Setup and Calibration
Setup and Calibration
Before using the gauge to make measurements, you must:
• Calibrate it to relate the detection of radiation from the source to the level of the
process material.
• Calibrate the current loop to a reference ammeter or the DCS.
Current Loop (analog output calibration)
Before completing a current loop calibration:
1. Connect an ammeter anywhere along the current loop (in series).
2. Make sure there is a 250 - 800 Ω load on the current loop. If no load or an
insufficient load exists on the loop, it may require temporary placement of a resistor.
3. Hook the meter in series with the load resistor.
4. Open Ohmview 2000
Perform the following steps to calibrate the current loop.
Set up 4 mA
1. Click Calibration, Current Loop Cal.
2. Click Execute.
3. Click OK.
4. Read the ammeter and enter the actual milliamp reading.
5. Click OK.
6. Click YES if the ammeter reads 4.00 mA or NO for any other reading.
7. Repeat until the meter reads 4.00 mA.
8. Read the ammeter and enter the actual milliamp reading.
9. Click OK.
10. Click OK.
Set up 20 mA
1. Read the ammeter and enter the actual milliamp reading.
2. Click OK.
3. Click YES if the ammeter reads 20.00 mA or NO for any other reading.
4. Repeat until the meter reads 20.00 mA.
5. Read the ammeter; enter the actual milliamp reading.
6. Click OK.
7. Click OK.
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