THERMOMETRY BRIDGE METROLOGY STANDARD

  F300 Precision Site Thermometry Bridge Standard. Accuracy < +/- 0.001 degC.

The F300 Thermometry Bridge is a precision thermometer and high accuracy calibration bridge in one.
F300 AC Thermometry Bridge technology represents the peak of performance in its class for resistance thermometry measurement and exploits the inherent advantages of AC bridge technology to maintain repeatable measurements of the highest precision under practical operating conditions

The F300 Thermometry Bridge allows you to make absolute or differential measurements with probes
having Ro values between 0.25 ohms and 1000 ohms. 
 
Its unique AC circuitry eliminates the effects of long
cables and reduced probe insulation resistance's associated with high temperature thermometry

The F300 Thermometry Bridge can be used with one or more switchboxes for multi channel calibration.

Specification
Accuracy <±1 mK (±1 ppm of full scale ratio) at unity ratio (0.01ºC)
<±2 mK (±2 ppm of full scale ratio) up to 250ºC
<±5 mK (±5 ppm of full scale ratio) up to full scale
<±10 mK with 2.5 ohm and 0.25ohm high temperature thermometers.
Resolution 0.1mK (25 ohm and 100ohm PRT), 1mK (0.25ohm and 2.5ohm PRT)
Linearity <±1 least significant digit (ratio)
Measurement time 10 second for full balance
Warm up time <30 seconds with external reference resistor
Thermometers R0.01 of 1000ohm, 100ohm,25ohm, 10ohm, 1ohm, 0.25ohm and any intermediate value
External reference resistor range 1ohm to 1000ohm AC/DC resistance
Internal Standard Resistor 100 ohm ±50ppm, with t/c of <0.3ppm/°C. A trim control allows calibration against an external standard.
Measurement Range 0-3.999999 ratio of two resistors; 0-3.999999 ohms where Rs = 1 ohm
0-399.9999 ohms where Rs = 100 ohms; 0-1500.000 ohms where Rs = 1000 ohms.
Sensor current 0.1, 1 , 5, or 10mA constant current, stabilized to ±1% of nominal value.
Communications RS232 baud rate can be set between 110 and 19200
IEEE-488 Address selectable from 0 to 31
Analogue outputs ±10V null balance signal (1 Hz bandwidth)
Operating conditions 0°C to 40°C with external reference,, 10 to 90%RH
Power requirements 240,220,120,100 VAC (±10%) selectable on rear panel, 50 or 60 Hz, 45VA max.
Dimensions / weight 442mm (W) x 104mm (H) x 320mm (D). 2U x 19" front panel. 8.5Kg

Accessories
SB148 10 channel auto/manual mulitplexer, with individual preset "keep warm" current
SB148/01 As SB148, with 4 individual "keep warm" currents per channel
SB158 Driver/interface for up to 2 x SB148 or 5B1 48/01 multiplexers (Specify RS232 or IEEE
SB158/01 Driver/interface for up to 6 x 5B148 or SB148/01 multiplexers (Specify R5232 or IEEE)
F300 AS1 System F300 complete with SB148 and SB158 multiplexer in cabinet
F300 AS2 System As AS1 system, but with SB148.01 multiplexer
RW1, 10, 25, 100, 1000 "Wilkins" AC/DC Standard Resistor. Values: 1, 10, 25,100 and 1000 ohms
RR1, 10, 25, 100, 1000 Laboratory AC/DC Standard Resistor. Values: 1, 10, 25,100 and 1000 ohms
RTWE Thermal enclosure for RW & RR resistors
FR4 Four oven controlled resistors in a cabinet Values: 1 to 1000 ohms
F/ACC FA1, FA2 and FA3 cable set
Soft300 ITS-90 temperature measurement and data acquisition software

Please email sales@hotektech.com or call 253-927-6186 if you are interested in a purchase, or
  need additional information.

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