Bently Nevada 3500/40 125680-01 Sensor input signal

Description

3500/40 125680-01 Bargraphs display the current proportional values. The operator uses
these graphics and associated digital readouts to verify channel output.
Alarm Setpoints are indicated on the bar graph as follows:
Danger/Alarm 2 – Solid Red Line
Alert/Alarm 1 – Solid Yellow Line
You can determine the Alarm Setpoint Value by selecting the line for the
setpoint with the mouse cursor. Any channel bargraph value or channel
that enters Alert/Alarm 1 or Danger/Alarm 2 will cause the alarm lines in
the Channel Status box to indicate an alarm.

3500/40 125680-01 Verify Channel Accuracy
Use the following general test procedure to verify channel accuracy when
the calibration or test gas is applied.
1. Immediately after calibrating a channel (see Section 8.1 on page 66)
you may verify the channel.
2. Be sure to put the channel’s alarms into bypass before applying any
gas so as not to drive any relay state changes and/or send high levels
of gas readings out the analog outputs or any other system interfaces.
Refer to Section 6.4 for information on setting software switches to
place a channel’s alarms into bypass.
3. Apply the calibration or test gas. BN strongly recommends that you use
50% LEL for both the test and calibration gas.
4. Use the Verification Screen within the 3500 Configuration Software to
verify that the reading is within ±2% LEL of the concentration of the
test gas applied.
5. If the reading is not within 2% LEL of the test gas concentration,
recalibrate the sensor and repeat the test. If the test still is not
successful, go to Section 90, If a Channel Fails a Verification Test.

The general test procedure for verifying accuracy and alarm operation
consists of providing a sensor input signal that is sufficient to drive
channels above the alarm setpoint levels. Generally, you can use
calibration gas as the test gas. If necessary, purchase a test gas with a
concentration that is greater than the configured alarm setpoints. Use the
software display screens on the host screens to verify that the monitor
output is correct when you apply the test gas. You need test only those
alarm parameters that are configured and in use. The desired objectives of
this test will be
1. To verify channel accuracy,
2. To exceed Alert/Alarm 1 and Danger/Alarm 2 Setpoints and induce
alarms,
3. To produce a non-alarm condition once an alarm has been induced,
and
4. To verify that “Latching” or “Non-Latching” alarms operate as
configured.
When varying the signal from an alarm condition to a non-alarm
condition, you must consider alarm hysteresis. To ensure that alarm
hysteresis does not interfere with the reading of alarm states, purge gas
sensors with fresh air between gas applications and allow the sensor to
stabilize to the 0% LEL point.

Details: If you need urgent delivery orders, please feel free to contact us, and we will try our best to meet your needs.
Price problem: If you find that other suppliers offer cheaper prices for the same product, we are also willing to provide you with reference prices and give you further discounts.
Contact Us:+86 18106937731
Whatapp:+86 15359293870
Email: geabbdcs@gmail.com / 2872270648@qq.com
Contact Person: Chen

135785-01 3500/93 Display Unit, non backlighted
135785-02 3500/93 Display Unit, back-lighted
137412-01 3500/93 Manual
135799-01 3500/93 Display Interface Module
135799-02 3500/93 Display Interface Module
(use with A05 option only)
135813-01 3500/93 Display Interface I/O
Module
136634-0010-01 10 Foot (3 metres) Cable (PVC)
136634-0050-01 50 Foot (15 metres) Cable (PVC)
136634-0050-02 50 Foot (15 metres) Cable
(Teflon? )
136634-0100-01 100 Foot (30 metres) Cable (PVC)
136634-0100-02 100 Foot (30 metres) Cable
(Teflon? )
130121-02-01 500 Foot (152 metres) Extension
Cable (PVC)
130121-02-02 500 Foot (152 metres) Extension
Cable (Teflon? )
02200271 External Power Supply for 115 Vac
02200272 External Power Supply for 230 Vac
138227-01 Cable Adapter
146085-01 Power Cable
137224-01 System Mounting Assembly
(sheet metal for A01 & A05
options)
04309007 4-40 X 0.63 Phillips head screw for
System Mounting Assembly, 4 are
required