Zirconia Oxygen Probe

Transcription

1 Data Sheet SS/ZFG_7 Zirconia Oxygen Probe ZFG Series Envirnomental Certification MCERTS SIRA Certificate MC9900 /00 Combustion monitoring control true wet measurement of excess oxygen in situ measurement Low cost of ownership fully site-serviceable probe 7 months cell warranty Versatile four insertion lengths: 0.4m (6in.),.0m (9in.),.5m (58in.) and m (78in.) flame trap for gas-fired boiler applications soot filter as standard fast response options SIRA ML9900 /00 SIRA Certificate N o ML9900 /00 Superior technology and quality from the world leader in oxygen measurement

2 ZFG Series SS/ZFG_7 Introduction The ZFG Flue Gas Oxygen Probe is one of the most advanced in the world. A simplified design makes all the component parts easily accessible and field serviceable. This innovative probe construction gives the ultimate system flexibility while retaining all the features, benefits and reliability of the previous generation. The in situ probe is inserted directly into the boiler smoke box, or flue duct, eliminating the need for high-maintenace costly sampling installations. Operating in the process temperature range of 0 to 600 C (68 to F) the system gives true wet analysis of net excess oxygen in combustion gases. The probes can be fitted with a flame trap to extend their use for measurement on gas-fired boilers. Installation and commissioning are particularly easy and the level of in-service maintenance is extremely low. Principle of Operation The detector cell is constructed from stabilized zirconia featuring integral platinum electrodes and is specific to oxygen. Air is supplied to the internal (reference) electrode to provide a constant partial pressure of oxygen while the measured gases are in contact with the outer electrode, producing a potential proportional to O concentration. The Probe The zirconia probes, constructed from 6 stainless steel, house a ceramic dust filter, flame trap, detector cell, cell heater and thermocouple. Wiring and reference-air tube between the electronics unit and the probe can be carried in a single flexible conduit up to 0m (66 ft.) in length. Standard options include dual conduit to separate signal/power cables and IP65 rated versions. For other non-standard options contact ABB. The standard probe insertion lengths are 0.4,.0,.5 and.0m (6, 9, 58 and 78 in.) and fixing to the duct or smoke box is by means of a drilled flange. Standoff fixings can be used to reduce the insertion length for smaller ducts. An alternative / in. screwed bush is also available for fixing the 0.4m (6 in.) probe to the duct or smoke box. A Deflector Plate can be fitted if excessive dust flows are experienced in the flue. All components of the probe are easily removable and can be replaced on-site without the use of special tools or bonding agents. Replacement of the zirconia oxygen sensor can be made without the need for recalibration of the electronics unit. A calibration gas inlet port is fitted to the probes to enable accuracy checks to be made without removal of the probes from their mountings. The site-replaceable zirconia cell carries a 7 month warranty. Where a faster response is necessary the probe can be supplied with a fast response cell adaptor that replaces the filter and flame arrester. Where the flame arresting capability is required, the fast response test gas line purge is interlocked with the burner flameout detection. Replacement of the filter and flame arrestor with a flow-through cell adaptor enables the use of the 0.4m (6 in.) probe as an extractive (dry) O analyzer system. Clamp Screw Ceramic Filter Probe Gas Flow Deflector Plate Deflector Plate fitted to ZFG Zirconia Oxygen Probe

3 ZFG Series SS/ZFG_7 Probe Construction Standard Cell Applications Industrial boilers gas, oil or pulverized fuel fired Utility power boilers oil, gas or pulverized fuel fired Thermocouple Leads Heater Zirconia Cell Porous Ceramic Filter Recovery boilers Hospital boilers Incinerators (low temperature) Thermocouple Water vapor measurement on paper machines, laminates and chipboard manufacture (with ZMT transmitter only) Reference Air Electrode Contact Flue Gas MCERTS approval MC9900 /00 (with ZDT transmitter) Electrode Lead Test Gas Tube Inner Electrode (Reference) Outer Electrode (Measuring) Flame Arrester Flow-through Cell Thermocouple Leads Heater Zirconia Cell /8 in. BSP Thermocouple Reference Air Electrode Electrode Inner Electrode Outer Electrode 'O' Fast Response Cell Thermocouple Leads Heater Zirconia Cell Thermocouple Reference Air Electrode Electrode Inner Electrode Outer Electrode

4 ZFG Series SS/ZFG_7 Specification Calibration (in situ) One point using clean air Two point using certified test gas and air Flue temperature 0 to 600 C (68 to F) Pressure Suitable for all normal positive or negative flue pressures Dimensions See Overall Dimentions on Page 6 Probe fixing Flange (or / in. NPT screwed fitting for ZFG 0.4m [6 in.]) Probe insertion 0.4,.0,.5 or.0m (6, 9, 58 or 78 in.) Flange options Note. The Flange types listed are NOT pressure retaining. 0.4m (6 in.)zfg Standard 6.0 ±0.4mm thick x 0.0 ±mm dia. 6 holes 7.mm dia. equispaced on 80.0 ±0.mm PCD.0,.5 and.0m (9, 58 and 78 in.) ZFG Standard.0 ±mm thick x 65.0 ±0.mm dia. 6 holes.5 ±0.5mm dia. equispaced on 40mm PCD Rosemount/Westinghouse Model equivalent 6.0 ±0.4mm thick x 7.0 ±mm dia. 4 holes 9.5 (0.75 in.) dia. equispaced on 99.0 ±0.mm PCD ANSI B 6.5 (in.) 50lb.0 ±mm thick x 85.0 ±0.5mm dia. 4 holes 8mm dia. equispaced on 45.0 ±0.mm PCD DIN 50 Part DN65 PN 6, 5 and 40.0 ±mm thick x 5 ±0.5mm dia. 4 holes 0.0 ±0.mm equispaced on.0 ±0.mm PCD JIS B 8 DN65 5K.0±mm thick x 55.0 ±0.5mm dia. 4 holes 5 equispaced on 0.0 ±0.mm PCD Cable length 6m, 0m, 5m and 0m (0,, 49 or 66 ft) fitted Maximum cable length between the probe and the electronics unit 00m (8 ft) using EXFG/094 signal cable and EXFG/095 power cables. Probe weight 0.4m (6 in.) 6kg (.lb) [including 6m (0 ft) cable].0m (9 in.) 0.8kg (.7lb) [including 6m (0 ft) cable].5m (58 in.).6kg (5.5lb) [including 6m (0 ft) cable].0m (78 in.).5kg (7.5lb) [including 6m (0 ft) cable] Measuring Range Response rate Standard cell < 40s to 6% of step change < minute to 90% of step change (typical) Fast response cell For typically <s to t90 the fast response adaptor must be used Reference gas Clean, oil-free air. Flow rate 50 to 000cc/minute Construction 6 stainless steel and ceramic Thermocouple NiCr/NiAl EN PE4 Type K Insertion length 0.4m,.0m,.5m or.0m (6 in., 9 in., 58 in., 78 in.) Protection class Meets requirements of NEMA 4X/IP65 Envirnomental data Storage -5 o C to 55 o C (- to o F) Up to 95% humidity (non condensing) 4

5 ZFG Series SS/ZFG_7 Flanges & Fittings (Dimensions in mm [in.]) Note. These flanges are NOT pressure retaining. Standard Mounting Flange 0.4m (6 in.) Probe ANSI Mounting Flange mates with ANSI B6.5 (in.) 50lb (All Probes) 6 holes on 80 (.5) p.c.d. 6 (0.5) 4 holes 0 (0.78) on (4.7) p.c.d. (0.47) 0 (.97) Dia. 5 (6) Standard Mounting Flange.0m,.5m &.0m (9 in., 58 in. & 78 in.) Probes JIS Mounting Flange mates with JIS B8 DN65 5K (All Probes) 6 holes.5 (0.5) on 40 (5.5) p.c.d. (0.47) 4 holes 5 (0.6) on 0 (5.) p.c.d. (0.47) 65 (6.5) 55 (6.) DIN Mounting Flange mates with DIN 50 Part DN65 PN 6, 5 and 40 (all Probes) Model Mounting Flange 0.4m (6 in.) Probe 4 holes 8 (0.7) on 45 (5.7) p.c.d (0.47) 4 holes 9.5 (0.7) on 99 (.9) p.c.d. 6 (0.5) 85 (7.8) 7 (5) 5

6 ZFG Series SS/ZFG_7 Mounting Plates Dimensions in mm (in.) Six M6 studs equispaced on 80 p.c.d. 7 Six M0 studs equispaced on 40 p.c.d m (6 in.) Probe 0.0,.5 and 0m (9, 58 and 78 in.) Probes Mounting plates for ABB standard flanges are available as codeable options. Please contact ABB for other options Overall Dimensions Dimensions in mm (in.) 50 (5.9) 90 (7.48) nom. 400 (5.74) 6 (.44) 6 (.44) dia. 5 (5.98) 0.4m (6 in.) Probe For Flange Dimensions see Page 5.0,.5 and.0m Models (9, 58 and 78 in.) 6 (.44) dia. 40 (6.4) nom. 000, 500 or 000 (9.7, or 78.74) 6

7 ZFG Series SS/ZFG_7 Ordering Information Zirconia Oxygen Probe ZFG X X X X X X X X X Insertion Length 0.4m (6 in.).0m (9 in.).5m (58 in.).0m (78 in.) Flange Type Standard DIN ANSI JIS Model Special Conduit E ntry Type 0mm (0.78 in. ) / in. NP T Quantity None One standard Two standard One IP65 Two IP65 Length None 6m (0 ft) 0m ( ft) Cell Standard cell Flow-through cell Fast response cell Flame Arrester None Flame arrester* Reference Air Internal External Mounting Plate Assembly None Standard (0.4m [6 in.] probes) Standard (long probes) / in. NPT (0.4m [6 in.] probe only *Available for Standard cell only. Ordering Example ZFG ZFG Zirconia Oxygen Probe Insertion length.0m (9 in.) Flange type standard Conduit entry type 0mm (0.78 in.) Number of conduits two Conduit length 6m (0 ft) Cell type standard Flame arrester fitted Reference air internal tubing (within conduit) Mounting plate standard (long probes) Transmitters For details of transmitters for use with the ZFG probe see data sheets SS/ZMT and SS/ZDT/FG

8 ZFG Series SS/ZFG_7 ABB has Sales & Customer Support expertise in over 00 countries worldwide The Company s policy is one of continuous product improvement and the right is reserved to modify the information contained herein without notice. Printed in UK (.05) ABB 005 SS/ZFG Issue 6 ABB Limited Oldends Lane, Stonehouse Gloucestershire GL0 TA UK Tel: +44 (0) Fax: +44 (0) ABB Inc. Analytical Instruments 976 S. Virginia St. Ste., E Reno, Nevada 895 USA Tel: Fax: