ATEX digital indicator D122 series
The digital indicator D122 indicates measured values of intrinsically safe current circuits from 4 up to 20 mA in hazardous areas. The device is powered by measure circuit, therefore an extra power supply or batteries are unnescessary. The indicator measures the current, scales the measured value and displays finally the result on the LCD. The internal 24 bit A/D conversion achieves a stable indication even at 4 1/2 digit resolution. For trend analysis, the measured signal is also be displayed on a 41 segment bargraph. It's possible to scale the bargraph separately.
The indicator D122 is available in several housings. Furthermore with alarm monitoring option the indicator has two intrinsically safe alarm outputs. These outputs change their state, when the measured value exceeds its alarm limits. It is possible to configure the outputs as normal open or normal closed circuits. Additional the alarm limits appear graphically on a second bargraph. On one look you're sure that the measured value is in its limits. There's also the possibility to use the display as "counter" which gives the sum of the measured values (type D122.Z)
Ergonomics:
• µ-processor technology for extensive configuration
• scaleable by keyboard and display, without reference current
• separately scaleable bargraph (zoom)
• current control button
• keeps the configuration by turn off
• ability to change configuration during operation
• exchangeable dimension signs
General technical specifications
| Protection | Front panel up to IP55 - with sealed keyboard IP65 | ||||
|---|---|---|---|---|---|
| Housing | According to control panel standard DIN43700 | ||||
| Material housing | - panel housing : glass fibre reinforced noryl - field housing : ABS |
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| Decimal points | selectable by keyboard | ||||
| Limit monitoring | By means of intrinsically safe control circuits (e.g. NAMUR or DIN19234) | ||||
| Alarm limits display | via bargraph, flashing 'max.' or 'min.' display (only types A.0, A.3 en A.5) | ||||
| Measurement circuit limits | see certificate TÜV99ATEX1488 | ||||
| Alarm terminal limits | see certificate TÜV99ATEX1488 | ||||
| Measurement circuit | intrinsically safe measurement circuit 4-20 mA, voltage drop ca. 1V | ||||
| Current control button | direct display of the current in measurement circuit | ||||
| Symbols | selectable with defined symbols | ||||
| Temperatuurscoëfficient | < 0,01 % of measure range / K | ||||
| Ambiant temperature | -10°C - +45°C | ||||
| Guideline | ATEX | ||||
| Manufacturer | Gönnheimer | ||||
| Suited for |
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Classification
- II 2 (1) G Ex ib [ia Ga] IIC T6 Gb
- II 2 (1) D Ex ib [ia Da] IIIC T135°C Db
Zone
| 0 | 1 | 2 |
| 20 | 21 | 22 |
Ordering data (click on the order reference for more details)
| Order refer. | Description | Housing | Digital height | Digital output | Suitable for zone 21 and 22 |
|---|---|---|---|---|---|
| D122.A.0.0 | indicator | panel housing | 15 mm | 0 | |
| D122.A.0.2 | indicator | panel housing | 15 mm | with 2 digital outputs | 0 |
| D122.A.0.3 | indicator | panel housing | 15 mm | with reset input and pulse output | 0 |
| D122.A.3.0 | indicator | panel housing | 30 mm | 0 | |
| D122.A.3.2 | indicator | panel housing | 30 mm | with 2 digital outputs | 0 |
| D122.A.3.3 | indicator | panel housing | 30 mm | with reset input and pulse output | 0 |
| D122.A.5.0 | indicator | field housing | 30 mm | 0 | |
| D122.A.5.2 | indicator | field housing | 30 mm | with 2 digital outputs | 0 |
| D122.A.5.3 | indicator | field housing | 30 mm | with reset input and pulse output | 0 |
| D122.A.6.0 | indicator | field housing | 50 mm | 1 | |
| D122.A.6.2 | indicator | field housing | 50 mm | with 2 digital outputs | 1 |
| D122.A.6.3 | indicator | field housing | 50 mm | with reset input and pulse output | 1 |
| D122.Z.0.0 | totalizer | panel housing | 15 mm | 0 | |
| D122.Z.0.2 | totalizer | panel housing | 15 mm | with 2 digital outputs | 0 |
| D122.Z.0.3 | totalizer | panel housing | 15 mm | with reset input and pulse output | 0 |
| D122.Z.3.0 | totalizer | panel housing | 30 mm | 0 | |
| D122.Z.3.2 | totalizer | panel housing | 30 mm | with 2 digital outputs | 0 |
| D122.Z.3.3 | totalizer | panel housing | 30 mm | with reset input and pulse output | 0 |
| D122.Z.5.0 | totalizer | field housing | 30 mm | 0 | |
| D122.Z.5.2 | totalizer | field housing | 30 mm | with 2 digital outputs | 0 |
| D122.Z.5.3 | totalizer | field housing | 30 mm | with reset input and pulse output | 0 |