PREMIX 2000 air/fuel ratio analyzer for premix burners

THERMOX®

PROCESS INSTRUMENTS

Permanent installation sensor for control of fiberizing lines
and other precombustion applications.
SENSORThe Thermox PreMix 2000 analyzer
accurately and continuously
measures the proportions of oxygenand fuel in pre-mix gases, operatingin either excess fuel or excess airconditions. The analyzer is fed asmall sample of the air/fuel mixture,burns it and then measures the net
oxygen or net excess fuel contentof the mixture.
The PreMix 2000 uses the Series
2000 Control Unit. This state-ofthe-art microprocessor control
unit provides software-selectablecalibration options, and extensive
analog and digital I/O capabilities,
including a bi-directional RS485 communications port. It also
employs a modular design thatmakes adding future upgrades orservicing easy.

APPLICATIONS► Glass forehearth► Air/fuel mixtures► Glass fiber apparatus► Open flame brazing andsoldering► Tempering furnaces► Gas generators► Metals and metal forming

OPERATION
Most of the sample gas entering
the analyzer passes through thebypass flow meter, which ensures afast response and keeps the sample
inlet purged of dead volume. A small
portion of the sample flows throughthe sample flow meter and flashback
arrestor to the furnace. An igniter at
the inlet of the furnace enables thefuel mixture to burn. The productsof combustion then flow past thezirconium oxide cell, where they aremeasured.

FEATURES/BENEFITS► Measure air/fuel ratio in openflame applications where fluegas measurements are notpractical.
► Measurement and display
options include excess oxygen,excess fuel, combined excess
oxygen to excess fuel, fuels/oxides, oxides/fuels, andcombustibles.

Range: All or selected portions of therange from 100% to 0.1% excess
oxygen and 0.1% to 50% Excess FuelAccuracy: ± 2% of measured value or±0.1% O2, whichever is greater; ± 5%of measured value or .25% excess
fuel, whichever is greater*.
Repeatability: ± 0.2% of measured
value
Ambient Temperature: -5 to 158ºF(-20 to 70ºC)
Sample Flow Rate: 0.5 L/min.
(1 scfh)Bypass Flow Rate: - 50 L/min. max.
(106 scfh)
Max. Sample Pressure: 10 psig
Power: 115 VAC ± 10%, 50/60 Hz.,
1200 VA max.; 230 VAC ± 10%, 50/60
Hz., 2400 VA max.
Calibration Gas Flow Rate:
10 psig, 2.1 to 4.2 scfh (0.70 kg/cm2,1.0 to 2.0 L/min.)
Excess Oxygen Calibration Gases:
O2 Span Gas: 20.9% (air) or from 1.0
to 100% O2, balance N2
O2 Zero Gas: 2% or from 0.1% to
10% O2, balance N2
Excess Fuel Calibration Gases:
CH4/O2/N2 Span: 40 to 60% ofrecorder output span
CH4/O2/N2 Zero: 5 to 10% of recorder
output span
Enclosure: UL Type 3R (IP14)* Specifications based on 0-15% range, Natural Gas► Operates under either excess
air (lean) or excess fuel (rich)conditions.
► Calculates calibration gas
mixture concentration forexcess fuel ranges.
www.ametekpi.com

PREMIX 2000 ANALYZER
Display: Four-line x 20-character vacuum
fluorescent. Displays combinations of excess
oxygen, excess fuel, combined oxygen toexcess fuel range, fuel/oxides, oxides/fuel,combustibles, time and date, cell temperature,user programmable text, thermocouple mV,or cell mV. Password protection and contextsensitive help are provided.
Analog Output: Two isolated linear current
outputs. Select excess oxygen, excess fuel,combined excess oxygen to excess fuel range,
combustibles, fuel/oxides, oxides/fuel, celltemperature, thermocouple mV or cell mV. Eachoutput can be 4-20 mA, 0-20 mA, 20-4 mA or
20-0 mA and is fully scalable. Hold or track
during calibration and select degree of damping.
Maximum load 1200 ohms.
Alarms: Two independent alarms, each high or
low selectable. One alarm can be allocated tosensor readings, calibrate or verify. Set relays toenergize or de-energize on alarm.
Contact Rating: 0.5A, 30V, 10VA max.
noninductive load, AC or DC
Diagnostics: Watchdog timer and service alarms.
System test for A/D, RAM, EEPROM, andkeypad. Display line 4 reserved for full text error
and diagnostic messages. Twenty-entry eventlog.
Communications: RS-485, 2-way addressable
Environment:
Ambient Temp: 14°F to 122°F (-10°C to 50°C)
Relative Humidity: 10% to 90%, non-condensing
Enclosure: Standard weatherproof NEMA 4(IP 56) wall/panel mount. Optional GP (GeneralPurpose) wall mount, GP 19” rack mount, GPpanel mount, or stainless steel weatherproof
NEMA 4X (IP 56) wall/panel mount. All are UL
Listed for NEC Class I, Division 2 areas. Purgedand explosion-proof versions also available.
Calibration: Calibrate or verify calibration. Storelast calibration and verification data. Selectablecalibration gas run time and process recoverytime.
Power Requirements: Nominal 115-230 VAC± 10%, 47-63 Hz, 75 VA max.
System Compliance:
EMC Directive 2004/108/EC
Low Voltage Directive 73/23/EEC

SENSORAPPROX. WEIGHT: 30 LB (13.6 KG)
9.25
23.50

18.38
46.67
12.00
30.48

6.13
15.57

9.50
24.13

2.00
5.08

1.65
4.19
3.00
7.62

8.00
20.32
Sample Flow

17.50
44.45

16.00
40.64

BYPASS OUTLET
1/4"O.D.
COMPRESSION FITTING

Bypass Flow

PreMix 2000

3.00
7.62

WARNING 'HOT'
SURFACE TEMPERATURE UP TO 160 F (70 C)
USE SUITABLE PROTECTIVE EQUIPMENT

PROCESS & ANALYTICAL INSTRUMENTS DIVISION

1.00
2.54
5.00
12.7

0.44Ø
1.12Ø

SAMPLE INLET
1/4"O.D.
COMPRESSION FITTINGEXHAUST
1/4"O.D. TUBE

6.50
16.51
7.00
17.78

INCHESCM

CONTROL UNITAPPROX. WEIGHTS:NEMA 4 WALL/PANEL MOUNT: 28 LB / 12.7 KG
19” RACK MOUNT: 14 LB / 6.35 KG
PANEL MOUNT: 14 LB / 6.35 KG
NOTES:
1. All static performance characteristics are with operating variables constant.
2. System accuracy referenced to 0.1 to 10% calibrated range.
3. Response is to calibration gas.

SALES AND MANUFACTURING:
Canada - Alberta

2876 Sunridge Way N.E., Calgary AB T1Y 7H2 • Tel: +1-403-235-8400, Fax: +1-403-248-3550

150 Freeport Road, Pittsburgh, PA 15238
Ph. +1-412-828-9040, Fax +1-412-826-0399

www.ametekpi.com© 2012, by AMETEK, Inc.
All rights reserved. Printed in the U.S.A.
F-0160 Rev. 4 (0114)

THERMOX ®

CONTROL UNIT

USA - Delaware

455 Corporate Blvd., Newark DE 19702 • Tel: +1-302-456-4400, Fax: +1-302-456-4444

WORLDWIDE SALES AND SERVICE LOCATIONS:
USA - Texas
Tel: +1-713-466-4900, Fax: +1-713-849-1924
BRAZIL
Tel: 55 19 2107 4100

FRANCE
Tel: 33 1 30 68 89 20, Fax: 33 1 30 68 89 99

CHINA
Beijing / Tel: 86 10 8526 2111, Fax: 86 10 8526 2141
Chengdu / Tel: 86 28 8675 8111, Fax: 86 28-8675 8141
Shanghai / Tel: 86 21 6426 8111, Fax: 86 21 6426 7818

GERMANY
Tel: 49 21 59 91 36 0, Fax: 49 21 59 91 3639

One of a family of innovative process analyzer solutions from AMETEK Process Instruments.
Specifications subject to change without notice.

INDIA
Tel: 91 80 6782 3200, Fax: 91 80 6782 3232
SINGAPORE
Tel: 65 6484 2388, Fax: 65 6481 6588