084G2101 Danfoss EMP 2 Industrial Pressure Transmitter 5 bar

Product Overview

The 084G2101 (084G2101) is a rugged EMP 2 series pressure transmitter from Danfoss, engineered for demanding industrial and marine applications. Designed to measure a pressure range of -1 to 5 bar (-14.5 to 72.52 psi), this transmitter provides highly accurate feedback for both vacuum and low-pressure systems. It converts mechanical pressure into a standardized 4-20 mA current signal, ensuring reliable data transmission even over long distances. Built to withstand harsh environments, the 084G2101 features a sealed gauge pressure reference, an IP65-rated enclosure, and a high overload pressure limit of 35 bar, making it a critical component for monitoring hydraulic, pneumatic, and steam systems where signal stability and durability are paramount.

Technical Configuration

The 084G2101 utilizes a heavy-duty sensor platform optimized for signal integrity:

• Sealed Gauge Reference: Provides a consistent baseline regardless of local atmospheric pressure changes or altitude, ensuring precision in diverse geographical locations.

• Precision Current Loop: The 4-20 mA output is resistant to electrical noise and voltage drops, featuring low (3.6 mA) and high (22.4 mA) clipping levels for advanced error detection.

• Robust Overload Protection: With a 35 bar maximum overload rating, the internal sensor is protected against pressure spikes up to seven times its maximum rated range.

• Industrial Connection: Equipped with a versatile G 1/4 external and 1/2 inch internal thread per EN 228-1, supported by a Pg 13.5 electrical terminal block for secure field wiring.

Technical Specifications

Technical FAQs

How do the clipping levels (3.6 mA and 22.4 mA) assist in troubleshooting?

These levels allow the controller to distinguish between a valid reading and a system fault. If the signal drops to 3.6 mA, it typically indicates a sensor error or extreme under-pressure. If it rises to 22.4 mA, it suggests a short circuit or over-pressure condition. A signal of 0 mA would immediately indicate a broken wire.

Is this transmitter suitable for marine engine rooms?

Yes. The EMP 2 series is specifically designed for marine and heavy industrial use. The IP65 enclosure and the vibration-resistant terminal block make the 084G2101 ideal for monitoring oil, water, or air pressures in the proximity of large engines and pumps.

Can the 084G2101 be used for vacuum applications?

Absolutely. With a minimum pressure range of -1 bar, this transmitter is fully capable of monitoring vacuum levels, making it useful for suction side monitoring in pumping stations or vacuum-assisted process control.

Engineering & Installation Guide

• Wiring Protocol: The unit uses a 2-wire connection (P = Positive supply, N = Common). To maintain the 0.5% typical accuracy, use shielded twisted-pair cabling. The shield should be grounded only at the PLC or receiver end to prevent ground loops that could introduce signal offsets.

• Terminal Maintenance: When performing field wiring via the Pg 13.5 gland, ensure the cable diameter matches the gland seal. Tighten the terminal block cover securely to maintain the IP65 rating; moisture ingress is the leading cause of signal drift in industrial transmitters.

• Mounting for Longevity: For applications with high vibration, mount the transmitter on a rigid support. If the media temperature exceeds 70 deg C, use a siphon or capillary tube to dissipate heat before it reaches the sensor diaphragm to stay within the compensated temperature range of 0 to 70 deg C.