1. PARTS 4 analog ports (AMBZ,IONG, 2 others): back 3 ports for MFC (IONF1, IONM1,DIL): back 4 round ports (FT, INTERLOCK, CALT, AMBZ): back 2 bottom round ports (CAL, DIL): back 3 tiny ports (CAL, INP L&H, DP L&H): back 2 USB ports: back? outside? Video/monitor port: back? outside? Athena power switch: outside? back? 3 MFC: inside, back P-controller: front 3 p-gauges: back? Hot cal system: front, bottom Athena SBC: bottom Athena BB: inside? Valve driver board: inside? Voltage distribution strip: inside? F-regulator/p-gauge: bottom 3 ion reagent bottles: bottom? outside? Manual valves: front Fan: back? outside? Ventilation holes: inside & outside Rack mount unit: 1.75 in H = 1.750n – 0.031 (1/32 in spacing between) Current: 8 U = 14 in

2. TOP Mounted to top None 22 in = 558.8 mm 17 in = 431.8 mm Notes None Scale = ¼ Front Panel Notes Housing profile 2 (removable) Width = 17 in – 20.2 mm = 16.205 in, 411.6 mm Height = 22 in = 558.8 mm Corner radius = 0 Cavity along each 22 in side inside facing cavity height = 22 in + 3 mm = 22.12 in width = 8.5 mm = 0.335 in depth = 2.5 – 2 mm = 0.5 mm = 0.0197 in corner rad = 1.5 mm = 0.0591 in Mounting holes countersinking 3.0 mm DIN74-A inset = 3.9 mm = 0.154 in max edge = 10 mm = 0.3937 d: min = 50 mm (11), max = 100 mm (6) 538.8/6 = 89.8 mm (7 total)

3. BOTTOM Mounted to bottom Hot cal oven Athena SBC Ion regulator? 22 in 17 in 12.25 in 7.375 in 1 in Notes -Ion bottles: mounted to bottom w/ hose clamp -Ion regulator: mounted to side w/ collar? Mounted to front? 5.5-6 in 2.5 in 19 in 4.175 in 4.475 Athena SBC MFC Cal oven 6+9 in 1.75 in ion bottle ion mount p-contr ion reg watlow Scale = ¼ Front Panel Notes Housing profile 2 Width = 17 in – 20.2 mm = 16.205 in, 411.6 mm Cavity (outside), both sides width = 6.5 mm = 0.256 in height = 22 in + 3 mm = 22.12 in depth = 1 mm, 0.03937 in Oven: McMaster-Carr 91075A454 #8-32 thread = M4 (metric) x1 = 1.5625 + 0.5 in = 52.39 mm x2 = 5.3125 + 0.5 in = 147.64 mm y1 = 4.0625 – 1 in = 77.79 mm y2 = 8.1875 – 1 in = 182.56 mm Athena: Diamond Systems, III w = 4.175 in, l = 4.475 in (5.375 x 5 in) #4-40 thread = M3 (metric); PC 104 kit Mounting: 3.125 x 3.375 x 2.875 in 1 in top, 1 side side

4. SIDE 1 - FRONT Mounted to front Watlow Bicarb filter F valve (needle) N2 valve (on/off) Ion reg (mnt/access) Cal system access Handles 19 in 6 U = 10.5 in Notes - Ion regulator replace p-gauges w/ digital one (approx 2.5 in); front knob smaller (1-1.5 in?) - P-contr: ports either flat bottom or VCR-SwgLk adapter - Profile 2, case 1 17 in oven p-contr watlow HCO3 filt N2 valve F valve ion reg 5 U = 8.75 in Scale = ¼ Front Panel Notes Height = 5 U = 5*1.75 – 0.031 = 8.719 in Length = 19 in total, 17 in box Corner radius = 2 mm Housing screws = 5.2 mm each corner Watlow: EZ-Zone PM6 Mounting: 1.77 to 1.79 in 2 4 in bottom, 4 in side P-contr: Horiba STEC, UR-Z712M 2-M4 50depth; 20 mm x 15 mm V-S: l = 6.173 in, 156.8 mm 6 in bottom, 6.5 in side Filt holes: d = 1 in, y = 6 in; 11 in side filter approx 5.5 in long Oven: McMaster-Carr #91075A454 h = 0.75 in = 19 mm (standoff) h = 1.375 in, w = 7.375 in + 0.25 placement: h = 1.5/2+0.75-1/16 in = 36.51 mm w = 7.5/2+0.5-1/16 in = 108 mm Ion reg: Air-Liquide F2 regulator d = 2 in, a = 2.5 in; #10 (M5) N2 valve: bulkhead, 0.5 in (12.7 mm)? halfway bottom, 12.5 in side F valve: bulkhead, 0.5 in (12.7 mm)? halfway bottom, 14 in side Handles: Digi-Key (36-490-ND, e.g.) 4.5 in = 114.3 mm apart; M5 outside box

5. SIDE 2 - BACK Mounted to back 4 9-pin ports: AMBZ, IONG, and 2 other 3 MFC ports: IONF1, IONM1, DIL1 Power Square connection 4 round ports: FT, INTERLOCK, CALT, AMBZ 2 lrg bulkhead : CAL, DIL 3 (4?) sml bulkhead: CAL, combine INP L&H, DP L&H 2 USB Athena power switch Video (monitor) port 6 U = 10.5 in 17 in 5.5-6 in 1.125 in 5 U = 8.75 in MFC Notes Copying current box w/ added USB&Mntr Athena: h=3.75,l=4.625 in Athena Scale = ¼ Monitor USB Pwr 9-pin gas suply electronics Front Panel Notes Height = 5 U = 5*1.75 – 0.031 = 8.719 in Length = 17 in Corner radius = 2 mm Housing screws = 5.2 mm each corner P-gauge: MKS Baratron Model 750C; Mnt: McMaster 8981T78 x=4.25 in; l_c=5 in, h_c=1.25 in; l_b=3.75 in, #10=M5 5 in top, 7.75 in side Gas suply (sml): bulkhead port, 1/8 in; d = 3/16 in; 1.5 in bottom Gas suply (lrg): bulkhead port, 1/4 in; d = 3/8 in; 1 in bottom 9-pin ports: 0.5 in top (cntr), 1.5 side/each (cntr); copied E box Power: (1 in); 1.5 in side, 1.6 in top; copied E box (?) Ethernet: 3.5 side, 1.6 in top; copied E box USB: 2.75 in top, 1.5 in side; copied E box Monitor: 15 pin (1241-1022-ND), 1 in lower, copied E box Electronics: (3/4 in); 0.75 top, 1.5 in side, 1.25 in each; sml E box MFC ports: 0.5 in diameter; 0.5 in side, 0.5 bottom, 0.5 spacing (match MFC)

6. SIDE 3 - INSIDE Mounted to inside 3 MFC Athena BB Voltage supply strip Cool drive P-gauges? Diff p-gauge? 22 in 6 U = 10.5 in 12.25 in 1 in 1.375 in 3.75 in 4.625 in 2.512 in Notes Oven mounting: h = 0.5 + 1.375 = 1.875 w = 11.25 in 6 in 2.3 in 1.125 in 5 U = 8.75 in Athena BB Cool Drive Cal oven V suply p-gauge MFC Scale = ¼ vent Front Panel notes Height = 8.719 in – 20.2 mm = 7.924 in, 201.26 mm Cavity (outside), both sides height = 6.5 mm = 0.256 in width = 22 in + 3 mm = 22.12 in depth = 1 mm, 0.03937 in MFC: Horiba STEC, Z512 MGX holes: 21.9 mm end, x=20 mm, y=15 mm; 2-M4 50depth Flat bottom: w = 3 in (76.2 mm), h = 28 mm 0.25 in side, 0.5 bottom, 0.25 spacing P-gauge: MKS Baratron Model 750C; Mnt: McMaster 8981T78 x=4.25 in; l_c=5 in, h_c=1.25 in; l_b=3.75 in, #10=M5 4.5 in side, 1 in top Athena BB: y=88.11 mm, x=109.5 mm, #6-32 = M3.5 h=3.75,l=4.625 in; 1 in top, 8.5 in side CoolDrive: NResearch Incorporated holes: x=5.7 in, y=2 in, #4-40 (M3); body: x=6 in, y=2.3 in 1 in side, 1 in top = 101.6 mm side, 54.61 mm V-suply: x=3.375 in, h=, w= ; M3?; 5.5 in side, 1 in bottom Vent: x=0.1 in, y= 1 in, 8 slits; 2 in bottom, 1 in side

7. SIDE 4 - OUTSIDE Mounted to outside wall Fan P-gauges (2) Ion regulator? 22 in 6 U = 10.5 in 6+3 in 1.75 in fan 3.15 in ion bottle ion mount Notes Athena: Diamond Systems, III; 2 or 3 pressure gauges? offset? Ion regulator mounting? 5 U = 8.75 in Athena Ion reg Scale = ¼ vent Front Panel notes Height = 8.719 in – 20.2 mm = 7.924 in, 201.26 mm Cavity (outside), both sides height = 6.5 mm = 0.256 in width = 22 in + 3 mm = 22.12 in depth = 1 mm, 0.03937 in Fan: Digi-Key, Sunon Fans ME80252V1-000U-A99 size= 80 mm x 80 mm x 25 m; 1 in top, 1 in side P-gauge: MKS Baratron Model 750C; clamps: McMaster 8981T78 x=4.25 in; l_c=5 in, h_c=1.25 in; l_b=3.75 in, #10=M5 2 in vents on side, 1 in top 3 in p-gauge clamp on side, 1 in top Ion bottles: mounted to bottom y = 5 in; metal bar w/ feet and hose clamp Vent: x=0.1 in, y= 1 in, 8 slits; 2 in bottom, 1 in side p-gauge

8. FRONT PANEL VIEW (outside looking in)

9. N2 Gas heating Channel 1 Channel 2 Channel 3 Insulated cap Critical Orifice CIMS p-controller Hot Calibration Oven Heater, RTD, Watlow, insluation; pressure controller Three channels; gas heating split with two Swagelok PFA tees Accessible via the front of the gas box, sticks out