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200/202 Series Flowmeters and Controllers Instruction Manual
1. General Information
The Hastings HFM-200 mass flow meter and HFC-202 flow controller are designed to accurately measure and
control mass flow over the range of 10 sccm to 30 slm, without corrections or compensations for gas pressure
and temperature with an accuracy of better than ±1% FS (Full Scale). Hastings mass flow instruments do not
require any periodic maintenance under normal operating conditions with clean gases. No damage will occur
from the use of moderate overpressures (~500 psi/3.45MPa) or overflows. Instruments are normally calibrated
with the appropriate standard calibration gas (nitrogen) then a correction factor is used to adjust the output
for the intended gas.
NOTICE: The instruments described in this manual may be available with multiple pinouts.
Ensure that all electrical connections are correct.
NOTICE: The instruments described in this manual are designed for INDOOR and DRY use only.
NOTICE: The instruments described in this manual are designed for Class 2 installations in
accordance with IPC standards.
CAUTION: There are no operator serviceable parts or adjustments inside the product.
CAUTION: If this equipment is used in a manner other than that specified, the protection
provided by the equipment may be impaired.
EAR99 Technology Subject to Restrictions Contained on the Cover Page
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