K33700 Existent Gum Evaporation Bath & Data Acquisition Software

Test Method
Gum formed during fuel storage can deposit on induction system surfaces, intake valves, stems and guides. To test for gum content, a 50mL sample is evaporated in an aluminum block bath for a specified period under controlled conditions of temperature and flow of air (aviation and motor gasolines) or steam (aircraft turbine fuel).

Features and Benefits
• Conforming to ASTM D381 and related specifications

• Choice of three-unit and six-unit models

• Available with built-in steam superheater

• Microprocessor programmable high accuracy temperature control

• Built-in pressure regulators and air flowmeters


Click on the image to view a larger photo of the instrument.

K33700 Existent Gum Evaporation Bath
Evaporates aircraft turbine fuel and motor and aviation gasoline samples under controlled conditions in accordance with ASTM specifications. Consists of a high temperature evaporation bath with 100mL test beakers and, for aircraft turbine fuels, a steam generator and steam superheater.

Electrically heated baths for determining existent gum in aircraft turbine fuels by steam-jet evaporation and in motor and aviation gasolines by air-jet evaporation. Fully insulated, aluminum block design assures safe, efficient high temperature operation. Equipped with air/steam pressure regulator with gauge and a flowmeter for adjusting air flow per ASTM specifications. Stainless steel jets deliver air or steam flow to the test wells through removable brass conical adapters. Microprocessor PID control provides quick temperature stabilization without overshoot, and the bath is protected by an overtemperature control circuit that interrupts power should bath temperature exceed a programmed cut-off point. Dual LED displays provide actual and setpoint temperature values in °C/°F format. Communications software (RS232, etc.), ramp-to-set and other enhanced features are available as extra cost options. Contact your Koehler representative for information.

Model K33800 with Built-in Superheater–Six-unit bath with a built-in thermostatically controlled superheater which delivers dried steam to the bath inlet for steam-jet method testing of aircraft turbine fuels. Has digital-indicating solid state bath temperature control with digital setpoint and display.

Model K33700–Six-unit bath without built-in superheater. Controls are housed in a separate cabinet connected to the bath by multi-conductor cable.

Model K33780–Three-unit bath without built-in superheater. All controls are housed in the bath cabinet.

Specifications
Conforms to the specifications of: ASTM D381; IP 131; ISO 6246; DIN 51784; FTM 791-3302; NF M 07-004

Testing Capacity
K33800 and K33700: 6 sample beakers
K33780 and K33781: 3 sample beakers

Maximum Temperature
475°F (246°C)

Temperature Control Stability
±1°F (±0.5°C)

Bath Configuration
Machined aluminum block with multiple cartridge heaters

Heater Range
K33800 and K33700: 0-3000W
K33780 and K33781: 0-1500W

Superheater (Model K33800 only)
Superheating chamber and condensate trap constructed of stainless steel
Solid state thermoregulator (0-550°F) with heater range of 0-1500W

Electrical Requirements
K33700: 220-240V, 50/60Hz, Single Phase, 13.6A
K33800: 220-240V, 50/60Hz, Single Phase, 20.4A
K33780: 115V, 50/60Hz, Single Phase, 13.0A
K33781: 220-240V, 50/60Hz, Single Phase, 6.8A

Included Accessories
Conical Brass Adapters for air/steam jets

Dimensions lxwxh,in.(cm)
K33800: 32.5x20x20 (83x51x51)
K33780: 32.5x11x19 (83x28x48)
K33700: Bath: 28x20x16 (71x51x41) Control Cabinet: 9x8x6.5 (23x20x17)
Net Weight:
K33800: 230 lbs (104.3kg)
K33780: 85 lbs (38.6kg)
K33700: 203 lbs (92.1kg)

Shipping Information
K33800: Shipping Weight: 313 lbs (142kg)
Dimensions: 17.2 Cu. ft.
K33780: Shipping Weight: 140 lbs (63.5kg)
Dimensions: 8.3 Cu. ft.
K33700: Shipping Weight: 271 lbs (123kg)
Dimensions: 13.7 Cu. ft.

K33700-SFW Existent Gum Software
Existent Gum Software retrieves temperature data in real-time and performs data analysis for up to 6 samples at one time. The data analysis also includes accounting for the tare beaker as well as calculations for residue and gum content for both washed and unwashed gums. Direct communication with the Koehler analytical balance eliminates weighing errors by recording values directly from the balance with a simple click of the mouse. The sophisticated Windows®-based software package features an easy-to-navigate operation, a straightforward user interface, minimal draw on Windows® memory resources, automatic real-time data acquisition via RS232 connection, and a timer / stopwatch feature for general laboratory use. The "test intelligent" software simplifies the testing process by providing sequential test prompts for assisting the operator with each step of the test procedure. The active zoom, pan, and trace feature allows the ability to change axes and the magnification of any sector of the pressure or temperature graphs to view data in greater detail. The final test data is exported with graphs and test parameters either directly to Microsoft® Excel, in ASCII file format for use with LIMS or any other spreadsheet programs, or directly to a printer with a test report according to ISO guidelines. Test data is saved in a database format for determining test averages, standard deviations, and ASTM test repeatability for aviation turbine fuels, aviation gasolines, motor gasolines washed and unwashed. The software package requires no PC hardware installation and includes the software installation CD and computer connection cables.

Computer Requirements
Processor: Intel ® Pentium II or similar (minimum)
Memory (RAM): 256Mb or higher
Speed: 500 MHz or higher
Windows ® 2000 or higher
Disk Space: 15 Mb free space (minimum)
Communications Port: One USB Port
Other Software: Microsoft ® Excel (97 or above)
One or two RS232 ports for temperature controller

For a complete demonstration of the Existent Gum Software Package and its capabilities, please download a copy of the demo version (5.6MB file). After installing the demo software, you will be prompted to quickly register the demo with Koehler via email.

Click here to download the software demo.

Ordering Information
Catalog
Number
Product Description
Electrical Requirements
K33800
Existent Gum Evaporation Bath, 6-Unit with Superheater 220-240V 50/60Hz
K33700 Existent Gum Evaporation Bath, 6-Unit 220-240V 50/60Hz
K33780 Existent Gum Evaporation Bath, 3-Unit 115V 50/60Hz
K33781 Existent Gum Evaporation Bath, 3-Unit 220-240V 50/60Hz
K33700-SFW
Existent Gum Data Acquistion Software

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