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General Information
Introduction
This manual contains installation, operation, and maintenance instructions for the Chandler
Engineering Model 1200 Atmospheric Consistometer.
Purpose and Use
The Chandler Engineering Model 1200 Atmospheric Consistometer is used for various tests
of oil well cements as detailed in the American Petroleum Institute Specification for
Materials and Testing for Well Cements - Specification 10A (API Spec 10A). The apparatus
is used in conjunction with tests for:
• Determination of Water Content of Slurry
• Determination of Fluid Loss
• Determination of Rheological Properties of Cement Slurries
Description
The Chandler Engineering Model 1200 Atmospheric Consistometer consists of a stainless-
steel water bath that houses two slurry containers. The instrument front panel contains a
microprocessor-based temperature controller that also serves as a digital temperature
indicator. The temperature controller operates a relay that controls a 1500-watt heater. The
Model 1200 includes cooling coils as a standard feature.
Lighted switches that also serve as circuit breakers are installed in the front panel. The
circuit breaker function of these switches eliminates the necessity for in-line fuses.
Units of consistency for the cement slurry are directly indicated on the top dials of the slurry
containers. Slurry consistency is expressed in Bearden units of consistency, Bc, where 100
Bc is equivalent to the spring deflection observed with 2,080 grams-centimeter of torque
(400 grams weight) using the weight-loaded calibrating device. For further details, refer to
API Spec 10A.
The slurry containers are rotated by engaging the pins of the lid with the slots on the rotator.
The rotators are fitted with timing sprockets driven by the motor, which is factory set at 150
rpm. The belt also drives an impeller that agitates the water bath. The motor should be
turned off before engaging or disengaging the slurry container.
PREFACE
P-1
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