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AM1860/1850 Standard Platinum Resistance Thermometer

User’s Guide

4/10

2 Specifications

2.1 Specifications

Temperature Range

1850: -200°C to 500°C
1860: -200°C to 670°C

R

tpw

Nominal 25 Ω

or nominal 100

Ω

Resistance Ratio

W(Ga)>=1.11807
W(Hg)<=0.844235

Drift at 0.01°C*

1850      Δ

R(0.01°C ) <0.002 °C/100 hours at 500°C

Δ

R(0.01°C ) <0.008 °C/year

1860      Δ

R(0.01°C ) <0.003 °C/100 hours at 670°C

Δ

R(0.01°C ) <0.01 °C/year

Repeatability

±0.0015 °C

Thermal Shock

±0.0015 °C after 10 times thermal cycles from minimum to
maximum temperatures

Self-heating

0.0015 °C at 1 mA current

Measurement Current

1 mA

Sensor Length

42 mm

Insulation Resistance

>1000 MΩ at room temperature

Sheath Material

Inconel

TM

Dimension

1850: 6.35 mm (OD) X 480 mm (L)
1860: 6.35 mm (OD) X 500 mm (L)

External Leads

Insulated copper wire, 4 leads, 2.5 meters

Termination

Gold-plated Spade

Handle Dimension

21mm (OD) X 80 mm (L)

Calibration

Not included

Содержание AM1850

Страница 1: ...AM1860 1850 Standard Platinum Resistance Thermometer User s Guide...

Страница 2: ...3 Calibrations 3 2 Specifications 4 2 1 Specifications 4 3 General Operations 5 3 1 Connecting to the readout device 5 3 2 Drive Current 5 3 3 Stability of Readings 5 3 4 Immersion Requirements 5 3 5...

Страница 3: ...ous live component 5 Follow all other safety guidelines listed in this user s guide Cautions Follow these guidelines to avoid possible damage to the instrument 1 Avoid mechanical shocks DO NOT drop or...

Страница 4: ...ure temperature or change of temperature It has wide applications for dry wells or temperature baths 1 2 Main Features Extreme low drift rate Metal sheathed Great reference thermometer for dry block c...

Страница 5: ...C 0 003 C 100 hours at 670 C R 0 01 C 0 01 C year Repeatability 0 0015 C Thermal Shock 0 0015 C after 10 times thermal cycles from minimum to maximum temperatures Self heating 0 0015 C at 1 mA current...

Страница 6: ...wires can be distinguished by insulation colors Lead wire pairs attached to each end of the sensor are identified by red black and white blue insulation 3 2 Drive Current AccuMac recommends 1mA as dri...

Страница 7: ...submerge PRT handle when taking measurement 3 5 Thermal EMF Each AccuMac PRT has gone through an annealing process and stability test to minimize the thermal EMF which is caused by either impurities...

Страница 8: ...possible b When shipping the SPRT use protective box and other protective packaging materials to minimize mechanical shocks as much as possible c When using dry blocks make sure the well diameter is a...

Страница 9: ...ir service Be sure to have the model number and serial number of your SPRT available 5 2 Problem Causes and Solutions a R0 Rtpw becomes higher significantly This is likely caused by mechanical shocks...

Страница 10: ...e warranty period begins on the date of the shipment Parts product repairs and services are warranted for 90 days The warranty extends only to the original buyer or end user customer of an AccuMac aut...

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