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Summary of Contents for Kobold KMT-1
- Page 1 Thermal Mass flow meter for COMPRESSED AIR and GASES Model KMT Manual Hardware and Software BA_KMT_e // V5.1 // technical data are subject to change // 193624...
- Page 2 We doesn't accept warranty and liability claims neither upon this pub- lication nor in case of improper treatment of the described products. The document may contain technical inaccuracies and typographical errors. The content will be revised on a regular basis. These changes will be implemented in later versions.
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Page 3: Table Of Contents
8.1. Order Code Replacement Sensor ................8.2. Order Code Replacement sensor cable ................. 8.3. Order Code Accessories for KMT-4 ............9. TECHNICAL DATA KMT-1, KMT-2 and KMT-3 ..................10. TECHNICAL DATA KMT-4 Table of contents - SOFTWARE ........................ 1. General ...................... -
Page 4: General
The design of the flow meter allows for the KMT to be installed in a pressurized system up to PN16 – is 16 bar (230 psi). For KMT-1, KMT-2 and KMT-3: Prior to the start of the installation, the system has to be depressurized. Before the installation or removal of the sensing probe or the screw cap, the measurement ball valve should be closed. -
Page 5: Installation, Start Up And Control
1.2.2. Installation, start up and control The flow meter is designed and built in accordance with the latest state in technology, tested adequately and has been shipped from the factory in good order and condition. As the user, you are responsible to comply with all applicable safety regulations amongst others: •... -
Page 6: Product Description
Two signal outputs are available. Depending on the application, the outputs can be configured as analogue (current or voltage), switch output or as pulse output for the measurement of the consumption. KMT-1, KMT-2 and KMT-3 Signal conditioning with optional display The enclosure with the signal conditioning is mounted either on the measurement probe (model 1 or 2 compact) or is remote with a plug- gable sensor cable up to 10 meter (33 feet) –... -
Page 7: Installation
INSTALLATION 3.1. Mounting dimensions 3.1.1. KMT-1, KMT-2 and KMT-3 The bottom part of the housing is mounted with 4 screws (not in the scope of supply) Max. screw diameter: 4.5 mm (0.17 inch). e.g. 4.2 x 38 mm DIN 7938H Screws cable gland M16x1.5... -
Page 8: Kmt-4
Because of the measuring principle the thermal mass flow meter KMT is largely independent of the process pressure and is factory calibrated at a pressure of 7 bar (100 psi) (KMT-1, KMT-2 and KMT-3) or 9 bar (130.5 psi) (KMT-4). -
Page 9: Installation Position
3.3. Installation position Make sure that the arrow on the tip of the sensing probe is pointing in the direction of the flow. Model Vertical Mounting Compact Remote Horizontal Mounting, sensor upwards Horizontal Mounting, sensor downwards Horizontal Mounting, sensor across ++ ... -
Page 10: Required Length Of Straight Pipe
Valves or gate valves should be installed downstream of the flow meter. • With lighter gases the inlet straight pipe should be longer. • Only for KMT-1, KMT-2 and KMT-3: The wall thickness of the inlet and outlet pipe should be 2,6 mm nominal pipe size (DN) flow direction straight inlet pipe... -
Page 11: Installation Kmt-1, Kmt-2 And Kmt-3
3.5. Installation KMT-1, KMT-2 and KMT-3 3.5.1. Measurement ball valve • all connections to be made with appropriated sealing material on the threads. • the sealing material should not change the area of the inner cross section of the pipe. It must be warranted that the connections after installation are free of leaks. -
Page 12: Installation Of The Flow Meter Sensing Probe
3.5.4. Installation of the flow meter sensing probe The flow direction is indicated with an arrow on the tip of the probe. Due to the alignment pin is the installation of the sensing probe in the measurement ball valve only possible in the direction of the flow. After a removal, the sensing probe will be re-installed in the measurement section in exactly the same position as done at the factory. -
Page 13: Installation Kmt-4 In The Pipe Line
3.6. Installation KMT-4 in the pipe line The patented non-return protection device for reliable installation combines three functions in one unit: • Non-return protection device The sensor can only be pushed in one direction during installation. The sensor will not move back at all, even when it is released. - Page 14 • If the measurement sensor is immersed too far into the pipe line, it can be retracted by unlocking the non-return protection device. To do this, slowly press the knurled nut inwards. As with a pressure point in a car clutch, this permits the immersion depth to be set to the precise millimetre.
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Page 15: Setting The Pipe Diameter
• Connect the measurement sensor and the evaluation unit to the sensor cable. Sensor cable Sensor cable 3.7. Setting the pipe diameter The flowmeter is factory-set so that the average corrected flow speed is measured in the pipe. The standardized volumetric flow is calculated by the flowmeter as follows: * id * π/4 * 3600... -
Page 16: Electrical Connections
ELECTRICAL CONNECTIONS Before electrical connections are made turn off the power supply first. If not observed the electronics can be damaged as a result. Only a qualified electrotechnical engineer may install the device. • Unscrew the four screws and remove the cover of the housing. •... -
Page 17: Control Components
CONTROL COMPONENTS 5.1. Jumper for Output If the signal output is altered from relay to analogue output or vice versa, Jumper Output 1 has to be relocated. If the analogue output is altered from a current to a voltage output or vice versa, Jumper Out-1 has to be relocated. -
Page 18: Display / Indicator With Keypad (Optional)
5.3. Display / Indicator with keypad (optional) An optional two-line display is available for the flowmeter KMT. The display is an integral part of the cover of the housing and has two soft-keys for the control of the indicator. line 1 pushbutton - UP Maximal : 1.3 m... -
Page 19: Indication Of The Min / Max Values
5.3.3. Indication of the MIN / MAX values Keep the DOWN key pressed for > 3 sec to indicate the MIN value. Keep the UP key pressed for > 3 sec to indicate the MAX value. MAX value press pushbutton UP >3s Maximal : 1.3 m MIN value press pushbutton DOWN >3s... -
Page 20: Error Messages
ERROR MESSAGES In case the flowmeter is equipped with the optional display, the following error message can be indicated. ERROR 01: sensing probe is not detected Cause: the sensing probe is not connect or is defect Effect: the display indicates “0” for all measurand. The analogue output defaults to the lowest configured value. -
Page 21: Order Code Replacement Sensor Cable
8.2. Order Code Replacement sensor cable only for KMT-3 and KMT-4 (Example: ERS-KMT-K 2) Model Cable length 2 = 2 m with plug M12, 4-pin ERS-KMT-K 5 = 5 m with plug M12, 4-pin Z = 10 m eith plug M12, 4-pin 8.3. -
Page 22: Technical Data Kmt-1, Kmt-2 And Kmt-3
TECHNICAL DATA KMT-1, KMT-2 and KMT-3 Measuring value Flow Measurand Volumetric flow at standard conditions acc. DIN 1343 = 1013.25 mbar; t = 0 °C (273.15 K) Measuring range KMT-x1xx KMT-x2xx standardized volumetric flow in air DN15: 0.32...63 Nm 0.32...126 Nm 0.19...37.1 SCFM... - Page 23 Factory setting of outputs KMT-1, KMT-2 and KMT-3 SI-Unit Analogue output from unit [0...10 V / 0(4)...20 mA] KMT-x1... KMT-x2... standardized DN15: volumetric flow DN20: DN25: DN32: DN40: DN50: 1400 mass flow DN15: kg/h DN20: kg/h DN25: kg/h DN32 kg/h DN40: 1140 kg/h DN50:...
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Page 24: Technical Data Kmt-4
TECHNICAL DATA KMT-4 Measuring value Flow Measurand Volumetric flow at standard conditions acc. DIN 1343 = 1013.25 mbar = 0 °C (14.7 PSI) (32 °F) Measuring range 0.2...100 Nm/s or 0.2...200 Nm/s (40...19685 SFPM) (40...39370 SFPM) Accuracy ± (1.5 % of measuring value + 0.8 % of full scale) in air at 9 bar (130.5 psi) (abs) and 23 °C (73 °F) Temperature coefficient ±... - Page 25 Factory setting analogue output Analogue output [0...10 V / 0(4)...20 mA] standardized volumetric flow standardized volumetric flow mass flow pipe inner Ø from up to unit up to unit up to unit DN Zoll di (mm) low (L1) high (H2) low (L1) high (H2) low (L1) high (H2) 2"...
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Page 26: General
KOBOLD software product and any associated sup- port services or non-performance of support services. -
Page 27: Configuration Of The Usb Interface (Virtualcom)
2.1. Configuration of the USB Interface (VirtualCOM) After the startup of the software, the correct VirtualCOM interface for the USB driver must be configured The number for the used USB interface can be found under: Start => Settings => Control Panel => System => Hardware => Device Manager The setting is done under menu “Extras”... -
Page 28: User Interface
User Interface Basic information: After retrieving the data from the transmitter, the basic information of the device is shown here. Status message: Here are the messages shown about the status and other information. Input screen: Input screen for the configuration or adjustment of the flow meter. Menu tool bar: Selection of menu items. -
Page 29: Transmitter
4.2. Transmitter Read reads the actual configuration of the transmitter. Send uploads the ‘new’ configuration to the transmitter. The following settings are uploaded to the transmitter • Units • Output 1 • Output 2 • Display mode • Pressure transmitter Prior to uploading the ‘new’... -
Page 30: Output Mode - Switch (Relay)
5.1.5. Output mode – switch (relay) In the field for the “Switch-mode”, one can select “Hysteresis” or “Window”. The field for “Type” is to determine the switch action of the relay, NO = Normally Open (activate to close), NC = Normally Close (activate to open). Under “Measuring range”... -
Page 31: Output Mode - Pulse
5.1.6. Output mode – pulse If output 2 is configured for pulse, the measurand can be consumption only. Under “Pulse”, the duration of the pulse and the pulse value (Significance level of pulse) can be freely configured. Volume Flow [m Number of Pulses Pulse Value [m /Pulse] Hour... -
Page 32: Adjustment
5.4. Adjustment The user can perform an adjustment for the measurands normflow and temperature in air. The configuration software distinguishes between a 1-point and a 2-point adjustment automatically, depending on how many reference points for adjustments are entered. The values entered for the customer’s adjustment are stored in the electronics of the sensing probe and are therefore not lost if the electronics of the signal conditioning are replaced (see page 6) If the checkbox “Performing customer-adjustment”... -
Page 33: 2-Point Adjustment
5.4.2. 2-point adjustment With a 2-point adjustment procedure the lower adjustment point must be between 0 and 40% of the measur- ing range, and the upper adjustment point between 60 and 100% of the measuring range. If the adjustment point is between 40 and 60% of the measuring range, automatically a 1-point adjustment procedure will be executed instead. -
Page 34: Measuring Values Overview
5.5. Measuring values overview The tab measuring values provides an overview of the retrieved actual measurement values of the flowme- ter (transmitter). Clicking on “Fetch values” will retrieve the actual measurement and MIN / MAX values for flow, volume flow, temperature, mass flow and pressure (only if a pressure transmitter is connected) from the transmitter –... -
Page 35: Changing The Standard Conditions
On the tab “Pressure transmitter” the measuring range can be entered. 5.8. Declaration of Conformance EU Declaration of Conformance We, KOBOLD Messring GmbH, Hofheim-Ts, Germany, declare under our sole responsibility that the product: Flow Meter for compressed air and gases Model: KMT... - Page 36 www.kobold.com...
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