Newsletter
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1、The introduction
Seal diaphragm is a pressure sensor component that used to prevent process medium get into the differential pressure transmitter directly ,they are connected with the transmitter that through the filling fluid capillary tube. EJA438W/EJA438N sealed diaphragm type pressure transmitter can be used to measure the rate of flow of liquid, gas or steam, as well as liquid level, density and pressure, and then transform it into 4 ~ 20 ma DC current signal output. EJA series support BRAIN, HART and FOUNDATION fieldbus PROFIBUS PA or communication protocol
2、Product selection data
| EJX438A Diaphragm seal pressure transmitter | |||
| Type | A capsule | B capsule (lap type) | B capsule(The convex flange type) |
| Measurement span | -0.1 ~ 3.5 MPa | -0.1 ~ 16 MPa | -0.1 ~ 16 MPa |
| (-14.5 ~ 500 psi) | (-14.5 ~ 2300 psi) | (-14.5 ~ 1000 psi) | |
| Measurement range | 0.035 ~ 3.5 MPa | 0.16 ~ 16 MPa | 0.16 ~ 7 MPa |
| (5 ~ 500 psi) | (23 ~ 2300 psi) | (23 ~ 1000 psi) | |
| Accuracy | ±0.15% | ±0.15% | ±0.15% |
| Protection level | IP67, NEMA 4X,and JIS C0920 immersion type | ||
| Explosion-proof | FM, CENELEC ATEX, CSA | ||
| Output signal | 4 ~ 20 mA DC 或FOUNDATION™Field bus, two wire system of digital communications | ||
| Power | 10.5 ~ 42 V DC (本安型: 10.5 ~ 30 V DC) | ||
| Environment temperature | -15 ~ 60 ℃(5 ~ 160 °F) (normal) | ||
| -30 ~ 60 ℃(-22 ~ 160 °F) (With built-in display table) | |||
| Process temperature | -30 ~ 180 ℃(-22 ~ 356 °F) (normal) | ||
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The maximum pressure
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Must work in filling liquid temperature range | ||
| Flange nominal pressure | |||
| Installation | Transmitter: 2 "pipe installation | ||
| Diaphragm seal: flange installation | |||
| Process flange size | Flat flange type: 3″ (80 mm), 2″ (50 mm), 1 1/2″ (40 mm) | ||
| The convex flange type: 4″ (100 mm), 3″ (80 mm) | |||
| Wetted material | SUS316L, hartz alloy C - 276, tantalum, titanium | ||
| Amplifier shell | Cast aluminum alloy | ||
