Emerson PN-51-T56 User manual

Emerson
Brand
Emerson
Model
PN-51-T56
Category
Weather stations
Type
User manual
Clarity II T56 Turbidimeter
T56 Instruction Manual
P
N 51-T56
May 2012
Instruction Manual Clarity II T56
PN-51-T56 May 2012
This page left blank intentionally
Clarity II T56 Turbidimeter
ESSENTIAL INSTRUCTIONS-Read this page before proceeding!
Your instrument purchase from Rosemount Analytical, Inc. 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 may be impaired.
• 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.
• 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 and pressure 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 equipment doors must be closed and protective covers must be in place unless qualified personnel are performing
maintenance.
WARNING
RIS
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conduit pl
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•
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•
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esp
onsibility of the user.
Instruction Manual Clarity II T56
PN-51-T56 May 2012
This product generates, uses, and can radiate radio frequency energy and thus can cause radio communication interference.
Improper installation, or operation, may increase such interference. As temporarily permitted by regulation, this unit has not
been tested for compliance within the limits of Class A computing devices, pursuant to Subpart J of Part 15, of FCC Rules, which
are designed to provide reasonable protection against such interference. Operation of this equipment in a residential area may
cause interference, in which case the user at his own expense, will be required to take whatever measures may be required to
correct the interference.
CAUTION
This product is not intended for use in the light industrial, residential or commercial environments per the instrument’s certifi-
cation to EN50081-2.
CAUTION
Instruction Manual Clarity II T56
PN-51-T56 May 2012
This manual contains instructions for installation and operation of the Clarity II T56 Turbidimeter.
The following list provides notes concerning all revisions of this document.
Rev. Level Date Notes
A 5/12 This is the initial-launch version.
About This Document
Contents
Section 1: Description and Specifications
1
.1
F
eatures and Applications ......................................................................................1
1.2 Specifications – General .........................................................................................2
1.3 Ordering Information.............................................................................................3
Section 2: Installation
2.1 Unpacking and Inspection......................................................................................5
2.2 Installation.............................................................................................................5
2.2.1 General Information.................................................................................5
2.2 Installation – Debubbler Assembly .........................................................................8
2.3 Installation – Sensor.............................................................................................10
Section: 3 Wiring
3.1 General ...............................................................................................................11
3.1.1 Removable connectors and signal input boards......................................11
3.1.2 Signal input boards ...............................................................................11
3.1.3 Digital communication boards...............................................................11
3.1.4 Alarm relays ..........................................................................................11
3.2 Preparing Conduit Openings ................................................................................12
3.3 Preparing Sensor Cable ........................................................................................12
3.4 Power, Output, and Sensor Connections ..............................................................12
3.4.1 Power wiring..........................................................................................12
3.4.2 Current output wiring ...........................................................................12
3.4.3 Alarm relay wiring .................................................................................12
3.4.4 Sensor wiring to signal boards................................................................13
3.4.5 Sensor ...................................................................................................13
Section 4: Display and Operation
4.1 User Interface.......................................................................................................15
4.2 Instrument Keypad ..............................................................................................15
4.3 Main Display ........................................................................................................16
4.4 Menu System .......................................................................................................17
Section 5: Programming the Analyzer - Basics
5.1 General ...............................................................................................................19
5.2 Configuring and Ranging the Current Outputs .....................................................19
5.3 Setting a Security Code........................................................................................19
5.4 Security Access ....................................................................................................20
5.5 Using Hold ...........................................................................................................20
5.6 Resetting Factory Default Settings .......................................................................20
5.7 Programming Alarm Relays..................................................................................21
i
Instruction Manual Clarity II T56
PN-51-T56 May 2012
ii
Table of Contents cont’d
Section 6: Programming - Turbidity
6.1 Programming Measurements – Introduction .......................................................23
6.2 Turbidity Measurement Programming .................................................................23
Section 7: Calibration
7.1 Calibration – Introduction ...................................................................................25
7.2 Turbidity ..............................................................................................................25
7.2.1 Slope Calibration – Turbidity.......................................................................25
7.2.2 Standardize Calibration – Turbidity.............................................................26
7.2.3 Grab Calibration – Turbidity.......................................................................26
Section 8: Maintenance
8.1 Overview .............................................................................................................27
8.2 Sensor..................................................................................................................27
8.2.1 Cleaning the sensor ...................................................................................27
8.2.2 Replacing the lamp/LED board....................................................................27
8.3 Debubbler and Measuring Chamber.....................................................................29
8.3.1 Cleaning the sensor ...................................................................................29
8.3.2 Cleaning the orifice ....................................................................................29
8.4 List of Replacement Parts .....................................................................................30
Section 9: Return of Material
9.1 General................................................................................................................31
9.2 Warranty Repair ..................................................................................................31
9.3 Non-Warranty Repair ..........................................................................................31
Appendix ..........................................................................................................................32
Section 1: Description and Specifications
1.1 Features and Applications
COMPLETE SYSTEM includes single or dual input analyzer, sensor(s), and debubbler assembly
CHOOSE U.S. EPA METHOD 180.1 or ISO METHOD 7027 compliant sensors
RANGE 0-200 NTU
RESOLUTION 0.001 NTU
FULL FEATURED ANALYZER with fully scalable analog outputs and fully programmable alarms
with interval timers
INTUITIVE, USER-FRIENDLY MENU in seven languages makes setup and calibration easy
The Clarity II turbidimeter is intended for the determination of turbidity in water. Low stray
light, high stability, efficient bubble rejection, and a display resolution of 0.001 NTU make
Clarity II ideal for monitoring the turbidity of filtered drinking water. The Clarity II turbidimeter
can be used in applications other than drinking water treatment. Examples are monitoring
wastewater discharges, condensate returns, and clarifiers.
Both USEPA 180.1 and ISO 7027-compliant sensors are available. USEPA 180.1 sensors use a
visible light source. ISO 7027 sensors use a near infrared LED. For regulatory monitoring in the
United States, USEPA 180.1 sensors must be used. Regulatory agencies in other countries may
have different requirements.
The Clarity II turbidimeter consists of an analyzer, which accepts either one or two sensors, the
sensors themselves, and a debubbler/measuring chamber and cable for each sensor. The cable
plugs into the sensor and the analyzer, making setup fast and easy. Sensors can be located as
far as 50 ft (15.2 m) away from the analyzer.
The Clarity II turbidimeter incorporates the popular and easy to use 56 analyzer. Menu flows
and prompts are so intuitive that a manual is practically not needed. Analog outputs are fully
scalable. Alarms are fully programmable for high/low logic and dead band. To simplify
programming, the analyzer automatically detects whether an EPA 180.1 or ISO 7027 sensor is
being used.
Clarity II is available in an optional configuration in which the analyzer, sensor(s), and debub-
bling flow cell(s) are mounted on a single back plate. The sensor cables are pre-wired to the
analyzer, so setup is exceptionally fast and easy. All the user does is mount the unit on a wall,
bring in power and sample, and provide a drain. To order this option, consult the factory.
Description and Specifications 1
Instruction Manual Clarity II T56
PN-51-T56 May 2012
1.2 Specifications - General
Case: Polycarbonate. NEMA 4X/CSA 4, IP66.
NOTE:
To ensure a NEMA seal, tighten all four front panel screws to 6 in-lbs of torque.
Dimensions: 6.2 x 6.2 x 5.2 in. (157 x 157 x 132mm)
Conduit openings: Accepts (6) PG13.5 or 1/2 in. conduit fittings
Display: Large 3.75 x 2.2 in. (95.3 x 55.9mm) high resolution color LCD displays large process
variables and user-definable display of diagnostic parameters. Calibration, programming and
information screens display clear, easy-to-read characters. The color display is back-lit and back-
lighting intensity is user adjustable. Measurement character height: (.5") 13mm. Main display
can be customized to meet user requirements.
Ambient temperature and humidity: For Turbidity only: 0 to 55°C (32 to 131°F). RH 5 to 95%
(non-condensing).
NOTE:
The analyzer is operable from -5 to 55°C (-23 to 131°F) with some degradation in display
response or performance. Above 60°C, the following components will progressively and auto-
matically shut down: display, USB communications port, current outputs, alarm relays, main
circuit board.
Always remove USB memory device at ambient temp above 60°C. Do not access USB port if
combustible atmosphere is present.
Storage temperature: -20 to 60°C, (-4 to 140°F)
Power: Code -02: 20 to 30 VDC. 20 W
Code –03: 85 to 264 VAC, 47.5 to 65.0 Hz, 20 W
Real time clock back-up: 24 hours.
Hazardous Location Approvals:
Class I, Division 2, Groups A, B, C, & D
Class Il, Division 2, Groups E, F, & G
Class Ill T4A Tamb= 50°C
Evaluated to the ANSI/UL Standards. 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
Class I, Division 2, Groups A, B, C, & D
Class Il & lll, Division 2, Groups E, F, & G
T4A Tamb= 50°C Enclosure Type 4X
WARNING
2 Description and Specifications
Instruction Manual Clarity II T56
PN-51-T56 May 2012
Ordinary Locations:
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.)
RFI/EMI: – EN-61326
LVD: – EN-61010-1
Input: One or two isolated sensor inputs. Measurement choices of pH/ORP, resistivity/conductivity/
TDS, % concentration, ratio conductivity, total and free chlorine, monochloramine, dissolved
oxygen, dissolved ozone, turbidity, pulse flow, temperature and raw 4-20mA input. For
contacting conductivity measurements, temperature element must be a Pt1000 RTD. For
other measurements (except ORP, flow and turbidity), use either a PT100 RTD, PT1000 RTD, or
22k NTC (D.O. only).
Outputs: Four 4-20 mA or 0-20 mA isolated current outputs. Fully scalable. Max Load: 550 Ohms.
Output 1 superimposes the HART digital signal. Outputs can be programmed for PID control.
Output dampening can be enabled with time constants from 0 to 999 seconds. HART digital
communications transmitted via current output 1 is standard on all units (option code –HT).
Alarms: Four alarm relays for process measurement(s) or temperature. Any relay can be
programmed for any measurement, timer, TPC or fault alarm operation, instead of a process
alarm. When selected, a fault alarm will activate the relay when a sensor or analyzer fault occurs.
Each relay can be configured independently. Alarm logic (high or low activation or USP*) and
deadband are user-programmable.
*USP alarm can be programmed to activate when the conductivity is within a user-selectable percentage of the limit.
conductivity/resistivity measurement only)
Relays: Form C, SPDT, epoxy sealed
Inductive load: 1/8 HP motor (max.), 115/240 VAC
Terminal Connections Rating:
Power connector (-02 24VDC power supply and -03 85-264VAC power supply): 24-12 AWG
wire size.
Signal board terminal blocks: 26-16 AWG wire size.
Current output connectors: 26-16 AWG wire size.
Alarm relay terminal blocks: 24-12 AWG wire size.
Weight/Shipping Weight: (rounded up to nearest lb or nearest 0.5 kg): 3 lbs/4 lbs (1.5 kg/2.0 kg)
Description and Specifications 3
Instruction Manual Clarity II T56
PN-51-T56 May 2012
Maximum Relay Current
Power Input Resistive
28 VDC 5.0 A 5.0 A
115 VAC 5.0 A 5.0 A
230 VAC 5.0 A 5.0 A
LISTED
4 Description and Specifications
Instruction Manual Clarity II T56
PN-51-T56 May 2012
T56 Turbidity System Components
C
ode
S
ensor Type
01 EPA Sensor
02 ISO Sensor
40 EPA Sensor (Second Sensor Option)
41 ISO Sensor (Second Sensor Option)
Code Measuring Chamber
10 Debubbler Flow Chamber
60 Two Debubbler Flow Chambers
Code Sensor Cable
20 20' (6.1 m)
21 50' (15.2 m)
23 One 20' (6.1 m), One 50' (15.2 m)
50 Two 20' (6.1 m)
51 Two 50' (15.2 m)
Code Instrument
30 Single Input (56-03-27-38-HT)
31 Dual Input (56-03-27-37-HT)
Code Optional
71 Calibration Cup (recommended for calibration)
1.3 Ordering Information
The Clarity II is a complete system for the determination of turbidity in water. It consists of an
a
nalyzer and one or two sensors with a debubbler/measuring chamber assembly and cable for each
sensor. A calibration cup is available as an option. Because a sensor cannot be calibrated without a
calibration cup, at least one cup must be ordered. Calibration standard (formazin or polymer
spheres) must be ordered as a separate item.
Accessories
Part # Description
23554-00 Cable Gland Kit for Model 54e, XMT, 1055, 1056, Quantity 5
23820-00 Pipe/Wall Mounting Bracket for Models 1056, 1057, 5081, 6081, and XMT
23820-01 2” Pipe Mounting Bracket, Stainless Steel
9240048-00 S.S. Tag (specify marking)
24103-00 Flowmeter kit, includes valved rotameter and fittings
24101-00 Calibration cup
8-0108-0002-EPA Turbidity sensor EPA 180.1 compliant
8-0108-0003-ISO Turbidity sensor ISO 7027 compliant
1-0901-0009-EPA Replacement Lamp, EPA
1-0901-0010-ISO Replacement Lamp, ISO
24097-00 Sensor cable, turbidity, 20'
24098-00 Sensor cable, turbidity, 50'
24138-00 3' Turbidity Sensor Cable for Clarity II
24170-00 Molded debubbler with integral flow chamber
9550145 O-ring for sensor, external, fits molded debubbler
9550322 O-ring for upper and lower debubbler caps
Calibration Standards
Part # Description
060-761855 Premixed 4000 NTU Formazin calibration Kit
905-761854 Replacement solution for 4000 NTU premixed Kit
Ordering Example With Codes: T56 -01 -10 -20 -30
Instruction Manual Clarity II T56
PN-51-T56 May 2012
Section 2.0 – Installation
2.1 Unpacking and Inspection
The Clarity II Turbidimeter is a complete system for the determination of turbidity in drinking water.
The system consists of the analyzer, sensor(s), cable(s), and flow chamber/debubbler(s). Consult the
table to verify that you have received the parts for the option you ordered.
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, pipe, or surface mounting. Refer to the table below.
Installation 5
Item Model/part number
Single Input Turbidity Analyzer with HART 56-03-27-38-HT
Dual Input Turbidity Analyzer with HART 56-03-27-37-HT
Sensor-EPA standard 8-0108-0002-EPA
Sensor-ISO standard 8-0108-0003-ISO
Cable-3 ft (0.9 m) 24138-00
Cable-20 ft (6.1 m) 24097-00
Cable-50 ft (15.2 m) 24098-00
Calibration cup 24101-00
Molded chamber/debubbler 24170-00
RISK OF ELECTRICAL SHOCK
Electrical installation must be in accordance with the National Electrical Code
(ANSI/NFPA-70) and/or any other applicable national or local codes.
Type of Mounting Figure
Panel 2-1
Wall and Pipe 2-2
WARNING
6 Installation
Instruction Manual Clarity II T56
PN-51-T56 May 2012
Fig. 2-1 T56 Panel Mounting Installation dimensions
PANEL SUPPLIED BY OTHERS
MAXIMUM THICKNESS
.375 IN (9.52 mm)
PANEL MOUNT GASKET
BOTTOM VIEW
FRONT VIEW
SIDE VIEW
PANEL CUT-OUT
6.20
157.5
6.17
1
56.8
5
.18
131.4
1
.27
32.2
5.45
138.4
5.45
138.4
6.01
152.7
1.62
41.2
3.00
76.1
5.18
131.4
4X MOUNTING
BRACKETS
A
ND SCREWS
PROVIDED WITH
I
NSTRUMENT
O
.86
21.8
4X
CONDUIT OPENINGS
R
.06
1.5
MAXIMUM
PANEL MOUNT
Installation 7
Instruction Manual Clarity II T56
PN-51-T56 May 2012
F
ig. 2-2 T56 Pipe and Wall Mounting Installation dimensions
NOTES: UNLESS OTHERWISE SPECIFIED
L
C
FRONT PANEL
2 INCH PIPE
MOUNT
BRACKET
2X SET U-BOLTS
FOR 2" PIPE IN
KIT PN 23820-00
1 VERTICAL PIPE MOUNTING SHOWN. FOR HORIZONTAL
PIPE, ROTATE BRACKET AND U-BOLTS 90°.
BOTTOM VIEW
FRONT VIEW
SIDE VIEW
SIDE VIEW
6.50
1
65.1
5
.32
135.3
6.64
168.8
4
.00
1
01.6
6.20
157.5
6.17
1
56.8
7.37
187.2
4X COVER SCREW
WALL / SURFACE MOUNT
6.50
165.1
5.18
131.4
2.81
71.4
4.28
108.7
1.78
45.1
3.14
79.8
9.41
239.1
1.47
37.3
PIPE MOUNT
1
2" PIPE SUPPLIED
BY CUSTOMER
DO NOT OPERATE OR ENERGIZE INSTRUMENT WITH
CASE OPEN.
WALL / SURFACE MOUNT
Instruction Manual Clarity II T56
PN-51-T56 May 2012
8 Ordering Information
2.3 Installation – Debubbler Assembly
See Figure 2-3 for installation.
Connect the sample line to the inlet fitting. The fitting accepts 1/4-inch OD tubing. See Section
2.6 for recommended installation of the sample port.
Attach a piece of 3/8 inch ID soft tubing to the drain fitting. The debubbler must drain to atmos-
phere.
NOTE:
During operation, the debubbler is under pressure. A 0.040 inch (1 mm) orifice in the
outlet provides the pressure. Back pressure helps prevent outgassing, which can lead to
bubbles accumulating on the sensor face resulting in erroneous readings. DO NOT
EXCEED 30 psig (308 kPa abs) inlet pressure.
The amount of pressure in the debubbler can be estimated from the flow rate. See Table 2-1.
To control and monitor sample flow, a valved rotameter with fittings is available (PN 24103-00).
Attach the rotameter to the debubbler outlet. The rotameter can also be used to increase back
pressure on the debubbler if additional pressure is needed to prevent outgassing.
Before removing the sensor, be absolutely certain that the process pressure
is reduced to 0 psig and the process temperature is lowered to a safe level!
WARNING
TABLE 2-1. Approximate debubbler pressure as a
function of flow (0.040 inch outlet orifice)
mL/min kPa abs
100 110
200 120
300 140
400 160
500 190
600 240
700 280
800 340
gph psig
21
43
68
8 14
10 21
11 26
12 31
––
Installation 9
Instruction Manual Clarity II T56
PN-51-T56 May 2012
F
ig. 2-3 Debubbler and Flow Chamber
10
Instruction Manual Clarity II T56
PN-51-T56 May 2012
2.4 Installation – Sensor
Unscrew the nut on the side of the debubbler. Insert the sensor in the mouth of the measuring
chamber. Be sure the pin on the debubbler lines up with the hole in the sensor. Replace the nut.
Remove the protective cap from the sensor and screw the cable onto the receptacle. The plug and
receptacle are keyed for proper alignment.
The sensor is rated to IP65 when properly connected to the cable. To prevent possible water
damage to the connector contacts, be sure the cable receptacle and the connector on the back of
the sensor are dry when connecting or disconnecting the cable.
Fig. 2-4 Sensor
Section 3.0 Wiring
3.1 General
The T56 is easy to wire. It includes removable connectors and slide-out signal input boards. The
front panel is hinged at the bottom. The panel swings down for easy access to the wiring loca-
tions.
3.1.1. Removable connectors and signal input boards
The T56 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 T56 has three slots for placement of up to two signal input boards and
one communication board
3.1.2. Signal input boards
Slots 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:
For the purpose of replacing factory-installed signal input boards, Rosemount Analytical Inc. is
the sole supplier.
3.1.3. Digital communication boards
HART digital communications is standard on the T56. A Profibus DP communication board is
available as an option for the T56 communication with a host. HART communications supports
Bell 202 digital communications over an analog 4-20mA current output. Profibus DP is an open
communications protocol which operates over a dedicated digital line to the host.
3.1.4 Alarm relays
Four alarm relays are supplied with the switching power supply (85 to 264VAC, -03 order code)
and the 24VDC power supply (20-30VDC, -02 order code). All relays can be used 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 as an interval
timer, typically used to activate pumps or control valves. As process alarms, alarm logic (high or
low activation 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.
Slot 1-Left Slot 2 – Center Slot 3 – Right
Profi board Signal Board 1 Signal Board 2
Wiring 11
Instruction Manual Clarity II T56
PN-51-T56 May 2012
3.2 Preparing Conduit Openings
There are six conduit openings in all configurations of T56. (Note that four of the openings will
b
e fitted with plugs upon shipment.)
Conduit openings accept 1/2-inch conduit fittings or PG13.5 cable glands. To keep the case water-
tight, block unused openings with NEMA 4X or IP65 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 analyzer.
3.3 Preparing Sensor Cable
The T56 is intended for use with all Rosemount Analytical sensors. Refer to the sensor
installation instructions for details on preparing sensor cables.
3.4 Power, Output, and Sensor Connections
3.4.1 Power wiring
Two Power Supplies are offered for the T56:
a. 24VDC (20 – 30V) Power Supply (-02 ordering code)
b. 85 – 265 VAC Switching Power Supply (-03 ordering code)
AC mains leads and 24VDC 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.
The grounding plate is connected to the earth terminal of the -03 (85-265VAC) power supply.
The green colored screws on the grounding plate are intended for connection to some sensors
to minimize radio frequency interference. The green screws are not intended to be used for
safety purposes.
3.4.2 Current output wiring
All instruments are shipped with four 4-20mA current outputs. 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. Male mating connectors are provided with each unit.
3.4.3 Alarm relay wiring
Four alarm relays are supplied with the switching power supply (85 to 265VAC, -03 order code)
and the 24VDC power supply (20-30VDC, -02 order code). Wire the relay leads on each of the
independent relays to the correct position on the power supply board using the printed lead
markings (NO/Normally Open, NC/Normally Closed, or Com/Common) on the board.
12 Wiring
Instruction Manual Clarity II T56
PN-51-T56 May 2012
3.4.4 Sensor wiring to signal boards
Plug the pre-terminated sensor cable connector directly into the turbidity signal board mating
connector.
3.4.5 Sensor
The sensor cable is pre-wired to a plug that inserts into a receiving socket on the signal board.
See Figures 3-1. The cable also passes through a strain relief fitting. To install the cable:
1. Remove the wrenching nut from the strain relief fitting.
2. Insert the plug through the hole in the bottom of the enclosure nearest the sensor socket.
Seat the fitting in the hole.
3. Slide the wrenching nut over the cable plug and screw it onto the fitting.
4. Loosen the cable nut so the cable slides easily.
5. Insert the plug into the appropriate receptacle. To remove the plug, squeeze the release
clip and pull straight out.
6. Adjust the cable slack in the enclosure and tighten the cable nut. Be sure to allow sufficient
slack to avoid placing stress on the cable and connections.
7. Plug the cable into the back of the sensor. The sensor is rated to IP65 when properly
connected to the cable. To prevent possible water damage to the connector contacts, be
sure the cable receptacle and the connector on the back of the sensor are dry when
connecting or disconnecting the cable.
8. Place the sensor in either the measuring chamber or the calibration cup. The sensor must
be in a dark place when power is first applied to the analyzer.
NOTE:
If “S1 Warning” appears, check sensor cable connection and confirm sample water
flow at debubbler drain outlet.
Wiring 13
Instruction Manual Clarity II T56
PN-51-T56 May 2012
RISK OF ELECTRICAL SHOCK
Electrical installation must be in accordance with the National Electrical Code
(ANSI/NFPA-70) and/or any other applicable national or local codes.
WARNING
14
Instruction Manual Clarity II T56
PN-51-T56 May 2012
IMPORTANT NOTE:
When using EPA/incandescent sensors (PN 8-0108-0002-EPA):
• DO NOT power up the instrument without the sensor connected
• DO NOT disconnect and reconnect a sensor while an analyzer is powered
If this is inconvenient or cannot be avoided:
1. Cycle power to the instrument after connecting the sensor or...
2. Perform a Slope Calibration or Standard Calibration routine after connecting the
sensor.
Following these guidelines will extend the life of the incandescent lamp and avoid
premature warnings and faults due to reduced lamp life.
F
ig. 3-1 Turbidity signal board with plug-in Sensor connection
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Emerson PN-51-T56 User manual

Emerson
Brand
Emerson
Model
PN-51-T56
Category
Weather stations
Type
User manual
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