Omega Engineering FMG90 ユーザーズマニュアル

 

 

 

The technical data of customised versions may differ from the data in these instructions. 
Please observe the information specified on the type plate. 

Measurement device characteristics 
Flow range [GPM] 

0.066…1.3 0.26…5.3 0.66…13.2 1.3…26.4  2.6…53  3.3…66 

Accuracy 

1% of reading 

Repeatability 1% 
Output signal 
starting from [GPM] 

0.02 0.07 0.27 0.52 1.05 1.3 

Max. flow rate [GPM] 

1.6  6.6  15.8  31.7 63.4 79.3 

Response time 

< 100 ms 

Indications 

red LED = Supply voltage  •  green LED = Flow 

- Pulse rate / K-

Factor * 

[pulses/gal] 

15000 3000 1500 750 380 300 

- Resolution * 

[ml/pulse] 

0.25 1.0 2.5 5.0 10.0 

12.5 

Square wave signal • duty cycle 50:50 

- Signal shape 

can be connected as PNP or NPN open collector 

- Signal current 

≤ 25 mA 

Electrical characteristics 
Supply voltage 

24 VDC ±15% or 12 VDC ±15% 

Power consumption 

0.6 W 

Electrical protection 
measures 

short-circuit proof   •  protected against polarity reversal  

Electrical connection 

4-pin-plug M12x1 

Degree of protection 

IP 65 (only with a connected coupling) 

Process variables 
Medium to measure 

Water and other conductive liquids 

min. conductivity of 
the medium 

20 μS/cm 

Medium temp. 

14…140 °F (not freezing) 

Ambient temp. 

41…140 °F 

Nominal diameter 

DN 8 

DN 15 

DN 20 

DN 25 

Inner diameter 

0.31 inch 

0.55 inch 

0.71 inch 

0.98 inch 

145 psi (68 °F)  •  116 psi (104 °F)  •  87 psi (140 °F) 

Max. working 
pressure (at …) 

higher pressure ratings on demand 

Process connection 

½ - 14 NPT 

¾ - 14 NPT 

1 - 11.5 NPT 

1¼ - 11.5 

NPT