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DDM 900 |
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| High precision bench instrument | The DDM 900 is designed for precise temperature measurements as demanded in calibration-laboratory use and quality assurance. The accuracy is adapted to the uncertainties of fix-point-cells for precise sensor calibrations. Pt 10-, Pt-25- and Pt 100-Sensors can be used at the same time. The resolution of up to 0,02 mK often is needed in physical and chemical laboratories. |
| Product features |
• Accuracy: 5 mK • Resolution: 1 mK • Range: -220 °C to +1200 °C • Pt100, -25 and Pt10-Sensors • User defined coefficients for ITS 90 and EN60751 • Fast measurements: up to 8/s • Excellent long-time stability • Compensation of self heating error • No impairment of the measurement results through parasitic thermo voltage • Extensible up to 81 measuring channels • True 4-wire-technique with Lemo-plugs • High EMC • High data reliability in terms of sensor coefficients |
| Available accessoires |
- external multiplexers with 8 or 16 channels
(up to 5
switches may be cascade connected) - PC software for operation of instrument and measuring data acquisition - temperature sensors |
| Technical data | The following specifications are only valid for a nominal operating voltage and a environmental temperature of 23°C. |
| Measuring range |
-200°C up to 962°C (according to ITS-90) -200°C up to 850°C (according to DIN EN60751) |
| Resolution | 1 mK |
| Measuring uncertainty | 10 mK (optionally 5 mK in the range of -50°C up to 250°C) |
| Measuring channels | 2 (optionally up to 81 with external multiplexers) |
| Sensors | Pt-100/Pt-25/Pt-10 in a four-conductor-technology |
| Connectors | Lemo 1S, quadripolar, in front panel |
| Measuring current | about 0,5 mA switched DC (about 1 mA for Pt-25) |
| Measuring time | about 1 sec. per channel, about 0,1 sec. per channel with reduced resolution |
| Long-term stability | 5 mK / year |
| Temperature coeff. | 1 mK/K |
| Display | LCD, LED backlight, 2 lines 16 characters, 9 mm height |
| Units | °C, °F, K, Ohm |
| Interface | RS-232, isolated |
| Operation | menu orientated, alternatively controllable by your PC |
| Memory | 128 KB (optionally 512 KB) |
| Suppy | 230 V, 50 Hz / 115 V, 60 Hz about 15 VA |
| Size | 260 x 80 x 240 (width x height x depth in mm) |
| Weight | about 2,5 kg |
| Order No. | 5020-0900 |
| Download DDM900 Spec | |
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©Industrial Temperature Sensors Ltd. |
Ph.00353-45-898164 Fax.00353-45-896521 |
