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| Data Logger (Pulse input/ 1channels) |
PULSE LOGGER 3639-20 |
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| Pulse Totalizer for Hygrometers, Flowmeters and Powermeters |
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- Accumulates up to 9,999 counts
- Noise filtering to minimize the possibility of miscounts
- Alarm output provided (with selectable threshold)
- Up to 32,000 measurements data can be collected with the optional 3911-20 for processing by PC
- Special software bundled with the 3911-20 enables storing of the recording time, interval, start, end, method and comments in the instrument’s memory
- Non-volatile memory preserves collected data even when the battery is depleted
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| Basic specifications |
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| Measurement items |
Pulse input
- No-voltage input connection (e.g., switch or relay) counts when contact across terminals changes from short to open
- Voltage input: +1.5 to 45 V high, 0 to 0.2 V low (logic state is undetermined between 0.2 and 1.5 V) A count occurs when voltage level becomes high
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| Input channels |
1 channel |
| Measurement range |
Display: 9,999 counts/interval, "OF" is displayed for 10,000+ counts (internal data is also "OF") |
| Accuracy |
±1 dgt. or better |
| Data memory |
32000 data × 1ch (1-minute interval, total 22 days) |
| Recording interval |
1 to 30 seconds, 1 to 60 minutes, 1 day, 16 settings |
| Power supply |
4 x 1.5 V, LR03 (AAA) alkaline dry cell batteries, lifetime approx. 3 months (recording interval 10 minutes) |
| Dimensions, mass |
57.5 mm(2.26 in)W × 86.5 mm(3.41 in)H × 30 mm(1.18 in)D, 130 g (4.6 oz) |
| Accessories |
LR03 alkaline dry cell batteries (4), CONNECTION CABLE 9629 (for measurement input, 1), CONNECTION CABLE 9632 (for alarm output, 1) |
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