Brooks GT1600, Инструкция по установке и эксплуатации

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Section 1
Inductive Alarms,
Alarm Contacts Meter Sizes 2 and 6
Inductive coils for high and/or low flow alarm may be mounted to the
instrument to create a highly sensitive, stable and accurate device for
signaling high or low flows or deviations from a controlled flow. The inductive
alarm can only be used in combination with 316 SS or Carboloy
®
ball floats.
The alarm points may be adjusted over the entire flowmeter range and be
set so that any two contacts may be made to operate simultaneously. For
hazardous area applications Brooks can supply an approved Namur power
supply amplifier/relay unit to obtain an intrinsic safe current circuit.
(Please refer to Table 1-4).
Table 1-9 Data 10 & 15-14-N3 Inductive Coils
Operating Fluid Temperature Limits
Reed Switch: Same as meter
Inductive: 167°F (75°C) max.
Alarm Hysteresis
8mm typical (0.32 in) .
Alarm Accessories
Remotely mounted, switch isolator/power supplies are required for inductive
alarms and recommended for reed switch alarms. One or two single-pole,
double-throw (SPDT) relays are available with either 110 or 220 AC volt units.
Optional Needle Valves
For flow rate control, needle valves may be integral to the inlet or outlet side
of the instrument. Note, solenoid valves should not be used because this
type of valve can cause pressure shocks which can damage the glass tube.
Power Supply
Current Consumption
Current Consumption
Self Inductance
Self Capacitance
Max. Temperature
Enclosure Type:4
EMC Directive
8 volt normal (max. 15>5 Vdc)
Active area clear: > 3 mA
Active area obscured: < 1 mA
70 µH
90 nF
75°C
IP67
EN 60947-5-2 DIN EN 60947-5-6 (Namur)
14 15