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ar20 - 4 Pages

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ar20

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Type AR20 RTDs & AT20 Thermocouples for Industrial Processes APPLICATIONS • Process temperature measurements for liquefied natural gas systems, and power generation systems. • Exhaust gas temperature measurements for hazardous environments. • Reactor measurements in petrochemical Ex d head w ¯ Nipple-UnionNipple extension Interior View Ex d head DESCRIPTION The Ashcroft AT20 and AR20 temperature sensor assemblies provide accurate temperature measurements for applications that are located in hazardous environments. Each temperature sensor assembly consists of a spring loaded temperature sensor, magnesium oxide, MgO, insulated insert, connection head and lag extension. The assembly may also include an optional terminal block for wiring and/or transmitters. Thermocouple assemblies are manufactured to either to IEC 60584-2 or ANSI MC 96.1 and RTDs assemblies are manufactured to IEC 60751. BUZ head w ¯ Nipple-UnionNipple lag extension Standard Special 1. Ashcroft Series: AT20 & AR20 2. Insert Stem Diameter: 3 mm, 4.5 mm, 6 mm, 8mm, 1/8,˝ 3/16,˝ 1/4˝ 3. Stem Length: Minimum: 0.05 m/2 in. Maximum: 100 m/3937 in. 4. Sensor Type & Measuring Range: AR20 RTDs Pt 100 –200 to +600°C Pt 1000 –40 to +600°C AT20 Thermocouples Type J –40 to +750°C Type E –200 to +800°C Type K –200 to +1100°C Type N –200 to +1100°C 5. Wiring Configuration AR20 RTDs 2 wire 3 wire 4 wire AT20 Thermocouple 2 wire 6. Optional Approvals (pending) IEC 60079-1 ATEX: Ex ia IIC T6 Gb IECEx: Ex ia IIC T6 Ga EC 60079-11 ATEX: Ex ia IIC T6 Ga IECEx: Ex ia IIC T6 Ga 7. Accuracy Class: AR10 RTDs (IEC 60751) Class A: ±(0.15 + 0.0020 * |t|(1)) Class B: ±(0.30 + 0.0050 * |t|(1)) 1/2 Class B: ±(0.15 + 0.0025 * |t|(1)) 1/3 Class B: ±(0.10 + 0.0017 * |t|(1)) AT20 Thermocouples (ANSI MC 96.1) Type K Type T Type E ±2.2°C or ±1.0°C or ±1.7°C or ±0.0075*|t|(1) ±0.0075*|t|(1) ±0.0050*|t|(1) ±1.1°C or ±0.5°C or ±1.0°C or ±0.0040*|t|(1) ±0.0040*|t|(1) ±0.0040*|t|(1) Interior View BUZ head All specifications are subject to change without notice. All sales subject to standard terms and conditions. © Ashcroft Inc. 2015 Rev. 07/15 Ashcroft Inc., 250 East Main Street, S

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Type AR20 RTDs Part Number Coding 8. HEAD TYPE ITEM Standard Ex ia IIC T6 Ga Ex d IIC T6 Gb 2. STEM DIAMETER (e) 4. ACCURACY CLASS ITEM Class A Class B 1/2 Class B 1/3 Class B None ATEX IECEx 16. CALIBRATION REPORT None 3 point report for single sensor 5 point report for single sensor 3 point report for double sensor 5 point report for double sensor 12. LAG EXTENSION TYPE ITEM Single, 2 wire Single, 3 wire Single, 4 wire Double, 2 wire Double, 3 wire Double, 4 wire 7. STEM MATERIAL DESCRIPTION Nipple AISI 316 T = 0.04 m Nipple AISI 316 T = 0.1 m Nipple AISI 316 T = customer specified...

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Type AT20 Thermocouples Part Number Coding Standard Ex ia IIC T6 Ga Ex d IIC T6 Gb 2. STEM DIAMETER (e) 1/2 NPT Female 3/4 NPT Female M20 x 1.5 M20 x 1.5 adapter Pg 16 Type E (–200 to +800°C) Type J (–40 to +750°C) Type K (–200 to +1100°C) Type N (–200 to +1100°C) 4. ACCURACY CLASS DESCRIPTION Class 1, IEC 60584-2 Class 2, IEC 60584-2 Class 3, IEC 60584-2 Standard, ANSI MC 96.1 Special, ANSI MC 96.1 16. CALIBRATION REPORT ITEM None 3 point report for single sensor 5 point report for single sensor 3 point report for double sensor 5 point report for double sensor 17. NOMINAL LENGTH (S) 12....

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Type AR20 RTDs & AT20 Thermocouples World Headquarters Dimension Drawing Ashcroft Inc. 250 E. Main Street Stratford, CT 06614-5145 U.S.A. Tel: (203) 378-8281 Fax: (203) 385-0408 email: info@ashcroft.com www.ashcroft.com International Operations Brazil Willy Instrumentos de Medicao e Controle Ltda. Rua Joao Pessoa, 620 09520-000 Sao Caetano Do Sul-Sao Paulo-Brazil Tel: 55-11-4224-7402 Fax: 55-11-4224-7477 email: contato@ashcroft.com www.ashcroft.com.br China Ashcroft Instruments (Suzhou) Co., Ltd. 1508 Lin-hu Avenue Ascendas Lin-hu Industrial Square Wujiang Fenhu Economic Zone Wujiang China,...

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