SUPMEA SUP-2100H Series, Руководство пользователя

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Chapter 2 Starting Measurement
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8
Totalizer
7.digit totals for net, positive and negative flow respectively
Liquid Types Virtually all liquids
Security Setup values Modification Lockout. Access code needs
unlocking
Display 4x8 Chinese characters or 4x16 English letters
Communication
lnterface
RS-232C, baud.rate: from 75 to 57600. Protocol made by
the manufacturer and compatible with that of the FUJl
ultrasonic flow meter. User protocols can be made on
enquiry.
Transducers Model M2 for standard, other 4 models for optional
Transducer Cord
Length
Standard 2 x5 meters, optional 2 x10 meters/ 2 x15 meters
Power Supply
3 AAA Ni.H built.in batteries. when fully recharged it will last
over l0 hours of operation.
1 00 V.2 4 0 VAC for the charger
Data Logger
Built. in data logger can store over 2 0 0 0 lines of data
Manual Totalizer 7-digit press-key-to-go totalizer for calibration
Housing Material ABS
Case Size
100x66x20mm
Handset weight
514g (1.2 lbs) with batteries
Chapter 2 Starting Measurement
2.1 Built.in Battery
The instrument can operate either from the built-in Ni-H rechargeable battery,
which will last over l0 hours of continuous operation when fully recharged, or from
an external AC/power supply from the battery charger.
The battery charging circuits employ a scheme of constant-current and
constant-voltage. It has a characteristic of fast charging at the beginning and very
slow charging when the battery approaches to full recharge. Generally, when the
green LED starts coming on, the battery would be nearly 95% recharged and when
the red LED is off, the battery would be 98% recharged.
since the charging current becomes tapered when the battery recharge is nearly
completed, i.e. the charging current becomes smaller and smaller, therefore, there
should be no over-recharging problem. That means the charging progress can last