Toshiba GF630 Manual

Field Intelligent Device – Premium Value Series
Electromagnetic Flowmeter
Introduction
The electromagnetic flowmeter uses Faraday's Law of
electromagnetic induction to measure the process flow.
The device consists of two units: a detector, through
which the fluid to be measured flows and in which
low-level signals proportional to flow rates are
obtained; and a converter, which supplies excitation
current to the detector, and amplifies the signals from
the detector and then processes and converts the signals
into the 4–20mAdc current signal or communication
signal. Combined with a multi-functional converter
LF620 (combined type) or LF622 (separate type)
equipped with its original patented noise-suppression
circuit and advanced algorithms. The GF630 has a very
high tolerance to noise, giving the unit a very stable
output even for slurry fluid measurement. IR (Infrared)
switches enable the parameter setting of the converter
without removing the cover. Flow direction can be set
in either way, and its unique 128 x 128 dot matrix LCD
display allows the LCD to be rotated electronically to
90, 180 and 270 degrees without opening the cover.
The terminal block in LCD side make easy to wire in
case of the combined type.
The AF900 hand-held terminal (HART*
communicator) can be used to communicate with the
flowmeter from a remote place. PROFIBUS-PA*
3
Modbus* interface is available as an option.
*1: HART protocol (Highway Addressable Remote Transducer) is a communication
protocol for industrial sensors recommended by the HCF (HARTCommunication
Foundation).
*2: PROFIBUS is the communication protocol for factory and process automation that
the PROFIBUS Organization recommends. Instead of analog control with a
conventional analog signal (4-20mA), it is fieldbus which digitizes all signals.
Flowmeters support PROFIBUS-PA.
*3:Modbus is the communication protocol that Modicon Inc. developed. Physical
layer is RS485.
Combined type Combined type
Combined type Combined type
GF630/LF620 GF630/LF620 GF630/LF620 GF630/LF620
GF630/LF620F GF630/LF620F GF630/LF620F GF630/LF620F
Figure 1. Configuration
1 1 1 1
1
2
or
Separate type Separate type
Separate Separate type type
GF632/LF622 GF632/LF622 GF632/LF622 GF632/LF622
GF632/LF622F GF632/LF622F GF632/LF622F GF632/LF622F
15 to 600 mm (1/2" to 24")
GF630/LF620 GF630/LF620 GF630/LF620 GF630/LF620
GF630/LF600
GF630/LF620F GF630/LF620F GF630/LF620F GF630/LF620F
Figure2. GF630 Premium Value series Figure2. Figure2. Figure2. GF630 Premium Value series GF630 Premium Value series GF630 Premium Value series
Flowmeters Flow Flow Flow
Certification
number
Z01207

Specifications

Overall Specifications
Measurement range in terms of flow velocity:
0 – 0.3 m/s to 0 –10 m/s (0 –1.0 ft/s to 0 – 32.8 ft/s).
0 – 0.1 m/s to 0 – 0.3 m/s (0 – 0.3 ft/s to 0 – 1.0 ft/s)
range is available optionally for meter size 1/2" to
18" (15 to 450 mm).
Accuracy:
< 1/2" to 18" (15 mm to 450 mm) >
± ± ± ± 0.2 % of Rate *1.
* This pulse output error result is established under standard
operating conditions at Toshiba's admitted flow calibration
facility.
* Individual meter measurement error may vary up to ±0.5% of
Rate at 1.64 ft/s (0.5m/s) or more. Or it may vary up to ±0.3%
of rate ±0.039 inch/s (1mm/s) at 1.64 ft/s (0.5m/s) or less.
* Current output: plus ± 8µA (0.05% of span).
* Refer to individual calibration data for each individual meter's
measurement error.
GF630 /LF620
GF632 /LF622
LF622 LF622 LF622 LF622
GF632 GF632 GF632 LF602
GF632 GF632
LF622F LF622F LF622F LF622F
meters meters meters
Certification
No. PM09896
For PU lined flowmeter
EJL- - - - 140 EJL 140D D D D
EJL EJL 140 140