Related Manuals for BEKA BA578C
Summary of Contents for BEKA BA578C
- Page 1 BA578C panel mounting indicating temperature transmitter issue 4 Issue: 4 26th September 2008...
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Page 2: Table Of Contents
11. Backlight 5.8 Calibrating the internal references 5.8.1 Conditioning internal references 5.8.2 Voltage input reference 5.8.3 3-wire RTD reference 5.8.4 4-wire RTD reference 5.8.5 Output current reference The BA578C is CE marked to show compliance with the European EMC Directive 2004/108/EC... - Page 3 3 wire RTD input; high resolution display in °C; 4 to 20mA output corresponding to an input and display of 0.0 to 100.0°C. If the BA578C is set to your requirements before putting it into use you should refer to: Section 3...
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Page 4: Description
Using calibration display backlight is available. displayed information stored in instrument memory. The BA578C transmitter is housed in a 144 x 72mm panel mounting DIN enclosure with an IP65 front 2.1 Controls panel. All functions of the transmitter can be programmed on-site via four front panel push-buttons - see Figs 5A and 5B. -
Page 5: Electrical System Design
3. ELECTRICAL SYSTEM DESIGN Fig 3 shows the overall dimensions of the BA578C. The recommended panel cut-outs are as detailed below A BA578C indicating transmitter will operate from any voltage between 10 and 30V. When designing a) DIN 43 700 a loop it is therefore necessary to ensure that the 138.0 +1.0 / -0.0mm... -
Page 6: Emc
Up and Down buttons to change the flash- 4.3 EMC ing digit, and the P push-button to move to the next The BA578C complies with the requirements of the digit. If the correct code is entered pressing E will European EMC Directive. For specified immunity cause the first parameter 'InPut' to be displayed. -
Page 7: Summary Of Programme Menu Functions
Display Summary of Programme Menu information is stored in permanent memory. functions All new BA578C indicators are supplied calibrated 'InPut' Transmitter input as requested at the time of ordering. If calibration Conditions the transmitter to accept... -
Page 10: Description Of Programme Menu Functions
Display Summary of Programme Menu Display Summary of Programme Menu functions functions 'COdE' Security code For Voltage Inputs Defines a four digit numeric code which must be entered to gain access to the 'd.P.' Decimal point programme trim menus. Positions the dummy decimal point Default code 0000 disables the security between any of the display digits or function and allows unrestricted access... -
Page 11: Display Units
5.3.2 Display units 'dEg' 5.3.5 Input open circuit drive 'burn' The transmitter display may be in degrees If the thermocouple fails and becomes open circuit, centigrade or Fahrenheit. To check or change the the transmitter can be conditioned to drive the display units select 'dEg' from the sub-menu and display and the 4/20mA output current up or down press P to reveal the current setting. -
Page 12: Display Resolution
Display Resolution When the least significant digit has been adjusted, press E to return to the ''dISP' prompt. High 5.5.3 High input & display calibration 'In-HI' 5.5 For Voltage Inputs This function defines the higher voltage input and When the transmitter is conditioned for a voltage the corresponding transmitter display. -
Page 13: Security Code
Programme Menu and press P which will cause the transmitter to display the current security code. If the BA578C transmitter is calibrated against an Each digit of the code can be changed using the Up external... -
Page 14: 3-Wire Rtd Reference
5.8.2 Voltage input reference 'U.IP' 'Ent' prior to returning to the '4rtd' prompt. This With the BA578C input terminals connected to an completes adjustment of this reference. accurate voltage calibrator, select 'U.IP' from the 'Cond' sub-menu and press P. -
Page 15: Trim Menu
6. TRIM MENU The Trim Menu is the preferred method of calibration. It enables the BA578C transmitter to be adjusted using an external voltage, resistance or temperature calibrator. For maximum accuracy the complete loop including the thermocouple or resistance thermometer may be calibrated by heating or cooling the primary element. -
Page 16: Periodic Re-Calibration Using Trim Menu
'tHC' is displayed. If the BA578C internal references are used to make Step 4 Define type of thermocouple frequent calibration changes, we recommend that With 'tHC' displayed press P to enter these references should be initially checked once the thermocouple sub-menu. - Page 17 4.000mA, the E push-button should be The following steps explain how, using the Trim operated to return the transmitter to the Menu, the BA578C transmitter may be calibrated 'ZEro' prompt. against an external reference, such as a voltage This completes calibration at -10.0 source or temperature calibrator.
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Page 18: Maintenance
20mA. Check calibration. 8.2 Fault finding after commissioning ENSURE PLANT SAFETY BEFORE STARTING MAINTENANCE If a BA578C fails after it has been functioning correctly the procedure shown in section 8.1 should be followed. -
Page 19: Servicing
We recommend that suspect instruments are returned to BEKA associates or our local agent for repair. 8.4 Guarantee Transmitters which fail within the guarantee period should be returned to BEKA associates or our local agent. -
Page 20: Accessories
9. IDENTIFICATION 9.1 Scale card The BA578C has a window on the right hand side of the display to hold a card showing the units of measurement e.g. F, kg. The transmitter can be supplied with a printed scale card showing any units specified at time of ordering. -
Page 21: Summary Of Programmable Functions
Determines whether the single pole alarm output is open or closed in the 10.1.2 Programming & adjustment alarm condition. When an alarm card is added to a BA578C See section 10.3.4 transmitter the main programme menu is extended as shown in Fig 11. - Page 22 Fig 11 Programme structure for optional alarms...
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Page 23: Alarm Delay
10.3 Description of programmable functions To check or change the alarm output status select 'no.nc' from the alarm sub-menu and press P to The following sections contain detailed descriptions of each programmable function. They should be reveal the current setting. The function may be read in conjunction with the alarm programme changed by pressing the Up or Down buttons... -
Page 24: Access Setpoint
'SP1' or 'SP2' prompt from which the display mode. other setpoint may be selected, or the transmitter Access to the alarm setpoint when the BA578C may be returned to the display mode by pressing E transmitter is in the display mode is obtained by again. -
Page 25: Backlight
12. BACKLIGHT To improve display contrast the BA578C can be supplied with LED backlighting to improve display contrast when the transmitter is installed in a poorly illuminated area. The backlight is segregated from the measuring circuit and may be powered from any 18 to 30V dc supply.
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