Automatic PMCC Flash Point Tester - AutoFlash-93(V2.0)

Automatic PMCC Flash Point Tester – AutoFlash-93(V2.0)

The AutoFlash-93 is a fully automated Pensky-Martens closed-cup flash point analyzer built for accuracy-critical petroleum testing environments. Conforming to ASTM D93 (Procedures A, B, and C), ISO 2719, IP-34, and IS 1448 (P-21), it determines flash points across a 40°C to 360°C range — or 60°C to 190°C for biodiesel — without requiring constant operator supervision. With an 8.4″ touchscreen, integrated barometric pressure correction, programmable ramp rates from 0.5 to 14°C/min, and multiple safety interlocks, it handles everything from distillate fuels and lubricating oils to residual fuel oils and bio-diesel blends. Manufactured in India by Acute Instruments, the AutoFlash-93 is deployed in quality control labs, refineries, and testing facilities that cannot afford measurement errors or workflow delays.

Why testing labs prefer the AutoFlash-93

Zero-drift temperature accuracy

PT100 Class A sensor with auto-calibration before every run — no external calibration device needed.

Hands-off ignition control

DC motor-controlled swing arm with user-selectable electric or gas igniter. Dipping interval adjustable from 0.5 to 5°C.

Rapid cooling between runs

Integrated centrifugal blower (56.5 CFM) cuts down time between tests compared to passive cooling systems.

Unknown sample capability

Search mode determines flash point for fully uncharacterized samples without requiring an expected flash point entry.

Built-in pressure correction

Onboard barometric sensor (700–1100 hPa) automatically corrects flash point readings to standard pressure — no manual lookups.

Designed for Indian lab conditions

Operates stably at ambient temperatures up to 35°C and 80% RH — common in Indian industrial and R&D settings.

Standards & Methods
- Conforms to ASTM D93 Procedures A, B, and C — covers distillate fuels, residual oils, lubricants, and biodiesel in a single instrument
- Also supports ISO 2719, IP-34, IS 1448 (P-21), user-defined methods, rapid heating mode, and unknown sample search mode
Temperature & Heating
- Wide temperature range: 40°C to 360°C for petroleum products; 60°C to 190°C for biodiesel (FAME)
- Programmable heating rate from 0.5 to 14°C/min via stepper-motor-controlled 450W band heater
- Rapid heating mode accelerates the test up to a temperature just below the expected flash point, then switches to the method-specified ramp — reduces total test time on high-flash-point samples
- Automatic temperature calibration performed before every test run — no external calibration device required
Ignition System
- Software-selectable electric or gas igniter — switch between ignition sources without any hardware change
- Three-step electric igniter brightness adjustment for optimal flash detection across different sample volatility levels
- DC motor-controlled ignition arm with adjustable dip interval: 0.5°C to 5°C
Stirring & Sample Handling
- Stepper motor-controlled stirring with user-programmable speed from 20 to 300 RPM
- Permanently fixed cup lid integrates stirrer, sample temperature sensor (PT100 Class A), flash detector, and igniter as a single assembly — no manual lid handling during testing
- Automatic DC motor-controlled swing arm movement — fully hands-off operation after test start
Measurement & Detection
- Sample temperature measured by PT100 Class A sensor (SS sheath, 0–400°C) for high accuracy throughout the test range
- Bath temperature monitored by PT100 Class A disk-type sensor (0–500°C)
- Flash detection via thermocouple-based thermal sensing
- Built-in barometric pressure sensor (700–1100 hPa) with automatic pressure correction applied to every result — no manual calculation needed
Cooling
- Integrated centrifugal blower (56.5 CFM, 35W) for active cooling between test runs — reduces cycle time in high-throughput labs
Interface & Connectivity
- Standalone 8.4″ touchscreen with embedded Windows-based software — operates without an external PC
- Simple three-step operation: select procedure → enter expected flash point → press start
- Methods and results stored within the instrument; export as PDF or print via optional onboard printer
- USB, RS-232, and optional LAN/Ethernet connectivity for LIMS integration
- Audible beep signals test cycle completion
Safety Interlocks
- Automatic power cut-off with warning buzzer on fire detection by thermal sensor
- Pre-run sensor diagnostics — test blocked if bath or sample temperature sensor is found defective
- Flash detector continuity check before every run
- Electric igniter blow-off detection
- Test cover presence detection — instrument will not start with cover unseated
- Programmable upper temperature stop; hard ceiling at 400°C
Build & Operation
- Compact bench footprint: 410 mm (W) × 420 mm (D) × 330 mm (H), 16 kg
- Operates at ambient temperatures of 10–35°C and up to 80% relative humidity at 35°C
- Power supply: 230V, 50Hz, 1000W
- Manufactured in India by Acute Instruments

Procedure A — Distillate fuels and homogeneous liquids: Diesel, kerosene, heating oils, aviation turbine fuels, new lubricating oils, and any homogeneous petroleum product with predictable surface behavior under stirring.
Procedure B — Residual and viscous products: Residual fuel oils, cutback residuals, used lubricating oils, petroleum-solid mixtures, and liquids that form surface films or are too viscous for uniform heating under Procedure A conditions.
Procedure C — Biodiesel and FAME blends: Pure biodiesel (B100) and biodiesel-diesel blends in the flash point range 60°C to 190°C. Essential for compliance with EN 14214 and BIS quality requirements for biodiesel supply chains.

Specification	Details
Test methods	ASTM D93 A/B/C, ISO 2719, IP-34, IS 1448 P-21, User-defined, Rapid heating, Unknown search
Temperature range	40°C to 360°C (petroleum); 60°C to 190°C (biodiesel)
Sample temperature sensor	PT100 Class A, SS sheath, 0–400°C
Bath temperature sensor	PT100 Class A, disk type, 0–500°C
Heating rate	0.5 to 14°C/min (programmable)
Stirring speed	20 to 300 RPM (stepper motor, programmable)
Ignition source	Electric or gas igniter, software-selectable; 3-step brightness control
Flash detection	Thermocouple-based thermal detection
Cooling system	Centrifugal blower, 56.5 CFM, 35W
Barometric sensor	Built-in, 700–1100 hPa (500–800 mmHg), auto-correction
User interface	8.4″ touchscreen, Windows-based software, optional printer
Heater	Band type, 450W @ 230VAC
Power supply	230V, 50Hz, 1000W
Dimensions	410 mm (W) × 420 mm (D) × 330 mm (H)
Weight	16 kg
Operating environment	10–35°C ambient, ≤80% RH at 35°C

Frequently Asked Questions

What is the difference between ASTM D93 Procedure A, B, and C?

Procedure A covers distillate fuels, new lubricating oils, and homogeneous petroleum liquids. Procedure B applies to residual fuel oils, used lubricating oils, viscous mixtures, and liquids that form surface films. Procedure C is specifically for biodiesel (FAME) in the 60°C to 190°C range. The AutoFlash-93 supports all three within a single instrument.

Does the AutoFlash-93 require an external pressure gauge for barometric correction?

No. The instrument includes a built-in barometric pressure sensor (700–1100 hPa range) and automatically applies pressure correction to every flash point result. No manual input or external device is required.

Can the AutoFlash-93 test a sample with an unknown flash point?

Yes. The search mode allows the instrument to determine the flash point of completely uncharacterized samples. You do not need to enter an expected flash point value — the instrument runs a structured search protocol to locate the flash point automatically.

What ignition sources does the AutoFlash-93 support?

The instrument supports both electric and gas igniters, selectable through software. The electric igniter has a three-step brightness adjustment. The dipping interval is user-adjustable from 0.5°C to 5°C. Both igniters are interchangeable field replacements.

Is the AutoFlash-93 suitable for biodiesel quality testing in India?

Yes. Procedure C on the AutoFlash-93 is designed specifically for biodiesel and FAME blends, covering the 60°C to 190°C range. It conforms to ASTM D93 C and IS 1448 P-21, which aligns with BIS quality standards applicable to biodiesel blending and supply compliance in India.