Measures evaporation residue in jet/turbine aviation fuels and gasolines 
Conforms to ASTM D 381, ISO 6246, EN 5, IP 131
Three test stations
Choice air or steam evaporation
Aluminum heating block with electronic heat control
Integral steam super heater
Includes beaker, shielded thermometer and precision pressure gauge

Herzog's Gum Test Apparatus measures evaporation residue in aviation fuels, motor gasolines and other volatile distillates according to standard test procedures. Available in two version, Catalog 915 uses air evaporation, while Catalog 917 uses either air or steam jet evaporation. Both are capable of testing three 100 ml samples simultaneously. Results indicate the likelihood of induction system deposits and potential sticking of intake valves.

The Herzog Gum Test Apparatus consists of an aluminum block with ducts for air or steam flow. Sample beakers are placed in wells within the block and hot air or steam is blown across the samples, causing rapid evaporation of volatile constituents. The beaker's weight is then compared to its empty weight; the difference is existent gum.

Block temperature is factory set for a temperature of approximately 162ºC in air evaporation units and 232ºC in steam evaporation units. The temperature of the evaporation air or steam is controlled by pressure regulation. Catalog HGT 915 and 917 includes an integral steam super heater as well as a built-in switch, which permits changeover from air to steam evaporation when required.

The Gum Test Apparatus is designed to operate on 230 VAC power; an optional transformer is available for 115 VAC operation.

Easy & reliable digital consistency measurement
of petroleum products and more

ASTM D5, D1321, D937, D217, D1403; DIN 52010, 13911, 51579, 51580, 51804 Part 2;
IP 49, 50, 167, 179, 301; ISO 2137; DAB 10-V.5.8.1; SMS 658; AOSC Cc16-60; many others

·         Microprocessor-controlled release & stop of plunger

·         Electronic depth gauge

·         Limit indicator for Go/No-Go testing

·         Highly durable construction with water resistant display

·         Illuminator and magnification lens simplify needle placement

·         Results display on easy-to-read screen

·         Data logging software available as option

·         Wide variety of test cones and applicable methods

The HPT 738 Digital Penetrometer from Walter Herzog GmbH provides reliable, digitally controlled consistency measurements for rugged yet user-friendly operation. Release and stopping of the plunger rod are controlled with microprocessor precision, while digital timing and an electronic depth gauge further ensure highly repeatable penetration measurements.

The unit includes a stable metal platform base with features to easily facilitate straight and true sample penetration. A flex-mounted light and magnification lens illuminate the sample surface for accurate needle placement, while coarse and fine hand wheels simplify adjustments and enable the operator to quickly move the head up and out of the way for sample removal and replacement.

Herzog penetrometers are widely used for consistency determinations of highly viscous or solid materials including petroleum products, foods, cosmetics, construction materials, and other materials according to ASTM methods or custom test procedures. A wide variety of precision-machined accessories are offered.

Determines softening point of 
bitumen, tar, pitch, tall oil rosins and polymeric resins quickly, accurately... automatically!

·         Preprogrammed test procedures: ASTM D 36, E 28; IP 58; ISO 4625; DIN 52011; NFT 66008; EN 1427

·         Stores up to 20 permanent and user-defined test programs

·         Easy-to-use touch screen testing, programming, diagnostics, calibration

·         Integral results database stores up to 300 measurements; incorporates statistical calculation and graphing capacity

·         Built-in, user programmable air cooling system

·         Stand-alone or networked operation; permits single-station control over up to two additional Herzog Ring & Ball testers

The HRB 754 Ring & Ball Tester automatically determines softening point via standard test methods. All you do is insert the sample in the instrument, input the sample ID, select a pre-programmed test method, and press Start.

In addition to performing standard softening point tests, this versatile analyzer is easily programmed with your own customized test protocols. Test selection and other operational commands are entered via the instrument's easy-to-use touch screen display. The system even includes on-screen help to guide you through operational procedures.

Digital display of salt content in user units...eliminates sensitive adjustments and interpolation from log graphical curves

·         ASTM D 3230 measurement

·         Working lower detection limit of 0.2 ptb

·         Multi-calibration capacity with NEW HLIS32-SC software

·         Safe, low voltage design with cell isolated from electronics to reduce hazards from solvent spillage

·         User settings for high & low alarms

·         RS-232 and analog output

·         Compact design conserves valuable bench space

Elevated salt concentrations in crude oil may result in higher corrosion rates of refining units. Salt content measurement is made to determine if desalting of crude oil is required or to test the effectiveness of the desalting process.

Herzog's SC 960 Salt-in-Crude Analyzer automatically measures salt content, applying a low level excitation voltage and measuring conductivity. It eliminates necessity to work with a high voltage cell. There is no need for the reading of an analog milliamp gauge and interpolation of the final value from a log log plot. The Herzog SC 960 digitally displays the salt content in user selected units (i.e. pounds NaCl per 1000 bbl (ptb) of crude oil).

PC-based Calibrations
Initial and periodic calibrations are performed using new HLIS32-SC software by simply connecting the instrument to your PC via serial link. HLIS32 software allows collection of new calibration data, editing of existing data and generation of the calibration tables used by the SC 960. This user friendly instrument can allow up to two calibration tables to be downloaded to the analyzer at a time, and allows the user to select among these two active tables from the analyzer itself while testing. The PC is only required for calibration and not for normal operation of the analyzers. With dual-calibration capacity, samples can be analyzed using full range calibration or, for increased sensitivity, calculated using a reduced range curve.