The Ranger® DASRO gauge is a Quartz Digital Addressable Surface Read Out Pressure/Temperature Probe based on a resonating quartz sensor with digital signal transmission and addressing ability for multiple gauge deployment on a single line. Additionally, the DASRO has a cablehead on each end to allow in-line installation without need for a “Y” block. The internal gauge electronics consists of two custom microelectronic circuits that are hermetically sealed. Each gauge has a pre-assigned digital address for multiple unit operation on the same signal conductor. Fault protection current limiting is included for both the gauge electronics and the primary line.
Ranger DASRO gauge specifications are determined in accordance with the ANSI/ISA-S51.1-1979, American National Standard, “Process Instrumentation Terminology”
Pressure Sensor:
Thickness shear mode quartz resonator (with INCONEL® isolation bellows)
Total System Pressure Accuracy:
±0.02% of full scale including linearity, hysteresis and repeatability over calibrated temperature range
Pressure Repeatability:
≤0.01% of full scale
Pressure Resolution:
0.01 psi or better
Temperature Sensor:
Quartz resonator
Temperature Accuracy:
±0.5°C (±0.9°F) within calibrated temperature range. Pressure accuracy is independent of indicated temperature accuracy.
Temperature Resolution:
0.005°C (0.01°F)
Standard Calibrated Temperature Ranges
25°C to 125°C (77°F to 257°F)
25°C to 150°C (77°F to 302°F)
25°C to 175°C (77°F to 347°F)
25°C to 200°C (77°F to 392°F)
Operating Temperature Range
-40°C to 200°C (-40°F to 392°F)
Sample Rate:
Complete pressure and temperature transmission in approximately one-second intervals
Operating and Calibrated Pressure Ranges
0 - 344.75 Bars (0 - 5,000 psia)
0 - 689.50 Bars (0 - 10,000 psia)
0 - 1103.20 Bars (0 - 16,000 psia)
0 - 1378.95 Bars (0 - 20,000 psia) - Optional
Dimensions (OD x L):
32.5mm x 81.3cm (1.281” x 46.5”)
Weight:
4.76 kg (10.5 lbs.)
Pressure Housing Wetted Material :
Nitronic 50HS®
Sensor Wetted Materials:
INCONEL® 600/625/718
Requirements of Conductor Cable:
Single conductor coaxial cable with low conductor resistance. The maximum DC loop resistance is determined by the number of gauges on one line and the surface power supply. Can be up to 500 ohms with a capacitance of up to 1 ufd for a single unit installation and using a 30 volt surface power supply.
Dual Cable Head SIDE pressure inlet | (Model No: 68xxB DASRO) – Same length |
Single Cable Head SIDE pressure inlet | (Model No: 68x1B DASRO) – Same length |
Single Cable Head BOTTOM pressure inlet | (Model No: 62xxB DASRO) – Shorter |
“x” or “xx” = Denotes calibrated temperature range. Example: A 175C calibrated gauge 68xxB = 6875B, 68x1B = 6871B or 62xxB = 6275B