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Vapour pressure directly affects the handling and performance of liquid petroleum and LPG products. Consequently, regulators strictly control automotive gasoline vapour pressure to reduce emissions.
To ensure compliance, manufacturers use constant-temperature water baths to determine Reid Vapour Pressure. In operation, the bath immerses the vapour pressure apparatus at ASTM-specified depths.
First, the system complies with ASTM D323, D1267, and related standards. In addition, users may install the unit as either free-standing or flush-mounted.
At the core of the system, a programmable microprocessor delivers high-accuracy temperature control. Specifically, the bath maintains temperature within ±0.2 °F precision.
Moreover, PID control rapidly stabilises temperature without overshoot. For added safety, an overtemperature circuit automatically cuts power if limits are exceeded.
Meanwhile, dual LED displays clearly indicate actual and setpoint temperatures in °C or °F. Optionally, RS232 communication and ramp-to-set capability further enhance functionality.
Structurally, the bath features double-wall construction with fibreglass-insulated stainless steel. Additionally, a 1-inch flange supports flush-mount benchtop installation.
Internally, built-in holders suspend test cylinders at the required immersion depth. Finally, an integrated overflow standpipe and drain maintain the proper bath level.
| Conforms to: | ASTM D323, D1267; GPA 2140; IP 69, 161; ISO 3007, 4256; DIN 51616, 51754; Federal Test Method TM 791-1201; NF M 07-007, 41-010 |
| Capacity: | 1 to 4 vapour pressure apparatus, one-opening or two-opening type |
| Temperature Control Stability: | ±0.2°F (±0.1°C) |
| Maximum Temperature: | 212°F (100°C) |
| Bath Medium: | 13.7gal (51.9L) water |
| Electrical Requirements: | 115V 50/60Hz, Single Phase, 18.8A |
| 220-240V 50/60Hz, Single Phase, 9.4A | |
| Dimensions – l x w x h, in. (cm): | 15 x 15 x 36 (38.1 x 38.1 x 91.5) |
| Net Weight: | 67 lbs (30.4kg) |
| Shipping Weight: | 105 lbs (47.7kg) |
| Dimensions: | 14 Cu. ft. |
| Model Specific Electrical | |
| K11450 | Reid Vapour Pressure Bath, 4-Unit115V 50/60Hz |
| K11459 | Reid Vapour Pressure Bath, 4-Unit220-240V 50/60Hz |
| 250-000-18F | ASTM 18F Thermometer – Range: 94 to 108°F |
| 250-000-18C | ASTM 18C Thermometer – Range: 34 to 42°C |
| 250-000-65F | ASTM 65F Thermometer – Range: 122 to 176°F |
| 250-000-65C | ASTM 65C Thermometer – Range: 50 to 80°C |
| K11810 | Transfer Connection – Consists of a threaded brass cup, a delivery tube, and a sampling tube. Use for removing liquid from the sample container in accordance with ASTM specifications. |
| 371-000-002 | Mercury Manometer – Graduated in cm (1mm div.) and inches (0.1″ div.). For checking the pressure gauge reading up to 15psi. |
| K112B-1-0-12 | Manometer Adapter – Attaches to the pressure gauge for checking with a mercury manometer. |
| AS568-210 | O-Ring Seal – For coupling between air and gas chambers on K11500 and K11201 vapour pressure bombs. |
| AS568-113 | O-ring Seal – For gauge and bleeder valve assembly connections on K11500 and K11201 vapour pressure bombs. |
| K40100 | Flexible Tubing – Sulphur-free plastic-lined tubing with 1/4″ stainless steel and aluminium connectors. For charging the LPG test cylinder. |
| When inquiring about NIST traceable certified thermometers, please refer to the catalogue number for the corresponding thermometer and replace the middle three zeros in the catalogue number with 004. Example: 251-000-01C ASTM 1C Thermometer would be 251-004-01C ASTM 1C Certified Thermometer. | |
