Myron L 729II - Manual (Page 11)

E. SENSORS
1. pH
720 series II pH Monitor/controllers use the P72 series sensors.
Its compact size allows mounting in a standard 1/2” or 3/4” MNPT
fitting or tee depending on model.
2. ORP
720 series II ORP Monitor/controllers use the O72 series
sensors. Its compact size allows mounting in a standard 1/2” or
3/4” MNPT fitting or tee depending on model.
For detailed descriptions of these and other sensors, see
pH/ORP Sensor Selection Guide.
3. SENSOR SPECIFICATIONS
BASIC pH Sensors
Single Junction 100PSI@50°C intermittent use.
P72S 1/2” MNPT
P74SR 3/4” MNPT
Double Junction (KNO3 gel) Environmental Applications
P72D 1/2” MNPT
P74DR 3/4” MNPT
Low Conductivity RO/DI Applications (DJ)
P72LC 1/2” MNPT
P74LCR 3/4” MNPT
HEAVY DUTY pH Sensors
FLAT TIP SELF-CLEANING
with Double Junction & High Temperature gel.
(For continuous use; 100°C @ 50PSI, 81°C @ 85PSI, and
76°C @ 100PSI).
P72F 1/2” MNPT
P74FR 3/4” MNPT
BASIC ORP Sensors
Single Junction 100PSI@50°C intermittent use.
O72S 1/2” MNPT
O74SR 3/4” MNPT
Double Junction (KNO3 gel) Environmental Applications
O72D 1/2” MNPT
O74DR 3/4” MNPT
Low Conductivity RO/DI Applications (DJ)
O72LC 1/2” MNPT
O74LCR 3/4” MNPT
HEAVY DUTY ORP Sensors
with Double Junction & High Temperature gel.
(For continuous use; 100°C @ 50PSI, 81°C @ 85PSI, and 76°C @
100PSI).
O72F 1/2” MNPT
O74FR 3/4” MNPT
4. SENSOR OPTIONS
-25 25’ Shielded Cable (Standard 5 wire sensor)*
-100 100’ Shielded Cable (Standard 5 wire sensor)*
TEMPERATURE COMPENSATION
pH Nernst Equation, Automatic to 25°C, between
32-212°F (0-100°C) May be disabled as
required.
ORP NONE
PRESSURE/TEMPERATURE LIMITS
See pH/ORP Sensor Selection Guide
CABLE
5 wire Shielded; 10’ (3 meters) standard; 25’ (7 meters)
and 100’ (30 meters) lengths also available.
Cable only: Part Number pHCRD-(length)
Example: pHCRD-300(90)
NOTE: 1000 ft/300 meter cable lengths have been tested with
no adverse affects on the readings. However, unusual conditions
may be experienced when extended long distances, i.e. power or
ground reversal. These conditions are beyond the control and
responsibility of the Myron L Company. A clean installation is
required. If you are experiencing errors, check the
Monitor/controller with a 10 ft/3 meter cable before contacting
your distributor or the Myron L Company.
DIMENSIONS
6 1/2” overall Typ.
Contact factory for data sheets for other models.
F. ORDERING INFORMATION
1. HOW TO ORDER MONITOR/CONTROLLERS
EXAMPLE:
MODEL OPTIONS
723II — SC - 4A - PA
Written as — 723II-SC-4A-PA
This is a Digital pH Monitor/controller with a Second Alarm/control,
a 4-20mA output and a Piezo electric alarm.
NOTE: Monitor model number does not include sensor. Please
specify sensor required when ordering.
2. HOW TO ORDER SENSORS
Add option to model number as in examples below. pH sensor
used in examples.
EXAMPLE:
MODEL OPTIONS
P72S — -100
Written as — P72S-100
The above is a basic 1/2” MNPT single junction pH sensor, with a
100 foot/30 meter cable.
ORP
EXAMPLE:
MODEL OPTIONS
O72F — -25
Written as — O72F-25
The above is a 1/2” MNPT Heavy Duty double junction ORP
sensor, with a 25 foot/8 meter cable.
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