All sensors, controls and jacketing in the 1266 Calorimeter are built into a single, compact cabinet to provide a self-contained operating unit consisting of:

• A temperature-controlled water jacket with a built-in circulating system and an electric heater.
• An 1108 oxygen bomb with an oval bucket which fits into the insulating water jacket.
• A built-in semi-automatic system for charging the bomb with oxygen.
• A high precision electronic thermometer.
• A keyboard for data entry and operation control.
• Bright, back-lit color liquid crystal display with menu driven programming and operating system.

Precise Electronic Thermometry

Temperatures are measured with a high precision electronic thermometer using a specially designed thermistor sensor sealed in a stainless steel probe which is fixed in the calorimeter cover. Measurements are taken with 0.0001° resolution over a 20° to 40° C working range, with all readings shown in Celsius.

Effective Thermal Jacketing

Outstanding thermal jacketing is provided by a circulating water system driven by a built-in, high capacity pump which maintains a continuous forced flow around the sides and bottom of the bucket chamber and through the cover as well. The jacket temperature is held constant for isoperibol operation and no water additions or waiting period are required at the end of a run. A sealed immersion heater and a built-in cooling coil, both operated by the calorimeter controller, provide precise jacket temperature control.

A Reliable Oxygen Bomb

The Parr 1108 Oxygen Bomb furnished with the calorimeter will safely burn samples liberating up to 8000 calories per charge, using oxygen charging pressures up to 40 atm. An alternate 1108CL bomb with superior resistance to chlorine and halogen acids is recommended for tests involving waste material and chlorinated samples.

A Built-In Oxygen Filling System

To speed and simplify the bomb filling operation, the 1266 Calorimeter has a semi-automatic system for charging the bomb with oxygen. Oxygen from a 1A commercial cylinder is connected to a microprocessor controlled solenoid installed in the calorimeter. To fill the bomb, the operator simply slips the filling hose connector onto the bomb inlet valve and pushes a key to start the filling sequence. Filling then proceeds automatically at a controlled rate to a pre- set pressure. Built-in safety provisions will prevent an accidental overcharge, and an error message will be shown if the desired pressure is not attained.

Automatic Standardization

The 1266 Calorimeter will automatically generate its energy equivalent (EE) value from a series of standardization tests, calculating a mean value from either (a) all standardization tests, or (b) from the last 10 operator designated tests for each bomb/bucket combination. The user can enter the maximum standard deviation he will accept and the calorimeter will advise him if his tests fail to meet this criteria. Energy equivalent values for up to eight bomb/bucket combinations can be stored in the computer.

Many User Options

Although specific procedures are recommended, various options are available to the user:

• Program parameters can be adjusted to accommodate unusual sample sizes and precision requirements.
• The calorimeter can be programmed to accommodate any reagent concentrations selected by the user.
• Calorific values can be reported in any of several measurement units.
• The calorimeter program can be adjusted to compensate for the subtle differences in the way acid correction values are handled in ASTM, BS, DIN and ISO methods.
• Program controls can be password protected.
• A bomb usage tally can be maintained to notify the user when each bomb should be serviced.

Multiple Language Options

Parr Model 1266 can be set to provide the programming options, operating menus, reports and error messages in the following choice of languages: English, French, German, and Czech.

Printed Reports

A 1755 Printer is furnished with each 1266 Calorimeter to produce a permanent record of all activity within the calorimeter.

Automatic Data Transfer

The calorimeter is equipped with three RS232C outputs for two-way communication with PC's, balance, and a terminal port. It is also equipped with a Smart Link port for connection to other devices.

Compatible Modular Design

The 1266 Calorimeter is fully compatible with existing 1108 Parr Bombs, calorimeter controllers, closed-circuit water handling systems and all Parr Smart Link devices, making it easy to fit the instrument into an existing laboratory set-up. Modular design with all electronics assembled in a removable chassis simplifies servicing problems. Also, the calorimeter is programmed so that it can be connected through a phone modem direct to the Parr Instrument Company factory computer for trouble shooting or for program parameter up-dates.

Ordering Guide

1266 Calorimeter consists of the following parts which are easily installed to provide a complete operating system.

• Calorimeter module with built-in calorimeter controller
• 1108 Oxygen Bomb
• Oval Bucket
• Printer
• Oxygen pressure regulator
• Spare parts kit
• Accessories for installation

1266EA Isoperibol Oxygen Bomb Calorimeter w/1108 Oxygen Bomb for, 115V 50/60Hz
1266EF Isoperibol Oxygen Bomb Calorimeter w/1108 Oxygen Bomb for, 230V 50/60Hz
1266CLEA Isoperibol Oxygen Bomb Calorimeter with 1108CL Oxygen Bomb for Chlorine Service for, 115V 50/60Hz
1266CLEF Isoperibol Oxygen Bomb Calorimeter with 1108CL Oxygen Bomb for Chlorine Service for, 230V 50/60Hz

SUGGESTED OPTIONAL ACCESSORIES

1108 Oxygen Bomb, Extra
1108CL Oxygen Combustion Bomb for Chlorine Service, Extra
A391DD Oval Bucket, Extra
1552 Water Cooler
1563 Water Handling System
1269 Spare Parts Kit
2811 Pellet Press