Dwyer PUX - Manual (Page 99)

15 - 8
15.3 Specifications
Fluid conditions
•
Measured fluid: Homogeneous liquids (water, sea water, oil or fluid of unknown sound velocity)
capable of ultrasonic wave propagation
•
Turbidity of fluid: 10000 deg. (mg/L) or less
•
State of flow: Axis-symmetric flow in pipe filled with fluid
•
Fluid temperature: Small diameter sensor, – 40 to +100
°
C
Small sensor, [Standard] – 40 to +100
°
C
Large sensor, – 40 to +80
°
C
High-temperature sensor, – 40 to +200
°
C
•
Velocity range: –32 to 0 to +32m/s
Piping conditions
•
Pipe material: Steel, stainless steel, cast iron, vinyl-chloride, FRP, asbestos, aluminum, acrylic,
etc.
•
Pipe size: Small diameter sensor,
φ
13 to
φ
100
Small sensor,
φ
50 to
φ
400
Large sensor,
φ
200 to
φ
6000
High-temperature sensor,
φ
50 to
φ
400
•
Lining material: None, tar epoxy, mortar, rubber or material of known sound velocity
•
Straight pipe length: Upstream side, 10D or more
Downstream side, 5D or more (D: inner pipe diameter)
Refer to Japan Electric Measuring Instruments Manufactures’ Association’s stan-
dard JEMIS-032 for details.
Accuracy
Converter
•
Power supply: Built-in battery or power adaptor
•
Built-in battery: Special type Ni-MH battery
Continuous operation time, about 5 hours (without printer, back light OFF, with-
out current output, transmission voltage setting
×
1)
Recharging time, about 2 hours (power adaptor used)
•
Power adaptor: Special type power adaptor 90 to 264V AC, 47 to 63Hz or 10 to 30V DC
•
Power consumption: 12W or less
•
LCD display: Full dot graphic display
240 x 320 dot (with back light)
•
LED display: DC IN (green), FAST CHARGE (red)
•
Key pad: 10 keys (ON, OFF, , , , , ESC, ENT, LIGHT, PRINT)
•
Power failure backup: Memory backup with lithium battery (effective term, 5 years)
•
Response time: 1s or less
•
Output signal: 4 to 20mA DC, 1 point (load resistance, 0 to 1k
Ω
)
•
Input signal: 4 to 20mA DC (not isolated), 1 point
•
Serial communication: RS-232C (not isolated), 1 point
Transmission speed: Max. 9600 bps
Transmission distance: Max. 15m
•
Printer (option): To be mounted on top of converter
Thermal serial dot printing (8 x 256 dot)
•
Ambient temperature: –10 to +55
°
C (without printer)
–10 to +45
°
C (with printer)
•
Ambient humidity: 90% RH or less
•
Type of enclosure: Dust-proof type (IP50 or equivalent)
Pipe size
φ
13 to
φ
50 or less
φ 50 to φ 300 or less
φ
300 to
φ
6000
Flow velocity
2 to 32 m/s
0 to 2 m/s
2 to 32 m/s
0 to 2 m/s
1 to 32 m/s
0 to 1 m/s
Accuracy
1.5% of rate
0.03m/s
1.0% of rate
0.02m/s
1.0% of rate
0.01m/s
(Note) Reference conditions are
based on JEMIS-032.
BULLETIN F-68