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Våg för flaskpaket - 5
QMT 7-217800 Våg för flaskpaket - 5 är byggd
efter en genomtänkt konstruktion, där också
många värdefulla synpunkter från användarna
har tagits tillvara. Flexibilitet och stryktålighet har
varit några av ledstjärnorna, utan att vi därför har
gjort avkall på noggrannhet eller driftsäkerhet.
Förutom vägning av pallar, så kan vågen användas även i andra sammanhang för en rationell
godshantering. Vågen finns i kapaciteten 2000 kg
med upplösning 0,5 kg. Som utrustningsalternativ
kan vågen även kopplas till ett larmsystem.
Vågen är försedd med handtag och hjul för enkel
förflyttning.
Uppbyggnad
Den mekaniska konstruktionen är utförd i en s k U-lådbalkform, som ger största möjliga stadga och
styvhet. Hela konstruktionen består av väldimensionerade, pulverlackade och noga sammansvetsade
ståldetaljer. Detta ger vågen de grundläggande egenskaper, som behövs för att uppfylla de högt ställda
kraven på noggrannhet. Den sinnrika infästningen av de fyra typgodkända lastcellerna med sina rörliga
fötter, en i varje ”hörn”, innebär vägningar med hög precision. Infästningsmetoden medverkar också
till att stryktåligheten blir större än vad som är vanligt. Lastcellerna är inkapslade i ett dammtätt hölje
(IP67) av förnicklat stål, vilket också gör dem mycket miljötåliga. Den medföljande kabeln från lastcellernas kopplingslåda levereras i en standard-längd om 4 meter.
Beträffande olika alternativa våginstrument hänvisas till våra separata datablad.
Garanti
Ett års garanti från leverans.
Underhåll och kalibrering
Vid behov av noggranna mätresultat bör vågen testas 1 gång varje år. Utför provvägningen med spårbara vikter.
Två stycken tester är nödvändiga för att se ifall vågen fungerar korrekt.
1. Kontrollera att vågen mäter rätt genom att väga spårvikter.
2. Testa varje lastcell genom att väga i varje hörn för sig.
Kontrollera även att vågen står jämnt och ingenting ligger emot den.
Vid behov av kalibrering, se separat instruktion för våginstrumentet eller signalförstärkaren.
Vågen ska stå i torr miljö. Ifall produkten utsätts för väta och det tränger in i lastcellerna ska de bytas.
Kontakta Qmt-tech för support.
Adress
Amerikavägen 6
393 56 KALMAR, Sweden
Telefon
+46(0)480 44 02 00
Telefax
+46(0)480 44 00 10
Hemsida/ e-post
www.qmt3.com
[email protected]
Tekniska data Våg - 5
Kapacitet: Största avvikelse max: Temperaturområde: Lastceller: Täthetsklass lastceller: Matningsspänning: Accepterad överlast: Utimpedans: Yttre dimensioner: Egenvikt: 0 - 1500 kg, 0 - 2000 kg
0,5 kg
-10 till +40ºC
4 st. OIML-godkända i klass C3 med ledad fot.
IP67
5-15 V
150%
87 ±3 Ω
1250 x 840 x 84
ca 39 kg
Kopplingsschema
Måttritning
840
1250
84
Beställningsinformation
Artikel
Artikelnummer
Våg för flaskpaket - 5 QMT 7-217800
Utrustningsalternativ för anslutning till Qmt Larmsystem Masterwatch 4
Signalförstärkare CPJ
Adress
Amerikavägen 6
393 56 KALMAR, Sweden
Telefon
+46(0)480 44 02 00
Telefax
+46(0)480 44 00 10
Hemsida/ e-post
www.qmt3.com
[email protected]
The CPJ device is a sensor analog conditioner.
It is mainly used with strain gauges sensors as
load cells, torque sensors or pressure sensors.
The CPJ2S version includes management of 2
adjustable set points.
CPJ, DIN rail model
CPJ, Board model
CPJ, P65 Housing model
Adress
Amerikavägen 6
393 56 KALMAR, Sweden
Telefon
+46(0)480 44 02 00
Telefax
+46(0)480 44 00 10
Hemsida/ e-post
www.qmt3.com
[email protected]
Specifications, CPJ
Power supply 24+/-4 VDC
Accuracy class 0.05%
Zero temperature drift <0.035%/°C (FS*)
Span temperature drift <0.02%/°C (FS*)
Operating temperature range 0…+70°C
Sensor supply voltage (jumper selection) 3, 5, 10 V
Min. sensor impedance - voltage 3, 5 V 80 Ω
- voltage 10 V 160 Ω
Span adjustment 0.15 … 12 mV/V
Max. supply current CPJ/CPJ2S 120/170 mA
Voltage output +/-10, 0-10 V
Current output 4-20 mA
Load impedance (Voltage output) >2000 Ω
Load impedance (Current output) <500 Ω
Output capacitive load <1 nF
Filter (jumper selection) 10 Hz
Bandwidth (up to) 20 KHz
*FS = Full Scale
Wiring and setting devices positionning
Sensors connection,
Optional potentiometer input
Power supply and analog outputs,
Optional potentiometer input
Shunt calibration / control
Sensors connection,
Optional potentiometer input
Zero adjustment
Sensor sensitivity selection
Power supply and analog outputs
Span adjustment
Sensor signal filtering
Adress
Amerikavägen 6
393 56 KALMAR, Sweden
Telefon
+46(0)480 44 02 00
Telefax
+46(0)480 44 00 10
Hemsida/ e-post
www.qmt3.com
[email protected]
Sensors connection
The CPJ is able to manage up to 4 load cells (350 Ω) connected in parallel through an ALCJB junction box.
Sensor supply voltage
Set the jumper in position corresponding to the selected voltage : 3 VDC, 5 VDC or 10 VDC.
The load cells are generally supplied in 5 V (default value).
3 V voltage is useful for some particular sensors, 10 V is recommended for low sensitivity (or low
output signal) sensors.
Warning :
- With 10 VDC supply voltage, only 2 load cells (350 Ω) can be connected.
- For load cells used in ATEX area and protected by Zener barriers, do not use 10 V supply voltage.
Power supply and analog outputs
4/20 mA current analog output and 0/10V voltage analog output can be used simultaneously. The
‘Gnd’ points are internally connected in the circuit board.
Telefon
Adress
+46(0)480 44 02 00
Amerikavägen 6
393 56 KALMAR, Sweden
Telefax
+46(0)480 44 00 10
Hemsida/ e-post
www.qmt3.com
[email protected]
Sensor signal filtering
The filter is a second order low-pass type with 10 Hz cutting frequency.
The filter is generally used to eliminate troubles caused by vibrations of the installation.
If a quick response time is necessary, it’s recommended to disable the filter.
Enable filtering
Jumper to set filter
Sensor sensitivity selection
To get the correct signal on the analog output (0/10 V or 4/20 mA), set the sensor sensitivity jumper according to the following table:
Note: The load cell sensitivity is indicated on the quality control sheet attached with the load cell.
Positionning of configuration jumper
Example
• Load cell with 500 kg capacity and 2 mV/V
sensitivity.
Load cell supply voltage : 5 V
• Maximum load to be measured :
200 kg for 10 V
• Sensitivity for a 200 kg load =
(200 kg/500 kg) x 2 mV/V = 0.8 mV/V
• The jumper will be set in position number 3
Adress
Amerikavägen 6
393 56 KALMAR, Sweden
Telefon
+46(0)480 44 02 00
Telefax
+46(0)480 44 00 10
Hemsida/ e-post
www.qmt3.com
[email protected]
Zero adjustment
• Verify that no load (except the load receptor) is applied on the load cell.
• Approach the zero with P2 potentiometer and make a fine adjustment with P3 potentiometer.
- Analog output 0/10 V : voltmeter displays 0 V.
- Analog output 4/20 mA : ampere meter displays 4 mA.
Span adjustment
• After zero adjustment, apply a known load on the load cell.
• Adjust span with P1 potentiometer until the analog output signal complies with the applied load.
Example : If the applied load is the maximum load, adjust P1 until output signal is 10 V or 20 mA.
If the applied load is not the max. load. For example, with a 200 kg load cell and only a 100 kg load
available for the adjustment : Adjust P1 to obtain: 10 V x (100 kg / 200 kg) = 5 V (or 12 mA)
• Remove the load and verify the zero adjustment. If necessary, make a new zero adjustment followed by a new span adjustment.
Shunt calibration / control
If the load cell specifications are well known :
- Output resistance (Z) and Sensitivity (S).
It is not necessary to put a calibrated weight on the load cell for span adjustment.
You just have to :
1. Connect the load cell
2. Select the load cell sensitivity (Sensor sensitivity selection)
3. Adjust the zero (Zero adjustment)
Then :
4. While maintaining pressure on the push button ‘Cal’, adjust the output voltage (or current) with P1 potentiometer. The adjustment value is defined by the following formula :
- For 0/10 V analog output : V(V) = [(Z+1) / S] x 0.025
- For 4/20 mA analog output : I(mA) = [(Z+1) / S] x 0.04 + 4
With Z = output load cell resistance (Ω)
S = Load cell sensitivity (mV/V)
5. Release the push button ‘Cal’ and check the zero adjustment.
If necessary, make a new zero adjustment and start again this process.
Example
• Load cell with 500 kg capacity, 2 mV/V sensitivity and 350 Ω output resistance
• Voltage of 0/10 V output (to obtain 10 V at 500 kg)
V = [(350 Ω + 1) / 2 mV/V] x 0.025 = 4.387 V
• Output current (to obtain 20 mA at 500 kg)
I = [(350 Ω + 1) / 2 mV/V] x 0.04 + 4 = 11.02 mA
In case of calculation result > 10 V or 20 mA please ask Qmt ab, Sweden
Telefon
Adress
+46(0)480 44 02 00
Amerikavägen 6
393 56 KALMAR, Sweden
Telefax
+46(0)480 44 00 10
Hemsida/ e-post
www.qmt3.com
[email protected]
Optional potentiometer input
To obtain a 0/10V (or 4/20mA) output signal for the total potentiometer coarse, set up the CPJ as follow:
Set points option: CPJ2S
The CPJ2S version includes all the previous functionalities and, in addition, the possibility to manage 2
set points thanks to an additional electronic board.
Presentation
CPJ2S, DIN rail model
CPJ2S, Board model
General specifications of set points
Adress
Amerikavägen 6
393 56 KALMAR, Sweden
Telefon
+46(0)480 44 02 00
Telefax
+46(0)480 44 00 10
Hemsida/ e-post
www.qmt3.com
[email protected]
Wiring and setting devices positionning
Set points adjustment
Set points adjustment
Latching
Photorelays connections
Note : Each set point can be adjusted separately.
Set points option: CPJ2S
Photorelays functioning direction
The photorelays can be used with positive or negative logic. For this, put or remove the corresponding
jumper (Logic Positive/Negative).
Set points functioning
Positive signal
Adress
Amerikavägen 6
393 56 KALMAR, Sweden
Telefon
+46(0)480 44 02 00
Telefax
+46(0)480 44 00 10
Negative signal
Hemsida/ e-post
www.qmt3.com
[email protected]
Hysteresis
To avoid oscillation of the set point relays, an hysteresis is applied (jumper Hysteresis Min/Max).
- If the jumper is removed, the hysteresis value is 20 mV (0.2% of FS).
- If the jumper is in place (by default), the hysteresis value is 110 mV (1.1% of FS).
Set points adjustment
The set points can be ajusted with experiments or by using a voltmeter.
Experimental adjustment : Apply on the load cell the load corresponding to the wanted set point. Adjust the potentiometer until the state of the corresponding light changes.
Adjustment with voltmeter : Connect the voltmeter between the measurement points (V1 or V2) and
GND (voltmeter input ”-” connected to GND ). Adjust the corresponding potentiometer to the desired
set point voltage. The adjustment error is <2% with maximum hysteresis and <0.5% with minimum
hysteresis.
Example : the CPJ is adjusted for 10 V (or 20 mA) output with max. load.
For a requested set point at 80% of max. load, adjust the potentiometer (SP1 or SP2) to obtain 8 V
on measuring point.
Holding time
It is possible to maintain the set point during a minimum time depending on the ‘Holding timeMin/
Max’’ jumper position: - Jumper in place: Holding time = 5 ms
- Jumper removed: Holding time = 600 ms
Latching
It is possible to latch the set point by engaging the latch function. To enable the latch function, just
remove the ‘Latch Yes/No’ jumper. Release of latched set point is possible by powering off the CPJ or
by realizing a short-circuit on he ‘Reset latch’ connector.
Telefon
Adress
+46(0)480 44 02 00
Amerikavägen 6
393 56 KALMAR, Sweden
Telefax
+46(0)480 44 00 10
Hemsida/ e-post
www.qmt3.com
[email protected]