Model 697D

Model 697D Membrane Dissolved Oxygen System (with non-indicating two-wire transmitter)

  • Switch-selectable Measuring Ranges
  • Calibration Adjustment Capability
  • Automatic Temperature Compensation
  • Converts / Transmits Measured values To a Standard 4-20 mA output
  • Simplified Hookup
  • Optional NEMA 4X protection

Operational:

Measuring Range
0-2 ppm, 0-5 ppm, 0-10 ppm or 0-20 ppm; switch selectable
Ambient Conditions
-22 to + 140°F (-30 to + 60°C); 0 to 95% relative humidity, non-condensing
Temperature Compensation
Automatic 32-122°F (0-50°C)
Sensors-to-Transmitter Distance
50 ft.
Output Transmission Distance
Limited only by wire resistance and power supply voltage
Power Requirements
18 to 28 volts DC
Performance (Electrical, 4-20 mA Output, Non-Isolated)
Sensitivity
0.01% of span
Stability
0.1% of span per 24 hrs., non- cumulative
Non-linearity
0.1% of span
Repeatability
0.25% of span or better
Span: 0.015% of span per °C
Response Time
2 minutes to 90% of value Upon step change
Insertion Loss at 20 Ma
9.5 volts DC (475 ohms maximum insertion loss in the 4-20 mA loop)
Mechanical:
Enclosure (optional)
NEMA 4X, polycarbonate, Surface mount
Net Weight (less optional enclosure)
6 1bs. (0.27 Kg) approx.

Ordering Information

 

Dimensions Inches (mm)

Model 697D dimensions
Model 697D2RO Transmitter
Model 697D dimensions
Optional Surface-mount Enclosure