DRSA 1250

Digital Refrigeration System Analyzer.

We still support, but are no longer manufacturing the successful DRSA1250 analyzer. It has been replaced by the New AK-900.

You can still purchase replacement Spring and Bar clamps as well as velcro temperature sensors for your DRSA1250.

And you can still  Download DRSA-1250 User Manual.

Accessories:
Here are the accessories still available to equip your DRSA 1250

Spring Clamp TS-1140 You can choose these Dual Spring Clamp Temperature Sensors to equip your DRSA 1250.
Bar Clamp TB-1140 You can choose these Dual Bar Clamp Temperature Sensors to equip your DRSA 1250.
Velcro TV-1140 These Dual Velcro Temperature Sensors come with your DRSA 1250. You can get replacements at the online store.

Benefits & Advantages

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The entire service organization stands to benefit from using the Digi-Cool DRSA:

  • Quicker, more accurate diagnostics: easily spot hidden problem using sub-psi pressure dynamics
  • Simplify cumbersome procedures: convenience, better visibility and less frustration improves productivity and employee morale. Staff see appropriate tools and training as tokens of faith and respect from management.
  • Fewer unnecessary or inappropriate repairs: reduce costs on current maintenance contracts, allow you to bid more aggressively for new contracts.
  • Rapid payback: Allows you to save 10 – 15 minutes or more at many jobs. Soon the analyzer is paid for and making money for you!

How It Works A set of manifold pressure gauges, it replaces the traditional analog gauges on your favorite service manifold. It shows:

  • Pressure readings for the low and high sides
  • Pressure fluctuations down to 1/4 psi
  • Bubble and dew (or saturation) temperatures for up to 25 selectable refrigerants.

The patented bar graph display shows the smallest modulations about the digital reading. This allows unprecedented diagnostic power, as dynamics of valve modulation and refrigerant flow are easily visible to the technician.

  • Bar graph: segments show changes from digital reading
    • Range: 2 psi low-side, 8psi high-side
    • In example above, low-side has dropped 2psi to 63.9 psig since update, high-side has dropped 3psi to 170 psig since update
  • Resolution: 0.1 psi low-side, 1 psi high-side
  • Temperatures: corresponding bubble and dew points for current pressures
  • Refrigerant: Current selection on bottom left
    • Selectable ASHRAE / trade number mode (eg. “R-410B” vs “66? for MP66)
  • R- selects active refrigerant
  • ZERO automatically calibrates to current atmospheric pressure
  • ENG / SI changes between English (PSI, “Hg, °F) and SI (kPa, °C) units
  • GA / ABS changes between PSIA and PSIG for English units
  • 1SEC / 5SEC / HOLD changes the rate digits are updated
  • LCD / changes contrast to fit lighting conditions

How it Works

Video Clip: Operation Instructions

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Animated Demonstrations

Standard Pulldown

 

Standard Pulldown


This simulation shows a standard pulldown in an R-22 system. The digital reading is set to update once per second, so you can track the pressure when it changes rapidly. Notice how the bar graph clears to zero when the digits change. You can see that the overall trend is downwards in this pulldown sequence.

The pressure bar graph is patented by Digi-Cool Industries Ltd. and is unique to our products. It shows all the pressure fluctuations never seen before, for quick and accurate diagnostics. More

Hunting TEV

 

Hunting TEV


This demo shows a R410A system operating with a poorly performing TEV. The digital reading is set to update every 5 seconds, and each bar graph shows the change from that reading. If there is a decrease, segments accumulate on the left; increases grow to the right. Each segment on the low side represents 1/4 psi of change on the low side, and 1psi on the high side. Notice how the bar graph clears to zero when the digit changes.

The system is fluctuating about 2 psi on the low side. The expansion valve is hunting and tracking poorly. With conventional dial gauges, this behaviour would only show as a small movement of the needle, difficult to see unless the needle is closely watched. The large display of the analyzer allows you to quickly spot and diagnose the problem.

The pressure bar graph is patented by Digi-Cool Industries Ltd. and is unique to our products. It shows all the pressure fluctuations never seen before, for quick and accurate diagnostics. More

Refrigerant Floodback

 

Refrigerant Floodback


This demo shows refrigerant floodback. As the liquid floods through the suction line into the compressor, the bar graph fluctuates sharply as the liquid flashes off in the compressor. While large amounts of liquid floodback can be seen with regular gauges, they do not show smaller amounts that also damage compressors; the DRSA shows you the smallest pulses.

The pressure bar graph is patented by Digi-Cool Industries Ltd. and is unique to our products. It shows all the pressure fluctuations never seen before, for quick and accurate diagnostics. More

Pump Down
Pump Down


This demo shows standard system pump down, as the user gets ready to open the system for service. Note that even with the rapid decline of pressure, we can follow the pressure down and shut it down just before reaching 0 psi. ‘62 is the trade name shown for HP62 (R-404A). The user can select whether refrigerants are shown by their trade names or ASHRAE designations.

The pressure bar graph is patented by Digi-Cool Industries Ltd. and is unique to our products. It shows all the pressure fluctuations never seen before, for quick and accurate diagnostics. More

High Side Liquid Locked
High Side Liquid Locked


This demo shows a hydraulically locked high side. Note the rapid increase in pressure. There is no more room for vapor condensation in the condenser.

The pressure bar graph is patented by Digi-Cool Industries Ltd. and is unique to our products. It shows all the pressure fluctuations never seen before, for quick and accurate diagnostics.


Models & Features

  • Sleek, compact design
  • “Dynamic Offset” bar graph clearly shows modulation of control valves
  • Adjustable digital readout update rate: 1 second, 5 second or hold digits.
  • One-touch atmospheric pressure calibration.
  • Vacuum readings in “Hg
  • Easy to read LCD screen with large 3/8″ digits.
  • Temperature probe for automatic superheat and subcooling readings
  • Max / min pressure monitoring for control set-up
  • Automatic power off after 15 minutes preserves battery life; low battery indicator.
  • Upgradeable for new and additional refrigerants
  • Water resistant and wide temperature range for indoor & outdoor use
  • Tough construction with flexible protective boot
  • Durable construction and tough case tolerates drops and impacts
  • Includes profiles for 25 common refrigerants within:

 

Ashrae Number Trade Name
R-12 12
R-22 22
R-134A 134a
R-290 290
R-401A 39
R-401B 66
R-402A 80
R-402B 81
R-404A 62
R-406A 406a
R-407C 9000
R-408A 10
R-409A 56
R-410A 20
R-414B 414b
R-416A 416a
R-417A 59
R-420A 420A
R-421A 421A
R-421B 421B
R-422A 79
R-422B 22b
R-422D 29
R-424A 44
R-434A 45
R-500 500
R-502 502
R-507 AZ50
R-508B 95
R-600A Isobutane

 


 

Download DRSA-1250 User Manual

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