Analyze IT Zirconia Oxygen Analyzer for Small Boiler Applications

Transcription

1 Data Sheet Analyze IT Zirconia Oxygen Analyzer for Small Boiler Applications Ideal for small gas/oil fired boilers Cost effective solution for OEM outlets with a quick return on end-user investment Continuous on line measurement at less than the price of a spot check portable instrument Provides EN performance data at an affordable price NEMA X / IP66 Protection for both probe and transmitter Linear or Logarithmic ranges to 5% up to to 5% linear decades logarithmic from. to 5% Comprehensive diagnostics and built-in software protection ensures security and confidence in operation Innovative sensor technology month warranty with typical life 5 years Economic, efficient and environmentally friendly combustion control

2 Introduction The AZ Zirconia Analyzer is a versatile, microprocessorbased system designed primarily for the OEM boiler and burner controls market. The system is a low-temperature type designed to work in process temperatures up to 6 C ( F) and with a maximum duct surface temperature of o C (75 F). The analyzer provides oxygen computation, with readout and retransmission, based on the probe mv output signal. The output signal E mv is Nernstian in form and follows the equation: E (mv) =.96T(log P / P ) ± CmV Where T = Absolute temperature P = Reference O partial pressure P = Sample O partial pressure C = Cell constant (mv zero offset).96 = Faraday s gas Constant Probe Design The probe uses the proven and innovative ABB electrode and cell design technology which has proved so reliable in other ABB zirconia probe designs. The flexible probe design gives a range of intake tube lengths to suit all applications and an optional filter/flame arrester for use where Group IIB plant is applicable. The probe has options of male thread NPT or BSPT mountings. As with all previous ABB designs of low temperature probes the AZ probe is siteserviceable. The sensor housing is located on the outside of the duct wall and, therefore, diffusion of reference air into the sensor housing is sufficient, eliminating the need for an air pump or instrument air supply. The reference air diffuses into the housing through a porous membrane which restricts entry to air only and sustains the IP65 (NEMA X) protection. Transmitter Design The transmitter has, as standard, high/low alarm relays and a single linear or logarithmic isolated retransmission. Display features include %O, cell temperature, heater control output, cell mv, alarm set points, calibration sequence diagnostics and output settings. At system start up the transmitter controls the level of power to the mains-powered heater within the probe to eliminate the risk of thermal shock to the sensor. Based on the proven 6 series of transmitter the AZ transmitters are environmentally protected to NEMA X (IP66)*, and meet the requirements EN66 for industrial locations. The AZ units have the type display with four tactile membrane switches. The measured value display is a 5-digit, 7-segment, green, backlit LCD while the information display is a 6-character, single line, dot-matrix, green, backlit LCD. The information display can be user-programmed for display in English, French, German or Spanish. The Switch allows movement from the 'Operating Page' to the oxygen calibration sequence. Use of the appropriate security code allows further access to the pages for Setup Outputs and 'Electrical Calibration'. The switch is used to select the various programming pages, while the and switches change the programmable values. * Refer to the specification for full details.

3 Specification Probe Process gas temperature to 6 C ( to F) Maximum duct surface temperature C ( 75 F) Ambient air temperature to 7 C ( to 58 F) Environmental protection NEMA X ( hose down) Insertion lengths mm, 5 mm, 5 mm or 65 mm Response time s Time to t 9 5s (typical) Mountings in. NPT, in. BSPT or Adapter/ Standoff spool to suit the.m ZFG mounting plate Signal cable 6-way, multicore, screened cable with copper conductors available in standard lengths of 5m, 5m or m Thermocouple NiCr/NiAl Pt. BS97 Type K Overall dimensions See page Weight Probe complete with mounting flange and the following length intakes: mm.8kg (.6 lb) 5mm 5.kg (. lb) 5mm 5.kg (.9 lb) 65mm 5.7kg (.5 lb) Serviceability Site serviceable (replaceable sensor/oven assembly)

4 Specification Transmitter Display Measured value 5-digit x 7-segment, backlit LCD Information 6-character, single-line, dot-matrix, backlit LCD Parameters %O ( to 5%) Cell temperature Cell mv Two alarm set points Alarm can be configured as a general alarm for any of the following: THC open circuit + THC reversed + check THC Cell warming up Calibration failed Cell stability check Power failure Accuracies Oxygen concentration (display and retransmission) % of reading or ±.% O whichever is the greater Environmental Data Operating temperature limits 5 to 55 C ( to F) all functions to 7 C ( to 58 F) retransmission Storage temperature 5 to 75 C ( to F) Operating humidity limits Up to 95% RH non-condensing Power Supply Voltage requirements to V, to 6V 5/6 Hz Nom. 5/V AC 5/6Hz Power consumption (total system) 9VA at start up 6VA operational Insulation Mains to earth (line to ground) kv RMS Display resolution ± digit System accuracy* Display % of reading or ±.% O whichever is the greater, for C ambient temperature change Retransmission ±% of reading or ±.% O whichever is the greater, for C ambient temperature change Error due to power supply variation <.% O for ±% variation from normal supply voltage * for point calibration against certified test gases

5 Outputs and set points No. of relays Two Relay Contacts Single pole changeover Rating A 5V AC A 5V DC Loading (non-inductive) 75VA W Loading ( inductive) 75VA W Insulation kv RMS contacts to earth (ground) No. of alarm set points Two Set point adjustment Programmable Set point hysteresis ±% of set point (fixed) Local set point annunciation Red LED Mechanical Data Mounting Options Wall-mount Post-mount Panel-mount Protection to NEMA X (IP66) Wall/post mount Transmitter Panel-mount transmitter (front only) Overall Dimensions Wall-mount transmitter 6mm wide x mm high x 68mm deep (6. in. wide x 8. in. high x.68 in. deep) Panel-mount transmitter 96mm x 96mm x 9mm deep (.78 in. x.78 in. x 7.5 in. deep) Weight Wall-mount transmitter Panel-mount transmitter Post-mount kit.kg (. lb).5kg (. lb).5kg (. lb) Retransmission One fully isolated retransmission programmable for any range within to 5% O (linear). 5% minimum span.% to 5% O (logarithmic) programmable for any two decades within the range of. to 5%O Output Current to ma, to ma or to ma user-programmable Resolution.% at ma,.5% at ma Max. load resistance 75Ω ( ma max.) Output loop test Output loop test at %, 5%, 5%, 75% and % of output span 5

6 Electrical Connections Probe Wall-mount Transmitter Scr + Cell Ctrl. + + THC Cell THC ACJC Common HTR N HTR 5V V TB THC+ Com. Cell+ ACJC Link TB RX + RX Oven Control N TB7 L Screen Red White Green Black G/Yellow White Black Red Green Screen G/Yellow Note. The probe and transmitter earth must be common at the Junction Box Mains Supply Junction Box Mains Power System Mains Supply Connections 6

7 TB TB TB THC+ Com. Cell+ White Black Red ACJC Green Link RX + RX Oven Control N G/Yellow L A E N L G/Yellow Link Green Red Black White B Oven Control Screen Screen Mains Power To Probe To Probe Mains Supply Wall-mount Transmitter Panel-mount Transmitter Cell THC Scr Ctrl Cell THC ACJC Common HTR N HTR 5V V Screen White Black Red Green G/Yellow Red White To Transmitter Mains Power Probe 7

8 Overall Dimensions Dimensions in mm (in.) 6 (6.) 68 (.68) 5 (9.8) (8.) (9.) 69 (.7) Wall-mount Transmitter 8

9 Dimensions in mm (in.) 96 (.78) (.7) 9 (7.5) (.6 ) 96 (.78) Panel Cut-out (.6 +. ) Panel-mount Transmitter 9

10 Overall Dimensions Dimensions in mm (in.) Nominal Insertion Length, 5 or 65 (7.87,.78 or5.6) (.) 7 (.6) (.5) Sq (.9) ø95 (.7) ø7 (5) ø.5 in. NPS SCH5 (ø.6mm) Mounting Adapter in. NPT or in. BSPT Taper Thread Probe

11 Ordering Information Zirconia Oxygen Analyzer AZ X X/ X X X X X X Probe Sensor No sensor No purge or arrester No purge with arrester With purge, no arrester With purge and arrester Sample Tube Length No sample tube mm sample tube 5mm sample tube 5mm sample tube 65mm sample tube Mounting Description Not required in. NPT in. BSP Special Flange (ZFG.m) Flow-through adaptor (Not available) Transmitter Not required V Wall-mount V Post-mount V Panel-mount 5V Wall-mount 5V Post-mount 5V Panel-mount 5 6 Signal Cable Not required 5m 5m m Approvals CE only CE, CSA, FM, UL (pending) Language Not required English German French Spanish Configuration FOR OFFICE USE ONLY ABB (Standard) OEM OEM OEM OEM

12 ABB has Sales & Customer Support expertise in over 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 (5.) ABB SS/AZ Issue ABB Limited Oldends Lane, Stonehouse Gloucestershire, GL TA UK Tel: + () Fax: + () ABB Inc. 5 E. County Line Road Warminster, PA 897 USA Tel: Fax: