A06_Specifications.pdf

Specifications

The control system shall be a capable of measuring system conductivity and temperature. The conductivity sensors shall be a contacting style available with automatic temperature compensation. Other optional sensors up to a maximum of 8 shall be a choice of pH, ORP, ISE, PTSA, free chlorine, total chlorine, chlorine dioxide, ozone, Peracetic acid, or hydrogen peroxide. A sensor specifically designed for Stabilized Bromine shall be available. Twelve digital inputs are available for sensors that shall include a flow switch, contacting water meter, paddlewheel flowmeter, chemical feed monitor, or other dry contact devices. Outputs shall include a maximum of 12 relays, and up to a maximum of sixteen optional 4-20 mA outputs.

Digital communications shall be via Ethernet. Optional BACnet and Modbus TCP shall be available. The controller shall be accessible via the Internet for configuring, data logging, and control of relay outputs. The USB port shall provide the ability to upgrade the software in the controller to the latest version, save all the set points from a controller onto a USB flash disk and import settings into another Intuition-9 controller and download datalog files to a USB flash disk. On-screen graphing of two analog signals and one digital input/relay state shall be available on the touchscreen display.

Control Module:

1. Enclosure: Polycarbonate Resin, NEMA 4X, lockable hinged door.

2. Power (model code dependent):

Relay Board Option 9: 100 to 240 VAC, 50 or 60 Hz, 20A maximum All other options: 100 to 240 VAC, 50 or 60 Hz, 15 A maximum

3. Inputs:

Sensor Input Signals (0, 1 or 2 depending on model code) Contacting Conductivity 0.01, 0.1, 1.0, or 10.0 cell constant OR Electrodeless Conductivity OR Disinfection OR Amplified pH, ORP or ISE Requires a pre-amplified signal. Walchem WEL or WDS series recommended.

±5VDC power available for external preamps.

Each sensor input card contains a temperature input Temperature 100 or 1000 ohm RTD, 10K or 100K Thermistor Analog (4-20 mA) Sensor Input (0 to 24 depending on model code) 2-wire loop-powered or self-powered transmitters supported 3 or 4 –wire transmitters supported Two to Six channels per board, depending on model Channel 1, 130 ohm input resistance Channel 2-6, 280 ohm input resistance All channels fully isolated, input and power Available Power One independent isolated 24 VDC ± 15% supply per channel

1.5 W maximum for each channel

Digital Input Signals (12 standard6):

State-Type Digital Inputs Electrical: Optically isolated and providing an electrically isolated 12 VDC power with a nominal 2.3mA current when the digital input switch is closed Typical response time: < 2 seconds Devices supported: Any isolated dry contact (i.e. relay, reed switch) Types: DI State Low Speed Counter-Type Digital Inputs Electrical: Optically isolated and providing an electrically isolated 12 VDC power with a nominal 2.3mA current when the digital input switch is closed 0-20 Hz, 25 msec minimum width Devices supported: Any device with isolated open drain, open collector, transistor or reed switch Types: Contacting Flowmeter, Flow Verify High Speed Counter-Type Digital Inputs Electrical: Optically isolated and providing an electrically isolated 12 VDC power with a nominal 2.3mA current when the digital input switch is closed, 0-500 Hz, 1.00 msec minimum width Devices supported: Any device with isolated open drain, open collector, transistor or reed switch Types: Paddlewheel Flowmeter

4. Outputs:

Powered mechanical relays (0 to 12 depending on model code):

Pre-powered on circuit board switching line voltage Two, three or four relays are fused together (depending on model code) as one group, total current for this group must not exceed 6A (resistive), 1/8 HP (93 W) Dry contact mechanical relays (0 to 12 depending on model code):

6 A (resistive), 1/8 HP (93 W) Dry contact relays are not fuse protected Pulse Outputs (0 to 12 depending on model code):

Opto-isolated, Solid State Relay 200mA, 40 VDC Max.

VLOWMAX = 0.05V @ 18 mA 4 - 20 mA (0 to 16 depending on model code):

Internally powered, 15 VDC, Fully isolated 600 Ohm max resistive load Resolution 0.0015% of span

5. Ethernet:

Accuracy ± 0.5% of reading 10/100 802.3-2005 Auto MDIX support Auto Negotiation

6. WiFi Radio Protocol: IEEE 802.11 b/g/n Security Protocols (Ad- Hoc Mode): WPA2-Personal Security Protocols (Infrastructure Mode): WPA/WPA2-Personal, WEP Certifications and Compliance: FCC, IC TELEC, CE/ETSI, RoHS, WiFi Certified

7. Software features:

Relay outputs may be set to a variety of control modes:

• On/Off set point control

• Time Proportional control

• Pulse Proportional control (when purchased with solid state opto outputs)

• Flow Proportional

• Dual set point

• Bleed or Feed based on a Water Contactor or Paddlewheel flow meter input

• Feed and Bleed

• Feed and Bleed with Lockout

• Feed as a percent of Bleed

• Feed as a percent of elapsed time

• Daily, Weekly, 2-week or 4-week Biocide timers with pre-bleed and postadd

• lockout of bleed

• Intermittent sampling for boilers with proportional blowdown, controlling

• on a trapped sample

• Always on unless interlocked

• Probe Wash timer

• Spike to alternate set point on timed basis

• Target PPM

• Flow Meter Ratio

• Volumetric Blending

• Disturbance Variable Control

• PPM Volume

• Lead/Lag Control

• Diagnostic Alarm triggered by:

o High or Low sensor reading o No Flow o Relay output timeout o Sensor error

Sixteen Virtual Inputs are configurable in the software, to either allow for calculations based on two real inputs, or to allow to compare values from two sensors to provide redundancy, or to be used as a disturbance variable, or to be a value obtained from another device via Modbus protocol.

Sixteen Virtual Outputs are configurable in the software, using most of the possible relay or analog output control algorithms, that may be used to interlock or activate actual control outputs.

Manual activation of the relays shall be easily accomplished via the touchscreen, or a PC. A maximum output on-time shall be available on the control relays to prevent runaway control.

Any relay may be reconfigured to any one of a number of control algorithms, responding to the signal from any input desired.

The optional analog inputs shall be configurable for fluorometers, level sensors, flowmeters, tank level, or any other type of transmitter, providing appropriate units of measure and scaling.

The digital inputs shall be configurable for level switches, flowmeters, flow switches, chemical feed monitors or generic interlock operation.

The optional analog outputs shall be configurable for retransmitting a sensor signal, for proportional control, for PID control, for flow proportional control, or for lead/lag control.

The controller set points may be entered by downloading them from one controller and uploading them into another controller.

Access to the controller shall be possible using Ethernet, locally or via the Internet, WiFi, or via the local touchscreen display, simultaneously if desired.

The standard Ethernet feature provides remote access to the controller’s programming via a PC connected directly, via a local area network, or via Walchem’s VTouch account management server. It also allows emailing of datalog files (in CSV format, compatible with spreadsheets like Excel) and alarms, to up to eight email addresses. The Modbus TCP and BACnet remote communications options allow communication with PC-based applications, HMI/SCADA programs, Building Energy Management systems, Distributed Control Systems (DCS), as well as stand-alone HMI devices.

No proprietary software shall be required on the user’s computer to communicate with the controller, or to view or change set points.

C. Sensors:

Contacting Conductivity

1. Operating principle: The conductivity sensor shall be driven with a low voltage AC signal, and the return signal voltage will vary with the conductivity of the intervening solution. The temperature sensor within this sensor compensates for the effect of temperature on the conductivity signal.

2. Materials of construction: 316 Stainless Steel, PEEK

3. Process connections: ¾” NPTF

4. Temperature range: 32-405 F, 0-207 C

5. Pressure range: 0-250 psi

6. Other materials and pressure sensors shall be made available.

Electrodeless Conductivity

1. Operating principle: The conductivity sensor shall be driven with a low voltage AC signal, which induces a current in the surrounding liquid which varies in intensity with the conductivity of the liquid, which is picked up by the sensor and transmitted to the controller. The temperature sensor within this sensor compensates for the effect of temperature on the conductivity signal.

2. Materials of construction: CPVC, FKM

3. Process connections: ¾” NPTF

4. Temperature range: 32-158 F, 0-70 C

5. Pressure range: 0-150 psi pH

1. Operating principle: The pH sensor shall consist of a replaceable cartridge containing a pH sensitive glass and silver/silver chloride reference. Voltage signals from these shall be measured against the solution ground, and the differential voltage measurement sent to the control module.

2. Materials of construction: Glass-Filled Polypropylene, CPVC, HDPE, FKM, Glass

3. Process connections: ¾” NPTF

4. Temperature range: 50-158 F, 10-70 C

5. Pressure range: 0-100 psi

6. Other materials and higher pressure sensors shall be made available.

ORP

1. Operating principle: The ORP sensor shall consist of a replaceable cartridge containing a platinum electrode and silver/silver chloride reference. Voltage signals from these shall be measured against the solution ground, and the differential voltage measurement sent to the control module.

2. Materials of construction: Glass-Filled Polypropylene, CPVC, HDPE, FKM, Glass, and Platinum.

3. Process connections: ¾” NPTF

4. Temperature range: 32-158 F, 0-70 C

5. Pressure range: 0-100 psi

6. Other materials and higher-pressure sensors shall be made available.

DISINFECTION

1. Operating principle: The oxidizer molecules diffuse through the membrane and in the acidic environment of the electrolyte fill solution, a redox reaction occurs at the electrodes in the sensor. The current generated by this reaction is converted to a robust voltage signal that is linear with the concentration of the oxidizer.

2. Materials of construction: Glass-Filled Polypropylene, PVC, Silicone rubber, polycarbonate, 316SS, PEEK.

3. Process connections: ¾” NPTF

4. Temperature range: 41-113 F, 5-45 C (typical)

5. Pressure range: 0-14.7 psi (0-1 atmosphere)

D. Controller and Sensor Performance

0.01 Cell Contacting Conductivity

Range: 0-300 μS/cm Resolution: 0.01 μS/cm, 0.0001 mS/cm, 0.001 mS/m, 0.0001 S/m, 0.01 ppm Accurac:y ± 1% of reading or 0.01 μS/cm, whichever is greater

0.1 Cell Contacting Conductivity

Range: 0-3,000 μS/cm Resolution: 0.1 μS/cm, 0.0001 mS/cm, 0.01 mS/m, 0.0001 S/m, 0.1 ppm Accuracy: ± 1% of reading or 0.1 μS/cm, whichever is greater

1.0 Cell Contacting Conductivity

Range: 0-30,000 μS/cm Resolution: 1 μS/cm, 0.001 mS/cm, 0.1 mS/m, 0.0001 S/m, 1 ppm Accuracy: ± 1% of reading or 1 μS/cm, whichever is greater

10.0 Cell Contacting Conductivity

Range: 0-300,000 μS/cm Resolution: 10 μS/cm, 0.01 mS/cm, 1 mS/m, 0.001 S/m, 10 ppm Accuracy: ± 1% of reading or 10 μS/cm, whichever is greater

Corrosion Range 0-2 mpy or mm/year 0-20 mpy or mm/year 0-200 mpy or mm/year

Resolution

0.001 mpy or mm/year

0.01 mpy or mm/year

0.1 mpy or mm/year pH ORP/ISE Range -2 to 16 pH units Resolution 0.01 pH units Accuracy ± 0.01% of reading Range -1500 to 1500 mV Resolution 0.1 mV Accuracy ± 1 mV

Disinfection Sensors Range (mV) -2000 to 1500 mV Range (ppm) 0-2 ppm to 0-20,000 ppm Resolution (mV) 0.1 mV Resolution (ppm) Varies with range and slope Accuracy (mV) ± 1 mV Accuracy (ppm) Varies with range and slope

Temperature Analog (4-20 mA) Range 23 to 500°F (-5 to 260°C) Range 0 to 22 mA Resolution 0.1°F (0.1°C) Resolution 0.01 mA Accuracy ± 1% of reading Accuracy ± 0.5% of reading

Electrodeless Conductivity

Ranges Resolution Accuracy 500-12,000 μS/cm 1 μS/cm, 0.01 mS/cm, 0.1 mS/m, 0.001

S/m, 1 ppm ± 1% of reading

3,000-40,000 μS/cm 1 μS/cm, 0.01 mS/cm, 0.1 mS/m, 0.001 S/m, 1 ppm

± 1% of reading

10,000-150,000 μS/cm 10 μS/cm, 0.1 mS/cm, 1 mS/m, 0.01 S/m, 10

± 1% of reading

50,000-500,000 μS/cm 10 μS/cm, 0.1 mS/cm, 1 mS/m, 0.01 S/m, 10 ppm

± 1% of reading

200,000-2,000,000 μS/cm 100 μS/cm, 0.1 mS/cm, 1 mS/m, 0.1 S/m, 100 ppm

± 1% of reading

E. Indication

1. Graphic User Interface

a. 7.0” TFT Color Display 1024x3 (RGB) x 600 pixels with capacitive touchscreen including gesture support shall indicate the process values the status of outputs and alarms, and provide for all settings and calibrations.

b. Two LED lamps shall indicate the alarm status and software operation status.

F. Equipment The boiler controller shall be a Walchem WBL Intuition-9 series.

Part 3. Operator Functions

3.1 Calibration

A. The sensor calibration shall be a one-point process calibration, a threepoint buffer calibration, a two-point buffer calibration, or a one-point buffer calibration.

B. All set points shall be set through the touchscreen, or via a PC connected either locally or remotely via Ethernet or WiFi.

C. Two levels of access codes shall be available to protect all set points and calibrations, while allowing the user to view any set point.

3.2 Control Module Function Details

A. Each control output shall be able to be set to any of the available control modes listed above.

B. All control relays shall have limit timers to prevent runaway control.

C. The controller shall be able to activate any relay with or interlock any relay output based on a digital input or based on another specific relay being active.

Part 4. Warranty

4.1 Terms

A. The manufacturer of the above specified equipment shall guarantee equipment of its manufacture, and bearing its identification to be free from defects in workmanship and material for a period of 24 months for electronics and 12 months for mechanical parts from date of delivery from the factory or authorized distributor under normal use and service and otherwise when such equipment is used in accordance with instructions furnished by the manufacturer and for the purposes disclosed in writing at the time of purchase, if any.

B. In the event a component fails to perform as specified and having been returned to the manufacturer transportation charges prepaid and is proven defective in service during the warranty period, the manufacturer shall repair or replace the defective part. Replaceable elastomeric parts and glass components are expendable and are not covered by any warranty.