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The OxyScan Transmitter is a measuring amplifier for UMS oxygen sensors
to measure dissolved oxygen in liquids.
The liquid temperature and the atmospheric pressure are measured
simultaneously and automatically compensated.
The measured value is output as a current signal via a 4-20 mA current
loop. There is no need for additional electric power.
Handling of the O2 sensor (electrochemical)
Always store the sensor in its calibration chamber when not in use!
The membrane (thin, be careful) atthe sensor tip can be cleaned carefully
with a moistened cotton ball.
A constantly increasing display value indicates a damaged membrane.
In this case, the sensor must be replaced or regenerated.
The sensor consumes minimal amounts of O2 during the measurement.
Therefore it requires a little liquid flow to achieve stable readings.
For measurements in standing liquids, the sensor should be moved
slightly.
For permanent installation in piping systems:
The liquid flow rate should be at least 2 cm / sec.
Operation manual
OxyScan Transmitter waterproof
1
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Summary of Contents for UMS OxyScan Transmitter waterproof
- Page 1 Operation manual OxyScan Transmitter waterproof The OxyScan Transmitter is a measuring amplifier for UMS oxygen sensors to measure dissolved oxygen in liquids. The liquid temperature and the atmospheric pressure are measured simultaneously and automatically compensated. The measured value is output as a current signal via a 4-20 mA current loop.
- Page 2 The transmitter housing contains two green terminals. The UMS oxygen sensor is connected to the 5-row. Power is supplied via the current loop on the 4-row terminal. (The power cable must not bend / break the light pipe!) When closing the cable clamps, be sure to fix the lock nut, otherwise the clamp will rotate and its bonding will come off.
- Page 3 The two middle clamps are connected together. They can be used to connect the power supply to the receiver when both cables are merged in the transmitter. In normal operation, the LED on the transmitter is shining with light intensity: blue or green depending on the measuring parameter.
- Page 4 Conversion of the measured values: Abslute value: (Iout – 4 mA) * 1.25 ( * 1 mg/l / 1 mA) 4 mA corresponds to 0 mg/l, 20 mA corresponds to 20 mg/l. Relative value: (Iout – 4 mA) * 12.5 ( * 1 %Sat / 1 mA) 4 mA corresponds to 0 %sat, 20 mA corresponds to 200 %sat...
- Page 5 Calibration During calibration, the sensor must be inserted in the supplied calibration chamber. In this there is a sponge, which should be kept moist. The sensor should be powered for at least 5 minutes before calibration. (in case of a new or recently regenerated sensor, or if the sensor has not been used for more than 2 weeks, 10-15 minutes are recommended) During this time and during calibration, the sensor must be in the supplied calibration chamber!
- Page 6 Technical specifications: Input UMS oxygen sensor (5-row clamp) Output Dissolved oxygen concentration, optionally mg/l or %saturation (4-row clamp) Normal 4..20 mA Alarm signal: 24 mA Power supply 6-32 VDC, min. 24 mA Storage and operating 0 .. 70 °C temperature of the sensor...
- Page 7 We provide a 12-month legal guarantee on the entire measuring system. In the guarantee case, please return the sensor or measuring instrument with the test certificate. UMS GmbH & Co. KG Oberdorfstr. 19 97647 Willmars, Germany Tel. +49 (0) 9779 850343 Fax +49 (0) 9779 850344 info@ums-gmbh.de...