Conductivity/TDS Monitor/Controllers 756-757-758-759 models

Guaranteed Accuracy and Reliability

Field Proven Electronics
The unique circuitry of the 750 Series II Conductivity Monitor/controllers guarantees accurate and reliable measurements. Drift-free performance is assured by "field proven" electronics, including automatic DC offset compensation and highly accurate drive voltage. Since temperature compensation is at the heart of accurate water measurement, all Myron L® Monitor/controllers feature a highly refined and precise TC circuit. This feature perfectly matches the water temperature coefficient as it changes. All models corrected to 25°C. The TC may be disabled to conform with USP requirements.

Built-in electronic calibration allows for fast quality checks without standard solutions. (Note: for maximum system accuracy standard solutions are recommended). A push-to-test button makes setpoint checks easy, while the internal alarm set discourages unauthorized adjustments.

Standard on all controller models is a heavy-duty 10 amp output relay, operating on either increasing or decreasing readings. Bright green/red LEDs indicate above or below setpoint readings. All 750 Series II models feature an IP65/ NEMA 4X water resistant and corrosionproof rated enclosure. Compact in size at 152 x 122 mm/6 x 4.8 in., they are suitable for panel, bench or surface mounting.

Additional options include a 3 Sensor Input Switch and/or a 3 Range Switch and a Remote Alarm™ model RA.

Features

• 34 Conductivity/TDS ranges: 0- 1 microsiemens/ppm to 0-200
• millisiemens/ppt
• Choice of 3 1/2 digit display or analog meter
• Automatic temperature compensation to 25°C
• Isolated 0-10 VDC Recorder Output standard
• IP65/NEMA 4X water resistant and corrosion proof enclosure
• Built-in electronic calibration
• Single set point/alarm standard
• Adjustable setpoint hysteresis
• Solid State 24 VDC Output
• 10 amp relay operates on choice of increasing or decreasing reading
• LEDs show "above/below" Alarm/control status
• Push-to-test set point check
• Internal set point discourages unauthorized adjustment
• Selectable 115/230 VAC
• Reliable, easily installed sensors

Benefits

• Affordable
• Ease of Operation
• Low Maintenance
• Ensures Product Quality

750 Series II Sensor Specifications:

• Temperature Compensation: Integral thermistors provide automatic TC to 25ºC between 0-100ºC/32-212ºF.
• Pressure /Temperature Limits: CS51: 100 psi / 690 kPa @ 100°C/212°F. 250 psig @ 205°C, Models CS40 and CS41 sensors available on special order.
• Bushing: Modular Polypropylene threaded 3/4" NPT. 1/2" PVDF or 316 stainless steel fittings available as option.
• Cable: Shielded 10 ft./3 meters standard 25 and 100 ft./ 8 and 30 meter lengths available. 100 ft./30 meter is maximum recommended.
• Dimensions: CS51: Metal portion 30 L x 13 Dia. mm/ 1.2 L x .5 Dia. in.

Sensors — CS51LC, CS51 and CS52
These reliable sensors feature an integral temperature sensor to ensure accurate and rapid automatic temperature compensation. The sturdy polypropylene bushing is modular for easy inexpensive replacement. Several alternatives for the metal portion of the sensor are available, depending on the demands of the application.

• CS51LC sensors (0.1 constant) are used for 5 and below.
• CS51 sensors (1.0 constant) are used between 0-10 and 0-20,000.
• CS52 sensors (10.0 constant) are used above 20,000.
• Low cost, low temperature, low pressure sensors available upon request. See 750II Sensor Selection Guide.

Functional Specifications:

750 Series II Product Applications:

• Reverse Osmosis
• Process Control
• Seawater Desalination
• Waste Treatment
• Food Processing
• Plating
• Power Plants
• Laboratories
• Printing
• Aquaculture
• Agriculture
• Environmental Studies
• Medical
• Boilers (250 psi @ 205°C)
• Cooling Towers

CONDUCTIVITY SENSOR #CS51
For 750II & CTCII™ Conductivity/TDS Monitor/controllers

• Small size enables convenient installation and service.
• Dual O-ring seals used on all versions for high on-stream reliability.
• Plastic gland fitting allows removal and replacement without tools.

MODELS: CS51, CS51LC, CS51LS, and CS51R
BENEFITS

• Economic Value
• Small, Convenient Size
• 100 psi at 100°C
• General Purpose Use
• Field Replaceable

DESCRIPTION
Wetted materials of construction are 316 stainless steel and Teflon®**, with double O-ring seals at all points. The first EPR O-ring bears the brunt of process interface, allowing the second O-ring to maintain reliable sealing, free from chemical attack. An integral temperature element allows automatic compensation for maximum accuracy. Leads are 10 ft./3 meters standard.
Process connections are made via a bored through swage 3/4" NPT fitting as standard. This fitting may be installed into a line or tank, or may be reversed and connected to a standpipe for use in a submersion configuration.
The CS51 is ideal for general purpose use up to 20,000 μS/ppm.

SPECIFICATIONS

Sensor Constant:

CONDUCTIVITY SENSOR #CS52
For 750II Conductivity/TDS Monitor/controllers

• Very compact size for a high probe constant sensor.
• Dual O-ring seals used on all versions for high on-stream reliability.
• Thermowell for the temperature element assures rapid response.

MODEL: CS52
BENEFITS

• Economic Value
• Small, Convenient Size
• 100 psi at 95°C
• General Purpose Use
• Field Replaceable

This sensor has a small footprint for its high probe constant of 10.0. Its size and economical pricing make it ideal for use in various OEM applications, such as skid mount R.O. systems, water treatment units, chemical dilutions, and many more.

DESCRIPTION
Wetted materials of construction are 316 stainless steel and CPVC, with double EPR O-ring seals. The first O-ring is the only one to touch the process fluid, allowing the second O-ring to operate free from chemical attack. The thermowell containing the temperature sensing element in its tip is exposed directly to the stream, assuring rapid automatic compensation for maximum accuracy.
Process connections are 3/4" NPT for insertion, and the back portion is 3/4" stainless steel tubing, which can be gripped by a swage fitting for submersion applications. A Teflon®** insulator is available as an option to the standard CPVC.

SPECIFICATIONS

Sensor Constant:

See 750II Sensor Selection Guide.

††† Kynar® is a registered trademark of Atochem.

Limited Warranty
All Myron L® Monitor/controllers have a Two (2) Year Limited Warranty. pH Sensors have a Six (6) Month Limited Warranty. If any Monitor/controller fails to function normally, return the unit to the factory prepaid. If, in the opinion of the factory, failure was due to materials or workmanship, repair or replacement will be made without charge.
A reasonable service charge will be made for diagnosis or repairs due to normal wear, abuse or tampering. Warranty is limited to the repair or replacement of Monitor/controller only. The Myron L® Company assumes no other responsibility or liability.

Conductivity/TDS Range Notes:
* CS51LC Conductivity Sensor (0.1 constant) required for these ranges
** CS52 Series Conductivity Sensor (10.0 constant) required for these ranges
† Available in Digital models only
†† Available with 4 1/2 Digit Backlit LCD

Conductivity/TDS and Resistivity Accessories Notes:
* Does not fit into enclosure, must be mounted separately

Call or email for Special Order Sensor Options

• Models: 756II, 757II, 758II, 759II, -SC, -4A, -PA, -PAT, -35BL, -45BL, -TP, -TH, -PC, -24VA, -PTS, -SFP, -TPA, -HT, SCO, 4AO, 3SE, 3SO, 3REC, 3ROC, 3SREC, 3SROC, PAO, PATO, 35BLO, 45BLO, TPO, THO, TPC, PCO, SMP50, RA, VR, 024-1, CSC, CCATF, CCS, CS51LC, CS51, CS51LS, CS51R, CS52, -T, -25, -100, -PV, -HPSS & -SQC