WEBTEC 1 Série Manuel D'utilisation page 11

EU (lpm/Centigrade)
Model Flow Range
Number (lpm)
DHT302-B-6 8 - 300
DHT402-B-6 10 - 400
DHT602-F-3-L 20 - 600
DHT602-S-7-L 20 - 600
DHT802-F-3-L 20 - 800
DHT802-S-7-L 20 - 800
US (gpm/Fahrenheit)
Model Flow Range
Number (gpm)
DHT302-S-6 2 - 80
DHT402-S-6 2.5 - 100
DHT602-F-3 5 - 160
DHT602-S-7 5 - 160
DHT802-F-3 5 - 210
DHT802-S-7 5 - 210
* per J518 SAE Code 61 standard
Flow Accuracy: ± 1% of indicated reading (over 15 - 100% of range).
Pressure Accuracy: ±1.6% of full scale.
Temperature Accuracy: ± 1°C, 2°F.
Speed: Needs optional infra-red phototachometer using one or more reflective marks.
Range 300 - 6000 rpm. Accuracy: ± 1/4% of full scale with one count per revolution.
External Flow - EXT
1. Turn selector switch to Ext.Flow.
2. Press °C/°F button and hold down. Then press ON i.e. two buttons are pressed at the same time.
3. On the left side of the display appears the turbine type number i.e. 750 is 750 lpm, on the right
side of the display is the standard calibration number. Use the FAST key to browse through the
list of turbine types. Press UNITS to select a turbine type.
4. Use the FAST key to increment the number above the cursor. Press UNITS to move to the
next column. After entering the calibration factor press UNITS until the display overflows. The
display will now show the number of digits after the decimal point. Use the FAST key to select
the number of decimal places to appear on the display.
5. Press the ON button to store the entries.
Internal Flow - INT
The internal calibration factor can be loaded by switching to INT and repeating the program
instructions above.
TACH
The calibration factor for RPM is pre-programmed for a factor of 1.0. For the RPM/N function
the tachometer provides N pulses per revolution of the shaft.
To set factor N:
1. Turn selector switch to TACH.
2. Press °C/°F button and hold down. Then press ON i.e. two buttons are pressed at the same time.
3. The display shows the current value for "N". Use the FAST key to increment the number above
the cursor. Press UNITS to move to the next column.
4. Press the ON button to store the entries.
Specification
Pressure Range
(bar)
0 - 420
0 - 420
0 - 210*
0 - 480
0 - 210*
0 - 480
Pressure Range
(psi)
6000
6000
3000*
7000
3000*
7000
Program Mode - EXT, INT and TACH.
Speed
Inlet/Outlet Ports
(rpm)
300 - 6000
300 - 6000
300 - 6000 1-1/2" SAE Code 61 4-Bolt Flange
300 - 6000 1-7/8" -12UN #24 SAE ORB
300 - 6000 1-1/2" SAE Code 61 4-Bolt Flange
300 - 6000 1-7/8" -12UN #24 SAE ORB
Speed
Inlet/Outlet Ports
(rpm)
300 - 6000 1-5/16" -12UN #16 SAE ORB
300 - 6000 1-5/16" -12UN #16 SAE ORB
300 - 6000 1-1/2" SAE Code 61 4-Bolt Flange
300 - 6000 1 7/8" -12UN #24 SAE ORB
300 - 6000 1-1/2" SAE Code 61 4-Bolt Flange
300 - 6000 1 7/8" -12UN #24 SAE ORB
1" BSPP
1" BSPP
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