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Revision 01.A.002/2019.10
4. TRANSPORT AND STORAGE
4.1. Transport
When transported, the meters should be packed in individual and/or group packaging and
carried on a covered means of transport. The packaging should be secured against shifting
and atmospheric weather effects.
4.2. Storage
The meter should be stored in the manufacturer's packaging, in a covered room, free of
vapor and corrosive agents, where temperature and relative humidity do not exceed
maximum acceptable limits.
5. WARRANTY
The producer provides warranty under the conditions specified in Product Certificate that
works as a warranty card.
Warranty will be void if the device is not used according to its intended use, the user
does not follow this instruction manual, the device is handled by unqualified
personnel or the meter has been tampered with.
6. CONSTRUCTION
The PMS-970 meter has two measuring inputs –one 0-20mA current input and one 0-10V
voltage input. The current input is equipped with a safety device that protects the measuring
resistor from damage. The input current is limited to 40 mA (typically). When the temperature
of the measuring resistor falls, the safety device will automatically switch off and the system
displays the measurement value again. After the safety device has switched off, the
measurement may be slightly less precise for a while (until the system cools down entirely).
The readout can be freely scaled by the user. Readout rounding and filtering grade can also
be programmed.
Two versions are available: PMS-970T with dual digital/analog display and PMS-970P with
single, big digit display. 26 point, tricolour LED bargraph (PMS970T version) allows easy
judgement of levels and threshold values.
Depending on version, 2 or 4 relay outputs are available. Threshold levels with individual
hysteresis and ON/OFF function are user programmed. The special function called „alternate
output control” allows optimal control of cascaded pumps.
Optionally, the meter can be equipped with an active current output. he range of current
change at the output is programmed separately. The RS-485 communication link and the
transmitter power output are available as standard option. The meter is available in one
universal version of its power system: 20 –250V AC/DC.
The PMS-970 is used for adjustment processes e.g. for temperature (heating / cooling) with
adjustable delay times for engaging output transmitters, level operation or valve operation.
