Panametrics Sentinel LCT, Руководство пользователя

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Sentinel LNG User’s Manual 47
Chapter 3. General Programming
3.7 Composite Programming
Under the PROG menu, select Composite... and press [ENT].
3.7.1 Entering Fluid Type
1. Scroll to Fluid Type and press [ENT]. Two other options appear, Normal and Tracking. Tracking refers to Tracking
Windows, which are used to detect the receive signal when you are unsure of the fluid soundspeed, or when the
fluid soundspeed changes drastically under process conditions.
2. Scroll to the desired option and press [ENT].
3. Make a selection between Preprogrammed and Other fluids. Scroll to the desired option, and press [ENT].
• For Normal fluids, the expected fluid Temperature can be programmed. Scroll to the Temperature option and
press [ENT]. Then use the arrow keys to enter the process temperature, and press [ENT].
• For fluids monitored with a Tracking Window, the meter enables the selection of Water (up to 100° or 260°C) or
Oil. Scroll to the desired listing and press [ENT].
4. The menu now varies, depending on the selections in steps 6 and 7.
• If Preprogrammed Fluids has been selected, the Sentinel LNG supplies a list of preprogrammed fluids. As shown
in Table 1 below, the list varies, depending on whether you have selected normal or tracking window fluid types. In
either case, scroll to the desired fluid and press [ENT].
• If Other was selected, the Sentinel LNG requests the fluid soundspeed (for Normal fluids) or minimum and
maximum soundspeed (for Tracking Window fluids). In either case, scroll to the Soundspeed option and press
[ENT]. Use the arrow keys to enter the appropriate soundspeed, and press [ENT].
5. Press the [ESC] key to return to the Fluid Type window.
Table 1: Preprogrammed Fluid Types
Tracking Windows Off Tracking Windows On
Water (0-260°C) Lube Oil (X200) Freon (R-12) Water (0-100°C)
Sea Water Methanol (20°C) Diesel Water (0-260°C)
Oil (22°C) Ethanol Gasoline Oil
Crude Oil LN2 (-199°C)