Nanotron Controllers

Introduction 
NanoTron microprocessor based controllers are designed to provide a wide range of control functions for recirculating water treatment systems. The controller is programmed through a front panel keypad and can be configured to provide a customized control system for your application. Your particular unit’s functions can be determined by comparing the units model number to the model numbering table listed below.

Model Numbering 
NanoTron units have several base system control functions and unit optional features. Your unit may be supplied with one or more of the features depending on it's mode of operation.​

Nanotron Dual Timer (F2 Model)

Description

• Two totalizing water meter inputs that can be configured for contacting head or hall effect meter inputs.

• Two drum level inputs that can be set to disable the relay outputs.

• Two mechanical relay outputs with normally open and normally closed contacts that can be configured for powered or dry contact relay operation (see page 4 of the manual).

• A “force on” timer that allows for manual activation of the relays for a user defined amount of time.

Each of the 2 timers in a NanoTron-F2 can be individually programmed as one of the following types:

Pulse Timer – Accepts dry contact pulses from a water meter (supplied separately). It can accumulate 1-9999 pulses to activate the timer to run from 0-99 minutes, 59 seconds in minutes and seconds. Timer will store up to 5 additional activations during an individual run time.

Recycle Timer – Provides a user defined “off” cycle in HH:MM and a user defined “on” cycle in MM: SS that is repeated constantly.

28-Day Timer - 28-day feed timers, typically used for biocide feed are based on a 28-day cycle with two independent programmable feed cycles allowing for feed on selectable days and weeks.

Batch Timer - Timer activated by the Force On/Off key for a user defined run time.

Utility - Relay is on as long as it is not a flow or drum alarm.

After Timer 1 - This allows Timer 2 to run after Timer 1.

Downloads:

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Nanotron Conductivity Model

Description
NanoTron C/B units are designed to automate conductivity control and / or the addition of various chemicals or activate other devices via a relay output.

Nano-C and Nano-B2 units include:
- One totalizing water meter input that can be configured for contacting head or hall effect meter inputs.
- One drum level input that can be set to disable the feed relay output.
- Two mechanical relay outputs with normally open and normally closed contacts that can be configured for powered or dry contact relay operation (see page 4 diagram).
- A “force on” timer that allows for manual activation of the relays for a user defined amount of time.

Conductivity Control (C & B) - Conductivity monitoring and control of Total Dissolved Solids (TDS) in a recirculating water systems in terms of electrical conductivity measured in MicroSiemens/cm. The conductivity scale can be selected from three ranges (low, mid and high) in the Configure menu (see page 13 of the manual). One selectable feed timer is also included (see timer description below).

Feed Timer - One user selectable timer that can be individually programmed as one of the following types:
Pulse Timer – Accepts dry contact pulses from a water meter (supplied separately). It can accumulate 1-9999 pulses to activate the timer to run from 0-99 minutes, 59 seconds in minutes and seconds. Timer will store up to 5 additional activations during an individual run time.
Recycle Timer – Provides a user defined “off” cycle in HH:MM and a user defined “on” cycle in MM:SS that is repeated constantly.
28-Day Timer - 28-day feed timers, typically used for biocide feed are based on a 28-day cycle with two independent programmable feed cycles allowing for feed on selectable days and weeks.
Batch Timer - Timer activated by the Force On/Off key for a user defined run time.
Reminder Timer - Provides a 1-99 day cycle reminder alarm.
Post Bleed Timer - The relay is activated after a bleed cycle and runs for the set percentage of that bleed cycle. 
With Bleed Timer - Activates the relay output simultaneously with the bleed and limits the amount of time the relay output will be on during the bleed cycle. 

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Nanotron Corrosion Rate Monitor

Introduction

NANO-M controllers are microprocessor based menu driven units for monitoring corrosion rates in aqueous environments. All settings are entered into the controller through a simple front panel keypad which includes relay test keys and LED indicating lights.

Description

NANO-M units are designed to monitor the linear polarization resistance (LPR) between two metal tips. Relative corrosion rates are calculated by measuring polarization voltage and current. All units include:
- Set point relay control with differential, high and low alarm.
- Conductivity variable manual input.
- Scalable 4-20mA output of corrosion rate of the 00.00-99.99 mils per year reading.
- A “force on” timer that allows for manual activation of the relay for a user defined amount of time.

Corrosion Rate Measurement

The linear polarization rate (LPR) is a relative corrosion rates calculated by measuring polarization voltage and current between two metal coupons. The NANO-M converts LPR to an annual rate of metal loss assuming linear constants to display a corrosion rate in mils per year (mpy) where 1 mil =0.001 inch. NANO-M units should only be used in conductive fluids like cooling towers, chillers, boilers, waste water and potable water systems.

For more information detailing the LPR theory in measuring corrosion rates refer to ASTM and NACE publications and the literature listed below.

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Nanotron pH & ORP Control

Description

NanoTron units are designed to automate pH / ORP control and the addition of various chemicals or activate other devices via a relay output. Nano-P and Nano-R units include:
- One totalizing water meter input that can be configured for contacting head or hall effect meter inputs.
- One drum level input that can be set for one of the following: alarm display only, alarm display and force of relay 1, alarm display and force off relay 2 or alarm display and force of relay 1 & 2.
- Two mechanical relay outputs with normally open and normally closed contacts that can be configured for powered or dry contact relay operation (see page 4 diagram). Relay 1 is labeled “pH” or “ORP” and Relay 2 is labeled “Relay 2” if pigtails are provided.
- A “force on” timer that allows for manual activation of the relays for a user defined amount of time.

pH Control (P) - The pH function monitors and controls pH on a scale of 0-14 pH units. The unit can be configured for single or dual set point control. Relay 1 is controlled be the single pH set point with the following settings: Set Point (rising for acid feed or falling for caustic feed); Differential (the amount of reading change that must occur before the relay is turned off); Limit Timer (the relay is forced off if the limit time is met). For dual set point control to feed both an acid and a caustic the Relay 2 Set menu must be configured for Dual pH instead of a timer. This setting will add additional settings in the pH Set menu for the second set point. Relay 1 will operate off of the falling setpoint and Relay 2 off of the rising. The High, Low Alarm settings and limit timer are the same for single or dual pH set point control.

ORP Control (R) – The ORP function monitors and controls ORP on a scale of 0 to +1000 mV using relay 1.

Relay 2 Set – The second relay can be controlled by one of the following modes:
Set Point 2 for pH units, Alarms for P (not doing dual set point) or R units or one of the selectable timers below:

Pulse Timer – Accepts dry contact pulses from a water meter (supplied separately). It can accumulate1-9999 pulses to activate the timer to run from 0-99 minutes, 59 seconds. Timer will store up to 5 additional activations during an individual run time.
Recycle Timer – Provides a user defined “off” time in HH:MM and a user defined “on” cycle in MM:SS that is repeated constantly.
28-Day Timer – 28-day feed timers, typically used for biocide feed are based on a 28-day cycle with two independent programmable feed cycles allowing for feed on selectable days and weeks.
Utility – Relay on all of the time.

Downloads:

 

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Nanotron N (mA Input) Control

Description

NANO-N units are designed to display a mA input and transmit a mA and/or pulse output. It also can provide an automated control of chemical feeds and other external devices via two control relay outputs.

The pulse output can pace a metering pump or convert a mA flow rate into contact style water meter pulses (like used in a MegaTron). Follow the steps below to program the Pulse Out based on the mA range of the flow device using an example of 500 gpm as the max 20mA signal:

1. In the Configure menu set the Pulse output to ON
2. In the Configure menu define what the flow rate from the flow device is for: a. 4mA as 000.0 (this is the flow rate of the device with no flow) b. 20mA as 0500.0 (this is the flow rate of the device at maximum)
3. In the Pulse Output menu define:
    a. LoRate as 000.0 (this is the gpm flow rate at 4mA)
    b. HiRate as 0500.0 (this is the gpm flow rate at 20mA)
    c. HiMax as 0100 (this is the number of pulses out per minute it will produce at a 20mA)
4. Go to the water meter input menu of the controller you are sending the pulse output to and define the input
as 5 gallons per contact.

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