Dräger REGARD 3920
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Dräger REGARD 3920
Based upon the Dräger REGARD 3900 the 3920 is configured via on board pushbuttons and is capable of housing both 4-20 mA input boards and relay output boards in a robust IP65 enclosure. The Dräger REGARD 3920 is a modular system suitable for the most stringent of budgets.
Analog input board
Each analog input board caters for one to four, 2 or 3 wire, 4-20 mA transmitters. Each transmitter connects to dedicated field terminals. Up to a total of four analogue input boards can be installed in to a single Dräger REGARD 3920, thus giving a maximum input count of sixteen transmitters. Each individual input board is populated with three relays. These relays offer common Fault, Alarm 1 and Alarm 2 outputs. The two alarm levels are fully configurable and can be set as rising or falling, latching or non-latching. To differentiate between each input board a simple mechanical link is required.
Relay output board
Each relay output board is populated with eight additional SPCO relays. Relay 1 on each relay board is a dedicated Fault relay and cannot be reconfigured. The remaining seven relays can be configured as Single, Common, Voting, Inhibit or Nonoperational. An additional Alarm 3 level is offered by the relay board along with a second Fault threshold. All configurable relays can be Rising/Falling, Latching/Non Latching and Normally Energised/Energised on alarm. Alarm relays are acknowledged via the push button located on the front panel of the instrument housing. A maximum of two relay boards can be installed in a single Dräger REGARD 3920 control system.
Repeat output board
Each 4-20 mA output board repeats the signal of up to eight inputs. This allows indication or recording of gas levels by other units. A maximum of two analog output boards can be installed in a single Dräger REGARD 3920 control system.
System configuration
The Dräger REGARD 3920 is fully configurable via pushbuttons located on the front panel. The configuration menu allows quick and easy set-up. All calibration routines, zero and span are performed using the configuration menu.
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Regard 3920 Product Information, en-us
The Dräger REGARD® 3920 is a standalone, self contained control system for the detection of Toxic, Oxygen and Ex hazards. The control system is fully configurable between 1 and 16 channels, depending upon the type and quantity of input/output boards installed.
Handbook: An Introduction to Gas-Detection Technology (1st Edition)
Flammable and toxic gases and vapours occur in many areas. It is important to recognise the danger they pose – and that is the purpose of gas-detection and warning devices.
Technical Data
Key Facts
- Type
- wall-mounted or rail-mounted
- Channels
- 16
- mA
- ✓
- mV
- ✓ (optional)
- Digital communication
- ✓ (outputsignal)
- SIL
- ✓ SIL 1/2
- Surface Mount
- ✓
- DIN Rail Mount
- ✗
- Dockingstation
- ✗
Technical Data
- Power Supply
- 230 V AC / 24 V DC
- Temperature (operation)
- 32°F - 131°F
- Humidity
- 0 to 100 % r.h., non-condensing
- Pressure (hPa)
- 700 - 1300
- Dimensions (H × W × D)
- 16.34x12.01x6.89 "
- Weight
- 11.02 lb
- Housing Material
- ABS OV
- Degree of protection (IP class)
- IP65
Approvals
- ATEX
- ✓
- IECEx
- ✗
- UL
- ✗
- CSA
- ✗
- CE marking
- ✓
- GOST (EAC)
- ✗
- Performance approval
- ✓
- Shipping approval
- ✓
- FM
- ✗
