save this Reference Manual for future reference.
• If you do not understand any of the instructions, contact your Emerson representative for
clarification.
• Follow all warnings, cautions, and instructions marked on and supplied with the product.
• Inform and educate your personnel in the proper installation, operation, and maintenance of
the product.
• Install your equipment as specified in the Installation Instructions of the appropriate Reference
Manual and per applicable local and national codes. Connect all products to the proper
electrical and pressure sources.
• To ensure proper performance, use qualified personnel to install, operate, update, program, and
maintain the product.
• When replacement parts are required, ensure that qualified people use replacement parts
specified by Rosemount. Unauthorized parts and procedures can affect the product’s
performance and place the safe operation of your process at risk. Look alike substitutions may
result in fire, electrical hazards, or improper operation.
• Ensure that all equipment doors are closed and protective covers are in place, except when
maintenance is being performed by qualified persons, to prevent electrical shock and personal
injury.
WARNING: EXPLOSION HAZARD
DO NOT OPEN WHILE CIRCUIT IS LIVE. ONLY CLEAN WITH DAMP CLOTH.
NOTICE
If a 475 Universal HART®Communicator is used with these transmitters, the software within the 475 may
require modification. If a software modification is required, please contact your local Emerson Service Group
or National Response Center at 1-800-654-7768.
Electrostatic ignition hazard.
Special condition for safe use (when installed in hazardous area)
1. The plastic enclosure, excepting the front panel, must only be cleaned with a damp cloth. The
surface resistivity of the non-metallic enclosure materials is greater than one gigaohm. Care
must be taken to avoid electrostatic charge build-up. The 1066 Transmitter must not be
rubbed or cleaned with solvents or a dry cloth.
2. The panel mount gasket has not been tested for type of protection IP66 or Class II and III.
Type of protection IP66 and Class II, III refer the enclosure only.
Essential InstructionsI
3. The surface resistivity of the non-metallic enclosure materials is greater than one gigaohm.
Care must be taken to avoid electrostatic charge build-up. The Model 1066 Transmitter must
not be rubbed or cleaned with solvents or a dry cloth.
4. Special Condition of Use of 1066 C FF/FII5 and 1066T FF/FII5. For use with simple apparatus
model series 140, 141, 142, 150, 400, 401, 402, 402VP, 403, 403VP, 404, and 410VP contacting conductivity sensors and model series 222, 225, 226, 228 toroidal sensors.
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.
1. For mechanical installation instructions, see page 14 for panel mounting and page 15 for pipe
or wall mounting.
2. Wire the sensor to the main circuit board. See pages 21-23 for wiring instructions. Refer to the
sensor instruction sheet for additional details. Make loop power connections.
3. Once connections are secured and verified, apply DC power to the transmitter.
4. When the transmitter is powered up for the first time, Quick Start screens appear. Quick Start
operating tips are as follows:
a. A highlighted 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. Choose the desired language and press ENTER.
6. Choose measurement and press ENTER.
a. For pH, choose preamplifier location. Select Analyzer to use the integral preamplifier in the
transmitter; select Sensor/J-Box if your sensor is SMART or has an integral preamplifier or if
you are using a remote preamplifier located in a junction box.
5. If applicable, choose units of measurement.
6. For contacting and toroidal conductivity, choose the sensors type and enter the numeric cell
constant using the keys.
7. Choose temperature units: °C or °F.
8. After the last step, the main display appears. The outputs are assigned to default values.
9. To change output settings, to scale the 4-20 mA current outputs, to change measurementrelated settings from the default values, and to enable pH diagnostics, press MENU. Select
Program and follow the prompts. Refer to the appropriate menu.
10. To return the transmitter to the factory default settings, choose Program under the main
menu, and then scroll to Reset.
11. Please call the Rosemount Customer Support Center at 1-800-854-8257 if you need further
support.
Quick Start Guide1
Section 2: Description and SpecificationsReference Manual
March 202000809-0100-3166
2Description and Specifications
Reference ManualSection 2: Description and Specifications
00809-0100-3166March 2020
Section 2: Description and Specifications
2.1
Features and Applications
This loop-powered multi-parameter unit serves industrial, commercial and municipal applications
with the widest range of liquid measurement inputs available for a two-wire liquid transmitter.
The 1066 Smart transmitter supports continuous measurement of one liquid analytical input. The
design supports easy internal access and wiring connections.
Analytical Inputs
Total Chlorine, Free Chlorine, Monochloramine, Dissolved Oxygen, and Ozone.
Large Display
up to four additional variables or diagnostic parameters.
Digital Communications
Menus
: Menu screens for calibrating and programming are simple and intuitive. Plain language
prompts and help screens guide the user through the procedures. All menu screens are available in
eight languages. Live process values are displayed during programming and calibration.
Quick Start Programming
instrument prompts the user to configure the sensor loop in a few quick steps for immediate commissioning.
User Help Screens
provide useful troubleshooting tips to the user. These on-screen instructions are intuitive and easy
to use.
: Ordering options for pH/ORP, Resistivity/Conductivity, % Concentration,
: The high-contrast LCD provides live measurement readouts in large digits and shows
: HART 7 and FOUNDATION Fieldbus options.
: Popular Quick Start screens appear the first time the unit is powered. The
: Fault and warning messages include help screens similar to PlantWeb™alerts that
Diagnostics:
banner on the screen alerts Technicians to Fault and/or Warning conditions.
Languages
German, Italian, Spanish, Portuguese, Chinese and Russian.
Current Outputs
ability to transmit the live measurement value and the process temperature reported from the sensor.
Input Dampening
Smart-Enabled pH
through automatic upload of calibration data and history.
Automatic Temperature Compensation
The 1066 will automatically recognize Pt100, Pt1000 or 22k NTC RTDs built into the sensor.
Smart Wireless Thum Adaptor Compatible
diagnostics from hard-to-reach locations.
The transmitter continuously monitors itself and the sensor for problems. A display
: Emerson extends its worldwide reach by offering eight languages – English, French,
: HART units include two 4-20 mA electrically isolated current outputs giving the
: is automatically enabled to suppress noisy process readings.
: Rosemount SMART pH capability eliminates field calibration of pH probes
: Most measurements require temperature compensation.
: Enable wireless transmissions of process variables and
Specifications3
Section 2: Description and SpecificationsReference Manual
March 202000809-0100-3166
2.2
Specifications - General
Case: Polycarbonate. IP66 (CSA, FM), Type 4X (CSA)
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.)
Conduit openings: Six. Accepts PG13.5 or 1/2 in. conduit fittings
Display: Monochromatic graphic liquid crystal display. No backlight. 128 x 96 pixel display resolu-
tion. Active display area: 58 x 78mm (2.3 x 3.0 in.). All fields of the main instrument display can be
customized to meet user requirements.
Ambient temperature and humidity: -20 to 65 °C (-4 to 149°F), RH 5 to 95% (non-condensing).
Storage Temperature: -20 to 70 °F (-4 to 158 °F)
®
HART
HART diagnostics.
EMI/RFI effect
Meets all basic environment requirements of EN61326.
Analog and digital communications
No effect on the values being given if using a 4-20 mA analog, FOUNDATION Fieldbus digital, or
HART digital signal with shielded, twisted pair wiring.
Note 1:
Communications: PV, SV, TV, and 4V assignable to measurement, temperature and all live
During EMI disturbance, maximum deviation is ±0.006 ppm (6 ppb) for model options
Class I, II, III, Div. 1*
Groups A-G
T4 Tamb = -20 °C to 65 °C
Enclosure 4X, IP66
For Intrincically Safe Installation,
see drawing 1400669
ATEX
1180 II 1 G
Baseefa11ATEX0195X
Ex ia IIC T4 Ga
T4 Tamb = -20 °C to 65 °C
Non-Incendive:
Class I, Div. 2, Groups A-D*
Dust Ignition Proof Class II & III, Div 1, Groups EFG
Class II & III, Div. 1, Groups E-G
Type 4/4X Enclosure
T4 Tamb = -20 °C to 65 °C
For Non-Incendive Field Wiring Installation, see drawing 1400669
*Additionally approved as a system with models 140,141,142, 150, 400, 400VP, 401, 402, 402VP, 403,403VP, 404 & 410VP contacting conductivity
sensors and models 222, 225, 226 & 228 inductive conductivity sensors.
During EMI disturbance, maximum deviation is ±150 µS/cm for model option T.
IECEx BAS 11.0098X
Ex ia IIC T4 Ga
T4 Tamb = -20 °C to 65 °C
Class I, II & III, Division 1, Groups A-G T4
Tamb = -20 °C to 65 °C
IP66 enclosure
Class I, Zone 0, AEx ia IIC T4
Tamb = -20°C to 65°C
For Intrinsically Safe Installation, see drawing 1400670
Class I, Division 2 Groups A-D
Dust Ignition proof Class II & III, Div 1, Groups EFG
Class II & III, Division 1, Groups E-G
Tamb = -20°C to 65°C,IP66 enclosure
For Non-Incendive Field Wiring Installation, see drawing 1400670
4Specifications
Reference ManualSection 2: Description and Specifications
FM: 3600: 2011, 3610: 2010, 3611: 2004, 3810: 2005, IEC 60529:2004, ANSI/ISA 60079-0: 2009,
ANSI/ISA 60079-11: 2009Input: One isolated sensor input. Measurement choices of pH/ORP, resis-
tivity/conductivity/TDS, % concentration, total and free chlorine, monochloramine, dissolved oxygen, dissolved ozone, and temperature. For contacting conductivity measurements, temperature
element can be a PT1000 RTD or a PT100 RTD. Other measurements (except ORP) and use PT100
or PT1000 RTDs or a 22k NTC (D.O. only).
Power and Load Requirements:Supply voltage at the transmitter terminals should be at least 12.7
Vdc. Power supply voltage should cover the voltage drop on the cable plus the external load resistor required for HART communications (250 Ω minimum). Minimum power supply voltage is 12.7
Vdc. Maximum power supply voltage is 42.4 Vdc (30 Vdc for intrinsically safe operation). The
graph shows the supply voltage required to maintain 12 Vdc (upper line) and 30 Vdc (lower line)
at the transmitter terminals when the current is 22 mA.
FIGURE 2-1. Load/Power Supply Requirements
Analog Outputs: Two-wire loop powered (Output 1 only). Two 4-20 mA electrically isolated cur-
rent outputs (Output 2 must be externally powered). Superimposed HART digital signal on
Output 1. Fully scalable over the operating range of the sensor.
Weight/Shipping Weight: 2 lbs/3 lbs (1 kg/1.5 kg)
Specifications5
Section 2: Description and SpecificationsReference Manual
March 202000809-0100-3166
2.3
2.3.1
2.3.2
pH/ORP (Codes – P)
For use with any standard pH or ORP sensor. SMART pH sensor with SMART pre-amplifiers from
Rosemount. Measurement choices are pH, ORP, or Redox. The automatic buffer recognition feature uses stored buffer values and their temperature curves for the most common buffer standards available worldwide. The transmitter 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.
Measurement Range [pH]: 0 to 14 pH
Accuracy: ±0.01 pH
Buffer recognition: NIST, DIN 19266, JIS 8802, and BSI.
Input filter: Time constant 1 - 999 sec, default 4 sec.
Response time: 5 seconds to 95% of final reading
Recommended Sensors for pH:
All standard pH sensors. Supports SMART pH sensors from Rosemount.
Measurement Range [ORP]: -1400 to +1400 mV
Accuracy: ± 1 mV
Input filter: Time constant 1 - 999 sec, default 4 sec.
Response time: 5 seconds to 95% of final reading
Recommended Sensors for ORP: All standard ORP sensors
FIGURE 2-2. General purpose and high performance pH sensors 3900, 396PVP
and 3300HT
6Specifications
Reference ManualSection 2: Description and Specifications
00809-0100-3166March 2020
2.4
2.4.1
Contacting Conductivity (Codes – C)
Measures conductivity in the range 0 to 600,000 µS/cm (600mS/cm). Measurement choices are
conductivity, resistivity, total dissolved solids, salinity, and % concentration. In addition, the
“Custom Curve” feature allows users to define a three to five point curve to measure ppm, %, or a
no unit variable. The % concentration selection includes the choice of five common solutions (012% 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 transmitter to display raw conductivity. For more information concerning the
use of the contacting conductivity sensors, refer to the product data sheets.
Note: The 410VP 4-electrode high-range conductivity sensor is compatible with the 1066.
Performance Specifications
Temperature specifications:
Temperature range0-200 °C
Temperature Accuracy,
Pt-1000, 0-50 °C
Temperature Accuracy,
Pt-1000, Temp. > 50 °C
± 0.1 °C
± 0.5 °C
ENDURANCETMseries of
conductivity sensors
Input filter: Time constant 1 - 999 sec, default 2 sec.
Response time: 3 seconds to 95% of final reading using the default input filter
Salinity: Uses Practical Salinity Scale
Total Dissolved Solids: Calculated by multiplying conductivity at 25 °C by 0.65
Table 2-1. Performance Specifications: Recommended Range – Contacting Conductivity
Section 2: Description and SpecificationsReference Manual
March 202000809-0100-3166
2.4.2
2.5
2.5.1
Recommended Sensors for Conductivity
All Rosemount 400 series conductivity sensors (Pt 1000 RTD) and 410VP 4-electrode sensor.
Toroidal Conductivity (Codes – T)
Measures conductivity in the range of 1 µS/cm to 2,000,000 µS/cm (2 S/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 025% or 96-99.7% H2SO4). The conductivity concentration algorithms for these solutions are fully
temperature compensated. For other solutions, a simple-to-use menu allows the customer to enter
his own data. The transmitter accepts as many as five data points and fits either a linear (two points)
or a quadratic function (three to five points) to the data. Reference temperature and linear temperature slope may also be adjusted for optimum results. Two temperature compensation options are
available: manual slope (X% / °C) and neutral salt (dilute sodium chloride). Temperature compensation can be disabled, allowing the transmitter to display raw conductivity. For more information concerning use of the toroidal conductivity sensors, refer to the product data sheets.
Performance Specifications
Temperature specifications:
High performance 225 Toroidal &
226 Conductivity sensors
Temperature range-25 to 210 °C (-13 to 410 °F)
Temperature Accuracy,
Pt-100, -25 to 50 °C
Temperature Accuracy,
Pt-100, 50 to 210 °C
± 0.5 °C
± 1 °C
Repeatability: ±0.25% ±5 µS/cm after zero cal
TABLE 2-2. Performance Specifications: Recommended Range – Toroidal Conductivity
Model 1µS/cm 10µS/cm 100µS/cm 1000µS/cm 10mS/cm 100mS/cm 1000mS/cm 2000mS/cm
226
225 & 228
242
222
(1in & 2in)
Loop Performance
(Following Calibration)
50µS/cm to 500mS/cm
50µS/cm to 1500mS/cm
100µS/cm to 2000mS/cm
500µS/cm to 2000mS/cm
226: ±1% of reading ±5µS/cm in recommended range
225 & 228: ±1% of reading ±15
222, 242: ±4% of reading ±5mS/cm in recommended range
225, 226 & 228: ±5% of reading outside high recommended range
µS/cm in recommended range
500mS/cm to 2000mS/cm
1500mS/cm to 2000mS/cm
8Specifications
Reference ManualSection 2: Description and Specifications
00809-0100-3166March 2020
Input filter: time constant 1 - 999 sec, default 2 sec.
esponse time: 3 seconds to 95% of final reading
R
Salinity: Uses Practical Salinity Scale
Total Dissolved Solids: Calculated by multiplying conductivity at 25 °C by 0.65
2.5.2
2.6
2.6.1
2.6.2
Recommended Sensors for Conductivity
All Rosemount submersion/immersion and flow-through toroidal sensors.
Chlorine (Codes – CL)
Free and Total Chlorine
The 1066 is compatible with the 499ACL-01 free chlorine sensor and the 499ACL-02 total chlorine
sensor. The 499ACL-02 sensor must be used with the TCL total chlorine sample conditioning system.
The 1066 fully compensates free and total chlorine readings for changes in membrane permeability
caused by temperature changes. For free chlorine measurements, both automatic and manual pH
correction are available. For automatic pH correction select an appropriate pH sensor. For more
information concerning the use and operation of the amperometric chlorine sensors and the TCL
measurement system, refer to the product data sheets.
Performance Specifications
Resolution: 0.001 ppm or 0.01 ppm – selectable
Input Range: 0nA – 100 µA
Automatic pH correction for Free Chlorine: (user selectable for
code -CL): 6.0 to 10.0 pH
Temperature compensation: Automatic (via RTD) or manual (050 °C).
Input filter: Time constant 1 - 999 sec, default 5 sec.
Response time: 6 seconds to 95% of final reading
499ACL-01
Chlorine sensor
2.6.3
2.6.4
Specifications9
Recommended Sensors
Chlorine: 499ACL-01 Free Chlorine or 499ACL-02Total Residual Chlorine
pH: These pH sensors are recommended for automatic pH correction of free chlorine readings:
3900-02-10, 3900-01-10, and 3900VP-02-10.
Monochloramine
The 1066 is compatible with the 499A CL-03 Monochloramine sensor. The 1066 fully compensates
readings for changes in membrane permeability caused by temperature changes. Because
monochloramine measurement is not affected by pH of the process, no pH sensor or correction is
required. For more information concerning the use and operation of the amperometric chlorine
sensors, refer to the product data sheets.
Section 2: Description and SpecificationsReference Manual
March 202000809-0100-3166
2.6.5
2.6.6
2.7
2.7.1
Performance Specifications
esolution: 0.001 ppm or 0.01 ppm – selectable
R
Input Range: 0nA – 100µA
Temperature compensation: Automatic (via RTD) or manual (0-50 °C).
Input filter: Time constant 1 - 999 sec, default 5 sec.
Response time: 6 seconds to 95% of final reading
Recommended Sensors
Rosemount 499ACL-03 Monochloramine sensor
Dissolved Oxygen (Codes –DO)
The 1066 is compatible with the 499ADO, 499ATrDO, Hx438, Gx438 and Bx438 dissolved oxygen
sensors and the 4000 percent oxygen gas sensor. The 1066 displays dissolved oxygen in ppm, mg/L,
ppb, µg/L, % saturation, % O2in gas, ppm O2in gas. The transmitter fully compensates oxygen readings for changes in membrane permeability caused by temperature changes. Automatic air calibration, including salinity correction, is standard. The only required user entry is barometric pressure.
For more information on the use of amperometric oxygen sensors, refer to the product data sheets.
Performance Specifications
2.7.2
2.8
2.8.1
2.8.2
Resolution: 0.01 ppm; 0.1 ppb for 499A TrDO sensor (when O2<1.00 ppm); 0.1%
Input Range: 0nA – 100 µA
Temperature Compensation: Automatic (via RTD) or manual (0-50 °C).
Input filter: Time constant 1 - 999 sec, default 5 sec.
Response time: 6 seconds to 95% of final reading
Recommended Sensors
Rosemount amperometric membrane and steam-sterilizable sensors listed above
Dissolved Oxygen
499ADO sensor with
Variopol connection
Ozone (Codes –OZ)
The 1066 is compatible with the 499AOZ sensor. The 1066 fully compensates ozone readings for
changes in membrane permeability caused by temperature changes. For more information concerning the use and operation of the amperometric ozone sensors, refer to the product data sheets.
Performance Specifications
Resolution: 0.001 ppm or 0.01 ppm – selectable
Input Range: 0nA – 100A
Temperature Compensation: Automatic (via RTD) or manual (0-35 °C)
Input filter: Time constant 1 - 999 sec, default 5 sec.
Response time: 6 seconds to 95% of final reading
Recommended Sensors
Dissolved Ozone
499AOZ sensors with
Variopol connection
Rosemount 499A OZ ozone sensor
10Specifications
Reference ManualSection 2: Description and Specifications
00809-0100-3166March 2020
2.9
Ordering Information
The 1066 2-Wire Transmitter is intended for the continuous determination of pH, ORP (Redox),
conductivity, (both contacting and toroidal), and for measurements using membrane-covered
amperometric sensors (oxygen, ozone, free and total chlorine, and monochloramine). For free
chlorine measurements, which often require continuous pH correction a second input for a pH
sensor is available. Two 4-20mA analog outputs are standard on HART units. The 1066 is compatible with SMART pH sensors from Rosemount. HART digital communications is standard and
F
OUNDATION
Communication with the 1066 is through:
Local keypad interface
475 HART
HART protocol version 7
FOUNDATION fieldbus
AMS (Asset Management Solutions) Aware
SMART Wireless THUM™Adapter
TABLE 2-3. Ordering Information
®
fieldbus digital communication is offered as an option.
®
and FO
UNDATION
fieldbus Communicator
Description
1066 pH/ORP, Conductivity, Chlorine, Oxygen, and Ozone 2-Wire Transmitter
Measurement
PpH/ORP
CContacting Conductivity
TToroidal Conductivity
CLChlorine
DODissolved Oxygen
OZOzone
Communication
HTHART® Digital Communication Superimposed on 4-20mA Output
Section 2: Description and SpecificationsReference Manual
March 202000809-0100-3166
12Specifications
Reference ManualSection 3: Installation
00809-0100-3166March 2020
Section 3: Installation
3.1
3.2
Unpacking and inspection
Inspect the shipping container. If it is damaged, contact the shipper immediately for instructions.
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.
Installation – General Information
1. Although the transmitter is suitable for outdoor use, installation is direct sunlight or in areas
of extreme temperatures is not recommended unless a sunshield is used.
2. Install the transmitter in an area where vibration and electromagnetic and radio frequency
interference are minimized or absent.
3. Keep the transmitter and sensor wiring at least one foot from high voltage conductors. Be
sure there is easy access to the transmitter.
4. The transmitter is suitable for panel, pipe, or surface mounting.
5. The transmitter case has six 1/2-inch (PG13.5) conduit openings. Use separate conduit
openings for the power/output cable, the sensor cable, and the other the sensor cable as
needed (pH input for free chlorine with continuous pH correction).
6. Use weathertight cable glands to keep moisture out to the transmitter. If conduit is used, plug
and seal the connections at the transmitter housing to prevent moisture from getting inside
the instrument.
3.3
Preparing Conduit Openings
There are six conduit openings in all configurations of 1066.
Conduit openings accept 1/2-inch conduit fittings or PG13.5 cable glands. To keep the case
watertight, block unused openings with Type 4X or IP66 conduit plugs.
To maintain ingress protection for outdoor use, seal unused conduit holes with suitable conduit
plugs.
NOTE: Use watertight fittings and hubs that comply with your requirements. Connect the conduit
hub to the conduit before attaching the fitting to the transmitter.
Electrical installation must be in accordance with the National Electrical Code (ANSI/NFPA-70) and/or any
The 1066 is easy to wire. All wiring connections are located on the main circuit board. The front
panel is hinged at the bottom. The panel swings down for easy access to the wiring locations.
Digital Communication
HART and FO
units support Bell 202 digital communications over analog 4-20mA current output 1.
UNDATION
fieldbus communications are available as ordering options for 1066. HART
Power Supply/Current Loop – 1066 - HT
Power Supply and Load Requirements
Refer to Figure 4-1. The supply voltage must be at least 12.7 Vdc at the transmitter terminals.. The
power supply must be able to cover the voltage drop on the cable as well as the load resistor (250 Ω
minimum) required for HART communications. The maximum power supply voltage is 42.0 Vdc.
For intrinsically safe installations, the maximum power supply voltage is 30.0 Vdc. The graph shows
load and power supply requirements. The upper line is the power supply voltage needed to provide
12.7 Vdc at the transmitter terminals for a 22 mA current. The lower line is the power supply volt-
age needed to provide 30 Vdc for a 22 mA current. The power supply must provide a surge current
during the first 80 milliseconds of startup. The maximum current is about 24 mA.
Wiring17
For digital communications, the load must be at least 250 ohms. To supply the 12.7 Vdc lift off
voltage at the transmitter, the power supply voltage must be at least 17.5 Vdc.
FIGURE 4-1. Load/Power Supply Requirements
Section 4: WiringReference Manual
March 202000809-0100-3166
4.2.2
Power Supply-Current Loop Wiring
Refer to Figure 4-2.
Run the power/signal wiring through the opening nearest TB-2.
For optimum EMI/RFI protection:
1. Use shielded power/signal cable and ground the shield at the power supply.
2. Use a metal cable gland and be sure the shield makes good electrical contact with the gland.
3. Use the metal backing plate when attaching the gland to transmitter enclosure. The
power/signal cable can also be enclosed in an earth-grounded metal conduit.
Do not run power supply/signal wiring in the same conduit or cable tray with loop power lines.
Keep power supply/signal wiring at least 6 ft (2 m) away from heavy electrical equipment.
FIGURE 4-2. HART Communications
18Wiring
OUTPUT 2
TB5TB3TB2
TB4TB1
+24V
GND
GND
+24V
THUM
ANODE
CATHODE
RTN
SNS
RTD IN
+V
-V
REF
SHLD
SENSOR WIRING
TB7
TB6
_
+
GND
SOL
SHLD
pH
(OUTPUT1)
LOOP PWR
4-20mA / -24VDC RETURN
4-20mA / +24VDC
INSTALL PLUGS IN ALL OTHER
OPENINGS AS NEEDED
INNER ENCLOSURE
HINGE SIDE OF FRON T PANEL
1
TB7
/OUTPUT 2 REQUIRES EXTERNAL DC POWER.
2
TB6/
THUM T ERMINAL IS USED ONLY FOR
WIRELESS THUM ADA PT OR INSTALLATIONS
.
1
2
1066 HART CIRCUIT BO ARD
(pH/CL/DO/OZ)
ASS Y 24406-xx
HINGED PANEL
DW G NO.
40106613
Reference ManualSection 4: Wiring
00809-0100-3166March 2020
4.2.3Current Output wiring
The 1066 HART units are shipped with two 4-20mA current outputs. Current Output 1 is loop
power; it is the HART communications channel. Current output 2 is available to report process
temperature measured by the temperature sensing element or RTD within the sensor.
Wiring locations for the outputs are on the main board which is mounted on the hinged door of
the instrument. Wire the output leads to the correct position on the main board using the lead
markings (+/positive, -/negative) on the board.
Note:
Twisted pairs are required to minimize noise pickup in the 4-20 mA current outputs. For high
EMI/RFI environments, shielded sensor wire is required and recommended in all other installations.
FIGURE 4-3. 1066 HART Loop Power Wiring
Wiring19
Section 4: WiringReference Manual
March 202000809-0100-3166
4.3
4.3.1
Power Supply Wiring For 1066-FF
Power Supply Wiring
Run the power/signal wiring through the opening nearest TB2. Use shielded cable and ground the
shield at the power supply. To ground the transmitter, attach the shield to TB2-3.
Note: For optimum EMI/RFI immunity, the power supply/output cable should be shielded and
enclosed in an earth-grounded metal conduit. Do not run power supply/signal wiring in the same
conduit or cable tray with loop power lines. Keep power supply/signal wiring at least 6 ft (2 m)
away from heavy electrical equipment.
UNDATION
FO
Figure 4-4 shows a 1066PFF being used to measure and control pH and chlorine levels in drinking
water. The figure also shows three ways in which Fieldbus communication can be used to read
process variables and configure the transmitter.
FIGURE 4-4. Configuring 1066P Transmitter with FOUNDATION fieldbus