MULTICAL® 403
Kamstrup A/S · Technical description · FILE100000166_B_EN-55121689_M1_07.2023
13 Test and calibration
MULTICAL® 403 can be tested as a complete energy meter or as a split meter depending on the available equipment.
The high-resolution test registers are read from the display, via serial data reading or via high-resolution pulses.
Before test as a split meter, disassemble the meter and screw off the sensor set. Subsequently, the calculator is
tested separately by means of Kamstrup calibration equipment for MC403 and METERTOOL HCW. Flow sensor and
temperature sensors are tested separately too. During test of the flow sensor it is unimportant whether the
temperature sensors are mounted.
For fast test/calibration of MULTICAL® 403, the meter has a test mode with an extra fast measuring sequence. In test
mode heat energy, cooling energy and volume are displayed with higher resolution than normal in order to shorten
the test duration.
MULTICAL® 403 uses more current in test mode, but under normal circumstances a meter is only in test mode a few
times during its lifetime, and this does not influence the meter's battery lifetime.
13.1 Meter cycle
The meter supports the following three configurable modes with different turnaround times:
• 4 s. 0.5 s. (8/sequence)
• • • 4 s. 1 s. (4/sequence)
• 16 s. 4 s. (4/sequence)
• • 32 s. 4 s. (8/sequence)
• 64 s. 4 s. (16/sequence)
The flow is measured several times during each sequence. Temperature measurement and all calculations
(temperature, flow, volume, energy, etc.) are carried out once per sequence.
Choice of mode
Configuring the meter, you select the integration mode, which the meter can use under ”Integration mode >L<”. No
matter the selected Integration mode, the meter can be set in ”Test mode” by breaking the test seal and short-
circuiting the test points. The meter remains in test mode until the supply is disconnected and the meter is restarted,
or for 9 hours.
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