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F600 AC DC Thermometry Resistance Bridge. AC DC Thermometry Resistance Bridge.
F600 Series AC & DC Thermometers ±2PPM (±0.5mK at TPW to ±2.5mK Full Range).
F600 Thermometry Bridge is a new series of high performance resistance thermometry bridges is unique in offering the latest technology in both AC and DC measurement. Integrity in measurement has always bee a hallmark of ASL instruments and F600 Thermometry Resistance Bridge continues that tradition.
However, now you have an even lower frequency AC bridge, or switched DC measurement technology to choose from, according to your needs.

AC DC Thermometry Resistance Bridge

Model  Description 
F600  AC DC Thermometry Resistance Bridge.

F600 Thermometry Resistance Bridge is the first product from ASL that is available as an AC Bridge and as a DC instrument enabling you to choose the best suited to your application, or to compliment your existing equipment.
The AC bridge now operates at the lower frequency of 25Hz (50Hz supply) or 30Hz where your power supply is 60Hz, while the DC version provides a switched DC sensor current to simulate the advantages of AC - AC bridges eliminate entirely the errors caused by the thermal emf's* in the probe or associated wiring.

F600 Thermometry Bridge is easy of use and is versatile in operation.
You can choose and save what information you want to display on-screen as an aid to efficient working.
You can also choose to select or change functions, such as probe current. by a dedicated switch or from within the menu displayed on the screen.
For multi-channel applications, F600 Bridge operates with ASL's existing switch box systems to allow system expansion of up to 60 channels

Thermometry Resistance Bridge Specification
  F 600 AC F600 DC
Accuracy (ppm) ±2ppm of reading or 20 digits,
whichever is greater
±3ppm of reading or 30 digits,
whichever is greater
Accuracy (temperature) ±2.5mK over range, ±0.5mK at 0°C ±4mK over range, ±0.8mK at 0°C
Resolution 0.1mK 0.1mK
Range (ratio) 0 to 4.999 999 0 n/a
Range (ohms) 0 to 500 0 to 500K
Range (temperature -260 to +962°C -260 to +962°C
Internal Ref. (ohms) 25 & 100 25, 100, 10K & 66K
Carrier Current (mA) 0.1, 0.2, 0.5, 1, 2, 5 &10 +√2 multiplier   0.005, 0.01, 0.02, 0.05, 0.1, 0.2,
0.5, 1, 2, 5 &10 +√2 multiplier
Carrier Frequency 25 or 30 Hz (50 or 60Hz supply) Switched DC
Bandwidth 10, 5,1, 0.1 & 0.01Hz 10, 5,1, 0.1 & 0.01Hz
Comms Port USB USB
Supply Voltage 230, 220, 120, 100 VAC ±10% 230, 220, 120, 100 VAC ±10%
Supply Frequency 47 - 63 Hz 47 - 63 Hz
Service Temperature 0 to +40°C 0 to +40°C
Dimensions (mm) 150 x 455 x 450 (HxWxD) 150 x 455 x 450 (HxWxD)