Quick Installation Guide
00825-0100-4764, Rev BA
June 2004
Rosemount 8714D
5
Limitations
• Current through terminals 1 and 2 shall not exceed 600mA (peak)
• Current through terminals 18 and 19 shall not exceed 5mA.
• Calibration shall occur with the standard set at 30 feet per second.
Procedure
1. Set-up your equipment according to Figure 3.
2. Power up the system.
3. Allow the Rosemount 8714D to warm-up for 30 minutes.
4. Set the input current to terminals 1 and 2 at 500mA.
5. Measure and record the average voltage from terminals 18 and 19 over a five minute
period.
6. Measure and record the average voltage across the 1 ohm resistor.
7. Calculate current with V=IR where R is the resistor value.
8. Divide result from step 5 by step 7 result.
9. Power down the system.
10. Switch the connections 1 and 2 at the Rosemount 8714D calibration standard.
11. Set the input current to terminals 1 and 2 at 500 mA.
12. Measure and record the average voltage from terminals 18 and 19 over a five minute
period.
13. Measure and record the average voltage across the 1 ohm resistor.
14. Calculate current with V=IR where R is the resistor value.
15. Divide result from step 12 by step 14 result.
16. Add the absolute value steps 8 and 15 and divide by two. The value should be within
0.05% (0.00108 mV/Amp) of 2.156mV/Amp.
17. If your device does not operate in conjunction with this specification, return the
Rosemount 8714D to the Rosemount Inc. factory for adjustment.
Figure 3. Set-up Rosemount 8714D and the transmitter as shown
Within the United States, Rosemount Inc. has two toll-free assistance numbers.
Customer Central:
1-800-999-9307
(7:00 a.m. to 7:00 p.m. CST)
Technical support, quoting, and order-related questions.
North American Response Center:
1-800-654-7768
(24 hours a day - Includes Canada) Equipment service needs.
Current
Source
Rosemount
8714D
Voltmeter
1 Ohm
Resistor
Current
Source
18
19
17
1
2
4764_revBA_QIG.fm Page 5 Tuesday, June 22, 2004 1:49 PM
