Thermometer Readout Selection Guide

Fluke Calibration Precision Digital Thermometer Readouts and Reference Thermometers

Thermometer Readout Selection Guide

A Fluke Calibration precision digital thermometer readout is specifically designed to measure temperature sensors for calibration. The purpose of the readout is to measure a temperature sensor’s resistance or voltage and display a temperature. However, not every instrument that simply measures resistance or voltage is well suited for work with PRTs, RTDs, thermocouples or thermistors. Because thermometer readouts are designed for calibration, they offer many advantages, especially convenience and accuracy.

Intrinsically safe thermometers

1551A Ex100 Ω thin-film RTD–50 °C to 160 °C 
(–58 °F to 320 °F)
Accuracy of ± 0.05 °C (± 0.09 °F) over full range.
Intrinsically safe (ATEX and IECEx compliant.
Two models to choose from (-50 °C to 160 °C or -80 °C to 300 °C)
1552A Ex100 Ω wire-wound PRT–80 °C to 300 °C 
(–112 °F to 572 °F)

Super-Thermometers

1594A SPRTs, PRTs, Thermistors ± 0.00006 °CRatio accuracy of 0.8 ppm; temperature-controlled internal reference resistors; six input channels.
1595A SPRTs, PRTs, Thermistors ± 0.000015 °CRatio accuracy of 0.2 ppm; Ratio Self-Calibration; automated zero-power measurements.

Fluke Precision Digital Thermometer Readouts

Model Probe Types Accuracy at 0 °CFeatures 

Most Popular

1502A PRTs ± 0.006 °CResolution of 0.001 °C and accuracy to match; uses ITS-90, IPTS-68, CVD, or DIN (IEC 751) conversions. 
1504 Thermistors ± 0.002 °CReads thermistors from 0 to 500 KW; uses Steinhart-Hart and CVD. 

Handheld

1523PRTs, Thermistors, Thermocoouples± 0.002 °CBattery-powered, handheld reference thermometer; INFO-CON connector reads coefficients without programming; saves 25 readings on demand; graphs trends
1524PRTs, Thermistors, Thermocoouples± 0.002 °CHandheld reference thermometer same as 1523 but with inputs for two thermometers; logs up to 15,000 readings and stores 25 more on demand.

Battery Powered

1523PRTs, Thermistors, Thermocoouples± 0.002 °CBattery-powered, handheld thermometer; INFO-CON connector reads coefficients without programming; saves 25 readings on demand; graphs trends
1524PRTs, Thermistors, Thermocoouples± 0.002 °CSame as 1523 but with inputs for two thermometers; logs up to 15,000 readings and stores 25 more on demand.
1529 PRTs, Thermistors, Thermocouples ± 0.006 °C
(PRT) 
Four channels can all be measured simultaneously; battery-powered; logs up to 8,000 readings; flexible display. 

High Accuracy

1594A SPRTs, PRTs, Thermistors ± 0.00006 °CRatio accuracy of 0.8 ppm; temperature-controlled internal reference resistors; six input channels.
1595A SPRTs, PRTs, Thermistors ± 0.000015 °CRatio accuracy of 0.2 ppm; Ratio Self-Calibration; automated zero-power measurements.

Multi-Channel

1586A Super-DAQSPRTs, PRTs, Thermistors, ThermocouplesPRTs:
± 0.005 °C
(using the external DAQ-STAQ Multiplexer)

Thermistors:
± 0.002 °C

Thermocouples:
± 0.5 °C
(using the High-Capacity Module and internal CJC)
Up to 40 input channels. Scan speeds as fast as 10 channels per second.
1560 Accepts any combination of the modules below; all are easily added to and removed from the 1560 base. 
2560SPRTs, PRTs ± 0.005 °C2 channels of 25W  or 100W  PRTs. 
2561HTPRTs ± 0.013 °C2 channels to 1200 °C. 
2562PRTs ± 0.01 °C8 channels of 2-, 3-, or 4-wire RTDs. 
2563Thermistors ± 0.0013 °C2 channels of resolution to 0.0001 °C. 
2564Thermistors ± 0.0025 °C8 channels for data acquisition. 
2565Thermocouples ± 0.05 °CReads most TC types with 0.0001 mV resolution. 
2566Thermocouples ± 0.1 °CReads any combination up to 12 channels of virtually any type of TC. 
25671000 Ω  PRTs ± 0.006 °C2 channels of high-resistance PRTs. 
25681000 Ω  PRTs ± 0.01 °C8 channels of high-resistance PRTs. 
1529 PRTs, Thermistors, Thermocouples ± 0.006 °C
(PRT)
Four channels can all be measured simultaneously; battery-powered; logs up to 8,000 readings; flexible display. 
1594A SPRTs, PRTs, Thermistors ± 0.00006 °CRatio accuracy of 0.8 ppm; temperature-controlled internal reference resistors; six input channels.
1595A SPRTs, PRTs, Thermistors ± 0.000015 °CRatio accuracy of 0.2 ppm; Ratio Self-Calibration; automated zero-power measurements.

Logging

1529 PRTs, Thermistors, Thermocouples ± 0.006 °C
(PRT)
Four channels can all be measured simultaneously; battery-powered; logs up to 8,000 readings; flexible display. 
1523PRTs, Thermistors, Thermocoouples± 0.002 °CBattery-powered, handheld thermometer; INFO-CON connector reads coefficients without programming; saves 25 readings on demand; graphs trends
1524PRTs, Thermistors, Thermocoouples± 0.002 °CSame as 1523 but with inputs for two thermometers; logs up to 15,000 readings and stores 25 more on demand.

Thermo-hygrometer 


Model 

Product 

Features 
 
1620AThe “DewK”
Thermo-Hygrometer 
Two channels measure ambient temperature to ±0.125 °C and  %RH to ±1.5 %. Onboard memory holds up to two years of time/date-stamped readings. Visual and audio alarms. Detachable sensors contain their own calibration data for easy recalibrations.  NEW! Ethernet and wireless capabilities.

Reference Multimeter


Model 

Product 

Features 
 
8508AFluke Reference MultimeterTrue ohms measurement. 20 amp current measurement. Stores up to 100 PRT coefficients.