F250 Bench Precision High Accuracy Thermometer.
F250 Bench Thermometer provides high accuracy, dual channel temperature measurement with Platinum Resistance Thermometers - PRT's - and uses AC bridge technology as developed by ASL for Standards Laboratories throughout the world.
Model F250 Digital Bench Thermometer requires no regular recalibration, the AC circuit techniques eliminating thermal emf's and drift, while providing excellent long term stability.

Front panel data entry allows you to enter probe calibration data into the F250's memory, so that thermometer resistance can be accurately
converted to temperature in °C, °F or K. A security
key prohibits unauthorized or accidental data entry.

The combination of proven technology and
sophisticated microprocessor control gives you a
reliable, easy to use precision instrument

The 8 or 16 channel SB250 switchbox, or scanner, complements the F250 in appearance and performance.
Adding no extra system errors you can use one or two scanners, one each on Inputs A and B, with manual switching from the keypad or under interface control.
You can choose to connect your probes to front or back panels on both F250 and the scanners.
Configuration examples are; A single scanner attached to Input A, lets you read up to 8 or 16 thermometers directly, or measure them differentially to a probe on Input B. Similarly with two scanners, you can read up to 32 probes directly, or 16 differential pairs. SB250 scanners turn the F250 into a powerful logging system, particularly when used with ASL's LabWindows software

Specification