HVM 472: Multirange Viscometer

Standard Test Methods:
ASTM D445 (IP 71 Section 1), ISO 3104, ASTM D446 per section 1.3, ISO 3015

Analytical principle:
Kinematic Viscosity by Glass Capillary (Atlantic Multirange Or Fast Run-Type)
Sample Volume: Standard: 18 ml
Fast Run: 4 ml

Sample Preheating:
For samples with Pour Point up to 70 °C (at 100 °C bath temperature) such as bunker oils, bitumen, and waxes.
Optional preheating stations with programmable temperature settings from +40° to +110 °C (68 – 230°F). Without IRIS Software program, all samples are preheated to the selected temperature and duration. With IRIS Software, each sample can be individually programmed to be preheated or not over a certain time.

Sample Induction:
Via integrated 26-position auto samplers (one per bath), with automatic sample drawing directly from vials — no external vacuum pumps required.

Cycle Time and Throughput:
25 -35 min per test (typical, incl. cleaning), 2 test runs in simultaneously (at same or two different temperature)

Capillaries:
Multi-range capillary tubes, with nominal range of 100-fold (typical flow times from 60 to 400 seconds) and 12 gradings. Optional fast run capillary tubes, with nominal range of 20-fold (typical flow times from 25 to 100 seconds).
The HVM472 can operate mix of standard Atlantic Multirange capillary tube and Fast Run tube simultaneously

Meniscus Detection/Timing:
By Thermistor (NTC): Applicable to nearly all types of clear samples, as well as high level carbon or stable emulsion (dark) samples. Repeatability better or equal to ASTM D445. Herzog NTC sensors are automatically calibrated and do not require an individual training.

Bath Temperature:
Stability: ±0.01°C (±0.03°C for test T°C above 100°C). Proportional heating control and high velocity bath media circulation. Resolution 0.001°C. , Factory pre-calibrated at +40°C and + 100°C temperature points

Bath Media: Silicone oil, 2 x 5 liters.

Bath Cabinet/Chassis:
All wetted materials are made of steel, baked epoxy resin coated: electromagnetic isolation, solvent resistant. The system incorporates brass parts and is not designed to handle corrosive samples or solvents that destroy brass. All glass baths with transparent plastic heat-touch protection.

Cleaning/Drying Mode:
Standard: Automated dual solvent system with user programmable configuration.

Optional: Two additional solvents.
Low solvent usage (10 ml per cycle avg; selectable from 0 – 9 cycles per solvent); gravity intake and discharge (no external vacuum pump required); built-in automatic detection of cleaning solvent availability; Kalrez® seals compatible with aggressive solvents, including acetone.

Viscosity Range
Standard Atlantic: 0.5 to 5000 cst (mm²/s) at 40°C (68°F); 0.5 – 2000 mm2/s at 100°C (212°F), Fast Run: 0,5 – 600 mm2/s at 40/100°C (68/212°F)
Temperature range: User programmable from 20 – 150°C (68 – 302 F)

Documentation:
Test Results Database
Stand-alone mode: local memory storage of up to 400 test results. The previous 400 test results are maintained in the local database by the “first in, first out” principle.
IRIS Software based mode: test results database only limited by the memory space of the PC hard disk.

Keyboard and Display:
Graphic LCD display for results, menus and status information reporting and tactile alphanumeric keyboard with password protection for menus navigation & data inputs (by single/multiple strokes of the keypad, similar in function to cellular phones).

Printer and PC:
Paper roll 40 column printer or any ASCII compatible inkjet printer for A4/letter format sheets.
PC required only when the IRIS Software program is used. Any Windows® compatible PC and printer can be used.

IRIS Software®:
Compatible with IRIS Software. Operates and links together Herzog automatic viscosity analyzers HVM472 with central measurement program and results storage/database management. All data collected/stored by IRIS Software automatically transmits via RS 232 to external LIMS. User may customize output format using preferred field delimiters. System PC can function as workstation on LAN and move/share data via file transfer or OLE with other Windows applications. (Such as MS Excel)

Voltage: 100V ± 10%, 115V ±10% and 230 VAC ±10%, selectable by clamping.

Frequency: 50 to 60 Hz

Power: 1350 W

Cooling water or external chiller:
External cooling through built in cooling coil required for operation at 20 –40 °C (68 – 104°F).
For low temperature bath (max. pressure 6 bar) via ∅ 11 mm nozzle for 5/16 inch hose; (not included in delivery) Coolant temperature shall be 10°C lower than desired bath temperature.
With the optional “Cooling Control System”, the cooling will automatically be reduce or shut off when a higher bath temperature is chosen or when the instrument is shut off. Note: Coolant temperature shall be 10°C lower than desired bath temperature.

Solvent supply: Via supplied ∅ 5mmTeflon® hose

Slop drain: Via ∅ 10 mm nozzle for 5/16-inch hose

Air exhaust: Via ∅ 32 mm nozzle for 1½ inch hose (not included in delivery) recommended air flow ~ 5 m3/h

Operating temperature: max. 10° to 35°C; recommended 15° to 25°C

Humidity: 80% relative humidity at 35°C

Storage temperature: -15 to +55°C

PHYSICAL SPECS
Dimensions (W x D x H): 49 x 75 x 126 cm (19.3 x 29.5 x 49.6 inch)
Weight: 80 kg (199 lbs.) without bath liquid

Calibration and Diagnostics:
Real time status display and control for all mechanical and electrical systems locally or with optional PC network.
HLIS features a comprehensive diagnostic program, which allows to check every key component and assembly, together with a self-correction sample temperature measuring system that automatically compensates for amplifier drifts. Temperature probe deviation can be corrected by 10 user-selected temperature offset points. The internal timing device can be checked by a verification menu. The HVM instruments can be calibrated with PAC standard CRM fluids

Bath Safety:
Bath over-temperature and -level protection. HVM471 Baths have hot surface protection provided by outer acrylic cover tube. A special slop sensor for the waste reservoir is available as an accessory in order to prevent the analyzer from waste reservoir over-filling (slop valve switch-off when the current measuring cycle is complete). An extra NIR meniscus detection prevents from sample flow in the valve system.