800 / 2088 Explosion-Proof Pressure Transmitters

Description

Pressure measurement in an explosion-proof enclosure

The 2088 family combines a diffused-silicon pressure sensor with a spray-coated metal enclosure, sealed joints and a stainless steel cable gland. EPT-800 is the standard version; EPT-800S adds an LCD protected by tempered glass. A 304 stainless steel process connection accommodates compatible liquids, gases and vacuum-pressure applications.

Applications include petroleum processing, chemical plants, environmental systems, heating equipment, gas monitoring and industrial automation. The enclosure provides IP65 protection, while the signal circuit offers interference resistance and a 0.1s response.

EPT-800 and EPT-800S specifications

ParameterSpecification
SensorDiffused silicon
Accuracy±0.5%FS as standard; ±0.2%FS optional
Operating temperature0–60°C
Overload capacity150% of full scale
Response time0.1s
Explosion-protection designationEx db IIC T6 Gb
Ingress protectionIP65
Current outputTwo-wire 4–20mA as standard
Voltage outputsThree-wire 0–5V, 0–10V or 0.5–4.5V
Digital communicationFour-wire RS485, Modbus-RTU
Supply10–30VDC for current output; 12–30VDC for voltage output
Process threadM20×1.5 as standard; G1/2 or G1/4 optional
Process-connection material304 stainless steel
Local indicationLCD on EPT-800S; no LCD on EPT-800

ELE-800 and ELE-800S configurations

ELE-800 instruments use a high-strength aluminum-alloy junction box, a 304 stainless steel pressure connection and a 316L stainless steel diaphragm. The circuit incorporates automatic temperature compensation, linear calibration and electrical isolation between the power supply and sensing signal. Copper terminals and durable laser markings support installation and identification.

ParameterELE-800 / ELE-800S specification
Reference measuring span0–1MPa; other ranges can be configured
Selectable range bands±200–800Pa; -100–900kPa; 1–100MPa
Pressure referenceGauge as standard; absolute available on request
Accuracy choices±0.5%; ±0.2% available on request
Temperature drift0.03%FS/°C
Long-term drift≤0.2%FS/year
Overload capacity3× rated range
Operating temperature0–50°C
Supply24VDC nominal; 12–30VDC operating range
Outputs4–20mA as standard; 0–5VDC or 0–10VDC; optional RS485 Modbus-RTU
Additional voltage configurations1–5V; ELE-800 also has a 2–10VDC option
Output wiringTwo-wire current; three-wire voltage; four-wire RS485
Process connectionM20×1.5 as standard; G1/4, G3/8, G1/2, NPT3/8, NPT1/4 or NPT1/2 choices; custom sizes available
Electrical entryM20×1.5
Wetted materials304 stainless steel pressure fitting and 316L stainless steel diaphragm
MediaLiquids and gases noncorrosive to the wetted stainless steel, including compatible water, air and oil
ProtectionIP65
Explosion-protection designationsELE-800: Ex d IIC T6 Gb and Ex tD A21 IP66 T80°C configurations; ELE-800S: Ex d IIC T6 Gb
Local indicationELE-800 without LCD; ELE-800S with four-digit LCD as standard and selectable five-digit display

These configurations provide continuous pressure signals for PLC or DCS inputs in industrial processes, water systems, tanks, reservoirs and boiler-related pressure monitoring. Select the housing and protection configuration for the installation.

Selection and installation

Specify the measuring range, gauge or absolute reference, accuracy, output, thread and display requirement. Match the supplied instrument marking to the installation requirements. Use the terminal assignment for the supplied configuration; current, voltage and RS485 versions use different circuits. The English pressure and level transmitter manual includes wiring, dimensional drawings and installation instructions.