Pressure Switch for Gas DG
The DG pressure switch, manufactured by Elster Kromschroder GMbH for the American market, is made with the highest quality and finest German engineering. Diaphragm pressure switches with micro switch for monitoring gas pressures on industrial installations, for gas and air, also suitable for biologically produced methane, with hand wheel for adjusting the switch-on point, with 110 V green control lamp, silicone-free, FM and UL approved.
Features
- For monitoring positive air and gas pressures, negative or differential air pressures
- Five pressure ranges from 0.2" to 200" WC (0.5 mbar to 500 mbar)
- Accurate, repeatable switching action with low hysterisis
- Choice of mounting positions
- One normally open and one normally closed contact in each switch
- Automatic and manual reset models available
- Compact construction, easy installation
- Special models available for oxygen service and low voltage operation
- FM and UL approved
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Documentation
Manufacturer's Product Brochure
Manufacturer's Installation Instructions
Manufacturer's Technical Sheet |
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Ordering Information
| Model |
Adjusting Range |
Locks off with
Rising Pressure |
Locks off with
Falling Pressure |
Price
(US List) |
Order Now |
| DG 6T |
0.2 - 2.4 "WC (0.5 - 6 mbar) |
No |
No |
$68 |
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| DG 10T |
0.4 - 4 "WC (1 - 10 mbar) |
No |
No |
$68 |
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| DG 50T |
1 - 20 "WC (2.5 - 50 mbar) |
No |
No |
$68 |
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| DG 150T |
12 - 60 "WC (30 - 150 mbar) |
No |
No |
$68 |
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| DG 500T |
40 - 200 "WC (100 - 500 mbar) |
No |
No |
$68 |
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| DG 10HT |
0.4 - 4 "WC (1 - 10 mbar) |
Yes |
No |
$83 |
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| DG 50HT |
1 - 20 "WC (2.5 - 50 mbar) |
Yes |
No |
$83 |
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| DG 150HT |
12 - 60 "WC (30 - 150 mbar) |
Yes |
No |
$83 |
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| DG 500HT |
40 - 200 "WC (100 - 500 mbar) |
Yes |
No |
$83 |
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| DG 10NT |
0.4 - 4 "WC (1 - 10 mbar) |
No |
Yes |
$83 |
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| DG 50NT |
1 - 20 "WC (2.5 - 50 mbar) |
No |
Yes |
$83 |
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| DG 150NT |
12 - 60 "WC (30 - 150 mbar) |
No |
Yes |
$83 |
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| DG 500NT |
40 - 200 "WC (100 - 500 mbar) |
No |
Yes |
$83 |
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| DG 6TG |
0.2 - 2.4 "WC (0.5 - 6 mbar) |
No |
No |
$76 |
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| DG 10TG |
0.4 - 4 "WC (1 - 10 mbar) |
No |
No |
$76 |
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| DG 50TG |
1 - 20 "WC (2.5 - 50 mbar) |
No |
No |
$76 |
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| DG 150TG |
12 - 60 "WC (30 - 150 mbar) |
No |
No |
$76 |
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| DG 500TG |
40 - 200 "WC (100 - 500 mbar) |
No |
No |
$76 |
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| For all other configurations Contact Combustion 911 |
Accessories
| Model |
Description |
Price
(US List) |
Order Now |
| DG/DL ACC 01 |
Z-angle bracket DL 3-150A, 3K, 1-3E |
$6 |
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| DG/DL ACC 02 |
Z-angle bracket DL 5-50E, 5-150K |
$6 |
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| DG/DL ACC 03 |
Pilot lamp set 110/120 V AC red |
$9 |
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| DG/DL ACC 04 |
Pilot lamp set 110/120 V AC green |
$9 |
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| DG/DL ACC 05 |
LED set 24 V DC/AC red/green |
$9 |
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| DG/DL ACC 06 |
Connecting set DG..U, DG..T |
$5 |
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| DG/DL ACC 07 |
Tube set with angle connector and extension for DL |
$19 |
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| DG/DL ACC 08 |
U-angle bracket DG, DL |
$6 |
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Applications
DG..T gas pressure switches provide accurate, reliable monitoring of gas and air pressures for industrial and commercial applications. They are suitable for natural gas, LP, biogases and air. UL listed and FM approved, they can be used as high and low gas and low air proving switches in combustion supervisory systems.
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For the control of the minimum gas inlet pressure. |
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Negative pressure cut-out for gas (and air) and for low voltages with close position indicator. |
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Electrical safety shut-off valve (SAV) with closed position indication of devices connected downstream. |
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Differential pressure switch for monitoring of air filters. |
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Specifications
| Electrical |
| Supply voltage: |
30 - 240 Vac; 50/60 Hz
(Special "G" models available for
voltages below 30 Vac) |
| Switch contact rating: |
5 A resistive
or 0.5 A inductive (cos φ = 0.6)
For "G" models, 0.1 A resistive or
0.05 A inductive (cos φ = 0.6) |
| Short-circuit protection: |
use 8 A
quick-acting fuse |
| Screw terminals: |
Maximum
wire gauge of 14 - 18 AWG wire |
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| Pressure Switches |
½" NPT conduit connection.
¼" NPT female connections (2) for pressure (high differential) side of switch.
⅛" NPT female connection for suction (low differential) side of switch.
11/32" (9 mm) diameter test hose fitting on pressure (high differential) side of switch. |
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| Adjusting Range |
| DG 6T: |
0.2 - 2.4 "WC (0.6 - 6 mbar) |
| DG 10T: |
0.4 - 4 "WC (1 - 10 mbar) |
| DG 50T: |
1 - 20 "WC (2.5 - 50 mbar) |
| DG 150T: |
12 - 60 "WC (30 - 150 mbar) |
| DG 500T: |
40 - 200 "WC (100 - 500 mbar) |
| DG 10HT and DG 10NT: |
0.4 - 4 "WC (1 - 10 mbar) |
| DG 50HT and DG 50NT: |
1 - 20 "WC (2.5 - 50 mbar) |
| DG 150HT and DG 150NT: |
12 - 60 "WC (30 - 150 mbar) |
| DG 500HT and DG 500NT: |
40 - 200 "WC (100 - 500 mbar) |
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| Hysteresis, max |
| DG 6T: |
0.12 "WC (0.3 mbar) |
| DG 10T: |
0.16 "WC (0.4 mbar) |
| DG 50T: |
0.60 "WC (1.5 mbar) |
| DG 150T: |
1.60 "WC (4.0 mbar) |
| DG 500T: |
4.00 "WC (10.0 mbar) |
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| Differential between switching
pressure and reset |
| DG 10HT and DG 10NT: |
0.2 - 0.4 "WC (0.4 - 1 mbar) |
| DG 50HT and DG 50NT: |
0.2 - 0.8 "WC (0.4 - 2 mbar) |
| DG 150HT and DG 150NT: |
0.2 - 1.6 "WC (0.4 - 4 mbar) |
| DG 500HT and DG 500NT: |
1.6 - 4.0 "WC (4.0 - 10 mbar) |
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| Operating limits |
Ambient and gas temperature
range: |
-40° F to 140° F
(-40° C to 60° C) |
| Maximum storage temperature: |
158° F (70° C) |
| Maximum surge pressure: |
30 psig
(2 bar) for a duration < 15 minutes |
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| Dimensions and Weights |
| Weight: |
DG 6 to DG 50 models: 0.6 lbs (0.3kg)
DG 150 and DG 500 models: 0.7 lbs (0.33kg) |
| Dimensions: |
3 inches × 3 inches × 2.76 inches |
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| Construction Materials |
| FMDG pressure switch covers: |
High quality injection-molded plastic. |
| Switch housings: |
Glass fiber-reinforced
plastic and pressure die-cast
aluminum alloy. |
| Diaphragms: |
Nitrile rubber |
| Enclosure: |
NEMA 3 (IP 54) |
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