Ametek Drexelbrook Impulse GW Series, Installation And Operating Instructions Manual

Page: 9 / 99

Introduction
3
1.3 System Specifications
Input:
Power:
13-30 VDC, I.S. HART Version
14-30 VDC, X.P. HART Version
11-30 VDC, X.P. Modbus Version
Function:
Time Domain Reflectometry (TDR)
Measured Values:
Total Level and Volume
Min., Max. Measuring ranges:
Single Rod 1 - 12 ft. (0.3 - 3.6 m)
Single Cable 1 - 50 ft. (0.3 - 15 m)
Coaxial 1 - 20 ft. (0.3 - 6 m)
Twin Rod 1 - 12 ft. (0.3 - 3.6 m)
Twin Cable 1 - 50 ft. (0.3 - 15 m)
Non Measurement Ranges:
Dead Zones Upper / Lower
K=2 - K=80
Single Rod 2” / 5" - 3" / 5” (50 / 125 - 75 / 125 mm)
Single Cable 2” / 5" - 3" / 5” (50 / 125 - 75 / 125 mm)
Coaxial 2” / 7" - 2" / 7” (50 / 175 - 50 / 175 mm)
Twin Rod 2” / 3" - 3" / 3” (50 / 75 - 75 / 75 mm)
Twin Cable 2” / 6" - 3" / 5” (50 / 150 - 75 / 125 mm)
Minimum Dielectric (K)
Twin Rods, Twin Cables
Coaxial
Single Rod, Single Cable K > 1.9
K > 1.4
K . 1.9 *
Output:
Output Signal:
Output 1 Two-wire, 4 – 20 mA, HART, AMS (isolated)
Signal on Fault
Current output selectable 3.7 mA or 22 mA
Maximum Load
Resistive Vs -13 (I.S. version) or -14 (X.P. Version)
10.022 = Max. Loop Resistance
User Selectable
Modbus or Digital Output
Performance Characteristics:
Measuring Accuracy
Reference conditions 20°C +/- 5°C / 68°F +/- 9°F @ Atmospheric
pressure / 60% Relative Humidity
Liquids K > 10 / K < 10 +/- 3 mm / +/- 0.08” / +/- 5mm / +/- 0.16"
Resolution
+/- 1 mm / +/- 0.04”
Response Time:
Less than 1 second
Damping:
0 – 90 seconds
Operating Conditions:
Installation:
Start-up Time
40 seconds
Emission Angle
0°
Environment:
Ambient Temperature
-30° to +70° C / -22° to +158°F
Storage Temperature
-40° to +85° C / -40° to +185°F
* For media with dielectrics of 1.9 to 10, single sensing element sensors must be mounted within 3"-6" (75-150mm) from a ground
reference such as a tank wall.