Fluke Calibration 9144 Metrology Well

Najważniejsze cechy

Lightweight, portable, and fast
Built-in two-channel readout for PRT, RTD, thermocouple, 4-20 mA current
True reference thermometry with accuracy to ±0.01 °C
On-board automation and documentation
Metrology performance in accuracy, stability, uniformity, and loading

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Omówienie produktu: Fluke Calibration 9144 Metrology Well

High-performance field dry-well for industrial temperature calibration

Built-in Features for Large Workloads and Common Applications

The Fluke 9144 Metrology Well is built to handle a wide range of field applications with speed, precision, and convenience. Whether calibrating 4–20 mA transmitters or thermostatic switches, the 9144 provides:

Wide temperature range coverage with three model options: –25 °C to 660 °C
Compatibility with PRTs, RTDs, thermocouples, and transmitters
Optional “Process” version (914X-X-P) with a built-in two-channel thermometer readout, including 24 V loop power for 4–20 mA transmitters

Each process version:

Accepts an ITS-90 reference PRT
Features built-in readout accuracy from ±0.01 °C to ±0.07 °C
Stores individual sensor calibration constants in the probe housing for interchangeable use
Includes a second user-selectable channel for 2-, 3-, or 4-wire RTDs, thermocouples, or transmitters

With Field Metrology Wells, you no longer need to carry multiple devices into the field—one instrument handles it all.

Calibrate the Entire Loop, Not Just the Electronics

Traditionally, only the electronics of a temperature transmitter were calibrated—leaving the sensor unchecked. However, studies show that 75% of transmitter system error originates in the sensor. The 9144 enables full-loop calibration for more accurate and reliable results.

Onboard Automation and Documentation

The process versions include non-volatile memory for storing up to 20 calibration tests, each with:

Unique alphanumeric ID
Block temperature
Reference temperature
UUT values
Error, date, and time

Results can be:

Viewed directly on the front panel
Exported via included Model 9930 Interface-it software for reports or raw ASCII data
Integrated with the 1586A Super-DAQ for automated sensor calibrations

Automated Thermostatic Switch Testing

Field Metrology Wells support both auto and manual test setups:

Auto setup requires just the nominal switch temperature and runs a 3-cycle calibration, displaying the dead band result
Manual setup lets you fully customize ramp rate, cycle count, and test sequence

Both options are quick, accurate, and easy to use.

Uncompromising Metrology Performance

The 9144 meets the six key criteria established by EA guidelines for high-accuracy temperature sources:

Accuracy
Stability
Axial (vertical) uniformity
Radial (well-to-well) uniformity
Loading effects
Hysteresis

Each unit comes with an IEC-17025 NVLAP-accredited calibration certificate, backed by:

High-quality traceable reference PRTs
Rigorous uncertainty analysis
4:1 test uncertainty ratio

Display Accuracy:

9144: ±0.35 °C at 420 °C, ±0.5 °C at 660 °C

Stability:

9144: ±0.05 °C at 660 °C
9142: ±0.01 °C over full range
9143: ±0.02 °C at 33 °C, ±0.03 °C at 350 °C

Radial Uniformity: ±0.01 °C

Axial Uniformity: ±0.05 °C at 40 mm (1.6 in)

Designed for the Field

These wells are engineered for real-world environments:

Lightweight and portable: under 8.2 kg (18 lb)
Compact footprint for ease of transport
Fast time to temperature for productivity in the field
Environmental compensation (patent pending) guarantees performance across 13 °C to 33 °C, even in unstable surroundings

User-Friendly Operation

Using the 9144 is straightforward:

Large, easy-to-read LCD display
Intuitive function keys and menu navigation
Dedicated “SET PT.” button for quick temperature input
Visual and audible stability indicators
Preprogrammed calibration routines stored in memory
All inputs are accessible from the front panel

The Metrology Advantage

Fluke Metrology Wells are engineered by the same teams who support national labs and define the Kelvin—not by companies that “dabble” in temperature calibration.

Fluke’s deep expertise in metrology ensures:

Published, verifiable specs
Unmatched temperature performance
Trusted results for demanding industrial environments

Small Dry Wells for Big Field Applications

The 9142, 9143, and 9144 Field Metrology Wells deliver industrial-grade features with laboratory-level accuracy. When combined with the process option, these tools become powerful all-in-one calibration instruments.

Temperature range coverage: –25 °C to 660 °C

Applications:

Transmitter loop calibrations
Comparison calibrations
Thermocouple checks

Field Metrology Wells offer the perfect blend of portability, speed, accuracy, and automation—ideal for demanding field calibration tasks.

Specyfikacje: Fluke Calibration 9144 Metrology Well

Base Unit Specifications
Temperature range at 23°C	50°C to 660°C (122°F to 1220°F)
Display accuracy	±0.35°C at 50°C ±0.35°C at 420°C ±0.5°C at 660°C
Stability	±0.03°C at 50°C ±0.04°C at 420°C ±0.05°C at 660°C
Axial uniformity at 40 mm (1.6 in)	±0.05°C at 50°C ±0.35°C at 420°C ±0.5°C at 660°C
Radial uniformity	±0.02°C at 50°C ±0.05°C at 420°C ±0.10°C at 660°C
Loading effect (with a 6.35 mm reference probe and three 6.35 mm probes)	±0.015°C at 50°C ±0.025°C at 420°C ±0.035°C at 660°C
Hysteresis	0.1
Operating conditions	0°C to 50°C, 0% to 90% RH (non-condensing)
Environmental conditions (for all specifications except temperature range)	13°C to 33°C
Immersion (well) depth	150 mm (5.9 in)
Insert OD	24.4 mm (0.96 in)
Heating time	15 min: 50°C to 660°C
Cooling time	25 min: 660°C to 100°C 35 min: 660°C to 50°C
Resolution	0.01°
Display	LCD, °C or °F user-selectable
Size (H x W x D)	290 x 185 x 295 mm (11.4 x 7.3 x 11.6 in)
Weight	7.7 kg (17 lb)
Power requirements	100 V to 115 V (±10%), 50/60 Hz, 1400 W 230 V (±10%), 50/60 Hz, 1800 W
Computer interface	RS-232 interface
Calibration	NVLAP accredited calibration included
Automation	Use the 1586A Super-DAQ to automate temperature sensor calibration
-P Specifications
Built-in reference thermometer readout accuracy (4-wire reference probe)¹	±0.010°C at -25°C ±0.015°C at 0°C ±0.020°C at 50°C ±0.025°C at 150°C ±0.030°C at 200°C ±0.040°C at 350°C ±0.050°C at 420°C ±0.070°C at 660°C
Reference resistance range	0 ohms to 400 ohms
Reference resistance accuracy²	0 ohms to 42 ohms: ±0.0025 ohms 42 ohms to 400 ohms: ±60 ppm of reading
Reference characterizations	ITS-90, CVD, IEC-751, Resistance
Reference measurement capability	4-wire
Reference probe connection	6-pin Din with Infocon Technology
Built-in RTD thermometer readout accuracy	NI-120: ±0.015°C at 0°C PT-100 (385): ±0.02°C at 0°C PT-100 (3926): ±0.02°C at 0°C PT-100 (JIS): ±0.02°C at 0°C
RTD resistance range	0 ohms to 400 ohms
RTD resistance accuracy²	25 ohms to 400 ohms: ±80 ppm of reading 0 ohms to 25 ohms: ±0.002 ohms
RTD characterizations	PT-100 (385),(JIS),(3926), NI-120, Resistance
RTD measurement capability	4-wire RTD (2-,3-wire RTD w/ Jumpers only)
RTD connection	4 terminal input
Built-in TC thermometer readout accuracy	Type J: ±0.7°C at 660°C Type K: ±0.8°C at 660°C Type T: ±0.8°C at 400°C Type E: ±0.7°C at 660°C Type R: ±1.4°C at 660°C Type S: ±1.5°C at 660°C Type M: ±1.4°C at 660°C Type L: ±0.7°C at 660°C Type U: ±0.75°C at 600°C Type N: ±0.9°C at 660°C Type C: ±1.1°C at 660°C
TC millivolt range	–10 mV to 75 mV
Voltage accuracy	0.025% of reading + 0.01 mV
Internal cold junction compensation accuracy	±0.35°C (ambient of 13°C to 33°C)
TC connection	Small connectors
Built-in mA readout accuracy	0.02% of reading + 2 mV
mA range	Cal 4-22 mA, Spec 4-24 mA
mA connection	2 terminal input
Loop power function	24 V DC loop power
Built-in electronics temperature Coefficient (0°C to 13°C, 33°C to 50°C)	±0.005% of range per°C
1. The temperature range may be limited by the reference probe connected to the readout. The Built-In Reference Thermometer Readout Accuracy does not include the sensor probe accuracy. It does not include the probe uncertainty or probe characterization errors. 2. Measurement accuracy specifications apply within the operating range and assume 4-wires for PRTs. With 3-wire RTDs add 0.05 ohms to the measurement accuracy plus the maximum possible difference between the resistances of the lead wires.