User manual

MC-III™ EXP Flow Analyzer Section 3

Section 3—Conguration and Operation via Keypad

Calibration of the MC-III™ EXP is a simple matter of entering necessary parameters into the instrument.

The process for calibrating the MC-III EXP depends on how the instrument will be used. The keypad can

be used to calibrate the MC-III EXP for liquid or gas measurement using preprogrammed units, or for liquid

measurement using a calculated divisor. When preprogrammed units are used, the MC-III EXP automatically

calculates the divisor for volume calculation and the rate multiplier for ow rate calculation, making

calibration quick and easy.

Important: For compensated gas measurement, or gas or liquid measurement requiring multipoint

(2- to 12-point) linearization, calibration must be performed with the software user inter-

face (see Section 4, page 45).

Because the keypad is protected beneath the lid of the instrument, the enclosure must be opened to access the

keypad. For this reason, it is important to calibrate the instrument before installing it in a hazardous area.

WARNING: To prevent ignition of hazardous atmospheres, do not remove the cover unless the

area is void of combustible gas and vapors.

The following parameters can be congured using the six-button keypad on the front of the instrument:

• calibration factor and unit

• units of measurement for Total and Rate displays

• decimal position for Total and Rate displays

• input type and sensitivity level

• 4-20 mA output

• pulse output scale factor

• slave address

• baud rate