CU004/007 Calibration unit
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3.1 Specifications
3.2 The control unit
The CU004/CU007 contains four/seven inlet valves, and a flow regulator at the outlet. The
CU004/CU007 is housed in a casing to be installed vertically on a wall, away from the gas
analyser. All gas connections must be made in well ventilated areas. Figure 3.2 shows the
internal of the CU004/CU007.
Control unit
Input voltage 120 V
AC
(± 10 %), 0.4 A
240 V
AC
(+6 %, -10 %), 0.2 A
Fuse ratings 1 × 2 A (120 V)
1 × 1 A (240 V)
Power requirement max. 45 W
Interface serial port in gas analyser, COM1 - COM7
Dimensions (L × W × H) 330 × 120 × 290 mm
Weight (approx.) 9 kg (20 lbs)
Operating temperature 0 °C to 30 °C (30 °F to 85 °F)
Degree of protection IP 30
Number of gas inlets 4 or 7 (CU004 and CU007 respectively)
Materials in valves stainless steel / viton
Gas connections Swagelok SS-400 series
Gas tube outer diameter 1/4"
Maximum inlet pressure 3.5 bar (50 psi)
Flow meter range 0 to 250 l/hour
Cable lengths (standard)
Analyser - CU004/CU007 2 metres (6 ft)
CU004/CU007 - receiver ordered fibre optic cable length + 1 metre (3 ft)
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