MULTICAL® 803
Kamstrup A/S · Technical description · 5512-2360_A1_GB_02.2019
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Test and calibration
MULTICAL® 803 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.
When testing a split meter, a separate test of the calculator using the Kamstrup calibration equipment for
MULTICAL® 803 and METERTOOL HCW can be carried out. Flow sensor and temperature sensors are tested
separately too.
The calculator can be set to TEST loop when the test seal (verification seal) is broken and the test points are short-
circuited, use the short-circuit pen (6699-278). The calculator remains in test mode until the supply (both backup
battery and mains supply) is disconnected and the calculator is restarted, or for 9 hours.
When the calculator is in the TEST loop, an auto-integration can be initiated by using forced dial-up (keep both arrow
keys pressed until “CALL” appears in the display).
Temperature calibration
The temperature measurement is adjusted and calibrated during the production process and it does not require
further adjustment in the calculator’s lifetime. The temperature circuit can only be adjusted in our factory.
Pulse interface
During test, either optical read-out head with USB plug (6699-099) for serial reading of the high-resolution energy
and volume registers or Pulse Interface (6699-143) with optical read-out head and connection unit for high-
resolution pulse outputs is used. Remember that the calculator must be in the TEST loop.
The high-resolution registers that are provided as output from Pulse Interface always follow the nominal flow size of
the flow sensor that MULTICAL® 803 is configured for.
Flow sensor size
High resolution (pulses)
qp ≤ 1.5
0.001 kWh
0.01 litres
1.5 < qp ≤ 15
0.01 kWh
0.1 litres
15 < qp ≤ 150
0.1 kWh
1 litres
150 < qp ≤ 1500
1 kWh
0.01 m
3
1500 < qp ≤ 15000
0.01 MWh
0.1 m
3
Table 9 High resolution for high-resolution meter count registers provides output, depending on the flow sensor size