Description
3500/70M The general approach for testing alarm setpoints is to simulate the Velocity
signal with a function generator and power supply. The alarm levels are tested
by varying the output from the test equipment and observing that the correct
results are reported in the Verification screen on the test computer. It is only
necessary to test those alarm parameters that are 3500/70M configured and being used.
The general test procedure to verify current alarm operation will include
simulating a transducer input signal and varying this signal:
- to exceed over Alert/Alarm 1 and Danger/Alarm2 Setpoints, and
- to drop below any under Alert/Alarm 1 and Danger/Alarm 2 Setpoints, and
- to produce a nonalarm condition.
When varying the signal from an alarm condition to a nonalarm condition, alarm
hysteresis must be considered. Adjust the signal well below the alarm setpoint
for the alarm to clear.
brand | Product Name | Product model | Order No |
BENTLY | modular | 3500/70M | nothing |
Place of Origin | Marketable land | Imported or not | defects liability period |
Europe and America | Nationwide and overseas | yes | a year |
Place of shipment | Delivery method | How to use | Applicable industries |
Xiamen | Shunfeng Express | Commissioning and installation | Power Plant Steel Plant Cement Plant Shipboard Papermaking |
Service advantages | Foreign import, goods preparation and supply | Reasonable price and reliable quality | Pictures are for reference only |
Product features | Primary source of goods, supply by model | After sales guarantee | Chen 1810693-7731 |
- 3500/70M Disconnect PWR / B, COM, and SIG / A (PWR, COM / A, and SIG / B for
TMR I/O) field wiring from the channel terminals on the I/O module.
- Connect test equipment:
3500/70M For Seismoprobe:
Connect test equipment and run software as described in section 5.1.8.1
(Test Equipment and Software Setup – Velocity), use the setup shown on
page 150 (Seismoprobe Test Setup). 3500/70M If no filtering has been configured,
leave the frequency of the function generator set to 100 Hz. If filtering is
configured, the needed frequency can be calculated from the following
formula:
Frequency = (0.89 × HPF) + (0.1575 × LPF)
HPF = High-pass Filter Corner Frequency
LPF = Low-pass Filter Corner Frequency
If no filtering is configured, set the frequency of the function generator to 100
Hz.
If a Low-pass Filter is configured and no High-pass Filter is configured, use
the following to determine the HPF to use in the formula:
– If the units are RMS, use a HPF of 10 Hz. For any other
configuration, use a HPF of 3 Hz.
3500/70M If a High-pass Filter is configured and no Low-pass Filter is configured, use a
LPF of 5,500 Hz.
Set the frequency of the function generator to this new value. The above is
done to obtain a test frequency in the center of the channel frequency range.
For Velomitor:
Connect test equipment and run software as described in section 5.1.8.1
(Test Equipment and Software Setup – Velocity), use the setup shown on
page 151 (Velomitor Test Setup, Standard I/O) or page 153 for TMR I/O. If
no filtering has been configured, 3500/70M leave the frequency of the function
generator set to 100 Hz. If filtering is configured, calculate the needed
frequency from the following formula:
Frequency = (0.89 × HPF) + (0.1575 × LPF)
HPF = High-pass Filter Corner Frequency
LPF = Low-pass Filter Corner Frequency
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