AccuMac AM1960 Specifications

AM1950/1960 Quartz-Sheath SPRTs

HIGHLIGHTS

OVERVIEW

 Affordable primary standards
 Extremely low drift rate
 Temperature range: -200 °C to

670 °C

Standard Platinum Resistance Thermometers (SPRTs) are used to interpolate temperature in
the range from -189.3442 °C to 660.323 °C on the International Temperature Scale of 1990
(ITS-90). They are widely used as standard or reference thermometers to calibrate other
thermometers and to measure temperature precisely in primary and secondary laboratories.
AM1950 and AM1960 SPRTs are the crown jewels of AccuMac temperature probes. It takes
decades of our scientific expertise and original craftsmanship to create these world class
products. They feature a very low drift rate.

To reach the best performance in stability and repeatability, the sensing element and sensor
support are specially designed. To protect the platinum sensing wire from contamination at
high temperature, all parts used in the thermometer are extremely cleaned before assembly.
The assembly process is well controlled to protect the sensor from contamination. The gas
mixture filled in the thermometer makes the sensor wire oxidation effect as low as possible.
Every SPRT is fully tested for stability after manufactured. This world class probe meets ITS­90 criteria of standard thermometer fully with a very competitive price.

AM1950 has a temperature range from -200 °C to 500 °C. AM1960 covers range from -200 °C
to 670 °C.

Address: 90 N William Dillard Drive C-107, Gilbert, AZ 85233 For Technical Help: [e-mail]
Phone: [phone] For Sales: [e-mail]

© 2017 Accumac Corporation, All Rights Reserved www.accumac.com

AM1950/1960 Quartz-Sheath SPRTs

SPECIFICATIONS

Temperature Range 1950: -200 °C to 500 °C

1960: -200 °C to 670 °C

R

Nominal 25 Ω

tpw

Resistance Ratio W(Ga) >= 1.11807

W(Hg) <= 0.844235

Drift at 0.01 °C* 1950 <0.002 °C after 100 hours at 500 °C,

<0.004 °C/year typical
1960 <0.003 °C after 100 hours at 661 °C,
<0.005 °C/year typical

Repeatability ±0.001 °C
Thermal Shock ±0.001 °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 Quartz
Dimension 1950: 7 mm (OD) X 480 mm (L)

1960: 7 mm (OD) X 500 mm (L)

External Leads Insulated copper wire, 4 leads, 2.5 meters
Termination Gold-plated Spade
Handle Dimension 21 mm (OD) X 80 mm (L)
Optional Calibration NVLAP/ISO17025 accredited calibration and data available

per request

*Long-term drift rate is for reference only. It could be affected by such factors as handling, application, and maintenance etc.

ACCESSORIES

Model Description

9002 Wooden Carrying Case included

Address: 90 N William Dillard Drive C-107, Gilbert, AZ 85233 For Technical Help: [e-mail]
Phone: [phone] For Sales: [e-mail]

© 2017 Accumac Corporation, All Rights Reserved www.accumac.com