| **** THIS PRODUCT IS NO LONGER OFFERED - CHECK WITH US FOR A REPLACEMENT **** |
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Dwyer Series 621 Pressure
Indicating Transmitter |
| 1/8
DIN Housing 4-20 mA Housing Output |
Series 621 Pressure Indicating is a 1/8 DIN measuring and
controlling instrument designed for positive, negative or
differential pressures of air and compatible gases. Pressure
readings are displayed on a large 3 ½ digit LCD display
which unit simultaneously produces a standard 4-20 mA output
signal. Over a dozen stocked ranges are available from 0-3
in. w.c. to 0-100 psid or choose metric units in rances fro
0.075 kPa to 0-690 kPa. Versatile circuit design enables use
in 2, 3 or 4-wire current loops.
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| PHYSICAL
DATA |
- Pressure Connections: Barbed for 1/8" (3mm) I.D.
tubing
- Media Compatibility: Air and non-corrosive gases
- Electrical Connections: Terminal block
- Housing: Gray, PVC type I
- Weight: 8.5 oz (241 g)
- Adjustments: Accessible potentiometers
ELECTRICAL
- Power Supply: 10 - 35 VDC (2, 3 or 4-wire); 16 - 26 VAC
(4-wire)
- Output Signal: 4-20 mA DC, limited at 38 mA DC
- Loop Resistance: 0-1300 DC max, 0-1200 AC max
- Current Consumption: DC, 38 mA max.; AC, 76 mA max
- Warm-Up Time: 10 minutes
PERFORMANCE AT 70°F (21°C)
- Zero Output: 4 ma DC
- Full Span Output: 16 mA DC
- Accuracy: ±0.5% of F.S.O. (Includes linearity,
hysteresis and repeatability)
- Span & Zero: Adjustable to 0.5% of full span
- Warm-up Time: 10 minutes
ENVIRONMENTAL
- Operating Temperature: 20 to 120°F (-6.7 to 49°C)
- Thermal Errors: ±0.02% per °F typical
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| MODELS
NUMBERS (stock shown in bold) |
| Model Number |
Range in. w.c. |
Max. Pressure |
| 621-3 |
0-3 in. w.c. |
5 psig |
| 621-6 |
0-6 in. w.c. |
5 psig |
| 621-10 |
0-10 in. w.c. |
5 psig |
| 621-20 |
0-20 in. w.c. |
11 psig |
| 621-40 |
0-40 in. w.c. |
11 psig |
| 621-100 |
0-100 in.
w.c. |
29 psig |
| 621-200 |
0-200 in.
w.c. |
29 psig |
| 621-1000 |
0-1000 in.
w.c. |
150 psig |
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