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Fluke Calibration 1502A-156
Tweener Thermometer Readout for RTD, PRT, or SPRT Type Probes

  • Tweener for reading PRT, PRT, or SPRT probes
  • Battery packs available
  • Best price/performance package
  • Compatible Probes Sold Separately
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Fluke Calibration 1502A-156 Shown
Product Information
Datasheet 99 KB PDF
Manual 373 KB PDF
PDF HelpPDF Help

One of Fluke Calibration's best-selling products is the Tweener thermometer, and there's a reason. No other company has a thermometer that comes close to the performance and features of the Tweener for anywhere near its price.

1502A Tweener PRT Readout

The 1502A Tweener features accuracy up to ±0.006°C (the 1504 is even more accurate, up to ±0.002°C). In addition, it reads 100-ohm, 25-ohm, and 10-ohm probes(sold separately), has a resolution of 0.001°C across its entire range, and is the smallest unit in its class. It also has an optional battery pack for completely portable operation.

Each Tweener is programmable to match a probe's constants for maximum linearity and accuracy. All probe constants and coefficients are programmed through simple, front-panel keystrokes. Temperature is displayed in °C,°F, K, or resistance in ohms.

The 1502-A-156 accurately measures the resistance of the probe and then converts the resistance to a temperature value using its built-in algorithms.

For convenience, the 1502A156 reads the common industrial grade IEC-751 or "385" ALPHA RTD without any programming. Enter the actual R0 and ALPHA of the individual probe for increased accuracy. For maximum accuracy, use the ITS-90 formulas. The Tweener accepts the subranges 4 and 6 through 11.

ITS-90 formulas reside in the Tweener's firmware. If your probe has been calibrated for any of the above subranges of the ITS-90, you simply enter the coefficients directly into your Tweener.

Each thermometer comes complete with an RS-232 interface for automation of temperature data collection, calibrations, or process control functions. An IEEE-488 interface is available as an option.

The 1502A is calibrated digitally using the front-panel buttons. You never have to open the box to calibrate it. This calibration protocol further reduces the cost of the 1502A. It goes where you go and works the way you want it to.

Software

With 9934 LogWare, both Tweener models may be used for real-time data acquisition. Collect data and analyze it graphically or statistically. Additionally, Tweeners may be used as reference thermometers with MET/TEMP II software.

Battery pack

Want to take your Tweener on the road? Order Hart's 9320A Battery Pack. The battery gives you 36 hours between charges, allowing you to take your work wherever you need.

Calibration choices

Each Tweener and its accompanying probe (sold separately) have their own individual calibration reports. Overall system error can be calculated from the individual errors, rendering the added cost of system data unnecessary. However, for those requiring it, system data is available at two or more temperatures of your choice.

Specifications 1502A 
Temperature Range  -200°C to 962°C
(-328°F to 1764°F) 
Resistance Range  0Ω to 400Ω, auto-ranging 
Probe  Nominal RTPW: 10Ω to 100Ω RTD, PRT, or SPRT 
Characterizations  ITS-90 subranges
4, 6, 7, 8, 9, 10, and 11
IPTS-68: R0, a, d, a4,
and c4
Callendar-Van Dusen: R0, a, d, and b 
Resistance Accuracy
(ppm of reading) 
0Ω to 20Ω: 0.0005Ω
20Ω to 400Ω: 25 ppm 
Temperature Accuracy  ±0.004°C at -100°C
±0.006°C at 0°C
±0.009°C at 100°C
±0.012°C at 200°C
±0.018°C at 400°C
±0.024°C at 600°C
Operating Temperature Range  16°C to 30°C 
Resistance Resolution  0Ω to 20Ω: 0.0001Ω
20Ω to 400Ω: 0.001Ω
Temperature Resolution  0.001°C 
Excitation Current  0.5 and 1 mA, user selectable, 2 Hz 
Measurement Period  1 second 
Digital Filter  Exponential, 0 to 60 seconds time constant (user selectable) 
Probe Connection  4-wire with shield, 5-pin DIN connector 
Communications  RS-232 serial standard
IEEE-488 (GPIB) optional 
Display  8-digit, 7-segment, yellow-green LED; 0.5-inch-high characters 
Power  115 VAC (±10 %), 50/60 Hz, 1 A, nominal
230 VAC (±10 %), 50/60 Hz, 1 A, nominal, specify 
Size (HxWxD)  61 x 143 x 181mm (2.4 x 5.6 x 7.1 in) 
Weight  1.0 kg (2.2 lb.) 
Probes from Hart
(Sold Separately)
5615, 5627, 5626, 5628, 5622
Calibration  Accredited NIST-traceable calibration provided 
†Temperature ranges and accuracy may be limited by the sensor you use. 
Ordering Information
Model Description Buy Now Price
1502A-156
MFR ID: 1648927
Fluke Calibration 1502A-156 Tweener Thermometer Readout for RTD, PRT, or SPRT Type Probes Buy Now $2,685.00
Related Products
1504-156
MFR ID: 1648966
Fluke Calibration 1504-156 Tweener Thermometer Readout for High Accuracy Thermistor Probes Buy Now $2,675.00
Included Accessories
  • 1 - User Manual
  • 1 - Power Cord
  • 1 - Probe Connector*
*Optional Probe must be purchased separately
Included
Optional Accessories
2505
MFR ID: 1650686
Fluke Calibration 2505 Connector, Spare DIN, 5 pin for 1502-4 Buy Now Sale $90.00
(Reg. $100.00)
9301
MFR ID: 1658511
Fluke Calibration 9301 Case, Rugged Carrying Buy Now Sale $319.50
(Reg. $355.00)
9934-M
MFR ID: 1658732
Fluke Calibration 9934-M LogWare Software, 1-chan, Multi User Buy Now Sale $657.00
(Reg. $730.00)
9934-S
MFR ID: 1658744
Fluke Calibration 9934-S LogWare Software, 1-chan, Single User Buy Now Sale $346.50
(Reg. $385.00)
Probes
5615-series
5615-6-A
MFR ID: 3055386
Fluke Calibration 5615-6-A Base Model Secondary PRT Probe; 6 x 3/16", -200 to 300C Buy Now $1,170.00
5615-6-G
MFR ID: 3002690
Fluke Calibration 5615-6-G Secondary Reference Temperature Standard Probe, Golden Pins Buy Now $1,170.00
5615-6-S
MFR ID: 3002749
Fluke Calibration 5615-6-S Secondary Reference Temperature Standard Probe, Spade Lugs Buy Now $1,170.00
5615-9-G
MFR ID: 3002772
Fluke Calibration 5615-9-G Secondary Reference Temperature Standard Probe, Golden Pins Buy Now $1,170.00
5615-12-G
MFR ID: 3002854
Fluke Calibration 5615-12-G Secondary Reference Temperature Standard Probe, Gold Pins Buy Now Sale $1,170.00
(Reg. $1,170.00)
5615-12-S
MFR ID: 3002902
Fluke Calibration 5615-12-S Secondary Reference Temperature Standard Probe, Spade Lugs Buy Now $1,170.00
5615-9BND-A
MFR ID: 4682875
Fluke Calibration 5615-9BND-A 90° Bend, Secondary Standard PRT, INFO-CON for 914X Buy Now Sale $1,170.00
(Reg. $1,170.00)
5615-9BND-B
MFR ID: 4682882
Fluke Calibration 5615-9BND-B 90 Degree Bend, Secondary Standard PRT, Bare Wire Buy Now Sale $1,170.00
(Reg. $1,170.00)
5615-9BND-D
MFR ID: 4682894
Fluke Calibration 5615-9BND-D 90° Bend, Secondary Standard PRT, 5-pin DIN for Tweener Thermometers Buy Now Sale $1,170.00
(Reg. $1,170.00)
5615-9BND-G
MFR ID: 4682907
Fluke Calibration 5615-9BND-G 90 Bend, Secondary Standard PRT, 5-pin DIN for Gold Pins Buy Now Sale $1,170.00
(Reg. $1,170.00)
5615-9BND-I
MFR ID: 4682918
Fluke Calibration 5615-9BND-I 90° Bend, Secondary Standard PRT, INFO-CON for 1521 or 1522 Buy Now Sale $1,170.00
(Reg. $1,170.00)
5615-9BND-J
MFR ID: 4682929
Fluke Calibration 5615-9BND-J 90 Bend, Secondary Standard PRT, Banana Plugs Buy Now Sale $1,170.00
(Reg. $1,170.00)
5615-9BND-L
MFR ID: 4682934
Fluke Calibration 5615-9BND-L 90 Bend, Secondary Standard PRT, Mini Spade Lugs Buy Now Sale $1,170.00
(Reg. $1,170.00)
5615-9BND-M
MFR ID: 4682941
Fluke Calibration 5615-9BND-M 90 Bend, Secondary Standard PRT, Mini Banana Plugs Buy Now Sale $1,170.00
(Reg. $1,170.00)
5615-9BND-P
MFR ID: 4682952
Fluke Calibration 5615-9BND-P 90 Bend, Secondary Standard PRT, INFO-CON for 1523 or 1524 Buy Now Sale $1,170.00
(Reg. $1,170.00)
5615-9BND-S
MFR ID: 4682965
Fluke Calibration 5615-9BND-S 90 Bend, Secondary Standard PRT, Spade Lugs Buy Now Sale $1,170.00
(Reg. $1,170.00)
5622-series
5622-05-B
MFR ID: 1653385
Fluke Calibration 5622-05-B Fast Response Platinum Resistance PRTs, 0.5Mm Dia., Bare Wire Buy Now Sale $427.50
(Reg. $475.00)
5622-05-G
MFR ID: 1653415
Fluke Calibration 5622-05-G Fast Response Platinum Resistance Probe, 0.5mm Dia, Gold Pins Buy Now Sale $427.50
(Reg. $475.00)
5622-05-I
MFR ID: 1653426
Fluke Calibration 5622-05-I Fast Response Platinum Resistance Probe, 0.5mm Dia, INFO-CON 1521/1522 Buy Now Sale $427.50
(Reg. $475.00)
5622-05-J
MFR ID: 1653432
Fluke Calibration 5622-05-J Fast Response Platinum Resistance Probe, 0.5mm Dia, Banana Plugs Buy Now Sale $427.50
(Reg. $475.00)
5622-05-S
MFR ID: 1653467
Fluke Calibration 5622-05-S Fast Response Platinum Resistance Probe, 0.5mm Dia, Spade Lugs Buy Now Sale $427.50
(Reg. $475.00)
5622-10-G
MFR ID: 1653500
Fluke Calibration 5622-10-G Fast Response Platinum Resistance Probe, 1mm Dia, Gold Pins Buy Now Sale $364.50
(Reg. $405.00)
5622-10-I
MFR ID: 1653517
Fluke Calibration 5622-10-I Fast Response Platinum Resistance Probe, 1mm Dia, INFO-CON 1521/1522 Buy Now Sale $364.50
(Reg. $405.00)
5622-10-J
MFR ID: 1653521
Fluke Calibration 5622-10-J Fast Response Platinum Resistance Probe, 1mm Dia, Banana Plugs Buy Now Sale $364.50
(Reg. $405.00)
5622-10-S
MFR ID: 1653556
Fluke Calibration 5622-10-S Fast Response Platinum Resistance Probe, 1mm Dia, Spade Lugs Buy Now Sale $364.50
(Reg. $405.00)
5622-16-G
MFR ID: 1653595
Fluke Calibration 5622-16-G Fast Response Platinum Resistance Probe, 1.6 mm Dia, Gold Pins Buy Now Sale $364.50
(Reg. $405.00)
5622-16-I
MFR ID: 1653602
Fluke Calibration 5622-16-I Fast Response Platinum Resistance Probe, 1.6mm Dia, INFO-CON 1521/1522 Buy Now Sale $364.50
(Reg. $405.00)
5622-16-J
MFR ID: 1653616
Fluke Calibration 5622-16-J Fast Response Platinum Resistance Probe, 1.6mm Dia, Banana Plugs Buy Now Sale $364.50
(Reg. $405.00)
5622-16-S
MFR ID: 1653640
Fluke Calibration 5622-16-S Fast Response Platinum Resistance Probe, 1.6mm Dia, Spade Lugs Buy Now Sale $364.50
(Reg. $405.00)
5622-32-G
MFR ID: 1653684
Fluke Calibration 5622-32-G Fast Response Platinum Resistance Probe, 3.2 mm Dia, Gold Pins Buy Now Sale $364.50
(Reg. $405.00)
5622-32-I
MFR ID: 1653691
Fluke Calibration 5622-32-I Fast Response Platinum Resistance Probe, 3.2mm Dia, INFO-CON 1521/1522 Buy Now Sale $364.50
(Reg. $405.00)
5622-32-J
MFR ID: 1653706
Fluke Calibration 5622-32-J Fast Response Platinum Resistance Probe, 3.2mm Dia, Banana Plugs Buy Now Sale $364.50
(Reg. $405.00)
5622-32-S
MFR ID: 1653738
Fluke Calibration 5622-32-S Fast Response Platinum Resistance Probe, 3.2mm Dia, Spade Lugs Buy Now Sale $364.50
(Reg. $405.00)
5626-series
5626-12-A
MFR ID: 3055440
Fluke Calibration 5626-12-A Secondary PRT Probe, 1/4 X 12 in, INFO-CON for 914X Buy Now Sale $2,540.00
(Reg. $2,540.00)
5626-12-B
MFR ID: 1653830
Fluke Calibration 5626-12-B Secondary PRT Probe, 1/4 X 12 in, Bare Wire Buy Now Sale $2,540.00
(Reg. $2,540.00)
5626-12-D
MFR ID: 1653848
Fluke Calibration 5626-12-D Secondary PRT Probe, 1/4 X 12 in, 5-pin DIN for Tweener Thermometers Buy Now Sale $2,540.00
(Reg. $2,540.00)
5626-12-G
MFR ID: 1653866
Fluke Calibration 5626-12-G Secondary PRT Probe, 1/4 X 12 in, Gold Pins Buy Now Sale $2,540.00
(Reg. $2,540.00)
5626-12-L
MFR ID: 1653894
Fluke Calibration 5626-12-L Secondary PRT Probe, 1/4 X 12 in, Mini Spade Lugs Buy Now Sale $2,540.00
(Reg. $2,540.00)
5626-12-M
MFR ID: 1653907
Fluke Calibration 5626-12-M Secondary PRT Probe, 1/4 X 12 in, Mini Banana Plugs Buy Now $2,540.00
5626-12-P
MFR ID: 3377055
Fluke Calibration 5626-12-P Secondary PRT Probe, 1/4 X 12 in, INFO-CON for 1523 or 1524 Buy Now Sale $2,540.00
(Reg. $2,540.00)
5626-15-A
MFR ID: 3055457
Fluke Calibration 5626-15-A Secondary PRT Probe, 1/4 X 15 in, INFO-CON for 914X Buy Now $2,600.00
5626-15-B
MFR ID: 1653929
Fluke Calibration 5626-15-B Secondary PRT Probe, 1/4 x 15 in, Bare Wire Buy Now Sale $2,595.00
(Reg. $2,595.00)
5626-15-D
MFR ID: 1653934
Fluke Calibration 5626-15-D Secondary PRT Probe, 1/4 X 15 in, 5-pin DIN for Tweener Thermometers Buy Now Sale $2,595.00
(Reg. $2,595.00)
5626-15-G
MFR ID: 1653952
Fluke Calibration 5626-15-G Secondary PRT Probe, 1/4 X 15 in, Gold Pins Buy Now Sale $2,595.00
(Reg. $2,595.00)
5626-15-I
MFR ID: 1653965
Fluke Calibration 5626-15-I Secondary PRT Probe, 1/4 X 15 in, INFO-CON for 1521 or 1522 Buy Now Sale $2,595.00
(Reg. $2,595.00)
5626-15-J
MFR ID: 1653976
Fluke Calibration 5626-15-J Secondary PRT Probe, 1/4 X 15 in, Banana Plugs Buy Now Sale $2,595.00
(Reg. $2,595.00)
5626-15-L
MFR ID: 1653983
Fluke Calibration 5626-15-L Secondary PRT Probe, 1/4 X 15 in, Mini Spade Lugs Buy Now Sale $2,595.00
(Reg. $2,595.00)
5626-15-M
MFR ID: 1653990
Fluke Calibration 5626-15-M Secondary PRT Probe, 1/4 X 15 in, Mini Banana Plugs Buy Now Sale $2,595.00
(Reg. $2,595.00)
5626-15-P
MFR ID: 3377062
Fluke Calibration 5626-15-P Secondary PRT Probe, 1/4 X 15 in, INFO-CON for 1523 or 1524 Buy Now Sale $2,595.00
(Reg. $2,595.00)
5626-15-S
MFR ID: 1654000
Fluke Calibration 5626-15-S Secondary PRT Probe, 1/4 X 15 in, Spade Lugs Buy Now Sale $2,595.00
(Reg. $2,595.00)
5626-20-A
MFR ID: 3055469
Fluke Calibration 5626-20-A Secondary PRT Probe, 1/4 X 20 in, INFO-CON for 914X Buy Now $3,210.00
5626-20-B
MFR ID: 2451974
Fluke Calibration 5626-20-B Secondary PRT Probe, 1/4 x 20 in, Bare Wire Buy Now $3,210.00
5626-20-D
MFR ID: 2451988
Fluke Calibration 5626-20-D Secondary PRT Probe, 1/4 X 20 in, 5-pin DIN for Tweener Thermometers Buy Now $3,210.00
5626-20-G
MFR ID: 2452003
Fluke Calibration 5626-20-G Secondary PRT Probe, 1/4 X 20 in, Gold Pins Buy Now $3,210.00
5626-20-I
MFR ID: 2452015
Fluke Calibration 5626-20-G Secondary PRT Probe, 1/4 X 20 in, INFO-CON for 1521 or 1522 Buy Now $3,210.00
5626-20-J
MFR ID: 2452026
Fluke Calibration 5626-20-J Secondary PRT Probe, 1/4 X 20 in, Banana Plugs Buy Now $3,210.00
5626-20-L
MFR ID: 2452032
Fluke Calibration 5626-20-L Secondary PRT Probe, 1/4 X 20 in, Mini Spade Lugs Buy Now $3,210.00
5626-20-M
MFR ID: 2452044
Fluke Calibration 5626-20-M Secondary PRT Probe, 1/4 X 20 in, Mini Banana Plugs Buy Now $3,210.00
5626-20-P
MFR ID: 3377070
Fluke Calibration 5626-20-P Secondary PRT Probe, 1/4 X 20 in, INFO-CON for 1523 or 1524 Buy Now $3,210.00
5626-20-S
MFR ID: 2452059
Fluke Calibration 5626-20-S Secondary PRT Probe, 1/4 X 20 in, Spade Lugs Buy Now $3,210.00
5627-series
5627A-6-G
MFR ID: 3003666
Fluke Calibration 5627A-6-G Precision Industrial RTD Probe, 12 X 1/4 in, Golden Pins Buy Now Sale $760.50
(Reg. $845.00)
5627A-6-S
MFR ID: 3003712
Fluke Calibration 5627A-6-S Precision Industrial RTD Probe, 12 X 1/4 in, Spade Lugs Buy Now Sale $760.50
(Reg. $845.00)
5627A-9-G
MFR ID: 3003747
Fluke Calibration 5627A-9-G Precision Industrial RTD Probe, 12 X 1/4 in, Golden Pins Buy Now Sale $760.50
(Reg. $845.00)
5627A-9-S
MFR ID: 3003799
Fluke Calibration 5627A-9-S Precision Industrial RTD Probe, 12 X 1/4 in, Spade Lugs Buy Now Sale $760.50
(Reg. $845.00)
5627A-12-A
MFR ID: 3055537
Fluke Calibration 5627A-12A Base Model Secondary PRT Probe; 12 x 1/4" Dia., -200 to 300C Buy Now Sale $760.50
(Reg. $845.00)
5627A-12-S
MFR ID: 3003630
Fluke Calibration 5627A-12-S Precision Industrial RTD Probe, 12 X 1/4 in, Spade Lugs Buy Now Sale $760.50
(Reg. $845.00)