Specifications
| Specifications | ||
| General | ||
| Power requirements | 85 V ac to 264 V ac, 47 Hz to 440 Hz, 18 VA max consumption | |
| Normal operating temperature range | 15 °C to 30 °C (59 °F to 86 °F) | |
| Storage temperature range | -20 °C to 70 °C (-4 °F to 158 °F) | |
| Vibration | Meets MIL-T-28800D | |
| Weight | 6.8 kg (15 lb) max | |
| Dimensions (WxHxD) | 32 cm x 12 cm x 30 cm (12.6 in x 4.7 in x 11.8 in) approx. | |
| Communication ports | RS-232 (COM1), RS-232 (COM2), IEEE-488.2 | |
| Pressure connections (molbox2 and molbloc) | Quick connectors equivalent to Swagelok® QM Series (SS-QM2-B200) | |
| Flow ranges | <1 sccm to >5000 slm. See separate molbloc-L and molbloc-S range tables | |
| Flow measurement rate | 340 milliseconds | |
| Gases supported (Consult your sales representative for a current list of gases available for factory molbloc calibration.) |
Nitrogen (N2), Air, Argon (Ar), Carbon Monoxide (CO), Helium (He), Oxygen (O2), Carbon Dioxide (CO2), Carbon Tetrafluoride (CF4), Ethane (C2H6), Ethylene (C2H4), Fluoroform (CHF3), Hexafluoroethane (C2F6), Hydrogen (H2), Methane (CH4), Nitrous Oxide (N2O), Propane (C3H8), Sulfur Hexafluoride (SF6), Butane (C4H10), Octafluorocyclobutane (C4F8), Xenon (Xe), Propylene (C3H6), Acetylene (C2H2), Neon (Ne), Krypton (Kr), isoButane (iBtn), Deuterium (D2), Natural Gas (NG)
*Availability to add custom gases and mixtures not currently on the molbox2 |
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| Valve driver option | (8) 12 V outputs. Each output can sink 500 mA at 12 V, max 1 Amp total | |
| MFC control option (analog input/output) |
Nominal voltage range: 0 V dc to 6 V dc input, 0 V dc to 5 V dc output Nominal current range: 4 mA to 20 mA input, 4.01 mA to 20 mA output Accuracy: ± 0.1 % FS (set), ± 0.05 % FS (measure) |
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| Pressure Measurement | ||
| Type | Q-RPT Characterized Quartz Reference Pressure Transducers – Oscillating quartz crystal with mechanical bellows |
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| Calibrated pressure range (full scale) | ||
| A700K | 0 to 600 kPa absolute (0 to 87 psia) | |
| A350K | 0 to 300 kPa absolute (0 to 44 psia) | |
| S A1.4M (molbloc-S only) | 0 to 1.2 MPa absolute (0 to 174 psia) | |
| S A2M (molbloc-S only) | 0 to 2 MPa absolute (0 to 290 psia) | |
| Measurement uncertainty (one-year) | ||
| Absolute pressure⁴ | ± (0.01 % of reading or 0.003 % Q-RPT span, whichever is greater) | |
| Differential pressure (A700K with Tare) | ± (8.4 Pa (0.0012 psi) or 0.032 % ΔP, whichever is greater) | |
| Differential pressure (A350K with Tare) | ± (4.2 Pa (0.0006 psi) or 0.026 % ΔP, whichever is greater) | |
| Temperature Measurement | ||
| Type | molbloc PRTs with molbox2 Ohmic Measurement System | |
| Range (FS) | 0 to 40 °C | |
| Resolution | 0.01 °C | |
| molbloc PRT precision | ± 0.02 °C (15 to 30 ˚C) | |
| S A2M (molbloc-S only) | 0 to 2 MPa absolute (0 to 290 psia) | |
| On-board | ||
| Reference resistor | 100 and 110 W ± 0.01 %, stability < 25 ppm/year | |
| Ohmic measurement | ± 0.02 % of reading (15 °C to 30 °C) | |
| Flow Measurement | ||
| with molbloc-L laminar flow elements | ||
| Standard molbloc calibration | Premium molbloc calibration | |
| Range | 0 to 100 % molbloc full scale | 0 to 100 % molbloc full scale |
| Resolution | 0.0015 % FS | 0.0015 % FS |
| Precision¹ | 0.07 % of reading, ± 0.007 % FS under 10 % FS |
0.07 % of reading, ± 0.007 % FS under 10 % FS |
| Stability (one-year)² | ± 0.09 % of reading, ± 0.009 % FS under 10 % FS |
± 0.03 % of reading, ± 0.003 % FS under 10 % FS |
| Measurement uncertainty³ (For any gas for which the molbloc in use is calibrated) | ± 0.2 % of reading, ± 0.02 % FS under 10 % FS |
± 0.125 % of reading, ± 0.0125 % FS under 10 % FS |
| Measurement uncertainty⁵ (For any molbox2 supported gas that Fluke is accredited and the molbloc in use is NOT calibrated in actual gas) | ±0.5 % of reading from 10 % to 100 % FS, ±0.05% FS under 10 % FS | ±0.5 % of reading from 10 % to 100 % FS, ±0.05% FS under 10 % FS |
| Measurement uncertainty⁶ (For any molbox2 supported gas that Fluke is not accredited and the molbloc is use is NOT calibrated in actual gas) | ± greater of 0.5% reading, 0.05% full scale, or root sum square*[0.2% reading, gas property uncertainties] | ± greater of 0.5% reading, 0.05% full scale, or root sum square*[0.2% reading, gas property uncertainties] |
| with molbloc-S sonic nozzle flow elements | ||
| Standard molbloc calibration | Premium molbloc calibration | |
| Range | 10 to 100 % molbloc full scale | 10 to 100 % molbloc full scale |
| Resolution | 0.0015 % FS | 0.0015 % FS |
| Precision¹ | ± 0.06 % of reading | ± 0.06 % of reading |
| Stability (one-year)² | ± 0.05 % of reading | ± 0.03 % of reading |
| Measurement uncertainty³ (For any gas for which the molbloc in use is calibrated) | ± 0.2 % of reading | ± 0.125 % of reading |
| 1. Precision: Combined linearity, hysteresis, repeatability. 2. Stability: Maximum change in zero and span over specified time period for typical molbox and molbloc used under typical conditions. As stability can only be predicted, stability for a specific molbox and molbloc should be established from experience. 3. Measurement uncertainty: Maximum deviation of the molbox2 flow indication from the true value of the flow through the molbloc including precision, stability and Fluke calibration. 4. With regular use of Autozero. Add 0.005 % of Q-RPT span for one year without use of AutoZero, (translates to 0.005 % FS for molbloc-S, does not significantly affect molbloc-S standard calibration or molbloc-L uncertainty.) 5. Measurement uncertainty of a gas other than N2 that Fluke has experience with but the molbloc does not have an actual gas calibration. 6. Measurement uncertainty of a gas other than N2 that Fluke does not have experience with and the molbloc does not have an actual gas calibration. |
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