| Calibration
Models 719 automatically self- calibrates by measuring internal precision references. Reference data is stored in EEPROM so the adapter board may be easily interchanged. Signal conditioning is provided for thermistors, RTD’s, thermocouples, strain and pressure, resistance and voltage inputs. Standard correction for nonlinear sensors is built in. Custom compensation can be down loaded.
Excitation
A pulsed constant-voltage source is provided for strain and pressure sensors. A pulsed constant-current source is provided for resistive sensors. Lead loss errors from RTD’s, thermistors, and resistors are eliminated with the use of a four-wire circuit. An on-board microprocessor continually scans the active sensor channels. Each channel is amplified, digitized, filtered, converted to engineering units, and stored in on-board memory. This process is independent of host CPU activity. Application Notes
Thermocouples | Lead loss errors | Typical sensor connections | Low-Level Programming of 718/19
Software & Manuals
The included SDK18 software has a DLL for Windows 98/NT/2000.
A ready-to-go data acquisition program, QuickSense, is available as an option.
718 Instruction Manual | Released 3/7/00
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