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Unit #2 Model10-400-3G20-1-CP2-R2-LT-AR
-400~400W @ 20C with ambient air cooling for the Cube
3G20>3 lpm @30 pig magnetic drive gear pump. Adjustable flow setting for 2 lpm.
CP23/8" CPC shut off valve (1-3 lpm)
R2RS232 interface controller
LTLow temperature operation (<5C) 
ARAuto reset - software

* product details: https://www.sscooling.com/product/thermocube-liquid-to-liquid/ 

*manual: https://www.sscooling.com/wp-content/uploads/2021/07/ThermoCube-Liq-Liq-Manual-Rev-M13.pdf


Coolant connector (3/8" CPC) on unit #2Connection to the filter for unit #1Unit #1 with Swagelock QC4-316 joint for application insertionUnit #1 view from above its filter

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The vacuum chuck has 3mm diameter hole for the vacuum line tube (OD/ID=3mm/1.8mm). The vacuum pump at B84 EPP lab is a GAST DOA-P704-AA with max pressure of 4 bar (60 psi). The left port (looking from front) has a 3/8" barb that we intend to connect a braided firm polyurethane rubber tube (McMaster-Carr #51165K12) with ID:OD=3/8":5/8" which runs ~1.5m from below the table to the top of table. This pump vacuum tube then transitions to the short (~30cm) 3mm OD vacuum chuck tube with a shut off valve and vacuum gauge in the transition region so that vacuum on the cooling unit can be held with monitoring after pumping.  Since the vacuum gauge connection are mostly SS, we also opt for SS parts: Push on hose fitting (McMaster-Carr #53515K31) with 3/8" barb for pump tube transition to 1/4" NPT followed by On/off valve (McMaster-Carr #45395K216) and 1/4" Tee (McMaster-Carr #4452K432) for vacuum gauge mount. The Tee port is compatible with the Omega OEM pressure transmitter PX119-015AI, with SS 1/4" NPT mount and a 0-15psi absolute pressure measurement range. This device with miniDIN 43650C connection can be read out by the Sequent Industrial Automation Raspberry Pi interface card that can supply the 24V needed pay PX119 WidgetLords Pi-SPi-8AI Raspberry Pi Analog Input Interface (the originally favored Sequent Industrial Automation Raspberry Pi interface card was sold out). The final connection to the vacuum chuck tube could use a nylon part with 1/16" barb and 1/4" NPT (McMaster-Carr #5153K37). Unfortunately here is no SS bodied corresponding part. The 1/16" (1.59mm) barb is a approx match to the vacuum chuck tube with ~1.8mm ID (adequate tightness to be verified). 

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Table for vacuum unit connections

Left pump port with 3/8" barb

High-Pressure Firm Polyurethane Rubber Tubing

ID:OD=3/8":5/8" Link

~1.5 m

316 Stainless Steel Push-on Hose Fitting for Air and Water

3/8" Hose ID, 1/4 NPT Male End Link

On/off valve

High-Pressure Compact 316 Stainless Steel On/Off Valve

with

Lever Handle

lock-able T-handle, 1/4 NPT Female x 1/4 NPT Male

Link

1/4" Tee

316 Stainless Steel Threaded Pipe Fitting

Low-Pressure, Tee Connector, 1/4 NPT Female

Link

Plastic Barbed Tube Fitting for Air and Water

Swivel Adapter, for 1/16" Tube ID (1.6 mm)x 1/4 NPT Male

Link

cern

Stainless Steel Instrumentation Quick Connect Stem with Valve, 0.2 Cv, 1/4 in. Male NPT

Link

SS-QC4-D-4PM

Stainless Steel Instrumentation Quick Connect Body, 0.2 Cv, 1/4 in. Female NPT

SS-QC4-B-4PF

Link

Plastic Barbed Tube Fitting for Air and Water

Swivel Adapter, for 1/16" Tube ID (1.6 mm)x 1/4 NPT Male

Link


cern tube

OD/ID=3mm/1.8mm

(~30cm)

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to be connect to Remote monitor vacuum pressure sensor (Omega PX119-015AI):

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Dry Air

The dry air filters were saved by Matt from BaBar, residing inside the curtained area of B84 EPP lab. House compressed air are filtered to let out through the flow meter with a max flow of 20 ft3/min. A 80ft long hard polypropylene tubing with 1/4" OD (McMaster-Carr #9349T2) takes the drive air down to the ATLAS benches. The dry air supply tube terminates at a diverting valve (no shutoff) (McMaster #45165K42) on the bench to allow the switching of the dry air between a test port and the through path to module cooling unit. The through path continues with the same type of tube to transition to the 30cm long dry air tube into the module cooling unit which is an ID/OD=1.8mm/3.0mm blue tube from CERN shipment (same as the vacuum tube). This transition uses a pair of Aluminum low-pressure 1/4 NPT adaptor to barbed tube fitting: 1/4" barb - male NPT (with O-ring) on supply side (McMaster-Carr #5058K441); 1/16" barb and female NPT on module side (McMaster-Carr #5058K641).

The initial turn on of dry air should let run for a few hours with the outlet going to the test port using the diverting valve. Check flow and humidity at the test port before flowing into the module cooling unit. Once on for operation, the dry air flow should not be turned off. From an off state, the restart should always have the few hours of initial flush first. During operations, if the dry air needs to be off at the module cooling unit, use the diverting valve to temporarily directing the air to the test port. 

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long hard polypropylene tubing with 1/4" OD

11/64" ID, 1/4" OD

 Link

~ 80 ft

Diverting Valve with Yor-Lok Fittings

for 1/4" Tube OD, 316 Stainless Steel Body

Link

Aluminum Low-Pressure Barbed Tube Fitting

for Air and Water, Adapter for  1/4" Tube ID

x 1/4 NPT Male

Link


Aluminum Low-Pressure Barbed Tube Fitting

for Air and Water, Adapter for 1/16"(1.6mm) ID Tube x 1/4 NPT Female

Link

cern tube

OD/ID=3mm/1.8mm

(~30cm)

default

 

one to application/ one to testing area

default

This part is not quite right - should be 1/4" OD. Should have looked harder for ideally a single part with Yor-lok for 1/4" OD tube at this end and 1/16" barb at the other end.

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  1. Check the Temperature distribution on the Peltier, temperature distribution is not flat on the cold side of Peltier while running the Peltier
  2. foam box can help isolate the Peltier system and increase the temperature difference between hot side and cold side
  3. running load will increase the temperature on the cold side


Results from chiller:

Tests with cooling setting:  

Testing results

Temperature Agreements:

Tests where done to see if the NTC and RTD temperature data was consistent at or near operating temperatures. As can be seen there is a drift where the RTD reads 2 ℃ lower then the NTC. However at room temperature this difference is reversed and reads about 1 ℃ higher. 

Name in resultsSensor, LocationAccuracyDataSheet

NTC_1

NTCG103JF103FTDS, On RD53A±.5 ℃https://product.tdk.com/system/files/dam/doc/product/sensor/ntc/chip-ntc-thermistor/catalog/tpd_automotive_ntc-thermistor_ntcg_en.pdf
NTC_2192-103LEW-A01, Taped to mounting plate of RD53A±1℃https://www.mouser.com/ProductDetail/Honeywell/192-103LEW-A01?qs=F1jq4PciTHu1X2%252BS%2F4fB2A%3D%3D
RTD_7pT100, Taped to mounting plate of RD53A±.15 ℃https://www.mouser.com/ProductDetail/Heraeus-Nexensos/32208550?qs=MQgg6%252BVqoaOPAnuE2NwxiQ%3D%3D
RTD_1pT100, Taped to mounting plate of RD53A±.15 ℃https://www.mouser.com/ProductDetail/Heraeus-Nexensos/32208550?qs=MQgg6%252BVqoaOPAnuE2NwxiQ%3D%3D
RTD_2pT100, Taped to mounting plate of RD53A±.15 ℃https://www.mouser.com/ProductDetail/Heraeus-Nexensos/32208550?qs=MQgg6%252BVqoaOPAnuE2NwxiQ%3D%3D
RDT_3

pT100, Taped to mounting plate of RD53A

±.15 ℃https://www.mouser.com/ProductDetail/Heraeus-Nexensos/32208550?qs=MQgg6%252BVqoaOPAnuE2NwxiQ%3D%3D





Room temperature, no load on moduleIn fridge, no load on moduleIn freezer, no load on module.
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The NTC on the modules are type NTCG103JF103FTDS. More information about these modules can be found at https://twiki.cern.ch/twiki/bin/view/Atlas/ItkPixModuleTesting#Reading_out_the_NTC_Module.

However the data sheet and the twiki about the sensors do not agree about the relationship between the resistivity and temperature. The differences is plotted below. Note Δt is the Data Sheet value minus the twiki results. In all our code the temperature is calculated via the data sheet values. 

     

Latex
\begin{equation}
\frac{1}{T} = \frac{1}{B} Log(\frac{R}{R_0}) + \frac{1}{T_0}
\end{equation}

With B = 3380, R0 = 10,000 Ohms and T0 = 25℃ 

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