gohastings.com Hastings Entertainment Oxygen Equipment HFM-I-401 Manual De Usuario

 

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These instruments contain a number of functions in addition to reporting flow which include:  

•  Settable alarms and warnings with semiconductor switch outputs   
•  A digitally reported status of alarms and warnings such as overflow/underflow  
•  A flow totalizer to track the amount of gas added to a system 
•  A digitizing channel for an auxiliary analog signal   
•  An internal curve fitting routine for “fine tuning” the base calibration  
•  An alternate calibration set of 8 different ranges/gases 

   

 
 
 
 

 
 

Full Scale Flow Ranges 
(in N

2

) 

 0-10 slm up to 0-350 slm 

  0-100 slm up to 0-2500 slm 

Accuracy

1

 

± 1% full scale  Standard: 

± 1% full scale  

  

Optional:  ± (0.5% reading + 0.2%FS)  

Optional:  ± (0.5% reading + 0.2%FS)  

Repeatability 

± 0.1% of F.S. 

± 0.1% of F.S. 

Operating Temperature 

 -20 to 70°C 

 -20 to 70°C 

Warm up time 

30 min for optimum accuracy 

30 min for optimum accuracy 

  

2 min for ± 2% of full scale 

2 min for ± 2% of full scale 

Settling Time/Reponse 
Time 

< 2.5 seconds (to within 

± 2% of full scale) 

< 2.5 seconds (to within 

± 2% of full scale) 

Temperature Coefficient 
of Zero 

<  

±0.05% of Full Scale /°C 

<  

±0.05% of Full Scale /°C 

Temperature Coefficient 
of Span 

<  

±0.16% of reading/°C  

<  

±0.16% of reading/°C  

Operating Pressure -
Maximium 

500 psig Standard: 

500 psig 

  

Optional:  1500 psig 

Optional:  1000 psig 

Pressure Coefficient of 
Span 

< 0.01%of reading /psi      (N

2

, 0-1000 psig) 

< 0.01%of reading /psi      (N

2

, 0-1000 psig) 

Pressure Drop(N

2

@14.7 

psia) 

< 1.1 psi at full scale flow 

< 5.1 psi at full scale flow 

Attitude Sensitivity of 
Zero 

< 2% of F.S.  

< 2% of F.S.  

  

  

  

  

  

Power Requirements 

18-38 VDC, 3.5 watts(Ethernet) 2.5 
watts(RS232/485) 

18-38 VDC, 3.5 watts(Ethernet) 2.5 
watts(RS232/485) 

Analog Output  

4 – 20 mA  Standard: 

4 – 20 mA  

  

Optional:   0-10 VDC, 0-20 mA, 0-5 VDC, 1-5 VDC  Optional:   0-10 VDC, 0-20 mA, 0-5 VDC, 1-5 VDC 

Digital Output  

RS 232  Standard: 

RS 232  

  

Optional:  RS 485  

Optional:  RS 485  

  

Optional:  Ethernet  

Optional:  Ethernet  

Analog Connector  

Terminal Block – PG 9 Cable Gland Std: 

Terminal Block – PG 9 Cable Gland 

  

Optional:  12 pin Circular Connector 

Optional:  12 pin Circular Connector 

 

Do not operate this instrument in excess of the specifications 
listed below.  Failure to heed this warning can result in serious 
personal injury and/or damage to the equipment.