Contents 1 Preliminary note ���������������������������������������������������������������������������������������������������4 1�1 Symbols used ������������������������������������������������������������������������������������������������4 2 Safety instructions �����������������������������������������������������������������������������������������������4 3 Functions and features ����������������������������������������������������������������������������������������5 4 Function ���������������������������������������������������������������������������������������������������������������5 4�1 Processing of the measured signals ��������������������������������������������������������������5 4�2 Volumetric flow monitoring �����������������������������������������������������������������������������6 4�3 Consumed quantity monitoring (totalizer function) ����������������������������������������6 4�3�1 Consumed quantity monitoring with pulse output ���������������������������������6 4�3�2 Consumed quantity monitoring with preset meter ��������������������������������6 4�4 Monitoring of temperatures ����������������������������������������������������������������������������7...
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9�3�3 Settings for meter reset controlled by the program ����������������������������17 9�3�4 Switch off the meter reset �������������������������������������������������������������������18 9�4 User settings (optional) ��������������������������������������������������������������������������������18 9�4�1 Determine the standard unit of measurement for volumetric flow ������18 9�4�2 Configuration of the standard display �������������������������������������������������18 9�4�3 Setting the damping of the measured values �������������������������������������18 9�4�4 Setting the error behaviour of OUT1 / OUT2 ��������������������������������������18 9�5 Service-Funktionen ��������������������������������������������������������������������������������������19...
1 Preliminary note 1.1 Symbols used ► Instruction > Reaction, result […] Designation of buttons, switches or indications → Cross-reference Important note Non-compliance can result in malfunctions or interference� 2 Safety instructions • Please read this document prior to installing the unit� Ensure that the product is suitable for your application without any restrictions�...
For the scope of validity cULus: The device shall be supplied from an isolating transformer having a secondary Listed fuse rated as noted in the following table� Overcurrent protection Control-circuit wire size Maximum protective device rating Ampere (0�13) (0�20) (0�32) (0�52) (0�82) (1�3)
4.2 Volumetric flow monitoring The flow rate is monitored by a calorimetric measuring system, the measured signals by the electronics� • 2 switching signals for volumetric flow limit values can be provided (output 1 and output 2). For the switching functions → 4.5. • An analogue signal proportional to the volumetric flow (4���20 mA) can be provided on output 2. For the analogue functions → 4.6.
4.4 Monitoring of temperatures • The unit detects the current system temperature and shows it on the display (→ chapter 10.2 Changing the display unit in the Run mode). 4.5 Volumetric flow monitoring / switching function OUTx changes its switching state if it is above or below the set switching limits (SPx, rPx)�...
4.6 Volumetric flow monitoring / analogue function • The analogue start point [ASP] determines at which measured value the output signal is 4 mA� • The analogue end point [AEP] determines at which measured value the output signal is 20 mA� Minimum distance between [ASP] and [AEP] = 25 % of the final value of the measuring range�...
5.2 Installation conditions To achieve the specified measurement accuracy, the following mounting condi- tions must be adhered to: defined inflow / outflow pipe lengths, defined flow cross- sectional area, fixed installation depth and correct positioning of the measuring elements� The unit is delivered mounted on a pipe section meeting these conditions� In case of turbulances at the inflow side additional baffled pipes (B) are recom- mended: changes to the pipe diameter...
5.3 Mounting position • Permitted mounting positions: pipe length vertical, any position (fig� 1, 2), pipe length horizontal, unit vertical (fig� 3, 5), unit on side, pipe length left (fig� 4)� • Avoid the mounting position shown in fig� 6 (unit on side, pipe length right)� If the flow rate is low, the specified measurement accuracy cannot be adhered to�...
5.4 Installation in pipes Integrate the pipe length so that the direction of flow (1) and the marking arrow (2) show in the same direction� 6 Electrical connection The unit must be connected by a qualified electrician� The national and international regulations for the installation of electrical equipment must be adhered to�...
7 Operating and display elements 1 2 3 4 5 6 7 8 Mode/Enter Set 1 to 8: Indicator LEDs - LED 1 = current volumetric flow in standard cubic feet/minute (scfm)� - LED 2 = current volumetric flow in standard cubic feet/hour (scfh)� - LED 3 = current consumed quantity since the last reset in standard cubic feet (scf)�...
8 Menu 8.1 Menu structure scfm scfh (scf)* °F scfm = [Mode/Enter] / = [Set] scf = current meter count in standard cubic feet (scf)* = stored meter count in standard cubic feet...
8.2 Explanation of the menu Maximum / minimum value for volumetric flow, at which OUT1 changes its SP1/rP1 switching status� ImPS Pulse value� ImPR Pulse repetition active (= pulse output) or not active (= function preset meter)� Output function for OUT1 (volumetric flow or consumed quantity): - Switching signal for limit values: hysteresis function or window function, normally open or normally closed�...
9 Parameter setting During parameter setting the unit remains in the operating mode� It continues its monitoring function with the existing parameters until the parameter setting has been completed� 9.1 General parameter setting 3 steps must be taken for each parameter set: Parameter selection ►...
• Change from menu level 1 to menu level 2 ► Press [Mode/Enter] until [EF] is displayed� Mode/EnterSet ► Press [Set] briefly� > The first parameter of the sub-menu Mode/EnterSet is displayed (here: [HI])� • Locking / unlocking The unit can be locked electronically to prevent unintentional wrong settings� ►...
9.2.2 Settings for limit value monitoring with OUT2 ► Select [OU2] and set the switching function: [Hno] = hysteresis function/normally open, [Hnc] = hysteresis function/normally closed, [Fno] = window function/normally open, [Fnc] = window function/normally closed� ► Select [SP2] and set the value at which the output switches� ►...
9.3.4 Switch off the meter reset ► Select [rTo] and set [OFF]� The meter is only reset after overflow (= factory setting)� 9.4 User settings (optional) 9.4.1 Determine the standard unit of measurement for volumetric flow ► Select [Uni] and set the unit of measurement: [SCFm] = flow rate in standard cubic feet / minute�...
9.5 Service-Funktionen 9.5.1 Reading the min./max. values for volumetric flow ► Select [HI] or [LO] and press [Set] briefly� [HI] = maximum value, [LO] = minimum value� Delete memory: ► Select [HI] or [LO]� ► Press [Set] and keep it pressed until [----] is displayed� ►...
9.6 Setting of the preset meter / pulse value (ImPS) 7 setting ranges are available: indication in steps of value 0 �0 4 0 ��� 9 �9 8 0 0�020 scf 0�040���9�980 scf 1 0 �0 0 ��� 9 9 �9 8 0�02 scf 10�00���99�98 scf 1 0 0 �0...
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► Press [Set] and keep it The flashing digit is increased, 9 is followed by 0 and the first pressed� new digit (left) becomes active� 8 �1 8 3 [Set] permanently pressed 8 �1 9 3 [Set] kept pressed 8 �1 0 3 If digit 1 is increased this way, the display changes to the next higher setting range (9 is followed by 10)�...
10 Operation Correct operation and compliance with the measurement accuracy can only be en- sured if the environmental conditions specified in the Technical data are adhered to� Ensure that the maximum pressure range, measuring range and permitted operating temperature are not exceeded� After power on and expiry of the power-on delay time (approx�...
10.4 General operating conditions The unit is maintenance-free for media which will not adhere to the measuring probes� • From time to time check the measuring probes visually for build-up� • If necessary, clean them at regular intervals� To do so, use a suitable cleaning liquid (e�g�...
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