The model CTR6000 resistance thermometry bridge is a high-performance DC resistance thermometry bridge. The CTR6000 provides the latest technology in DC measurement. This way of measurement has always been a hallmark of ASL instruments and the CTR6000 continues that tradition.
The CTR6000 series features a large graphic display, combining versatility with ease of use. As well as the flexible menu options on the display, the CTR6000 also includes buttons dedicated to select common functions. For multi-channel applications, the CTR6000 can be used with ASL's switch box systems CTS9000.
Data can be recorded and stored on a PC through the ULog temperature measurement and data acquisition software. The DC version provides a switched DC sensor current to simulate the advantages of AC measurement. In addition to measuring platinum resistance thermometers (PRTs), the CTR6000 also measures NTC thermistors.
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 Specifications
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Model CTR6000
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Input channels
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2 on the main device (one platinum resistance thermometer (PRT) or thermistor + one reference
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resistor)
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60 over multiplexer CTS9000
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Input connections
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4 x BNC + shield (front panel)
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Data entry format
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ITS 90 and CVD for calibrated probes; or EN 60751 for uncalibrated probes
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Steinhart and Hart for NTC thermistors
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Measuring ranges
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Sense current
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10 µA, 20 µA, 100 µA, 200 µA, 1 mA, 2 mA, 10 mA
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Sense current mulitpliers
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0.5 and ?2
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Temperature range
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-200 ... +962 °C, depending on thermometer probe
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Resistance range
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0 … 500 k?
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Internal resistors
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Values
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25 ?, 100 ?, 10 k?, 100 k?
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Thermal stability
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±0.1 ppm/°C
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Accuracy
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±0.01 % (uncalibrated)
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Accuracy
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PRT 1)
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±3 ppm full range (ratio)
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±3 ppm of reading or 0.0003 ? whichever greater (resistance)
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±0.8 mK at 0 °C, ±3 mK full range (temperature)
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Thermistor
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0 ... 10 k? ±10 ppm of reading or 0.01 ? (whichever value is greater)
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10 ... 50 k?
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±20 ppm of reading
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50 ... 100 k?
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±40 ppm of reading
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100 ... 500 k?
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±100 ppm of reading
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Display
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Screen
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large graphic VFD display screen
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Units
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ratio, °C, °F, K or ?
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Resolution
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0.1 mK
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Functions
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Real-time clock
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integrated clock with date
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Voltage supply
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Power supply
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AC 90 ... 264 V, 47 ... 63 Hz; universal rear input on rear panel
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Power consumption
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max. 95 VA
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Permissible ambient conditions
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Operating temperature
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15 ... 25 °C
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Storage temperature
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-20 ... +50 °C
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Communication
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Interface
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USB, RS-232 or IEEE
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Case
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Dimensions
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455 x 150 x 450 mm (W x H x D)
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Weight
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7 kg
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