DIGITAL INDICATORS
Instruction manual
This instruction applies for:
-Loop powered indicator 531 for field mounting
-Loop powered indicator 532 for panel mounting
-230 V AC powered indicator 533 for panel mounting
General specifications
Indicator type: |
531 |
532 |
533 |
Mounting: |
Field |
Panel |
Panel |
|
|
|
|
Enclosure: |
IP65 |
IP22 |
IP22 |
|
|
|
|
Temperature range: |
|
-20 °C … + 50 °C |
|
|
|
|
|
Resolution: |
|
± 1 count |
|
|
|
|
|
Adjustments: |
|
|
|
- 0 point, readout |
- 1000 … 0 … + 1000 |
||
- Span readout/mA |
12…125 |
20 … 200 |
12…125 |
|
|
|
|
Linearity: |
|
|
± 1% |
|
|
|
|
Measuring units
Digital indicators are applied for readout of level, flow, pressure, ph etc. The far most used measuring values are pre-printed as symbols on the enclosed green sheet. The indicators are supplied with a transparent panel where symbols from the preprinted sheet can be put in. Use white transfer letters or a white pen if your symbol is not enclosed.
On type 531, the label can easily be put in by loosening the display insertion from the lid. On type 532 and 533 the front frame can be dismantled. Push carefully on the terminal plugs on the back of the instrument to push out the front glass.
MJK Automation A/S
Byageren 7
M531-2-3GB0504 1 DK-2850 Nærum Denmark mjk@mjk.com www.mjk.com
DIGITAL INDICATORS
Adjustment
The indicators have a built-in signal generator for adjustment and readout of limit values eliminating the need for external instruments. When adjusting, the indicator must be connected to an active measuring signal. The measuring signal has no influence on the adjustment.
When adjusting decimal separator, 0-point and span, only the switches for decimal separator and one of the switches for adjustment of 0-point or span can be in the ON position.
Setting of decimal separator position
3 switches for setting of the decimal separator position is found on the back of the indicator. The following four settings can be selected:
|
|
|
|
|
|
|
|
|
|
8.8 8 8 |
8 8.8 8 |
8 8 8.8 |
8 8 8 8 |
||||||
Adjustment of 0-point
The optional values for 0-point is shown in section "Specifications".
Set the switch "MEASURE" in "OFF" position and the "4 mA READING" in "ON" position. Set the 0-point with the potentiometer to "4 mA READING". Set the switch "MEASURE" back in "OFF" position, and the instrument is now ready for use.
Adjustment of span
The optional values for span is shown in section "Specifications".
Set the switch "MEASURE" in "OFF" position and the "20 mA READING" in "ON" position. Set the 0-point with the potentiometer to "20 mA READING". Set the switch "MEASURE" back in "OFF" position, and the instrument is now ready for use.
MJK Automation A/S
Byageren 7
M531-2-3GB0504 2 DK-2850 Nærum
Denmark
Tel.: +45 45 56 06 56
Fax: +45 45 56 06 46
DIGITAL INDICATORS
Field indicator type 531, 4-20mA loop powered
General
Field indicator 531 is supplied either in IP65 enclosure or as a display insertion for mounting in a connection box for a pressure, pH or temperature transmitter. The indicator is loop powered from the 4-20mA signal with a maximum voltage drop of 3,5 V.
Specifications
Item number, complete instrument: 200125
Item number, display insertion: |
200126 |
Mounting and enclosure: |
Field, IP65 |
|
|
Supply: |
4-20 mA |
|
|
Voltage drop: |
Max: 3,5 V |
|
|
Dimensions: |
80 X 120 X 56 mm (HxWxD) |
|
|
Switch settings
|
|
4 mA setting |
20 mA setting |
Measurement |
|||||||||
|
|
|
off on |
|
off on |
|
off on |
||||||
Decimal point{ |
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3 |
|
|
|
|
|
|
|
|
|
|
|
|
|
Measurement |
4 |
|
ν |
|
|
|
ν |
|
|
|
|
ν |
|
|
|
|
|
|
|
|
|
|
|
||||
|
|
ν |
|
ν |
|
|
|
ν |
|
|
|||
4mA display |
5 |
|
|
|
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
||||
20mA display |
6 |
|
ν |
|
|
|
|
ν |
|
|
ν |
|
|
|
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|||
Connection
Electrical connection is made as shown on the following diagrams. The display insert is connected to the two terminals on the PCB in the junction box. (Red to + and black to -). A Zener diode ensures the current loop if the display insert is disconnected.
Note: A separate 531 display insert can be mounted on an existing junction box. According to the version, the PCB can be mounted with one or two solder bridges.
MJK Automation A/S
Byageren 7
M531-2-3GB0504 3 DK-2850 Nærum Denmark mjk@mjk.com www.mjk.com
DIGITAL INDICATORS
Field indicator type 531 for active 4-20 mA signal
The active 4-20 mA signal is connected to the leftmost terminals as shown below:
Active |
531 Display insert |
4-20 mA signal
Note: A jumper must be mounted in terminal 1 and two in the middle terminal block !
Field indicator type 531 in series (as junction box)
Mount the cables as shown below:
Note: No jumpers must be present.
Active |
531 Display insert |
4-20 mA signal
Pressure transmitter
MJK Automation A/S
Byageren 7
M531-2-3GB0504 4 DK-2850 Nærum
Denmark
Tel.: +45 45 56 06 56
Fax: +45 45 56 06 46
Loading...