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TRANSCRIPT
Contents
1. Product Overview2. False Alarm Immunity3. Detector Placement4. Installation5. Split Concentration Range6. Maintenance7. Fault Conditions8. HART9. AMS Device Manager10. Applications11. Summary
ULTIMA OPIR-5 Detector Description
– Open path infrared hydrocarbon gas monitoring system
Expected Customer Benefits– Low power consumption– Dual analog outputs, ppm•M and LEL•M– Light and compact design– Resilient to solar radiation and fog– Long detection range – Available with HART and Modbus– Stainless steel construction– Integral display
Performance Specifications
Specifications Ultima OPIR-5
Response time (T90, s) < 5
Repeatability < 5%
Linearity 5% FS or 10%
Path length, max (m) 150
Operating temperature range (C) -55 to +65
Solar blind All conditions
Fog immunity90% blockage,
10% acc.
Combined weight, receiver and source (kg) 11.13 (SS only)
Supply power, nominal (W) 23
Bidirectional communication HART, Modbus
Event logging and AMS Device Manager Available
Solar Radiation Rejection
The ULTIMA OPIR-5 has superior immunity to solar radiation and other external IR radiation sources.
Performance Certifications
The ULTIMA OPIR-5 is the world’s first and only open path detector to meet agency performance requirements on both LEL•m and ppm•m scales
Detector Placement
Open path detectors should be installed based on several considerations:– Hazard conditions within the installation area covered– Ventilation rates, direction, and presence of recirculation and
dead zones– Sensitivity to low (geometric) sunlight, fog, and reflections– Powerful sources of electromagnetic emissions like high
powered electrical towers– Structures that may interfere with line of sight
* Health and Safety Executive, Offshore Division,” Fire and Explosion Strategy, Issue 1,” 2004.
Installation
When installing an ULTIMA OPIR-5 detector, it is useful to consider the following:
– Vibration can create issues– Solid foundation improves alignment integrity– The longer the line of sight path, the more solid the foundation required– Maintain a 6” to 12” radius around the line of site beam to avoid reflective
interference from piping and supports– For outdoor installations, consider maximum snow levels– Good immunity to fog, steam, and rain but immunity degrades over longer
distances– Avoid pedestrian traffic or overhead cranes– Keep beam low and down wind for heavy gases like propane and high for light
gases like methane
Wiring
8MOD1- Modbus 1- Modbus 2- MOD2
-17
7MOD1
+Modbus1+ Modbus
2+MOD2
+18
6A2 Alarm
NO/NCFault NO FLT1
19
5 AC Alarm C Fault C FLTC 20
4A1 Alarm
NC/NOFault NC FLT2
21
3W2 L Warn
NO/NCWarn
NC/NOW2 P
22
2 WC L Warn C Warn C WC P 23
1W1 L Warn
NC/NOWarn
NC/NOW1 P
24
9 10 11 12 13 14 15 16
+24V
CO
M
0 – 20 mA
L
CO
M
0 – 20 mA
P
CO
M
RS
T
CO
M
Ultima OPIR-5 Receiver
Split Concentration Range
With the split range function, users can monitor the entire span of gas concentration with a single analog signal– Reduces wiring and commissioning costs
0 4 12 20
5 LEL•m5,000 ppm-m (0.1 LEL•m)
AO (mA)
Met
hane
Gas
Con
cent
ratio
n(p
pm-m
)
Met
hane
Gas
Con
cent
ratio
n
(LEL
•m)
Alignment
Simple alignment process– Arm or base mounts available
Display– Menus activated by magnet– Enables easy alignment, setup
& diagnostics
Maintenance
As with other combustible sensors, the ULTIMA OPIR-5 should be included in the plant maintenance schedule*– Gas check frequency depends on operating conditions (ex.
dusty, corrosive, or damp environment)– Before repair or maintenance, the gas detector should be
removed to a safe place outside the area being protected If the hazard is still potentially present, it will be necessary to
use a replacement gas detector in the area until the original detector is reinstated
* BS EN 50073:1999 “Guide for the selection, installation, use and maintenance of apparatus for the detection and measurement of combustible gases or oxygen.”
Diagnostics
The ULTIMA OPIR-5 has self-diagnostics that inform users when certain types of device failures have occurred
Fault Code
Description
F0 Excessive negative drift or high IR
F1 Partial beam block or dirty lens
F2 Alignment
F3 Beam block
F5 Setup menu not exited
F6 Low supply voltage
F7 Heater error
F8 Failed zeroing
F9 Gas left (timeout)
F10 Reset short
F11 Unit overheating
tF7 Source internal error
HART
The ULTIMA OPIR-5 is available with HART for better efficiency with remote communication
– Only the primary scale, LEL•m or split range, connects through HART
Benefits of the HART-equipped ULTIMA OPIR-5:
– Better diagnostics
– Improved management of maintenance history and event logging
– Flexible and accurate digital transmission
– Effective cost control of devices in the field
– Installation savings due to fewer wires
HART –Analog Signal for Faults
Because HART requires a minimum current for operation, the ULTIMA OPIR-5’s fault conditions use 3.5 mA as minimum analog output
Function Current Level (mA)
Analog Output (Standard)
Modbus HART(Default)
HART-modified Analog Output
Fault 0 0 3.5 1.25
Test Gas 1.5 1.5 3.5 1.5
Setup Mode 1.5 1.5 3.5 1.5
Beam Block 2.0 2.0 3.5 2.0
Startup 0 0 3.5 1.25
Zero Reading 4.04 4.04 4.04 4.04
Gas Concentration 4 – 20 4 – 20 4 – 20 4 – 20
Over-range 21.7 21.7 21.7 21.7
On HART-equipped unit, user must select the HART-modified AO in order use AO values below 3.5 mA
AMS Device Manager
Asset management and process improvement– Check compliance to
calibration schedule– Coordinate calibrations so
as to reduce labor cost– Aggregate calibration to a
control room – Track gas level remotely– Read fault conditions from
control room; before sending technician to the field