|
Features
·
Guaranteed Longest Lasting
Sensors Available with performance guarantee*
·
Sensors are compatible with most
existing pH/ORP Meters, Transmitters & Analyzers**
·
Application Specific Engineering
results in optimum Lifetime & Performance***
·
Integrated Temperature
Compensation, Preamplifiers & Solution Ground Elements
·
Solid State Reference System offers superior resistance to Fouling
& Dehydration
·
Applications such as Acid/Fluoride,
Hi-Temp, Saturated Sodium and Sulfide Resistant are available as standard
options
·
Custom Applications are available,
often at no additional charge
·
Most Installation Styles are
Supported Including: Immersion, Twist Lock, Valve Retractable
& Sanitary
·
Available in a wide range of plastics,
from inexpensive CPVC & PVC to thermally & chemically resilient RYTON®
thermoplastic
·
High Pressure Applications up to
100 psi for Valve Retractable & 150 psi for Inline Installations can be
supported for continuous use
·
Operating Temperatures from -30
to +150 ºC (-22 to +302 ºF) can be supported
for continuous use
|
PRODUCT
FOCUS # 2
Replacement pH & ORP Sensors for Myron L Company
pH & ORP Transmitters, Monitors & Controllers
Competitively Priced High
Performance Solid-State pH & ORP Sensors that can retrofit almost any
existing Myron L Company pH/ORP Transmitter and Controller
Virtually
maintenance-free, solid-state conductive polymer reference system minimizes
cleaning requirements, and allows for aggressive chemical and mechanical
cleaning
Thick-wall, break-resistant,
high performance 8 millimeter MUGG pH glass elements are nearly impossible to
break during normal process operation, cleaning and calibration
Flat-wall pH elementsoffer excellent “maintenance free” operation for slurry solutions
Multiple sensorbody configurations allows sensors to retrofit to nearly any installation
Embedded MyronLcompatible temperature compensation elements & high impedance CMOS
operational amplifiers (preamplifiers) allow connection to almost any MyronL
pH/ORP transmitter or controller
The Problem
A company wanted to
modernize its pH measurement equipment to use long lasting solid-state pH
sensors for environmental pH & ORP measurement applications for agriculture, water and wastewater but they had a broad install base of older Myron L pH transmitter
that required a particular type of pH sensors that was not readily available
from most suppliers except the OEM manufacturer (in this case Myron L). They had a wide array of pH & ORP
monitors and controllers from the MyronL 720 Series II meters including the
721II, 722II, 723II & 724II for pH and the 726II, 727II, 728II and 729II
for ORP. Although these older analog pH
analyzers, transmitters and controllers worked well in many cases, the pH
sensors had to be replaced and cleaned frequently and did not enjoy the
success that one would expect in typical water and wastewater treatment applications.
The customer used a wide array of MyronL pH & ORP sensors that needed to
find suitable modern pH & ORP electrode replacements including P72S, P72D, P72LC, P72F, P74S, P74D, P74LC,
P74F ½” MNPT and ¾” MNPT pH sensors and the O72S, O72D, O72LC, O72F, O74S,
O74D, O74LC, O74F ½” MNPT and ¾” MNPT ORP sensors.
These single and double
junction pH electrodes use the traditional type of porous reference gel
technology that can be quickly depleted by high flow rates and temperatures
and fouled with contaminants. These pH
probes and ORP probes use an special type of integrated temperature sensor
and preamplifier that make it difficult for customers to find suitable retrofit
replacement sensors. ASTI has extensive experience retrofitting
a wide range of Myron L pH Monitors & Controllers such as 720 Series
II. In addition, the older type Myron L
pH and ORP electrodes cannot be stored dry for any prolonged period of time
as the porous reference element will dry out and not recuperate with simple
reconditioning. The customer desired
to not lose pH sensors or ORP sensors due to accidental dehydration (left
stored dry in storage or process) or due to improper handling (sensitive to
breakage with small lab-grade pH and ORP glass element).
The Solution
The specific color-coding
for the Myron L type pH and ORP sensors is also used by direct replacement and
retrofit pH and ORP sensors. ASTI
adheres to this existing wiring schematic so that any retrofit pH sensors
quoted will serve as a DIRECT REPLACEMENT for the existing sensors (just wire
it up per the normal MyronL schematic for your meter).
|
Color
Coding
|
Black
|
White
|
Red
|
Green
|
Shield
|
Integrated, sealed,
“maintenance free” solid state pH and ORP sensors that could retrofit to all
of the existing Myron L pH and ORP Monitors & Controllers were required. Flat pH elements were made available for
process were build-up was problematic (Model 2312 replacing P72F and 74F). The non-porous conductive polymer solid
state reference double junction (triple junction available) reduced the
cleaning requirements as compared to the P72S, P72D and P72LC pH sensors and
the P74S, P74D and P74LC ORP sensors and also made the sensors more resilient
to occasional periods of dehydration.
The customer was able to use strong (half-dilute) hydrochloric acid to
remove any deposits and thus minimized breakage by reducing the frequency of
mechanical cleaning. Service lifetime
improved considerably and maintenance was reduced, with little change in the
unit price of the individual sensors.
The result was the ability to reduce operational costs considerably
without the expense and inconvenience of changing transmitters.
The Typical pH Sensor Used:
Model: PNZ
2012-MYRONL-25-TL pH Sensor Compatible with most Myron L pH
Meters
Description:
¾”- ¾” MNPT Immersion CPVC Bodied Low Impedance solid state pH Sensor with
integrated Myron L Compatible Temperature Element & integrated Myron L
compatible preamplifier; 25 feet of cable; tinned lead wires only to connect
directly to most Myron L meter.
The Typical ORP Sensor Used:
Model: PN
2812-MYRONL-10-TL ORP Sensor Compatible with most Myron L ORP Meters
Description:
¾”- ¾” MNPT Immersion CPVC Bodied solid state ORP Sensor with integrated
Myron L Compatible Temperature Element & integrated Myron L compatible
preamplifier; 10 feet of cable; tinned lead wires only to connect directly to
most Myron L meters
- Available in CPVC & RYTON materials of
construction
- Proprietary solid-state conductive polymer double
(or triple) junction reference system
- Support for cable lengths up to 300 feet
between sensor and meter (custom cable of any length from 1 foot to 300
feet are available as our sensors are built to order)
- Support for temperatures up to 100 degree
Celsius and 100 psig pressure rating with high temperature option
- Support for working in strong acid, strong base,
most organics and organic solvents, chlorine and other strong chemical
reagent environments
|
