Model 001 & 002 Flowmeter Operating Manual
MANUAL-1550859975-1 | issue: 1.1
©
2021
– Valeport Ltd
Page | 5
4
Operation with 0012B Control Display Unit
4.1 Introduction
The Valeport Model 0012B Impeller Current Display Unit is a Real Time Speed display unit,
offering user selectable measurement of pulse against time averaging (moving, fixed or free
running) for all contact closure current meters, including those of other manufacturers. The 0012B
contains calibration details for the Valeport meters BFM001, 002, 004, 007 and 050, and allows
calibration coefficients for 4 other meters to be programmed in. User specific names for other
meter calibrations can also be entered for ease of user identification.
The 0012B also calculates standard deviation of the measured average data, battery low indicator
and optional . A logging facility is also optional, with a solid state memory providing 100 records.
4.1.1 Physical Specification
Size:
244mm (L) x 163mm (H) x 94mm (W)
Weight:
2kg
Material:
Moulded ABS Plastic
Sealed:
IP67 (10 seconds at 0.3 metres)
Strap:
Adjustable Shoulder Strap
Power:
8 'C' cells, providing life of approximately 400 hours (100 hours with backlight)
Temperature:
Operating range, -5 to +50°C.
4.1.2 Connectors
Jack Plug:
For connection to existing Valeport current meters
4-Way Mil Spec:
RS 232 connection for PC. Input for loading of calibration data and output of
real time averages or stored data (if logging option is fitted).
Pressure Valve:
Passive waterproof pressure equalising valve, to compensate for changes in
temperature.
4.1.3 Measurement Methods
4.1.3.1 Average Data
The average rates and speeds are computed as follows:
In TIME mode:
The number of whole pulses measured / average time set in seconds
In PULSE mode:
The number of pulses set / measured elapsed time for the pulses
If an average period is terminated early, then the calculation is carried out as follows:
In TIME and PULSE mode:
The number of whole pulses completed / elapsed time for the pulses [measured to 0.001
secs]
4.1.3.2 Real Time Data