Siemens 200 P652 Offset Correction, P653 Velocity, Using Sound Velocity Calibration

Parameters

Using Sound Velocity Calibration

Ensure a steady level at some low value (P653 and P654 adjusted accordingly)

1.Allow sufficient time for the vapor concentration to stabilize.

2.Press TRANSDUCER to display the calculated reading.

3.Repeat Step Two at least five times to verify repeatability.

4.Measure the actual reading (e.g. with a tape measure).

5.Enter the actual value.

Repeat this procedure if the atmosphere type, concentration, or temperature conditions are different from when the last sound velocity calibration was performed.

Note: In gasses other than air, the temperature variation may not correspond with the speed of sound variation. Turn off temperature sensor and use a fixed temperature.

P652 Offset Correction

The value altered when an Offset Calibration is performed.

Primary Index	Single Point Model	Dual Point Model
	Global	Transducer
Values	Range: -999 to 999.0
Related	• P650 Offset Calibration

Alternatively, if the amount of Offset Correction required is known, enter the amount to be added to the Reading before display.

P653 Velocity

The value adjusted based on the Sound Velocity at 20 °C (P654) vs. Temperature (P664) characteristics of air.

Primary Index	Single Point Model		Dual Point Model
	Global		Transducer
Values	Range: 50.3 to 20011.9 m/s (165 to 6601 ft/s)
Related	• P651	Sound Velocity Calibration
	• P654	Velocity at 20°C

Alternatively, enter the current sound velocity (if known), or perform a Sound Velocity Calibration (P651). The units used are m/s if P005 = 1, 2, or 3 (ft/s if P005 = 4 or 5).

Page 180 MultiRanger 100/200 – INSTRUCTION MANUAL 7ML19981FB06