Bently Nevada 3500/33(149986-01) Operator Display Software

Description

Hazardous gas detection systems are performance certified as a group;

which consists of a sensor (detector head), a monitor, and a means of

alarm indication. The certified system consists of all of the following:

• 3500/05 instrument rack, and
• 1 or 2 3500/15 power supply(ies), and
• 3500/22 TDI (Transient Data Interface) or 3500/20 RIM (Rack Interface Module), and

• 3500/63 hazardous gas detection monitor, and
• 350800 hazardous gas sensor(s) with or without Ex d flameproof

junction box or another sensor approved by Bently Nevada, LLC *, and

• 3500/01 Configuration Software

AND at least one of the following means of providing latched alarming:

• a 3500/32, 3500/33, or 3500/34 Relay Module
• an approved control system** receiving data from the 3500 system

via:

– 4-20 mA outputs from the rack, or

– Modbus® through the 3500/92 Communications Gateway

Module.

Additional acceptable accessories are:

• 3500/02 Data Acquisition Software
• 3500/03 Operator Display Software
• 3500/94 Display
• 3500/95 Display w/ Integrated Computer

* The Bently Nevada 3500/63 monitor is approved only for use with the Bently

Nevada 350800 sensor or the General Monitors 10014-1 sensor.

** This approval does not include or imply approval of apparatus to which the

subject instrumentation may connect. In order to maintain a performance

approved system, the Approvals Agencies must also approve the apparatus to

which this instrument connects.

The system approved by Bently Nevada, LLC meets the following

Performance Standards specific to combustible gas detection:

FM 3620 Approval Standard for Combustible Gas Detectors

CSA C22.2 No. 152 Combustible Gas Detection Instruments

IEC 61779-1, -4 Electrical apparatus for the detection and measurement of

flammable gases, Part 4: Performance requirements for group II apparatus

indicating a volume fraction up to 100% lower explosive limit

ANSI / ISA—12.13.01 – Performance Requirements, Combustible Gas

Detectors

Some of the important criteria associated with the above standards are:
• A unique state called “Over Range” (greater than 100% LEL reading)
must be latching and requires user intervention to clear the latch.
• A fault indication must be given by the time the reading drops to -10%
LEL. The agencies require this safety mechanism because of the
inherent affects of temperature on the catalytic bead technology. If the
resistance of the reference bead exceeds the resistance of the
catalytic bead as the temperature rises the measurement will appear
as a negative gas reading. If the sensor gets hot enough and the

bridge becomes unbalanced enough, the system will indicate a fault as
required by the performance standards. For the Bently Nevada system
the negative reading is displayed to aid with troubleshooting until it
reaches the -10% LEL Level.
• Accuracy at Room Temperature: The sensing head is exposed to five
different gas concentrations over the full scale range (0 to 100% LEL)
and the system shall not vary from the known test gas by more than
±3% of full-scale gas concentration or ±10% of applied gas
concentration, whichever is greater.
• Accuracy over Temperature: The same gas concentration exposures
used during accuracy tests at ambient temperature are used. While
the sensor is exposed to –25 ºC and to +200 ºC the output indication
shall not vary from the indication observed during normal ambient
exposure by more than ±5% of full-scale gas concentration, and when
exposed to –40 ºC the variation shall not be more than ±10% of
full-scale gas concentration.
• Long-term stability: IEC test is a 90-day test with intermittent spans of
time being exposed to calibration gas. Readings must be within ±10%
of the measuring range or ±30% of the indication, whichever is greater.
• Step Change Response Time: When suddenly exposing the sensor head
to 100% LEL the system will read 50% LEL within 10 seconds and 90%
LEL within 30 seconds.
In addition, to the above criteria, the Bently Nevada system has met the
requirements for humidity variation, calibration to methane or hydrogen,
air velocity variation, supply voltage variation, vibration, drop test, as well
as general construction, markings, and documentation requirements with
regard to the above listed standards.

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