High Accuracy Digital Thermometers DP97 - OMEGA - #1

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K-77 High-Accuracy Digital Thermometer Exceptional Performance and Versatility! Single or dual Pt100 3- or 4-wire sensors are accepted; the DP97 will automatically recognize and select 3- or 4-wire mode. Display of input A, B or A-B (differential) can be selected; a differential “zero function” allows sensor accuracy differences to be eliminated for accurate differential readings. When used with the DP97-Probe1, the system has a temperature range of -50 to 250°C (-58 to 482°F), with an accuracy of ±0.04°C. When used with the DP97-Probe2, the system has a temperature range of 0 to 400°C (32 to 752°F), with an accuracy of ±0.04°C.  Single or Dual Pt100 Inputs, A, B and A-B  High Resolution 0.01°C  Very High Accuracy and Stability  Better Than 40 mK (0.04°C) System Accuracy (Based on DP97-Probe Calibration)  PC Software Included  Digital Matching of Calibrated Sensors  Circuitry Self-Calibrates for Total Stability  3- or 4-Wire Sensors with Automatic Recognition  Readout Directly in °C, °F, Kelvin, and Ù  RS232 (Remote Control and Measure) as Standard  Programmable Analog Output  Bench Mounting (Or Panel Option)  Rechargeable Battery/AC Adaptor A precision portable thermometer for metrology and other exacting laboratory applications, the DP97 is a proven instrument used worldwide as a laboratory and site standard in pharmaceutical, medical, food, environmental testing, R&D, and general industrial applications. It is ideal as the reference standard for temperature calibration baths. Based on a high resolution 20-bit analog-to-digital converter, all measurement computations are performed digitally without drift. The 5-digit LED display provides a readout to 0.01°C over the entire -199.99 to 849.99°C range; alternatively °F, Kelvin or Ù values can be displayed up to 999.99 units. DP97 $2358 Specifications [All values are valid for a nominal 110/240V, 50/60 Hz supply and 20°C (68°F) ambient temperature ±2°C (±35.6°F)]. General Range/Sensor Type: Pt100 to IEC 751 (ITS 90), -199.99 to 849.99°C (327.98 to 1561.98°F), Ro = 100 Ù Input Channels: 2, each with 3- or 4-wire connection and automatic recognition (with manual override) Overall Instrument: ±0.02°C ±1 digit for range -200 to 500°C (-328 to 932°F) Accuracy (4 Wire): ±0.005% reading ±1 digit for range 500 to 850°C (932 to 1562°F) Overall System: Better than ±0.04°C (±32.07°F) with DP97-Probe1 precision probe Accuracy (4 Wire): -50 to 250°C (-58 to 482°F) with DP97-SYS-CAL calibration Linearization Conformity: ±0.01°C Stability vs Ambient Temperature: 0.0025°C/°C (0.0045°F) Warm-Up Time: Negligible under normal ambient conditions; 5 to 10 minutes for full stability unless stored at low temperature Pt100 Sensor Current: 0.5 mA nominal Display Resolution: 0.01°C, K, °F, Ù Measurement Units: °C, °F, K, Ù (user selectable) Measurement Modes: Input A or B or A-B (differential); null facility in A-B mode Custom Calibration: Up to 10 calibration values can be allocated (via PC software) to channels A and B; values are retained in non-volatile memory until replaced by user Null Function: Corrects differential temperature readout between the 2 sensors to zero Sensor Lead Resistance: 25 Ù each lead maximum Supply: Internal rechargeable batteries; AC line 110/220V, 50/60 Hz; adaptor included; battery charge life up to 12 hours dependent on pattern of usage; charger requirement 10 to 11.5 Vdc, 1 A DP97, $2358, shown smaller than actual size.