Atago 3532 In-line Propylene Glycol Concentration Monitor, CM-800α-PG, Propylene Glycol : 0.0 to 90.0% Measurement Range

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Simplicity at its best - Versatile Process Management 

The CM-800α-PG is specially designed for in-line concentration measurements of propylene glycol solutions used as coolants, brine, anti-freeze, and de-icing fluids. It also has a secondary scale for the freezing point.  

(Automatic Temperature Compensation according to the sample liquid)
Freezing point
Measurement RangePropylene Glycol. : 0.0 to 90.0%
Freezing point : -50 to 0゚C / -58 to 32゚F
Temperature : 5 to 100゚C / 41 to 212゚F
ResolutionPropylene Glycol. : 0.1%
Freezing point : 1゚C / 1゚F
Temperature : 1゚C / 1゚F
Measurement AccuracyPropylene Glycol. : ±0.4%
Freezing point : ±1゚C / ±1゚F
Temperature : ±1゚C / ±1゚F
Temperature compensation range5 to 100゚C
(Automatic Temperature Compensation)
Wetted parts temperature resistance-30 to 150゚C
Ambient Temperature5 to 40゚C
IndicationPropylene Glycol: -2.0 to 105.5%
Freezing point :-50 to 0゚C / -58 to 32゚F
Temperature : 0 to 130゚C / 32 to 266゚F
Light sourceLED (D-line approximation)
Temperature sensorThin film platinum sensor
Materials in contact with the solutionPrism : Sapphire
Prism stage : SUS316L
Prism pressure resistance0.98MPa(10kgf/cm2)
OutputRS-232C, DC 4 to 20mA
MaterialsPrism : Sapphire
Prism stage : SUS316L
Power SupplyDC24V
International Protection ClassIP67
Dust-tight and Protected against splashing water.
Included AccessoriesPower input cable (1m) [*1]
Dimensions & Weight16 x 17 x 11cm, 2.4kg
(Main Unit only)
Power consumption3VA

Call 01463 830401 For Any Assistance
  • In-line model can be incorporated into the piping of manufacturing plants, liquid mixing devices, and washing apparatuses for continuous liquid concentration measurement
  • Automatic temperature compensation (ATC) for immediate, accurate calibration readings, regardless of sample temperature

Propylene glycol (IUPAC name: propane-1,2-diol), according to the National Library of Medicine and Agency for Toxic Substances and Disease Registry, is a synthetic liquid substance that absorbs water.[4] It is labelled an organic compound in chemistry due to its carbon attributes. Its chemical formula is CH3CH(OH)CH2OH. It is a viscous, colourless liquid, which is nearly odourless but possesses a faintly sweet taste. Containing two alcohol groups, it is classed as a diol. It is miscible with a broad range of solvents, including water, acetone, and chloroform. In general, glycols are non-irritating, have very low volatility and very low toxicity.[5]

It is produced on a large scale primarily for the production of polymers. In the European Union, it has the E-number E1520 for food applications. For cosmetics and pharmacology, the number is E490. Propylene glycol is also present in propylene glycol alginate, which is known as E405. Propylene glycol is a compound which is generally recognized as safe (GRAS) by the U.S. Food and Drug Administration (FDA) under 21 CFR x184.1666 and is also approved by FDA for certain uses as an indirect food additive. Propylene glycol is approved and used as a vehicle for topical, oral and some intravenous pharmaceutical preparations in U.S. and in Europe.

Highly resistant to build-up 

The materials in contact with the solution are made out of durable SUS316L, and the sample stage has been made fully flat, resulting in a unit that's highly resistant to build-up.

Defective products will never slip through 

A variety of output methods means defective products will never slip through undetected. Recorder output (4-20mA) and RS-232C output can be set-up and linked with an external device for automatic control. 

Compatible with a wide range of temperatures 

Capable of measurement at temperatures between -15 to 160°C, meaning the unit is perfectly capable of handling CIP and SIP processes.

 α series Fitting Option

Connection systemDiameterProfile
IDF/ISO clamp union (ferrule)1S - 3S
IDF/ISO screw union (screw)1S - 3S
JIS Flange25A - 65A
IDF/ISO clamp union (ferrule)1S - 3S
IDF/ISO screw union (screw)1S - 3S
JIS Flange25A - 65A
Compression Fitting10mmΦ
Hose connector12mmΦ
    • SKU
    • Commodity Codes
  • Range
    Propylene Glycol : 0.0 to 90.0%
  • Accuracy
  • Type of Communication
    RS-232C Output Terminal, DC4 to 20mA Output
  • Installation Type
  • Use
    Propylene Glycol
  • International Protection Class
  • Manufacturer
    Atago Co Ltd
  • Country of Origin