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Dwyer-Guided Radar-TDR

( Dwyer )

General

Designed to Perform Better than any Other TDR

Most Stable Measurement

Despite disturbances such as strongly agitated surfaces, foam and coating of the probe or fi ne dust

in the tank, DR7100 will continue to measure where other devices fail.

Measures any Product ...

Most 2-wire TDR devices measure down to a dielectric of 1.5. As a result, many organic compounds are not measured properly. The DR7100 measures down to 1.4 (and even 1.1 using superior tank-bottom following mode).

... in any Application

5 different probes means there’s not an application that we can’t handle.

Makes Level Gauging Easier than Ever

Wizard Works Wonders

Setting up a 2-wire level gauge couldn’t be easier: Simply fi t the gauge to the tank, wire it up and

switch it on:

• Step 1 – The DR7100 tests itself to make sure its electronics are working perfectly.

• Step 2 – The DR7100s Wizard walks you through a simple series of questions to defi ne your tank and

                the product you want to measure.

• Step 3 – That’s all you need. Your DR7100 is already measuring.

Interactive Help

Not certain what to do? You don’t need a handbook. Simply wait 10 seconds, the help screen will appear

and tell you what to do.

The new DR7100 with its more advanced design solutions has higher signal dynamics. Sharper

Pulses measure thinner interfaces. The superior Time Base Stability allows better reproducibility,

which translates to better reliability.

Easy Navigation & Viewing

            Choice of different Touch Screens: (tank illustration, bar-graph, oscilloscope...)

2-Wire

            Class I Div1, Zone 0 Installation

Special Process Separator for Extreme Conditions

• Probe Types and Materials for all applications

 

Features:

Input

 

Function

Time Domain Reflectometry (TDR)

Parameter

Level, distance, volume and / or interface

Max. measuring range

Double rod 8mm / 0.3” 4m / 13ft

Single rod 8mm / 0.3” 4m / 13ft

Coaxial 22mm / 0.9” 6m / 20ft

Double cable 4mm / 0.15” 35m / 115ft

Single cable 4mm / 0.15” 35m / 115ft

Single cable 8mm / 0.3” 35m / 115ft

Output Signal

Output signal 1

4 - 20mA HART® or 3.8 - 20.5 mA acc. to NAMUR NE 43

Output signal 2

4 - 20mA or 3.8 - 20.5 mA (Optional) acc. to NAMUR NE 43

Accuracy

0.05% (rel. 20 mA; 20°C / 68°F)

Resolution

±2 μA

Temperature Drift

Typically 50 ppm/K

Error Signal

High: 22 mA; Low: 3.6 mA acc. to NAMUR NE 43

Max. Load

350 ohm

Measuring Accuracy

Reference conditions acc. to IEC770

Temperature

+20°C ±5°C / +68°F ±9°F

Pressure

1013 mbar abs. ±20 mbar 14.69 psig ±0.29 psig

Relative Humidity

60% ±15%

Resolution

1 mm / 0.04 “

Accuracy

In Direct Mode

Liquids

±3 mm / ±0.12” when L < 10 m / 33 ft; ±0.03% of measured distance,

when L > 10 m / 33 ft

Powders

±20 mm / ±0.8”

Interface

±10 mm (εr Constant)

Mechanical Data

Housing

Aluminium

Wetted Parts

Rod

Stainless steel (1.4404 / 316L); Hastelloy C-22 (2.4602)

Coaxial

Stainless steel (1.4404 / 316L); Hastelloy C-22 (2.4602)

Cable (4mm /0.15")

Stainless steel (1.4401 / 316); Hastelloy C-22 (2.4602)

Process Fitting

Stainless steel (1.4404 / 316L);

Hastelloy C-22 (2.4602)

Gaskets

Viton (-40…+150°C / -40…+300°F);

Kalrez 6375 (-20…+150°C / -5 …+300°F)