S-UCD-M006 Contact Closure Pulse Input Adapter

Description

The Contact Closure Pulse Input Adapter connects sensors with pulse outputs to loggers with smart-sensor inputs. This smart sensor is compatible with contact closures, such as tipping-bucket rain gauges or reed switches with a maximum input frequency of 2 Hz (2 pulses per second), and a preferred switch-type of normally-open.

Specifications

• Maximum Input Frequency: 2 Hz (2 pulses per second)
• Measurement Range: 0 – 65,533 pulses per logging interval
• Resolution: 1 pulse
• Lockout time: 327 ms ± 10%
• Recommended Input Type: Mechanical contact closure (example: reed switch in a tipping-bucket rain gauge)
• Preferred Switch State: Active low input Normally open
• Edge Detection: Falling edge, Schmitt Trigger buffer (logic levels: low ≤ 0.6 V, high ≥ 2.7 V)
• Minimum Pulse Width: 1 ms
• Input/Output Impedance: 100 KΩ
• Open Circuit Input Voltage: 3.3 V
• Maximum Input Voltage: 3.6 V
• User Connection: 24 AWG wires, 2 leads: white(+), black(-)
• Operating Temperature Range: -40° to 75°C (-40° to 167°F)
• Overall Cable Length: 6.5 m (21 ft.)
• Housing: Weatherproof PVC housing protects input adapter electronics
• Housing Dimensions: 14 x 0.95 cm (5.5 x 0.375 in.)
• Weight: 310 g (11 oz.)
• Bits per Sample: 16
• Number of Data Channels: 1
• Measurement Averaging Option: No (reports the number of pulses over the logging interval)