3125 Surface Probe Calibrator




Product Description

3125 Surface Probe Calibrator

Why buy a non-temperature calibration device designed for test tube sterilization or PC board repair when you can have a true calibration instrument? The 3125 has a uniform surface temperature and reaches temperatures as high as 400°C.

The test surface is milled aluminum for an absolutely smooth and true calibration work area with maximum thermal conductivity. The 12.25-square-inch test surface is large enough to calibrate more than one sensor at a time. The 3125 can be used with a reference surface sensor or PRT. PRTs (3/16″ diameter, such as the 5615) may be inserted through a drilled hole into the center of the block for use as reference thermometers or for easy recalibration of the unit’s display.

With an accuracy of ±0.5 °C to 200 °C and ±1 °C to 400 °C, you can calibrate almost any surface probe, thermistor, thin film sensor, RTD, thermocouple, ribbon sensor, or surface mount cutouts, fuses, and switches. Stability is within ±0.3 °C at 400 °C and uniformity within the center three inches of the surface is ±0.6 °C at 200 °C. Don’t buy “make-do” hot plates when you can have a legitimate calibration tool.


Calibrates surface sensors up to 400°C

Surface probes are difficult to calibrate because it’s hard to find a flat, heated surface that’s stable and uniform. The model 3125 Surface Dry-Well takes advantage of our proprietary 2200 Temperature Controller and gives you the best possible conditions for calibrating surface sensors.


Temperature Range 35 °C to 400 °C
(95 °F to 752 °F)
Display Accuracy ±0.5 °C to 200 °C
±1.0 °C to 400 °C
Stability ±0.2 °C to 300 °C
±0.3 °C to 400 °C
Resolution 0.01 °
Uniformity ±0.3 °C at 100 °C
±0.6 °C at 200 °C
±0.9 °C at 300 °C
±1.4 °C at 400 °C
Heating Time 25 °C to 400 °C : 22 minutes
Cooling Time 400 °C to 100 °C: 65 minutes
Stabilization Time 8 minutes
Controller Fluke Calibration Model 2200, microprocessor based, with RS-232
Readout °C or °F, switchable
Sensor RTD, 100
Heater 325-watt, solid-state controlled
Surface Plate 6061 aluminum; top surface machine finished to 0.0008 mm (0.000032 in), 96 mm (3.8 in) diameter accessible
Power 115 VAC (±10 %), 2.8 A or 230 VAC (±10 %), 1.4 A, specify, 50/60 Hz, 325 W
Weight 3.2 kg (7 lb.) with 2200 Controller
NIST-Traceable Calibration Data at 50 °C, 120 °C, 190 °C, 260 °C, 330 °C, and 400 °C

Models and Accessories

Model Name Description
3125 Surface Calibrator (includes detachable Model 2200 Controller)

Accessories common to all models  :

Accessory Description
HART DRYWELL CABLE An interface cable kit that includes a null modem to connect the Fluke 754 with Fluke Calibration dry – wells and Micro – Baths to automate and document the calibration of temperature sensors and transmitters in the field or at the bench.

About us

บริษัท เมสเชอร์เมนท์เอเชีย จำกัด
Measurementasia Co.,Ltd.

99 Moo. 3, Khlong 5, Khlong Luang,
Pathumthani 12120



Helps / Questions