The Contact Closure Pulse Input Adapter connects sensors with pulse outputs to data 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. See how the pulse recorder works.
- Plug-n-play adapter for pulse output sensors
- Automatically recognized by H21, H22, U30, and ZW data loggers
- 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)
In what environment does this sensor operate?
This sensor operates in indoor and outdoor environments.
What measurements does this sensor support?
The S-UCD-M001 sensor supports the following measurements: Pulse Input and Water Flow
|Maximum input frequency:||2 Hz (2 pulses per second)|
|Measurement range:||0 "€œ 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 K©|
|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:||1 m (3.3 ft.), 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)|