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Specification

Pulse Totalizer for Hygrometers, Flowmeters and Powermeters :

* 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

Basic specifications :

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
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)